碳纤维与α-Fe_2O_3复合材料在锂离子电池负极中的应用研究进展  

Research progress of iron oxide-carbon fiber composite as cathode in lithium-ion battery

作　　者：孙长兵 陈思浩[2] Sun Changbing;Chen Sihao(College of Chemistry and Chemical Engineering,Shanghai University of Engineering Science,Shanghai 201620;Multidisciplinary Center for Advanced Materials,Shanghai University of Engineering Science,Shanghai 201620)

机构地区：[1]上海工程技术大学化学化工学院,上海201620 [2]上海工程技术大学先进材料跨学科中心,上海201620

出　　处：《化工新型材料》2018年第11期49-53,共5页New Chemical Materials

摘　　要：锂离子电池(LIBs)是目前存在的能量密度最高的二次储能电池,但是商业化的LIBs远远满足不了未来的电子能源设备需求,原因在于其负极材料石墨的理论容量只有372mAh/g。α-Fe_2O_3表现出很高的理论容量,能弥补石墨的不足。然而,其体积膨胀造成循环寿命和倍率性能差是当前面临的主要问题。碳纤维与α-Fe_2O_3复合,能够有效缓解体积膨胀,改善电化学性能。综合了碳纤维的制备方法及其在锂离子电池负极中的应用,讨论了α-Fe_2O_3在锂离子电池负极中应用面临的问题及解决方法,报道了碳纤维与α-Fe_2O_3复合材料在锂离子电池负极中应用的研究进展。Lithium-ion batteries (LIBs)is the highest energy density of secondary energy storage batteries at present,but commercial lithium-ion batteries gradually cannot satisfy the future demand of electronic energy equipment due to low theoretical capacity of graphite cathode material (372mAh/g).α-Fe2O3possesses high theoretical capacity compared with graphite,which can make up for the shortcoming of graphite.However,its poor cycle life and rate capability,resulting from volume expansion,are the main problems.α-Fe2O3-C fiber composites can buffer volume expansion during charge-discharge process,and improve the electrochemical performance.Cakbon fiber,α-Fe2O3 and α-Fe2O3-C fiber composites as cathodes in lithium-ion batteries were reviewed in detail.

关 键 词：锂离子电池 Α-FE2O3 碳纤维 负极材料 

分 类 号：TM912[电气工程—电力电子与电力传动]