Additional of metal filler on graphite/carbon black/polypropylene composite as bipolar plate material for PEMFC application
Polymer electrolyte membrane fuel cell (PEMFC) is expected to be one of the major power sources for future passenger vehicles since it features a high power density at a relatively low operating temperature of about 80◦C. There are several key components in PEMFC and one of them is bipolar plate. Th...
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T Technology (General) TP Chemical technology Ahmad, Mohd Shakir Additional of metal filler on graphite/carbon black/polypropylene composite as bipolar plate material for PEMFC application |
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Polymer electrolyte membrane fuel cell (PEMFC) is expected to be one of the major power sources for future passenger vehicles since it features a high power density at a relatively low operating temperature of about 80◦C. There are several key components in PEMFC and one of them is bipolar plate. This bipolar plate is a multi-functional component. It provides the electrical connection from cell-to-cell and it separates the reactive gases. The known problem related to bipolar plate is the corrosion, weight and high cost. Hence, composite bipolar plate based on thermoplastic material is introduced and solved the general disadvantages of traditional bipolar plate. But, it still has a main limitation which is electrical conductivity and mechanical properties such as brittleness.. Through this research, the effect of secondary filler on electrical and mechanical properties is studied in order to overcome the main limitation of composite bipolar plate. The combination of metal and carbon filler also been studied for the purpose of improvement electrical and mechanical properties of G/PP composite bipolar plate. This study also would propose the fabrication process in producing composite material bipolar plate. The materials used in producing bipolar plate are greatly affecting its final properties. As for binder material, Polypropylene (PP) is used and for main filler material Graphite (Gr) is used. While, second filler used are Iron (Fe), Nickel (Ni) and Carbon Black (CB). The based ratio for this bipolar plate is 80%wt of filler and 20% wt of binder. The addition second filler is varying from 5%wt to 30%wt from the total of 80%wt. The fabrication of sample is done through compression molding method. The measurement that has been done is electrical conductivity, flexural strength, bulk density, shore hardness and microstructures. From result, the addition of CB has shown the most improvement in term of electrical conductivity (218.43 S/cm) and has good mechanical properties (38.03 MPa, flexural strength). While, the addition of Fe and Ni it not quite good but still Fe is better candidate than Ni. From this finding, another sample is introduced which is the combination of Fe and CB as part of second filler and it show the greater result which is 367.59 S/cm in electrical and 44.57 MPa in flexural strength. This result has shown a great improvement in electrical conductivity and acceptable mechanical properties. This framework of study can be used as reference in furthering the research. |
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Ahmad, Mohd Shakir |
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Ahmad, Mohd Shakir |
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Ahmad, Mohd Shakir |
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Additional of metal filler on graphite/carbon black/polypropylene composite as bipolar plate material for PEMFC application |
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Additional of metal filler on graphite/carbon black/polypropylene composite as bipolar plate material for PEMFC application |
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Additional of metal filler on graphite/carbon black/polypropylene composite as bipolar plate material for PEMFC application |
