氮磷共掺杂罗汉果芯衍生多孔碳助力高性能锂硫电池

doi:10.11896/cldb.25040122

材料导报

2026, Vol. 40

Issue (8): 25040122-7 https://doi.org/10.11896/cldb.25040122

无机非金属及其复合材料

氮磷共掺杂罗汉果芯衍生多孔碳助力高性能锂硫电池

李蓉江, 孙立贤^*, 徐芬^*, 石斌, 陈悦, 彭璇, 杜毛湛

桂林电子科技大学材料科学与工程学院,广西信息材料重点实验室暨广西新能源材料结构与性能协同创新中心,广西桂林 541004

Enhanced High-performance Lithium-Sulfur Batteries Performance by Nitrogen- Phosphorus Co-doped Momordica Grosvenorii Core-derived Porous Carbon

LI Rongjiang, SUN Lixian^*, XU Fen^*, SHI Bin, CHEN Yue, PENG Xuan, DU Maozhan

Guangxi Key Laboratory of Information Materials & Guangxi Collaborative Innovation Center for Structure and Properties for New Energy and Materials, School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, Guangxi, China

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摘要环境友好且可持续的碳材料是实现锂硫电池高负载和实用性的最具竞争力的策略之一,然而多硫化物的穿梭效应仍然制约锂硫电池性能的提升。本工作选用罗汉果芯为原料,以植酸为磷源、氯化锌为活化剂,制备出高比表面积(1 501 m²·g^-1)的氮磷共掺杂片层多孔碳(GCNPZ)材料。将GCNPZ用于锂硫电池正极,采用熔融扩散法使之与硫结合,得到GCNPZ/S电极材料。由于GCNPZ表面磷活性位点丰富、具有较高的比表面积和孔体积,GCNPZ/S电极表现出优异的电化学性能:0.1C下的初始放电比容量为1 310 mA·h·g^-1,经过100次充放电循环后仍保持920 mA·h·g^-1的比容量,每次循环的容量衰减率为0.30%;当电流密度提升至1C时,GCNPZ/S电极展现出更为突出的长循环性能,初始放电比容量为910 mA·h·g^-1,经过500次循环后仍维持770 mA·h·g^-1的比容量,每次循环的容量衰减率低至0.031%。

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	李蓉江
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	陈悦
	彭璇
	杜毛湛

关键词: 锂硫电池废弃生物质多孔碳磷掺杂

Abstract: Environmentally friendly and sustainable carbon materials are one of the most competitive strategies for achieving high loads and utility in li-thium-sulfur batteries. However, the shuttle effect of polysulfides still limited improvement of lithium-sulfur batteries performance. In this work, high specific surface area (1 501 m²·g^-1) nitrogen-phosphorus co-doped lamellar porous carbon material (GCNPZ) was prepared as cathode material for lithium-sulfur batteries by selecting water-soaked Momordica grosvenorii fruit cores as the raw material, phytic acid as the source of phosphorus, and zinc chloride as the activator. Finally, the GCNPZ/S electrode material was prepared by combining GCNPZ with sulfur using a melting diffusion method. The GCNPZ/S electrode was demonstrated to exhibit excellent electrochemical performance due to the abundance of phosphorus active sites on the GCNPZ surface, as well as a high specific surface area and pore volume. The initial discharge specific capacity of 1 310 mA·h·g^-1at 0.1C rate, stabilizing at 920 mA·h·g^-1 after 100 cycles (capacity decay rate of 0.30% for each cycle). The GCNPZ/S cathode was shown to have more outstanding long-cycle performance, demonstrating an initial discharge specific capacity of 910 mA·h·g^-1 at 1C rate, stabilizing at 770 mA·h·g^-1 after 500 cycles (capacity decay rate of 0.031% for each cycle).

Key words: lithium-sulfur batteries waste biomass porous carbon phosphorus doping

出版日期: 2026-04-25 发布日期: 2026-05-06

ZTFLH:

TQ129

基金资助: 国家自然科学基金(52271205;52461032;52371218);广西重点研发项目(2021AB17045);广西信息材料重点实验室基金(231006-Z);中国广西重点研发计划(2021YFB3802400);广西重点研发计划(AA24206022;2021AB17045);中德合作小组(GZ1528);广西植物功能物质可持续利用重点实验室(FPRU2022-4)

通讯作者: * 孙立贤,博士,桂林电子科技大学材料科学与工程学院教授、博/硕士研究生导师。目前主要从事制/储氢材料、相变储热材料、超级电容器电极材料、传感材料、机器学习等方面的研究。sunlx@guet.edu.cn
徐芬,博士,桂林电子科技大学材料科学与工程学院教授、博/硕士研究生导师。目前主要从事制/储氢材料、相变储热材料、超级电容器电极材料、传感材料等方面的研究。xufen@guet.edu.cn

作者简介: 李蓉江,桂林电子科技大学材料科学与工程学院硕士研究生,在孙立贤教授、徐芬教授的指导下研究锂硫电池正极材料的制备及性能。

引用本文:

李蓉江, 孙立贤, 徐芬, 石斌, 陈悦, 彭璇, 杜毛湛. 氮磷共掺杂罗汉果芯衍生多孔碳助力高性能锂硫电池[J]. 材料导报, 2026, 40(8): 25040122-7.
LI Rongjiang, SUN Lixian, XU Fen, SHI Bin, CHEN Yue, PENG Xuan, DU Maozhan. Enhanced High-performance Lithium-Sulfur Batteries Performance by Nitrogen- Phosphorus Co-doped Momordica Grosvenorii Core-derived Porous Carbon. Materials Reports, 2026, 40(8): 25040122-7.

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https://www.mater-rep.com/CN/10.11896/cldb.25040122 或 https://www.mater-rep.com/CN/Y2026/V40/I8/25040122

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