4.6 Article

Waste to life: Low-cost, self-standing, 2D carbon fiber green Li-ion battery anode made from end-of-life cotton textile

期刊

ELECTROCHIMICA ACTA
卷 368, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2020.137644

关键词

Li-ion battery; Controlled pyrolysis; 2D carbon fiber anode; Cycling performance; Post cycling analysis

资金

  1. Italian Ministry of Economic Development
  2. EU's H2020 (RI) program [GA 730957]
  3. European Union's Horizon 2020 research and innovation program MODCOMP [685844]
  4. Ministry of Economic Affairs, Innovation, Digitalization, Energy of the State North Rhine-Westphalia in Germany (MWIDE NRW) [313-W044A]
  5. EU FP7 Project Functionalized Innovative Carbon Fibers Developed from Novel Precursors with Cost Efficiency and Tailored Properties (FIBRALSPEC) [604248]

向作者/读者索取更多资源

A self-standing and flexible Li-ion battery negative electrode made of interconnected two-dimensional carbonized cotton fibers was developed using a controlled pyrolysis method. The electrode showed excellent cycling performance and high discharge capacity in the voltage range of 0.02 - 1.2 V, making it a promising candidate for high-performance lithium-ion batteries at ambient temperature.
In this study, self-standing and flexible Li-ion battery negative electrodes made of interconnected two-dimensional carbonized cotton fibers are developed by using a controlled pyrolysis method, and their electrochemical performance in laboratory-scale lithium-based cells is investigated at ambient temperature. By applying this binder- and current collector-free cotton-based carbon fiber electrode, both the Li+-ion intercalation and capacity decay mechanisms are explored using conventional organic carbonate-based liquid electrolyte. The cotton-based carbon fiber electrode shows excellent cycling performance and delivers a high discharge capacity in the voltage range of 0.02 - 1.2 V. The post cycling analysis of carbon fiber using HR-TEM shows the major SEI layer components formed at the surface of the active fibers during the charge/discharge process. The same electrode is used to assemble a lab-scale Li-ion full cell with high mass loading LiFePO4-based composite electrode, which demonstrates excellent cycling stability, high Coulombic efficiency and remarkable rate capability at ambient temperature. (C) 2020 Elsevier Ltd. All rights reserved.

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