NiCoO2@FC复合材料的制备及储锂性能研究
Preparation and Lithium Storage Properties of NiCoO2@FC Composites
陈心莹 1李嘉庆 1朱文政 1冯倩 1黄志高1
作者信息
- 1. 福建师范大学物理与能源学院,福建省量子调控与新能源材料重点实验室,福建 福州 350117
- 折叠
摘要
采用水热法结合退火工艺制备了NiCoO2@氟化碳复合材料,并将其应用于锂离子电池负极.电化学测试结果表明,经过 100 次循环后NiCoO2@氟化碳复合材料的可逆比容量仍保持在 663.8 mA·h·g-1,显著高于NiCoO2 的482.8 mA·h·g-1.该复合材料优异的电化学性能归功于氟化碳的包覆作用.氟化碳不仅提供了良好的导电网络,可以促进锂离子和电子的传输动力学,还通过引入碳缺陷,提供了更多活性位点,从而提高了复合材料的比容量.这项研究为制备具有良好电化学性能的锂离子电池负极材料提供了一种设计策略.
Abstract
In this paper,NiCoO2@fluorocarbon(NiCoO2@FC)composite is prepared using the hydrothermal method combined with an annealing process,which is applied to the anode of a lithium-ion battery.The electrochemical results show that the reversible specific capacity of the NiCoO2@FC composite remains at 663.8 mA·h·g-1 after 100 cycles,which is significantly high-er than that of NiCoO2(482.8 mA·h·g-1).The improved electrochemical performance of the composite is attributed to the coating of the fluorocarbon coating.Fluorocarbon provides a good con-ductive network,which promotes the transport kinetics of lithium ions and electrons.Moreover,it also provides more active sites by introducing carbon defects,thereby improving the specific capaci-ty of the composite.This work provides a design strategy for preparing anode materials with good electrochemical performance for lithium-ion batteries.
关键词
锂离子电池/负极/NiCoO2/氟化碳/水热法/退火/导电网络Key words
lithium-ion battery/anode/NiCoO2/fluorocarbon/hydrothermal method/an-nealing/conductive network引用本文复制引用
出版年
2025
国家科技期刊平台
NSTL
万方数据