Investigating the Interface of Li{N(SO2F)2}(NCCH2CH2CN)2 Molecular Crystal Electrolytes for 5 V Class Solid-State Batteries

IF 8.3 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2025-03-28 DOI:10.1021/acsami.4c22076

Ruijie Zheng, Shigeru Kobayashi, Mana Ogawa, Hiroto Katsuragawa, Yuki Watanabe, Jun Deng, Ryo Nakayama, Kazunori Nishio, Ryota Shimizu, Yoshitaka Tateyama, Makoto Moriya, Taro Hitosugi

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引用次数: 0

Abstract

Molecular crystals composed of lithium bis(fluorosulfonyl)amide (LiFSA) and succinonitrile (SN), hereafter referred to as Li(FSA)(SN)₂, are a promising solid electrolyte. To realize a wider application of molecular crystal solid electrolytes, it is critical to investigate the interface of Li(FSA)(SN)₂ and 5 V-class positive electrodes. Here, we studied the interface of Li(FSA)(SN)₂ with 5 V-class LiNi_0.5Mn_1.5O₄ (LNMO) positive electrodes utilizing modeled thin-film batteries. The Li(FSA)(SN)₂|LNMO interfaces degrade, leading to an increase in interface resistance and capacity loss. By inserting an amorphous Li₃PO₄ layer into the Li(FSA)(SN)₂|LNMO interface, the low interface resistance remains, and no interphase layer is observed. The discharge capacity remains at 96% after 100 charge and discharge cycles. This study demonstrated the feasibility of operating Li(FSA)(SN)₂ in a 5 V-class solid-state battery revealing the potential of molecular crystal solid electrolytes in high-energy-density batteries.

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.