摘要
为满足钠离子电池(SIBs)在高能量密度和全天候应用中的需求,开发高电压宽温域电解液至关重要。本文深入剖析了SIBs在此类苛刻条件下所面临的技术挑战,包括高电压下的电解液氧化分解与界面失效、宽温域下的动力学瓶颈,以及硬碳负极复杂的界面化学问题。在此基础上,系统综述了最新的电解液优化策略:一是从体相出发,通过溶剂分子改性和溶剂化结构调控来提升电解液的本征稳定性与离子传输动力学;二是从界面出发,利用新型功能添加剂调控策略,构筑致密且稳固的固体电解质界面/正极电解质界面(SEI/CEI)。
To meet the demands of sodium-ion batteries(SIBs)for high energy density and all-weather operation,the development of electrolytes compatible with high-voltage and wide-temperature-range is of paramount importance.This paper comprehensively dissects the technical challenges of SIBs under such stringent conditions,including electrolyte oxidative decomposition and interface failure under high-voltage,kinetic limitations across a wide-temperature-range,and the intricate interfacial chemistry of their hard carbon anodes.On this foundation,the latest electrolyte optimization strategies are systematically reviewed:firstly,enhancing the intrinsic stability and ion transport kinetics of electrolytes is addressed from the bulk phase perspective,through which solvent molecule modification and solvation structure regulation are suggested;secondly,constructing dense and robust solid electrolyte interphase(SEI)and cathode electrolyte interphase(CEI)via novel functional additive regulation strategies are proposed from the interface perspective.
作者
江依义
李潇逸
陈海霞
蒋志敏
常幸萍
纪叶林
张正华
马国强
JIANG Yiyi;LI Xiaoyi;CHEN Haixia;JIANG Zhimin;CHANG Xingping;JI Yelin;ZHANG Zhenghua;MA Guoqiang(Zhejiang Research Institute of Chemical Industry Co.,Ltd.,Hangzhou,Zhejiang 310023,China)
出处
《浙江化工》
2026年第2期9-16,29,共9页
Zhejiang Chemical Industry
关键词
钠离子电池
高电压
宽温域
电解液
硬碳负极
功能添加剂
sodium-ion batteries
high-voltage
wide-temperature-range
electrolyte
hard carbon anode
functional additive
