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燃料电池复合石墨双极板基材的研究进展:材料、结构与性能 被引量:15
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作者 樊润林 彭宇航 +3 位作者 田豪 郑俊生 明平文 张存满 《物理化学学报》 SCIE CAS CSCD 北大核心 2021年第9期94-109,共16页
双极板是燃料电池的重要组成部件,需要满足导电、抗弯强度、耐腐蚀等方面性能的要求。复合石墨双极板具有成本低、耐腐蚀性好、易成型等优势,是双极板的一个重要研究方向。复合石墨双极板的导电功能是由以石墨为代表的导电填料相互连接... 双极板是燃料电池的重要组成部件,需要满足导电、抗弯强度、耐腐蚀等方面性能的要求。复合石墨双极板具有成本低、耐腐蚀性好、易成型等优势,是双极板的一个重要研究方向。复合石墨双极板的导电功能是由以石墨为代表的导电填料相互连接形成传导网络实现的,抗弯强度及气密等性能则主要依靠树脂固化形成的基体。因此,复合石墨双极板性能不仅受到导电填料以及树脂性能的影响,同时导电填料、树脂固化形成的结构对于极板性能也有着不可忽视的影响。本文总结了导电填料及树脂的性质、改性方法等对于复合石墨极板性能的影响,并分析了分子结构以及制备工艺对于极板结构以及实用性能的影响规律。导电填料与树脂的相容性受到原料表面官能团的影响,并直接影响了导电填料的离散均匀度以及导电填料/树脂的界面性能。通过填料诱导工艺优化导电网络,能够有效提升极板的导电性能。基于对研究现状的总结,本文对复合石墨极板开发的未来发展方向进行了展望。 展开更多
关键词 复合双极板 导电性 抗弯强度 制备工艺 结构
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Effect of indirect non-thermal plasma on particle size distribution and composition of diesel engine particles
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作者 Linbo GU Yixi CAI +4 位作者 Yunxi SHI Jing WANG Xiaoyu PU Jing TIAN runlin fan 《Plasma Science and Technology》 SCIE EI CAS CSCD 2017年第11期59-66,共8页
To explore the effect of the gas source flow rate on the actual diesel exhaust particulate matter(PM), a test bench for diesel engine exhaust purification was constructed, using indirect nonthermal plasma technology... To explore the effect of the gas source flow rate on the actual diesel exhaust particulate matter(PM), a test bench for diesel engine exhaust purification was constructed, using indirect nonthermal plasma technology. The effects of different gas source flow rates on the quantity concentration, composition, and apparent activation energy of PM were investigated, using an engine exhaust particle sizer and a thermo-gravimetric analyzer. The results show that when the gas source flow rate was large, not only the maximum peak quantity concentrations of particles had a large drop, but also the peak quantity concentrations shifted to smaller particle sizes from 100 nm to 80 nm. When the gas source flow rate was 10L min^-1, the total quantity concentration greatly decreased where the removal rate of particles was 79.2%, and the variation of the different mode particle proportion was obvious. Non-thermal plasma(NTP) improved the oxidation ability of volatile matter as well as that of solid carbon. However, the NTP gas source rate had little effects on oxidation activity of volatile matter, while it strongly influenced the oxidation activity of solid carbon. Considering the quantity concentration and oxidation activity of particles, a gas source flow rate of 10L min^-1 was more appropriate for the purification of particles. 展开更多
关键词 diesel engine particulate matter non-thermal plasma gas source flow rate
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Study on carbon matrix composite bipolar plates with balance of conductivity and flexural strength 被引量:1
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作者 Junsheng Zheng Yuhang Peng +4 位作者 runlin fan Jing Chen Zize Zhan Dongmei Yao Pingwen Ming 《Chinese Chemical Letters》 SCIE CAS CSCD 2023年第5期626-630,共5页
In order to balance the conductivity and flexural strength of graphite composite bipolar plates,the influence of conductive filler on the properties of graphite composite bipolar plate was comprehensively studied by u... In order to balance the conductivity and flexural strength of graphite composite bipolar plates,the influence of conductive filler on the properties of graphite composite bipolar plate was comprehensively studied by using phenolic resin as binder,natural flake graphite as conductive substrate and functional carbon materials with different structures as auxiliary filler.The results show that the particle size of conductive substrate has an important influence on the conductivity enhancement of auxiliary filler.The influence of conductive particle size on auxiliary filler electrical conductivity improvement was first investigated in this research.The effects of various auxiliary filler concentrations on improving electrical conductivity and flexural strength were then examined.This research has substantial implications for the balance of electrical conductivity and flexural strength of graphite composite bipolar plates. 展开更多
关键词 Composite bipolar plates Graphite particle size Auxiliary fillers Electrical conductivity Flexural strength
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