Dual‐Salt Electrolyte Additives Enabled Stable Lithium Metal Anode/Lithium–Manganese‐Rich Cathode Batteries

Autor: Junhua Zhou, Xueyu Lian, Qitao Shi, Yu Liu, Xiaoqin Yang, Alicja Bachmatiuk, Lijun Liu, Jingyu Sun, Ruizhi Yang, Jin-Ho Choi, Mark H. Rummeli
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Advanced Energy & Sustainability Research, Vol 3, Iss 1, Pp n/a-n/a (2022)
Druh dokumentu: article
ISSN: 2699-9412
33473641
DOI: 10.1002/aesr.202100140
Popis: Although lithium (Li) metal anode/lithium–manganese‐rich (LMR) cathode batteries have an ultrahigh energy density, the highly active Li metal and structural deterioration of LMR can make the usage of these batteries difficult. Herein, a multifunctional electrolyte containing LiBF4 and LiFSI dual‐salt additives is designed, which enables the superior cyclability of Li/LMR cells with capacity retentions of ≈83.4%, 80.4%, and 76.6% after 400 cycles at 0.5, 1, and 2 C, respectively. The dual‐salt electrolyte can form a thin, uniform, and inorganic species‐rich solid electrolyte interphase (SEI) and cathode electrolyte interphase (CEI). In addition, it alleviates the bulk Li corrosion and enhances the structural sustainability of LMR cathode. Moreover, the electrolyte design strategy provides insights to develop other high‐voltage lithium metal batteries (HVLMBs) to enhance the cycle stability.
Databáze: Directory of Open Access Journals
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