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Additional of metal filler on graphite/carbon black/polypropylene composite as bipolar plate material for PEMFC application |
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Additional of metal filler on graphite/carbon black/polypropylene composite as bipolar plate material for PEMFC application |
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additional of metal filler on graphite/carbon black/polypropylene composite as bipolar plate material for pemfc application |
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Universiti Teknikal Malaysia Melaka |
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Faculty Of Mechanical Engineering |
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2015 |
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my-utem-ep.168252022-04-20T11:03:42Z Additional of metal filler on graphite/carbon black/polypropylene composite as bipolar plate material for PEMFC application 2015 Ahmad, Mohd Shakir T Technology (General) TP Chemical technology Polymer electrolyte membrane fuel cell (PEMFC) is expected to be one of the major power sources for future passenger vehicles since it features a high power density at a relatively low operating temperature of about 80◦C. There are several key components in PEMFC and one of them is bipolar plate. This bipolar plate is a multi-functional component. It provides the electrical connection from cell-to-cell and it separates the reactive gases. The known problem related to bipolar plate is the corrosion, weight and high cost. Hence, composite bipolar plate based on thermoplastic material is introduced and solved the general disadvantages of traditional bipolar plate. But, it still has a main limitation which is electrical conductivity and mechanical properties such as brittleness.. Through this research, the effect of secondary filler on electrical and mechanical properties is studied in order to overcome the main limitation of composite bipolar plate. The combination of metal and carbon filler also been studied for the purpose of improvement electrical and mechanical properties of G/PP composite bipolar plate. This study also would propose the fabrication process in producing composite material bipolar plate. The materials used in producing bipolar plate are greatly affecting its final properties. As for binder material, Polypropylene (PP) is used and for main filler material Graphite (Gr) is used. While, second filler used are Iron (Fe), Nickel (Ni) and Carbon Black (CB). The based ratio for this bipolar plate is 80%wt of filler and 20% wt of binder. The addition second filler is varying from 5%wt to 30%wt from the total of 80%wt. The fabrication of sample is done through compression molding method. The measurement that has been done is electrical conductivity, flexural strength, bulk density, shore hardness and microstructures. From result, the addition of CB has shown the most improvement in term of electrical conductivity (218.43 S/cm) and has good mechanical properties (38.03 MPa, flexural strength). While, the addition of Fe and Ni it not quite good but still Fe is better candidate than Ni. From this finding, another sample is introduced which is the combination of Fe and CB as part of second filler and it show the greater result which is 367.59 S/cm in electrical and 44.57 MPa in flexural strength. This result has shown a great improvement in electrical conductivity and acceptable mechanical properties. This framework of study can be used as reference in furthering the research. 