壳聚糖衍生多孔碳电极全水系热再生电池性能

doi:10.16085/j.issn.1000-6613.2024-1977

化工进展 ›› 2025, Vol. 44 ›› Issue (12): 6852-6858.DOI: 10.16085/j.issn.1000-6613.2024-1977

• 能源加工与技术 • 上一篇

壳聚糖衍生多孔碳电极全水系热再生电池性能

李思¹^,²(), 石雨¹^,², 张亮¹^,²(), 李俊¹^,², 朱恂¹^,², 廖强¹^,²

^1.重庆大学低品位能源利用技术及系统教育部重点实验室，重庆 400030
^2.重庆大学工程热物理研究所，重庆 400030

收稿日期:2024-12-03 修回日期:2025-03-24 出版日期:2025-12-25 发布日期:2026-01-06
通讯作者: 张亮
作者简介:李思（2000—），女，硕士研究生，研究方向为电化学能源转化。E-mail：lisi@stu.cqu.edu.cn。
基金资助:
国家自然科学基金创新研究群体项目(52021004);国家自然科学基金(51976018);重庆市自然科学基金(CSTB2022NSCQ-MSX1596);重庆归国留学人员科研基金(cx2021088);先进内燃动力全国重点实验室开放基金(K2023-13)

Electrochemical characteristics of chitosan-derived porous carbon electrodes for all-aqueous thermally regenerative batteries

LI Si¹^,²(), SHI Yu¹^,², ZHANG Liang¹^,²(), LI Jun¹^,², ZHU Xun¹^,², LIAO Qiang¹^,²

^1.Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing 400030, China
^2.Institute of Engineering Thermophysics, Chongqing University, Chongqing 400030, China

Received:2024-12-03 Revised:2025-03-24 Online:2025-12-25 Published:2026-01-06
Contact: ZHANG Liang

摘要/Abstract

摘要：

针对全水系热再生电池目前存在电极反应界面受限和传输阻力大等问题，本文利用壳聚糖制备分级孔电极来进一步提升电池性能，研究了氨浓度、壳聚糖与氢氧化钾比例的影响。结果表明，壳聚糖衍生碳电极具有丰富分级孔结构、高比表面积和亲水性，其获得的电池最大性能比传统采用碳毡的电池高23%，且其电池性能随着氨浓度和壳聚糖与氢氧化钾比例升高先增加后降低，存在最佳的氨浓度（5mol/L）和壳聚糖与氢氧化钾比例（5/8），获得最大功率密度为531W/m²。

关键词: 热再生电池, 生物质衍生多孔碳电极, 氨浓度, 壳聚糖, 氢氧化钾, 电化学

Abstract:

To address the issues of limited electrode reaction interfaces and high transport resistance in electrodes for all-aqueous thermally regenerative batteries, chitosan was used to fabricate hierarchical porous electrodes to enhance the battery performance. The effects of ammonia concentration and the ratio of chitosan to potassium hydroxide were investigated. The chitosan-derived carbon electrodes exhibited rich hierarchical pore structure, high specific surface area, and hydrophilicity, leading to a 23% improvement in battery performance compared to conventional carbon felt electrodes. The battery performance was firstly increased with ammonia concentration and the chitosan-to-potassium hydroxide ratio, and then declined. The optimal ammonia concentration (5mol/L) and chitosan-to-potassium hydroxide ratio (5/8) yield a maximum power density of 531W/m².

Key words: thermally regenerative battery, biomass-derived porous carbon electrode, ammonia concentration, chitosan, potassium hydroxide, electrochemistry

中图分类号:

TM911.3

李思, 石雨, 张亮, 李俊, 朱恂, 廖强. 壳聚糖衍生多孔碳电极全水系热再生电池性能[J]. 化工进展, 2025, 44(12): 6852-6858.

LI Si, SHI Yu, ZHANG Liang, LI Jun, ZHU Xun, LIAO Qiang. Electrochemical characteristics of chitosan-derived porous carbon electrodes for all-aqueous thermally regenerative batteries[J]. Chemical Industry and Engineering Progress, 2025, 44(12): 6852-6858.

图/表 8

图1 壳聚糖多孔碳电极全水系热再生电池示意图

图2 碳毡与壳聚糖衍生碳以及壳聚糖衍生多孔碳电极表征结果

图3 采用壳聚糖衍生碳电极与碳毡的电池产电功率

图4 不同氨浓度下电池产电功率

表1 不同壳聚糖与氢氧化钾比例下多孔电极比表面积、孔容、体积密度及振实密度比较

壳聚糖与氢氧化钾比值	比表面积/m²·g^-1	孔容/cm³·g^-1	体积密度	振实密度
3/8	208	0.35	0.054	0.068
4/8	259	0.54	0.034	0.040
5/8	444	1.65	0.023	0.027
6/8	318	1.22	0.027	0.030

图5 不同壳聚糖与氢氧化钾比例下碳材料扫描电镜图及孔径分布图

图6 不同壳聚糖与氢氧化钾比例下电池产电功率

图7 壳聚糖衍生碳电极-ATRB性能提升机制图

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壳聚糖衍生多孔碳电极全水系热再生电池性能

Electrochemical characteristics of chitosan-derived porous carbon electrodes for all-aqueous thermally regenerative batteries

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