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

IF 3.2 3区 工程技术 Q2 CHEMISTRY, PHYSICAL Molecular Systems Design & Engineering Pub Date : 2024-03-25 DOI:10.1039/D4ME00007B
Liying Liu, Henry R. Tinker, Yusheng Wu, Jiaqi Lv, Laishi Li, Yingjiao Fang, Yuhan Wu and Yang Xu
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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.

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从 Physalis alkekengi L. 外壳中提取的硬碳作为钠离子电池的稳定阳极(受邀成为《分子系统设计与工程》杂志的新锐研究人员)
硬碳是钠离子电池(SIB)最有前途的负极材料之一。生物质衍生硬碳因其优异的材料特性、丰富的来源和成本优势而被认为是一种不错的选择。本研究以黄皮树(Physalis alkekengi L.′s)壳为前驱体,通过热解方法制备了一系列硬碳材料。研究发现,碳化温度与聚对苯二甲酸乙二酯衍生硬碳的晶格特征密切相关。温度越高,晶格的石墨化程度越高,从而产生的碳层间距越小。最佳样品具有较高的电化学性能和良好的反应动力学特性。在 0.1 A g-1 的条件下循环 100 次后,它仍能保持 291.6 mAh g-1 的容量,在 2.0 A g-1 的高速率条件下,平均容量为 61.9 mAh g-1。此外,以最佳样品为阳极、Na3V2(PO4)3 为阴极组装的全电池在 0.1 A g-1 条件下循环 100 次后,显示出 161.9 mAh g-1 的可逆容量。
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来源期刊
Molecular Systems Design & Engineering
Molecular Systems Design & Engineering Engineering-Biomedical Engineering
CiteScore
6.40
自引率
2.80%
发文量
144
期刊介绍: Molecular Systems Design & Engineering provides a hub for cutting-edge research into how understanding of molecular properties, behaviour and interactions can be used to design and assemble better materials, systems, and processes to achieve specific functions. These may have applications of technological significance and help address global challenges.
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