2015 Thesis http://eprints.utem.edu.my/id/eprint/16825/ http://eprints.utem.edu.my/id/eprint/16825/1/Additional%20Of%20Metal%20Filler%20On%20Graphite%2C%20Carbon%20Black%2C%20Polypropylene%20Composite%20As%20Bipolar%20Plate%20Material%20For%20PEMFC%20Application.pdf text en public http://eprints.utem.edu.my/id/eprint/16825/2/Additional%20of%20metal%20filler%20on%20graphite%20carbon%20black%20polypropylene%20composite%20as%20bipolar%20plate%20material%20for%20PEMFC%20application.pdf text en validuser https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=96159 mphil masters Universiti Teknikal Malaysia Melaka Faculty Of Mechanical Engineering Selamat, Mohd Zulkefli 1. Ahmad M.S., Selamat M.Z, Daud M.A.M, Yunus, I.K.M., Azman M.S., 2013, Effect of Different Filler Materials in the Development of Bipolar Plate Composite for Polymer Electrolyte Membrane Fuel Cell (PEMFC), Applied Mechanics and Materials, Volume 315 Pp 226-230. 2. Andrew L. D., 2006, The role of carbon in fuel cells, Journal of Power Sources, volume 156, pp. 128–141. 3. Banerjee P., Broja M. M, 1995, Conducting Polyaniline Nanoparticle Blends with Extremely Low Percolation Thresholds, Macromolecules, Volume 28, Issue 11, pp 3940–3943. 4. Boudenne A., Ibos L., Fois M., Majeste´ J.C., Ge´hin E., 2005, Electrical and thermal behavior of polypropylene filled with copper particles, Composites: Part A, volume 36, pp. 1545–1554. 5. Caglar B., Fischer P., Kauranen P., Karttunen M., Elsner P., 2014, Development of carbon nanotube and graphite filled polyphenylene sulfide based bipolar plates for all-vanadium redox flow batteries, Journal of Power Sources, Volume 256, Pp 88-95 6. Chodák I., Mária O., Jürgen P., 2001, Relation between electrical and mechanical properties of conducting polymer composites, Journal of Applied Polymer Science, Volume 82, Issue 8, pp 1903–1906. 7. Christopher C.I, 2011. Thermoplastic Materials : Properties,Manufacturing Methods, and applications, Boca Raton, CRC Press. 8. Cui L.M., Yong Z, Yinxi Z, Xiangfu Z, Wen Z, 2007, Electrical properties and conductive mechanisms of immiscible polypropylene/Novolac blends filled with carbon black, European Polymer Journal, volume 43, pp. 5097–5106 9. Cunningham B.D, Baird D.G., 2007, Development of bipolar plates for fuel cells from graphite filled wet-lay material and a compatible thermoplastic laminate skin layer, Journal of Power Sources, Volume 168, Issue 2, Pp 418-425. 10. Derieth T., Bandlamudi G., Beckhaus P., Kreuz C., Mahlendorf F. and Heinzel A., 2008, Development of Highly Filled Graphite Compounds as Bipolar Plate Materials for Low and High Temperature PEM Fuel Cells, Journal of New Material for Electrochemical Systems, volume 11, issue 1, Pp 021-029. 11. Devesh T., 2002. Practical guide to polypropylene, shawbury UK, Rapra Technology Limited. 12. Dhakate S.R, Sharma S., M Borah, Mathur RB., Dhami TL., 2008, Development and characterization of expanded graphite-based nanocomposite as bipolar plate for polymer electrolyte membrane fuel cells (PEMFCs), Energy & Fuels, Volume 22, Issue 5, Pp 3329-3334. 13. Dhakate S.R, Sharma S., Borah M., Mathur R.B., Dhami T.L., 2008, Expanded graphite-based electrically conductive composites as bipolar plate for PEM fuel cell, International Journal of Hydrogen Energy, Volume 33, Issue 23, Pp 7146-7152. 14. Dhakate S.R., Mathur R.B., Kakati B.K., Dhami T.L., 2007, Properties of graphite-composite bipolar plate prepared by compression molding technique for PEM fuel cell, International Journal of Hydrogen Energy, Volume 32, Issue 17, Pp 4537-4543. 15. Dhakate S.R., Sharma S., Chauhan N., Seth RK, Mathur RB, 2010, CNTs nanostructuring effect on the properties of graphite composite bipolar plate, International Journal Of Hydrogen Energy, Volume 35 Issue 9, Pp 4195-4200. 16. Dhakate SR, Mathur RB, Sharma S, Borah M, Dhami TL, 2009, Influence of expanded graphite particle size on the properties of composite bipolar plates for fuel cell application, Energy & Fuels, Volume 23, Issue 2, Pp 934-941. 17. Du C., Pingwen M., Ming H., Jie F., Qiang S., Liang D., Fu Y., Luo X., Shao Z., Yi B., 2010, Preparation and properties of thin epoxy/compressed expanded graphite composite bipolar plates for proton exchange membrane fuel cell, Journal of Power Sources, Volume 195, Issue 3, Pp 794-800. 