DataVXACS Materials LettersPaper
journal article·2025-04-07

Engineering an Inorganic-Rich Interphase with Versatile Nonflammable Electrolytes toward Stable Alkali Metal Batteries

Shuo Zhang, Guo Yang, Yanan Lai, Tongyue Xu, Xinwei Shi, Xin Zhong, Mingjin Cui, Menghao Yang, Jiwoong Bae, Yu Ding

ACS Materials Letters· Volume 7· Issue 4
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Source abstract

Abstract

Alkali metal-based anodes are considered key to increasing the energy density of batteries thanks to the low redox potential and high capacity. Nevertheless, their practical application has been hampered by safety issues caused by the high reactivity of alkali metals, as well as the flammability of conventional organic electrolytes. In this study, we report a type of intrinsically nonflammable, cost-effective, and high-performance electrolytes. Such a novel flame-retardant electrolyte consists of heptafluoro-1-methoxypropane and fluoroethylene carbonate. In the proof-of-concept demonstration, the LiCoO 2 -based battery achieves the capacity of 182.6 mAh g –1 at a rate of 5C, with 81.2% capacity retention after 300 cycles even at a high upper cutoff voltage of 4.6 V. The Na ion battery can reach a capacity retention of 90.6% at an ultrahigh rate of 30C, and the K ion battery retains 84.2% of its initial capacity after 200 cycles.
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Research context

Energy storage

OpenAlex topics: Advanced Battery Materials and Technologies · Advancements in Battery Materials · Advanced battery technologies research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Center of Energy Storage Materials & Technology, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid State Microstructures, and Collaborative Innovation Center of Advanced Microstructures

Nanjing University

Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials, Institute of New Energy for Vehicles, School of Materials Science and Engineering

Tongji University

Institute of Energy Materials Science

University of Shanghai for Science and Technology

School of Mechanical Engineering

Hanyang University

Funding

Natural Science Foundation of Shanghai Municipality · National Key Research and Development Program of China · National Research Foundation of Korea · Hanyang University · Natural Science Foundation of Jiangsu Province · National Natural Science Foundation of China · National Laboratory Foundation of Solid State Microstructures

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