石墨烯导电剂研究进展

Research progress of graphene conductive agent

对近年来石墨烯导电剂的研究,从更好发挥石墨烯优异电子导电性及改善石墨烯对锂离子的位阻效应两方面进行总结。总结发现目前的研究对石墨烯导电剂的性能研究并没有形成统一认识,不同研究中甚至存在相互矛盾的结论。通过对前人的研究更进一步探索,发现石墨烯导电剂的研究往往根据石墨烯性能和扣电测试的结果,依据经验将性能优劣归因于石墨烯导电剂对极片电子电导或者离子电导影响,缺少直接证据和综合考虑。对造成这种现象的问题进行总结,并提出可改进的方法,期望为石墨烯导电剂的商业化发展提供新思路。

The research of graphene conductive agents in recent years is summarized from two aspects:better exerting the excellent electronic conductivity of graphene and improving the steric effect on lithium ions.It is found that the current research has not formed a unified understanding on the performance of graphene conductive agent,and there are even contradictory conclusions in different studies.Through further exploration of previous research,it is found that the research of graphene conductive agent is often based on the graphene performance and the results of the half-cell test,and the performance is attributed to the effect of graphene conductive agent on the electronic conductivity or ionic conductivity of the electrode plate based on experience,lacking direct evidence and comprehensive consideration.The problems causing this phenomenon are summarized in this paper,and the methods that can be improved are proposed.It is expected to provide new ideas for the commercial development of graphene conductive agents.