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9. Ultra-stable and high capacity flexible lithium-ion batteries based on bimetallic MOFs derivatives aiming for wearable electronic devices

Author

Junjie Peng, Feng Wang, Jun Tao, Yuhang Yang, Yu Ding, Zhijie Liu, Zhang Man, and Lian Yu

Subjects
Materials science, Carbon nanofiber, General Chemical Engineering, Polyacrylonitrile, chemistry.chemical_element, Nanotechnology, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, Electrochemistry, 01 natural sciences, Industrial and Manufacturing Engineering, Electrospinning, 0104 chemical sciences, Anode, chemistry.chemical_compound, chemistry, Environmental Chemistry, Lithium, 0210 nano-technology, Current density, Bimetallic strip
Abstract

The special demand of wearable electronic devices has resulted in a growing interest in developing key electrode materials for high-performance flexible lithium-ion batteries. In this article, a flexible bimetallic zeolite imidazolium salt polyacrylonitrile framework was prepared by a simple electrospinning method, and directly used as self-supported anode material for high-performance lithium-ion batteries after subsequent heat treatment. Benefiting from their unique morphology and bimetallic synergism, as-prepared Co@ZnO/carbon nanofibers (CNFs) combination of MOFs derivatives and carbon nanofibers, exhibit excellent electrochemical performance for flexible lithium-ion batteries. The sample Co@ZnO/CNFs-2 delivers a specific capacity of 1104.9 mAh·g−1 after 150 cycles at a current density of 100 mA·g−1, and even 935.6 and 718.1 mAh·g−1 at high current density of 0.5 and 1 A·g−1, respectively. Remarkably, no noticeable capacity fading is observed even after 260 charge/discharge cycles.

Published
2021

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