材料科学
金属锂
锂(药物)
固态
电解质
金属
快离子导体
准固态
接口(物质)
化学工程
纳米技术
工程物理
物理化学
电极
冶金
复合材料
医学
化学
毛细管数
毛细管作用
色素敏化染料
工程类
内分泌学
作者
Shuoxiao Zhang,Han Li,Zhengbo Liu,Yajun Zhao,Jun Yan,Yangqian Zhang,Fangyan Liu,Qi Liu,Chen Liu,Gang Sun,Zhen‐Bo Wang,Jing Yang,Yang Ren
标识
DOI:10.1002/adfm.202401377
摘要
Abstract The practical application of all‐solid‐state lithium metal batteries (ASSLMBs) is limited by lithium (Li) anode instability including Li dendrite formation and deteriorating interface with electrolytes. Here, a functional additive, isosorbide mononitrate (ISMN) with a non‐resonant structure (O 2 −N−O−) is reported, which improves its reactivity and is utilized to build a stable N‐rich solid electrolyte interface, effectively alleviating Li dendrite and side reactions for poly(vinylidene fluoride) (PVDF)‐lithium bis(trifluoromethane sulfonyl) imide (LiTFSI)‐based electrolyte (PLE‐ISMN). In addition, the ion‐dipole interaction between ISMN and Li ions facilitates the dissociation of LiTFSI to form carrier ions, improving the ionic conductivity (4.4 × 10 −4 S cm −1 ) and transference number (0.50) of PLE‐ISMN. Consequently, the Li/Li symmetric cell delivers a high critical current density of 2.0 mA cm −2 and stable Li stripping/plating cycling over 5000 h with a capacity of 1.0 mAh cm −2 . Moreover, the Li|LiFePO 4 cell delivers an excellent initial discharge capacity of 154.0 mAh g −1 with an outstanding capacity retention of 88.9% after 500 cycles at 0.5 C. The Li|LiNi 0.8 Co 0.1 Mn 0.1 O 2 cell also exhibits a good cycling performance at 4.4 V at 1 C.
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