18. Du L., Sadhan C. J., 2007, Highly conductive epoxy/graphite composites for bipolar plates in proton exchange membrane fuel cells, Journal of Power Sources, Volume 172, Issue 2, Pp 734-741. 19. Dweiri R., Sahari J., 2007, Electrical properties of carbon-based polypropylene composites for bipolar plates in polymer electrolyte membrane fuel cell (PEMFC), Journal of Power Sources, Volume 171, Issue 2, Pp 424–432. 20. Energy Efficiency and Renewable Energy [EERE], 2012, Fuel Cell, available at: 21. http://www1.eere.energy.gov/hydrogenandfuelcells/fuelcells/pdfs/fc_comparison_chart.pdf 22. George W., 2012, Handbook of Polymers, Toronto,Chemtec. 23. Guo N., Leu M.C., 2012, Effect of different graphite materials on the electrical conductivity and flexural strength of bipolar plates fabricated using selective laser sintering, International Journal of Hydrogen Energy, Volume 37, Pp 3558-3566 24. Hadrian V. N.C, Srivatsan V., Phochara B., Ali M.Z., 2012, Dynamic performance of PEM Fuel Cell, available at: 25. http://www.esru.strath.ac.uk/EandE/Web_sites/12-13/PEM_fuel_cell/fc.html 26. Hendra S, Sulong A.B., Sahari J.,2013, Effect of the compression molding parameters on the in-plane and through-plane conductivity of carbon nanotubes/graphite/ epoxy nanocomposites as bipolar plate material for a polymer electrolyte membrane fuel cell, Ceramics International, Volume 39, Pp 1277–1284 27. Heo S.I., Oh K.S., Yun J.C., Jung S.H., Yang Y.C., Han K.S., 2007, Development of preform moulding technique using expanded graphite for proton exchange membrane fuel cell bipolar plates, Journal of Power Sources, Volume 171, Issue 2, Pp 396-403 28. Heo, S. I., Yun, J. C. , Oh, K. S. , Han, K. S. ,2006, Influence of particle size and shape on electrical and mechanical properties of graphite reinforced conductive polymer composites for the bipolar plate of PEM fuel cells, Advanced Composite Materials: Volume 1, Issue 1, pp. 115-126. 29. Hwang I.U., Yu H.N., Kim S.S., Lee D.G., Suh J.D., Lee S.H., Ahn B.K., Kim S.H, Lim T.W., 2008, Bipolar plate made of carbon fiber epoxy composite for polymer electrolyte membrane fuel cells, Journal of Power Sources, Volume 184, Issue 1, Pp 90-94. 30. Instron Worldwide, 2014, Flexure Test, available at: 31. http://www.instron.us/wa/applications/test_types/flexure/default.aspx 32. James F., 2006, PEM Fuel Cells, available at: 33. http://thefraserdomain.typepad.com/energy/2006/04/pem_fuel_cells.html#more 34. Kakati B.K., Yamsani V.K., Dhathathreyan K.S., Sathiyamoorthy D., Verma A., 2009, The Electrical Conductivity Of A Composite Bipolar Plate For Fuel Cell Applications, CARBON, volume 47, Pp. 2413–2418. 35. Kamarudin S.K., Daud W.R.W., A. Md.Som, M.S. Takriff, A.W. Mohammad, 2006, Technical design and economic evaluation of a PEM fuel cell system, Journal of Power Sources, Volume 157, Pp 641–649. 36. Kim J.W., Kim N.H., Kuilla T., Kim T.J., Rhee K.Y., Lee J.H., 2010, Synergy effects of hybrid carbon system on properties of composite bipolar plates for fuel cells, Journal of Power Sources, Volume 195, Issue 17, Pp 5474-5480. 37. Kim N.H., Kuila T., Kim K.M., Nahmd S.H., Lee J.H., 2012, Material selection windows for hybrid carbons/poly(phenylene sulfide) composite for bipolar plates of fuel cell, Polymer Testing, volume 31, pp. 537–545. 38. Krupa I., Chodák I., 2001, Physical properties of thermoplastic/graphite composites, European Polymer Journal, Volume 37, Issue 11, Pp 2159–2168. 39. Kuan H.C., Chen C.M.M, Chen K.H., Chen S.M., 2004, Preparation, electrical, mechanical and thermal properties of composite bipolar plate for a fuel cell, Journal of Power Sources, Volume 134, Issue , Pp 7-17. 40. Kuilla T., Sambhu B., Yao D., Kim N.H., Saswata B, Lee J.H., 2010, Recent advances in graphene based polymer composites, Progress in Polymer Science, volume 35, pp. 1350–1375. 