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Study on Improving Properties of Carbon Paper by Adding Vapor Grown Carbon Fiber
Received:April 26, 2022  
DOI：10.11980/j.issn.0254-508X.2023.01.005
Key Words:vapor grown carbon fiber （VGCF）  carbon paper  fuel cell  resistance  graphitization degree
Fund Project:“浙江省尖兵”研发攻关计划（2022c01066）。
Author NameAffiliationPostcode
YUAN Xiaojun* Zhejiang Pengchen Paper Research Institute Co.， Ltd.， Hangzhou， Zhejiang Province， 311215 311215
SUN Qizhong Zhejiang Pengchen Paper Research Institute Co.， Ltd.， Hangzhou， Zhejiang Province， 311215 311215
LIU Jiangtao Guizhou Meiling Power Sources Co.， Ltd.， Zunyi， Guizhou Province， 563099 563099
WANG Hong Zhejiang Pengchen Paper Research Institute Co.， Ltd.， Hangzhou， Zhejiang Province， 311215 311215
LI Rongnian Zhejiang Pengchen Paper Research Institute Co.， Ltd.， Hangzhou， Zhejiang Province， 311215 311215
FENG Yong Guizhou Meiling Power Sources Co.， Ltd.， Zunyi， Guizhou Province， 563099 563099
ZHOU Peican Longyou Pengchen New Material Technology Co.， Ltd.， Quzhou， Zhejiang Province， 324499 324499
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Abstract:Adding vapor grown carbon fiber （VGCF） into the carbon paper for fuel cell was innovatively proposed in this study. The influence of different methods of VGCF on the dispersion effect in the original carbon paper was studied. The physical properties， air permeability， conductivity and the graphitization degree of carbon paper with different VGCF addition amounts were also investigated. The results showed that the addition of effectively dispersed VGCF with anhydrous ethanol and dispersant into original carbon paper could increase the strength to a certain extent and improve the conductivity effectively， whereas reduced the air permeability. When the amount of VGCF was 4%， compared with the physical performence of carbon paper without VGCF， the tensile strength increased by 11.58%， the horizontal resistance decreased by 30.31%， the air permeability decreased by 11.27%， and the graphitization increased by 20.39%.
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