|
|||||
|
|
Synergy effects of hybrid carbon system on properties of composite bipolar plates for fuel cells |
|
| Authors: | Jong Wan Kim Tapas Kuilla Kyong Yop Rhee |
| Affiliation: | a Department of Hydrogen and Fuel Cell Engineering, Chonbuk National University, Jeonju, Jeonbuk, 561-756, Republic of Korea b BIN Fusion Research Team, Department of Polymer & Nano Engineering, Chonbuk National University, Jeonju, Jeonbuk, 561-756, Republic of Korea c Core Technology Research Center for Fuel Cell, JBTP, 857-4, Dunsan-ri, Bongdong-eup, Wanju-gun, Jeonbuk, 565-902, Republic of Korea d Department of Mechanical Engineering, Kyung Hee University, Yongin, 446-701, Republic of Korea e Department of BIN Fusion Technology, Chonbuk National University, Jeonju, Jeonbuk, 561-756, Republic of Korea |
| Abstract: | A hybrid carbon system of graphite powder (GP) and continuous carbon fibre fabric (CFF) is used for an epoxy composite to improve the electrical conductivity, mechanical properties and mouldability of a composite bipolar plate. These improvements are achieved simultaneously by inserting several layers of CFF into the GP/epoxy composite to enhance the mechanical properties and in-plane conductivity. The electrical properties, flexural strength and mouldability of the composite plates are measured as a function of conducting filler content and number of CFF layers. The composites show improved electrical conductivity, flexural properties and mouldability. Composites with 70-75 vol.% carbon fillers have the highest electrical conductivity with reasonable flexural properties. These results suggest that the poor mouldability and low through-plane electrical conductivity of the continuous fibre composite bipolar plate, as well as the weak flexural properties of GP composites, can be overcome by incorporating a GP/CFF hybrid system. |
| Keywords: | Fuel cell Bipolar plate Hybrid carbon Electrical conductivity Mechanical property |
| 本文献已被 ScienceDirect 等数据库收录！ | |