41. Kyungmun K., Sunghyun P., Hyunchul J., 2014, Effects of type of graphite conductive filler on the performance of a composite bipolar plate for fuel cells, Solid State Ionics, Volume 262, Pp 332–336. 42. Larminie, J., Dicks, A., 2001. Fuel Cell Systems Explained. Wiley. 43. Lee J.H., Jang Y.K., Hong C.E., Kim N.H., Li P., Lee H.K., 2009, Effect of carbon fillers on properties of polymer composite bipolar plates of fuel cells, Journal of Power Sources, Volume 193, Issue 2, Pp 523-529. 44. Liao S.H., Hung C.H., Ma C.C.M., Yen C.Y., Lin Y.F., Weng C.C., 2008, Preparation and properties of carbon nanotube-reinforced vinyl ester/nanocomposite bipolar plates for polymer electrolyte membrane fuel cells, Journal of Power Sources, Volume 176, Issue 1, Pp 175-182. 45. Liao S.H., Hsiao M.C., Yen C.Y., Ma C.C.M, Lee S.J., Su A., Tsai M.C., Yen M.Y., Liu P.L., 2010, Novel functionalized carbon nanotubes as cross-links reinforced vinyl ester/nanocomposite bipolar plates for polymer electrolyte membrane fuel cells, Journal of Power Sources, Volume 195, Issue 23, Pp 7808-7817. 46. Lim J.W., Kim M., Lee D.G., 2014, Conductive particles embedded carbon composite bipolar plates for proton exchange membrane fuel cells, Composite Structures, Volume 108, Pp 757–766 47. Liu C.C, WaltersA.B., Vannice M.A., 1995, Measurement of Electrical Properties of a Carbon Black, Carbon Vol. 33, issue 12, pp. 1699-1708. 48. Liu C.H., Ko T.H., Liao Y.K., 2008, Effect of carbon black concentration in carbon fiber paper on the performance of low-temperature proton exchange membrane fuel cells, Journal of Power Sources, volume 178, pp. 80–85. 49. Maheshwari P.H., Mathur R.B., Dhami T.L., 2007, Fabrication of high strength and a low weight composite bipolar plate for fuel cell applications, Journal of Power Sources, Volume 173, Issue 1, Pp 394-403. 50. Mathur R.B., Dhakate S.R., Gupta D.K., Dhami T.L., Aggarwal R.K., 2008, Effect of different carbon fillers on the properties of graphite composite bipolar plate, Journal of Materials Processing Technology, Volume 203, Issues 1–3, Pp 184–192. 51. Mighri F., Huneault M.A., Champagne M.F., 2004, Conductive Polymer Blends for Injection-Molded Bipolar Plates, Polymer Engineering and Science, Volume 44, pp 1755-1765. 52. Oh K.S., Heo S.I. - Yun J.C. - Han K.S., 2008, Characterization of Expanded Graphite/Flake-Type Graphite Filled Conductive Polymer Composites, Advanced Materials Research, Volume 33-37, pp. 515-520. 53. Onischak, M., Marianowski, L.G., Fan, Q., Chervinko, J., 1999. Development of a $10/kW bipolar separator plate In: Joint DOE/EPRI/ERI, Review Conference on Fuel Cell Technology, Chicago, IL, August 3–5 54. Pan Y, Li L., Chan S.H., Zhao J., 2010, Correlation between dispersion state and electrical conductivity of MWCNTs/PP composites prepared by melt blending, Composites Part A: Applied Science and Manufacturing, Volume 41, Issue 3, Pp 419-426. 55. Paul F., 2002, Four Point Probe Manual, available at: http://www-inst.eecs.berkeley.edu/~ee143/fa10/lab/four_point_probe.pdf 56. Planesa E., Flandina L, Alberolaa N., 2012, Polymer composites bipolar plates for PEMFCs, Energy Procedia, volume 20, pp. 311 – 323. 57. Rajatendu S., Mithun B., Bandyopadhyay S., Bhowmick A.K., 2011, A review on the mechanical and electrical properties of graphite and modified graphite reinforced polymer composites, Progress in Polymer Science, volume 36, pp. 638–670. 58. Rapra S., 2011. An Introduction to conductive polymer composites, Shawbury UK, IPoly-Cond. 59. Renato A. A., Oliveira M.C.L., Ett G., Ett V., 2011, Carbon materials in composite bipolar plates for polymer electrolyte membrane fuel cells: A review of the main challenges to improve electrical performance, Journal of Power Sources, volume 196, pp. 2945–2961. 60. Reza T., Hadianfard M.J., Golikand A.N., 2013, Manufacture of a polymer-based carbon nanocomposite as bipolar plate of proton exchange membrane fuel cells, Materials and Design, volume 49, pp 242–251. 