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材料导报  2025, Vol. 39 Issue (7): 24030138-7    https://doi.org/10.11896/cldb.24030138
  无机非金属及其复合材料 |
具有P和S双空位的镍钴纳米花复合材料用作超级电容器电极的研究
吴学虎, 孙立贤*, 徐芬*, 李彬, 方淞文, 张靖, 陈翔, 宋领君, 卢俊铭, 高源, 杜毛湛, 徐如丹
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与材料结构与性能协同创新中心, 广西 桂林 541004
A Study on Nickel-Cobalt Nanoflower Composite Materials with P and S Double Vacancies as Supercapacitor Electrodes
WU Xuehu, SUN Lixian*, XU Fen*, LI Bin, FANG Songwen, ZHANG Jing, CHEN Xiang, SONG Lingjun, LU Junming, GAO Yuan, DU Maozhan, XU Rudan
Guangxi Key Laboratory of Information Materials & Guangxi Collaborative Innovation Center for Structure and Properties for New Energy and Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, Guangxi, China
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摘要 近年来,多元过渡金属氧化物和硫化物在超级电容器电极材料领域备受关注,其中NiCo2S4其低成本、低电负性和强的电化学活性而成为研究热点。然而,NiCo2S4电子电导率较低,反应动力学较慢,导致比容量低,倍率性能差,容量衰减快,实际应用受限。因此,提高NiCo2S4的电导率和反应速率是提高其电化学性能的关键。本工作采用水热法、硫化法和磷化法制备了具有P、S双空位的镍钴纳米花(P-NiCo2Sn),其在磷化过程中可以同时获得P掺杂和S空位双缺陷。双缺陷可以调节电子结构,产生丰富的电化学位点,促进电子转移和改善反应动力学。该纳米花结构的比表面积为66.342 m2·g-1。P-NiCo2Sn电极在1 A·g-1电流密度下的比电容为1 257 F·g-1,在800 W·kg-1功率密度下表现出44.2 Wh·kg-1的能量密度。组装的P-NiCo2Sn//AC非对称超级电容器在10 000次连续充电/放电循环后的容量保持率为89.9%。
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吴学虎
孙立贤
徐芬
李彬
方淞文
张靖
陈翔
宋领君
卢俊铭
高源
杜毛湛
徐如丹
关键词:  缺陷  磷化法  纳米花  高循环性能    
Abstract: Multinary transition metal oxides and sulfides have garnered intensive interest in the field of supercapacitor electrodes, among which NiCo2S4 has been considered as a hotspot owing to its low cost, low electronegativity and strong electrochemical activity. However, its low electron conductivity and sluggish reaction kinetics have resulted in low specific capacitance, poor rate performance, and rapid capacity decay, limiting its practical applications. Therefore, enhancing the electron conductivity and reaction kinetics of NiCo2S4 is crucial for improving its electrochemical performance. In this study, phosphorus and sulfur co-defected nickel cobalt nanoflowers (P-NiCo2Sn) were synthesized via hydrothermal, sulfidation, and phosphorization methods. During the phosphorization process, both P doping and S vacancy double defects were obtained. These double defects can modulate the electronic structure, generate abundant electrochemical active sites, facilitate electron transfer, and promote reaction dynamics. Moreover, the nanoflower structure has a specific surface area of 66.342 m2·g-1. The P-NiCo2Sn electrode exhibits a specific capacitance of 1 257 F·g-1 at a current density of 1 A·g-1, and an energy density of 44.2 Wh·kg-1 at a power density of 800 W·kg-1. The assembled P-NiCo2Sn//AC asymmetric supercapacitor retains 89.9% of its capacity after 10 000 consecutive charge/discharge cycles.
Key words:  defect    phosphorization method    nanoflowers    high cycling performance
出版日期:  2025-04-10      发布日期:  2025-04-10
ZTFLH:  TB34  
基金资助: 广西科技计划(桂科AA24206022);国家自然科学基金(U20A20237;52461032;52371218;52271205;552101245);广西科学研究与技术开发计划项目(AA19182014;AD17195073;AA17202030-1;2021AB17045AB21220027);国家重点研发计划(2018YFB1502103;2018YFB1502105;2022YFB4003200);广西八桂学者基金;桂林漓江学者基金;广西新能源与新材料结构与性能协同创新中心;广西先进功能材料基础与应用人才小高地;桂林市科学研究与技术开发项目(20210102-4);广西信息材料重点实验室(201001);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工作。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工作。xufen@guet.edu.cn   
作者简介:  吴学虎,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、徐芬教授的指导下进行研究。主要研究领域为超级电容器电极材料的制备及性能。
引用本文:    
吴学虎, 孙立贤, 徐芬, 李彬, 方淞文, 张靖, 陈翔, 宋领君, 卢俊铭, 高源, 杜毛湛, 徐如丹. 具有P和S双空位的镍钴纳米花复合材料用作超级电容器电极的研究[J]. 材料导报, 2025, 39(7): 24030138-7.
WU Xuehu, SUN Lixian, XU Fen, LI Bin, FANG Songwen, ZHANG Jing, CHEN Xiang, SONG Lingjun, LU Junming, GAO Yuan, DU Maozhan, XU Rudan. A Study on Nickel-Cobalt Nanoflower Composite Materials with P and S Double Vacancies as Supercapacitor Electrodes. Materials Reports, 2025, 39(7): 24030138-7.
链接本文:  
https://www.mater-rep.com/CN/10.11896/cldb.24030138  或          https://www.mater-rep.com/CN/Y2025/V39/I7/24030138
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