稳定可逆的氟化石墨纳米片涂层锌金属负极

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中文摘要：设计了一种采用氟化石墨纳米片涂层改性的高稳定锌金属负极.涂层具有多孔结构,阻止锌离子横向传质,并抑制枝晶生长;氟原子的高电负性形成近乎超疏水的固液界面,减少溶剂水与锌基体之间的相互作用,抑制析氢腐蚀和其他副反应.涂层负极表现出优异的循环稳定性,对称电池在电流密度5 mA/cm2条件下稳定循环超过1400 h;使用NH4V4O10正极的全电池在循环1000次后容量保持率为92.2％.

外文标题：Stable and reversible zinc metal anode with fluorinated graphite nanosheets surface coating

外文摘要：A highly stable zinc metal anode modified with a fluorinated graphite nanosheets(FGNSs)coating was designed.The porous structure of the coating layer effectively hinders lateral mass transfer of Zn ions and suppresses dendrite growth.Moreover,the high electronegativity exhibited by fluorine atoms creates an almost superhydrophobic solid-liquid interface,thereby reducing the interaction between solvent water and the zinc substrate.Consequently,this leads to a significant inhibition of hydrogen evolution corrosion and other side reactions.The modified anode demonstrates exceptional cycling stability,as symmetric cells exhibit sustained cycling for over 1400 h at a current density of 5 mA/cm2.Moreover,the full cells with NH4V4O10 cathode exhibit an impressive capacity retention rate of 92.2％after undergoing 1000 cycles.

外文关键词：

fluorinated graphitehydrophobic coatinganti-corrosiondendrite suppressionzinc metal anode

作者：

常鸿、罗振亚、石雪茹、曹鑫鑫、梁叔全

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作者单位：

中南大学材料科学与工程学院电子封装及先进功能材料湖南省重点实验室,长沙 410083

湘潭大学材料科学与工程学院,湘潭 411105

关键词：

氟化石墨疏水涂层抗腐蚀枝晶抑制锌金属负极

基金：

Young Elite Scientists Sponsorship Program by CAST,ChinaScience and Technology Innovation Program of Hunan Province,ChinaNatural Science Foundation of Hunan Province,ChinaScientific Research Fund of Hunan Provincial Education Department,China

项目编号：

2023QNRC0012022RC10782023JJ1006023A0003

出版年：

2024

DOI：

10.1016/S1003-6326(24)66613-6

中国有色金属学报(英文版)

中国有色金属学会

中国有色金属学报(英文版)

CSTPCD

影响因子：1.183

ISSN：1003-6326

年,卷(期)：2024.34(10)