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A locally solvent-tethered polymer electrolyte for long-life lithium metal batteries

Chemistry

A locally solvent-tethered polymer electrolyte for long-life lithium metal batteries

Y. Zhu, Z. Lao, et al.

Discover an innovative approach to enhancing lithium-ion conductivity with a new composite polymer electrolyte, developed by a team of researchers including Yanfei Zhu and Zhoujie Lao. This breakthrough utilizes a Hofmann-DMF coordination complex, achieving impressive ionic conductivity and exceptional cycling stability.

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Playback language: English
Abstract
Solid polymer electrolytes (SPEs) offer enhanced Li+ conductivity when plasticized with high-dielectric solvents like DMF. However, DMF degradation at the anode causes poor cycle life. This paper introduces a composite polymer electrolyte using a Hofmann-DMF coordination complex. DMF is tethered to Hofmann frameworks, creating a locally DMF-rich interface for Li+ conduction. This achieves 6.5 × 10−4 S cm−1 ionic conductivity at room temperature and stable cycling for over 6000 h in Li || Li symmetric cells and 1000 cycles at 1 C in Li || SPAN full cells.
Publisher
Nature Communications
Published On
May 09, 2024
Authors
Yanfei Zhu, Zhoujie Lao, Mengtian Zhang, Tingzheng Hou, Xiao Xiao, Zhihong Piao, Gongxun Lu, Zhiyuan Han, Runhua Gao, Lu Nie, Xinru Wu, Yanze Song, Chaoyuan Ji, Jian Wang, Guangmin Zhou
Tags
solid polymer electrolytes
Li+ conductivity
Hofmann-DMF coordination complex
ionic conductivity
cycling stability

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