61. Reza T., 2014, A review of composite and metallic bipolar plates in proton exchange membrane fuel cell: Materials, fabrication, and material selection, Journal of Power Sources, Volume 265, Pp 370-390. 62. Richard B, Elhamid M.H.A., Lisi D., Mikhail Y., 2006, Polymeric composite bipolar plates for vehicle applications, Journal of Power Sources, volume 156, pp. 151–157. 63. Rungsima Y., Fowler M.W. and Tzoganakis C. (2011). A Review of Thermoplastic Composites for Bipolar Plate Materials in PEM Fuel Cells. Available from: http://www.intechopen.com/books/nanocomposites-with-unique-properties-and-applications-in-medicine-and-industry/a-review-of-thermoplastic-composites-for-bipolar-plate-materials-in-pem-fuel-cells 64. Ryan O’H, Cha S.W, Colella W., Prinz F.B., 2009, Fuel Cell Fundamentals, 2nd ed. New Jersey, Wiley. 65. Selamat MZ, Sahari J., Norhamidi M., Muchtar A., 2011, Simultaneous Optimization for Multiple Responses on the Compression Moulding Parameters of Composite Graphite–Polypropylene Using Taguchi Method, Key Engineering Materials, Volume 471, pp 361-366. 66. Selamat MZ, Sahari J., Muhamad N., Muchtar A., 2011, The effects of thickness reduction and particle sizes on the properties graphite–polypropylene composite, Composites, Volume 80, Issue 20, pp 80. 67. Selamat MZ, MS Ahmad, M.Daud, M A, Ahmad N., 2013, Effect of Carbon Nanotubes on Properties of Graphite/Carbon Black/Polypropylene Nanocomposites, Advanced Materials Research, Volume 795, pp 29-34. 68. Strong A.B, 2006, Plastics : Materials and Processing, 3rd ed. New Jersey, Prentice Hall. 69. Tawfik H., Hung Y., Mahajan D., 2007, Metal bipolar plates for PEM fuel cell—A review, Journal of Power Sources, volume 163, pp. 755–767. 70. Wang H., Turner J.A, 2004, Ferritic stainless steels as bipolar plate material for polymer electrolyte membrane fuel cells, Journal of Power Sources, Volume 128, Pp 193–200. 71. Wilkinson D.P., Zhang J., Hui R., Fergus J., Li X., 2010. Proton Exchange Membrane Fuel Cell : Materials properties and performance, New York, CRC Press. 72. Wissler M., 2006, Graphite and carbon powders for electrochemical applications, Journal of Power Sources, Volume 156, Issue 2, Pp 142-150. 73. Xia L.G., Li A.J., Wang W.Q., Yin Q., Lin H., Zhao Y.B., 2008, Effects of resin content and preparing conditions on the properties of polyphenylene sulfide resin/graphite composite for bipolar plate, Journal of Power Sources, Volume 178, Issue 1, Pp 363–367. 74. Xiao M., Lu Y., Wang S.J., Zhao Y.F., Meng Y.Z., 2006, Poly(arylene disulfide)/graphite nanosheets composites as bipolar plates for polymer electrolyte membrane fuel cells, Journal of Power Sources, Volume 160, Issue 1, Pp 165-174. 75. Yang T., Shi P., 2008, Study on the mesocarbon microbeads/polyphenylene sulfide composite bipolar plates applied for proton exchange membrane fuel cells, Journal of Power Sources, Volume 175, Issue 1, Pp 390-396. 76. Yen C.Y., Liao S.H., Lin Y.F, Hung C.H., Lin Y.Y., Ma C.C.M., 2006, Preparation and properties of high performance nanocomposite bipolar plate for fuel cell, Journal of Power Sources, Volume 162, Issue 1, Pp 309-315. 77. Yin Q., Li A.J., Wang W.Q., Xia L.G., Wang Y.W., 2007, Study on the electrical and mechanical properties of phenol formaldehyde resin/graphite composite for bipolar plate, Journal of Power Sources, Volume 165, Issue 2, Pp 717-721. 78. Yin Q., Sun K.N., Li A.J., Shao L., Liu S.M., Sun C., 2008, Study on carbon nanotube reinforced phenol formaldehyde resin/graphite composite for bipolar plate, Journal of Power Sources, Volume 175, Issue 2, Pp 861-865. 79. Zeng Y., Liu P., Du J., Zhao L, Ajayan P.M., Cheng H.M., 2010, Increasing the electrical conductivity of carbon nanotube/polymer composites by using weak nanotube–polymer interactions, Carbon, Volume 48, Issue 12, Pp 3551-3558. |