'Tree-Trunk' Design for Flexible Quasi-Solid-State Electrolytes with Hierarchical Ion-Channels Enabling Ultralong-Life Lithium-Metal Batteries

Yun Zheng; Na Yang; Rui GaoZhaoqiang LiHaozhen DouGaoran LiLanting QianYaping DengJiequan LiangLeixin YangYizhou LiuQianyi MaDan LuoNing ZhuKecheng LiXin WangZhongwei Chen

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'Tree-Trunk' Design for Flexible Quasi-Solid-State Electrolytes with Hierarchical Ion-Channels Enabling Ultralong-Life Lithium-Metal Batteries

机译：'Tree-Trunk' Design for Flexible Quasi-Solid-State Electrolytes with Hierarchical Ion-Channels Enabling Ultralong-Life Lithium-Metal Batteries

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The construction of robust (quasi)-solid-state electrolyte (SSE) for flexible lithium-metal batteries is desirable but extremely challenging. Herein, a novel, flexible, and robust quasi-solid-state electrolyte (QSSE) with a “tree-trunk” design is reported for ultralong-life lithium-metal batteries (LMBs). An in-situgrown metal–organic framework (MOF) layer covers the cellulose-based framework to form hierarchical ion-channels, enabling rapid ionic transfer kinetics and excellent durability. A conductivity of 1.36 × 10~(?3) S cm~(?1), a transference number of 0.72, an electrochemical window of 5.26 V, and a good rate performance are achieved. The flexible LMBs fabricated with as-designed QSSEs deliver areal capacity of up to 3.1 mAh cm~(?2) at the initial cycle with high mass loading of 14.8 mg cm~(?2) in Li-NCM811 cells and can retain ≈80% capacity retention after 300 cycles. An ultralong-life of 3000 cycles (6000 h) is also achieved in Li-LiFePO_4 cells. This work presents a promising route in constructing a flexible QSSE toward ultralong-life LMBs, and also provides a design rationale for material and structure development in the area of energy storage and conversion.

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《Advanced Materials》 |2022年第44期|2203417.1-2203417.11|共11页
作者
Yun Zheng; Na Yang; Rui GaoZhaoqiang LiHaozhen DouGaoran LiLanting QianYaping DengJiequan LiangLeixin YangYizhou LiuQianyi MaDan LuoNing ZhuKecheng LiXin WangZhongwei Chen;
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Department of Chemical Engineering University of Waterloo 200 University Ave. W, Waterloo, Ontario N2L 3G1, Canada;

Canadian Light Source 44 Innovation Blvd, Saskatoon, SK S7N 2V3, Canada;

Department of Chemical and Paper Engineering Western Michigan University 1903 W Michigan Ave, Kalamazoo, MI 49008-5462, USASouth China Academy of Advanced Optoelectronics School of Information and Optoelectronic Science and Engineering International Academy of Optoelectronics at Zhaoqing South China Normal University Guangzhou 510006, ChinaDepartment of Chemical Engineering University of Waterloo 200 University Ave. W, Waterloo, Ontario N2L 3G1, Canada,South China Academy of Advanced Optoelectronics School of Information and Optoelectronic Science and Engineering International Academy of Op;

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正文语种英语
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cellulose; hierarchical ion-channels; metal–organic frameworks; quasisolid-sate electrolyte; “tree-trunk” structure;

'Tree-Trunk' Design for Flexible Quasi-Solid-State Electrolytes with Hierarchical Ion-Channels Enabling Ultralong-Life Lithium-Metal Batteries

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