石墨烯和MXene协同增强LiFePO4电池正极材料性能研究
Performance of Graphene and MXene Co-reinforced LiFePO4 Battery Cathode Materials
李旻松 1白文伟 1郭志成1
作者信息
- 1. 云南电网有限责任公司红河供电局,云南 红河 661199
- 折叠
摘要
在合成MXene和氧化石墨烯的基础上,制备了MXene和石墨烯协同增强LiFePO4 电池的正极材料.利用XRD、SEM和TEM等技术表征了正极材料的结构,并评估了其电化学性能.MXene和石墨烯纳米片的负载可以形成良好的导电网络和离子传输通道,能同时提高电子电导率和离子电导率.对于MXene/graphene@LiFePO4 正极材料,在0.1 C下具有163.6 mA·h·g-1 的最高初始放电容量,以及在10 C下具有120.4 mA·h·g-1 的高可逆容量的最佳倍率性能,且表现出良好的循环稳定性.
Abstract
MXene/graphene@LiFePO4 composite cathode material was fabricated on the basis of the synthesis of MXene and graphene oxide.The structure of the composite cathode materials was characterized using techniques such as XRD,SEM and TEM,and its electrochemical properties were evaluated.The loading of MXene and graphene nanosheets can form a good conductive network and ion transport channel,and can simultaneously improve the electronic and ionic conductivity.For MXene/graphene@LiFePO4,it exhibited the highest initial discharge capacity of 163.6 mA·h·g-1 at 0.1 C,and the best rate performance with a high reversible capacity of 120.4 mA·h·g-1 at 10 C.Furthermore,the composite cathode material exhibited good cycling stability.
关键词
锂离子电池/LiFePO4/MXene/复合材料Key words
Lithium ion battery/LiFePO4/MXene/Composite materials引用本文复制引用
基金项目
云南省科技计划项目(22JR11RA328)
云南电网有限责任公司项目资助(YNKJXM20222255)
出版年
2024
NETL
NSTL
万方数据