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A biodegradable nano-composite membrane for high-safety and durable lithium ion batteries
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  • Ting Wang,
  • Na Liu,
  • Hui Zhou,
  • Mingjun Chen
Ting Wang
Xihua University

Corresponding Author:[email protected]

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Na Liu
Xihua University
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Hui Zhou
Xihua University
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Mingjun Chen
Xihua University
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As a key component of lithium-ion batteries (LIBs), separator plays a crucial role in the performance and safety of LIBs. In this paper, a cellulose based porous membrane modified by nano CaCO3 is prepared conveniently by electrospinning. The membrane exhibits rich fibrous porous networks and uniform distribution of nanoparticles. Strengthed by CaCO3, the tensile strength of the cellulose porous membrane elevates from 4.7 ± 0.4 MPa to 7.7 ± 0.7 MPa. Besides, the modified membranes possess improved thermal stability and can maintain their original size after treatment at 150 °C and 180 °C. Also, the electrolyte uptake of cellulose/CaCO3 membrane is 73% higher than that of the pure cellulose membrane. Thus, the ionic conductivity of membrane achieves 1.08 mS cm-1 and the electrochemical window is about 4.8V, which meets the practical requirements of LIBs. Significantly, LiFePO4/Li battery this membrane can run for 230 cycles with a capacity retention of 97.4% and a discharge capacity of 149.0 mAh g-1, demonstrating the huge potential for high safety and next-generation LIBs.
05 Mar 2023Submitted to Micro & Nano Letters
06 Mar 2023Submission Checks Completed
06 Mar 2023Assigned to Editor
08 Mar 2023Reviewer(s) Assigned
26 Mar 2023Review(s) Completed, Editorial Evaluation Pending
02 Apr 2023Editorial Decision: Revise Major
15 Apr 20231st Revision Received
17 Apr 2023Submission Checks Completed
17 Apr 2023Assigned to Editor
20 Apr 2023Reviewer(s) Assigned
20 Apr 2023Review(s) Completed, Editorial Evaluation Pending
25 Apr 2023Editorial Decision: Accept