石墨烯锂离子电容器的制备及其性能研究  

Preparation and Capacitive Performance of MnO2@MoO3 Core-shell Nanomaterial

作　　者：邱文达[1] 黎彧[1] 肖红兵 周权华 QIU Wenda;LI Yu;XIAO Hongbing;Zhou Quanhua(Guangdong Engineering Technology Research Center for Special Building Materials and Green Preparation,Foshan Rsearch Center for Special Functional Building Materials and its Green Preparation Technology,School of Eco-environment Technology,Guangdong Industry Polytechnic,Guangzhou510300,China)

机构地区：[1]广东轻工职业技术学院生态环境技术学院广东省特种建筑材料及其绿色制备工程技术研究中心佛山市特种功能性建筑材料及其绿色制备技术工程中心

出　　处：《广东轻工职业技术学院学报》2019年第3期1-6,共6页Journal of Guangdong Industry Polytechnic

基　　金：广州市科学研究计划一般项目(201804010196);广东省教育厅青年创新人才类项目(2017GkQNCX002);广东轻工职业技术学院自然科学基金项目(KJFH2018-001);广东省高等职业院校珠江学者岗位计划资助项目(2015);广东省自然科学基金项目(2016A030313761);广东省高校创新团队项目(2017GKCXTD001);广东轻院珠江学者人才类项目(RC2015-001);2019年广东省大学生科技创新培育专项(pdjh2019a0683)

摘　　要：本实验制备了B、N共掺杂的3D石墨烯,并将其作为锂离子电容器的容量型阴极材料和电池型阳极材料。通过合理的设计,所制备的B、N共掺杂3D石墨烯(BN-3DG)作为锂离子电容器的阴极材料和阳极材料,其电化学性能均得到了明显的提升。构建了一个4.5 V BNG//BNG锂离子电容器件。当器件具有220 W h·kg^-1高能量密度的同时,也具有22.5 kW·kg^-1的高功率密度,以及良好的循环稳定性。Because the charge storage capacity and electrode kinetics does not match between the positive and negative electrodes,high energy density at high power density is still a challenge for the current Li-ion capacitors(LICs).In this work,B and N co-doped 3D graphene was prepared by a simple method and used as capacitive cathode and battery anode for LICs.The co-doping of B and N plays an important role in adjusting the porosity,functional groups and electrical conductivity of 3D graphene.The prepared B and N co-doped 3D graphene was used as the cathode and anode for LICs,and its electrochemical properties have been significantly improved by reasonable design.This greatly reduces the mismatch between the two electrodes.A 4.5 V BNG//BNG LICs device was constructed with excellent energy density and power capabilities compared to other reported LICs configurations.In particular,the as-fabricated BNG//BNG LICs device can deliver a large energy density of 220 W h·kg^-1 and a high power density of 22.5 kW·kg^-1,as well as good cycle stability.

关 键 词：锂离子电容器 石墨烯 电化学性能 能量密度 功率密度 

分 类 号：TM53[电气工程—电器]