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Constructing Robust Electrode/Electrolyte Interphases for Highly Stable Lithium–Sulfurized Polyacrylonitrile Batteries
Author(s) -
Shao Siyuan,
Hou Jinze,
Ni Youxuan,
Zhu Chunyan,
Wu Shuang,
Liu Xinyi,
Wang Can,
Zhang Kai,
Yan Zhenhua,
Lu Yong,
Chen Jun
Publication year - 2025
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202503214
Abstract Lithium–sulfurized polyacrylonitrile (SPAN) batteries show great promise for energy storage, but are plagued by poor cycling stability, which can be attributed to unfavorable electrode/electrolyte interphases for both anode and cathode. Here we design and achieve the anion‐moderate solvation structure based interconnected clusters in electrolyte by regulating the interactions of solvent with Li + and diluent to construct robust anode/electrolyte and cathode/electrolyte interphases simultaneously for high‐performance Li–SPAN batteries. The optimal electrolyte endows Li plating/stripping with a high Coulombic efficiency of 99.47% at 1 mA cm −2 in Li||Cu cells. The Li–SPAN batteries show excellent cycling stability with a high capacity retention of 94.21% after 1215 cycles. Moreover, the assembled pouch‐type Li–SPAN battery under limited electrolyte condition (2.40 g Ah −1 ) achieves a capacity of 3.75 Ah, corresponding to a high energy density of 180 Wh kg −1 based on the total mass of the battery. This work provides a good electrolyte design principle to construct robust anode/electrolyte and cathode/electrolyte interphases for batteries.
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