Issue 6, 2024

Hard carbon derived from Physalis alkekengi L. husks as a stable anode for sodium-ion batteries

Abstract

Hard carbon is one of the most promising anode materials for sodium-ion batteries (SIBs). Biomass-derived hard carbon is deemed to be a good choice because of its superior material properties, abundance source, and cost advantages. This work used Physalis alkekengi L.'s husks as precursors to prepare a series of hard carbon materials via a pyrolysis method. It was found that the carbonization temperature is closely linked to the lattice characteristics of PLH-derived hard carbon. Higher temperatures promote the degree of graphitization of the lattice, which produces a smaller carbon interlayer spacing. The optimal sample demonstrated a high electrochemical performance and good reaction kinetics. It maintained a capacity of 291.6 mA h g−1 after 100 cycles at 0.1 A g−1 and delivered an average capacity of 61.9 mA h g−1 at a high rate of 2.0 A g−1. Furthermore, a full cell assembled using the optimal sample as an anode and Na3V2(PO4)3 as a cathode gave a high reversible capacity of 161.9 mA h g−1 at 0.1 A g−1 after 100 cycles.

Graphical abstract: Hard carbon derived from Physalis alkekengi L. husks as a stable anode for sodium-ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
08 yan 2024
Accepted
25 mar 2024
First published
25 mar 2024
This article is Open Access
Creative Commons BY license

Mol. Syst. Des. Eng., 2024,9, 660-669

Hard carbon derived from Physalis alkekengi L. husks as a stable anode for sodium-ion batteries

L. Liu, H. R. Tinker, Y. Wu, J. Lv, L. Li, Y. Fang, Y. Wu and Y. Xu, Mol. Syst. Des. Eng., 2024, 9, 660 DOI: 10.1039/D4ME00007B

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