Modification of Nitrate Ion Enables Stable Solid Electrolyte Interphase in Lithium Metal Batteries

Li Peng Hou, Nan Yao, Jin Xie, Peng Shi, Shu Yu Sun, Cheng Bin Jin, Cheng Meng Chen, Quan Bing Liu, Bo Quan Li, Xue Qiang Zhang*, Qiang Zhang*

*此作品的通讯作者

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摘要

The lifespan of high-energy-density lithium metal batteries (LMBs) is hindered by heterogeneous solid electrolyte interphase (SEI). The rational design of electrolytes is strongly considered to obtain uniform SEI in working batteries. Herein, a modification of nitrate ion (NO3) is proposed and validated to improve the homogeneity of the SEI in practical LMBs. NO3 is connected to an ether-based moiety to form isosorbide dinitrate (ISDN) to break the resonance structure of NO3 and improve the reducibility. The decomposition of non-resonant −NO3 in ISDN enriches SEI with abundant LiNxOy and induces uniform lithium deposition. Lithium–sulfur batteries with ISDN additives deliver a capacity retention of 83.7 % for 100 cycles compared with rapid decay with LiNO3 after 55 cycles. Moreover, lithium–sulfur pouch cells with ISDN additives provide a specific energy of 319 Wh kg−1 and undergo 20 cycles. This work provides a realistic reference in designing additives to modify the SEI for stabilizing LMBs.

源语言英语
文章编号e202201406
期刊Angewandte Chemie - International Edition
61
20
DOI
出版状态已出版 - 9 5月 2022

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Hou, L. P., Yao, N., Xie, J., Shi, P., Sun, S. Y., Jin, C. B., Chen, C. M., Liu, Q. B., Li, B. Q., Zhang, X. Q., & Zhang, Q. (2022). Modification of Nitrate Ion Enables Stable Solid Electrolyte Interphase in Lithium Metal Batteries. Angewandte Chemie - International Edition, 61(20), 文章 e202201406. https://doi.org/10.1002/anie.202201406