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 1 2024
Accepted
25 3 2024
First published
25 3 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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