journal article·2024-05-10

Deciphering the Interface Failure Mechanism for Aqueous Na-Ion Batteries at Low Temperatures

Shuai Han, Qiubo Guo, Huican Mao, Zilin Hu, Keren Lu, Shuwei Li, Yaxiang Lu, Hong Li, Xuejie Huang, Liquan Chen, Yong-Sheng Hu

ACS Energy Letters· Volume 9· Issue 5
Publisher page

Abstract

Recently, advances in simply lowering the freezing point of dilute aqueous electrolytes have somewhat improved the low-temperature performance of aqueous Na-ion batteries (ANIBs), which promote applications in grid-scale energy storage across multiple scenarios. However, the inconsistency between the freezing points of the electrolytes and the stable operating temperature range for most batteries suggests that there are other crucial factors at play. In this work, we redirect our efforts toward elucidating the intricate interfacial aspects by employing diverse electrode types and electrolytes with varying concentrations. Along this line, a “selective interface blocking” mechanism is proposed for battery failure at low temperatures, involving the independent precipitation of ice on the anode side and salt on the cathode side at high potentials, regardless of frozen electrolytes. Our research sheds new light on the intricate relationship between interfaces and low-temperature performance, redefining and systematically constructing the failure mechanism in ANIBs.
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Research context

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

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

Affiliations

Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

Key Laboratory for Soft Chemistry and Functional Materials, Ministry of Education, School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China

Department of Energy Storage Science and Engineering, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China

Tianmu Lake Institute of Advanced Energy Storage Technologies Co. Ltd., Liyang 213300, Jiangsu China

Huairou Division, Institute of Physics, Chinese Academy of Sciences, Beijing 101400, China

Yangtze River Delta Physics Research Center Co. Ltd, Liyang 213300, China

Funding

Youth Innovation Promotion Association of the Chinese Academy of Sciences · Fundamental Research Funds for the Central Universities · National Natural Science Foundation of China · Jiangsu Province Carbon Peak and Neutrality Innovation Program

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