Scalable semi-solid batteries based on hybrid polymer-liquid electrolytes

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作者

Kyeong-Seok Oh¹ , Shuai Yuan² , Sang-Young Lee¹

海报摘要: Despite their potential as post lithium-ion batteries, solid-state Li-metal batteries are struggling with insufficient electrochemical sustainability and ambient operation limitations. These challenges mainly stem from lack of reliable solid-state electrolytes. Here, a new class of single-ion conducting quasi-solid-state soft electrolyte (SICSE) for practical semi-solid Li-metal batteries (SSLMBs) is demonstrated. The SICSE consists of an ion-rectifying compliant skeleton and a nonflammable coordinated electrolyte. Rheology-tuned SICSE pastes, in combination with UV curing-assisted multistage printing, allow fabrication of seamlessly integrated SSLMBs (composed of a Li-metal anode and LiNi0.8Co0.1Mn0.1 cathode) without undergoing high-pressure/high-temperature manufacturing steps. The single-ion conducting capability of the SICSE plays a viable role in stabilizing the interfaces with the electrodes. The resulting SSLMB full cell exhibits stable cycling performance and bipolar configurations with tunable voltages and high gravimetric/volumetric energy densities (476 Wh kgcell−1/1102 Wh Lcell−1 at four-stacked cells) under ambient operating conditions, along with low-temperature performance, mechanical foldability, and nonflammability.

关键词: Single-ion conductor, Soft electrolytes, Semi-solid lithium metal batteries, Ambient operation, Multistage printing

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数据可用性声明: The datasets generated during and / or analyzed during the current study are available from the corresponding author on reasonable request.

知识共享许可协议: Copyright © 2023 Oh et al. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.