Ni(OH)2基超级电容器电极材料的研究进展-中国材料进展

文章信息/Info

Title:: Research Progress of Ni(OH)2-Based Supercapacitor Electrode Materials

Author(s):: XUE Dan; YUAN Fanshu; ZHU Chunmao; WU Qi; WANG D; WEI Jie; ZHANG Qianli; School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou 215009, China

Keywords:: supercapacitor; Ni(OH)2-based electrode; electrochemical performance; nanostructure

摘要:: 超级电容器具有功率密度高、循环寿命长、充放电速度快等优点，在能源领域有着巨大的应用潜力。电极材料作为超级电容器的核心部件，其性能对电容器储能性能有着至关重要的影响。氢氧化镍（Ni(OH)2）成本低、来源丰富、理论容量高、环境友好、在碱性电解质中稳定性高，常用作超级电容器电极材料。然而，Ni(OH)2在超级电容器充放电过程中仍存在导电率低、分散性差、比表面积有限、体积收缩等问题亟待解决。综述了近5年以来Ni(OH)2与碳基材料、金属氧化物、金属硫化物、金属硒化物、氢氧化物复合制备Ni(OH)2基超级电容器电极材料的研究进展，并分析讨论了微纳结构等因素对其电化学性能的影响，总结了目前Ni(OH)2基复合材料用于超级电容器领域的难点问题，期望为后续相关研究提供借鉴。

Abstract:: Supercapacitor has the advantages of high power density, long cycle life, fast charging and discharging speed, which has great application potential in the field of energy storage. Electrode materials, as the core materials of supercapacitors, have crucial impacts on the performance of the whole energy storage system. Nickel hydroxide (Ni(OH)2) has the advantages of low cost, abundant reserves, high theoretical capacity, environmental friendliness, and high stability in alkaline electrolytes, which is often used as the electrode material for supercapacitors. However, there are still problems needed to be solved urgently, such as low conductivity, poor dispersion, limited specific surface area, and volume shrinkage during the charging and discharging process of supercapacitors. This paper reviewed the research progress in the past five years of the prepared Ni(OH)2-based composites, such as composites with carbon materials, metal oxides, metal sulphides, metal selenides, and hydroxide materials, and the influence of their micro-nano structures on the electrochemical performance was analyzed and discussed. The current issues and prospects for further study of Ni(OH)2-based composites in supercapacitors were summarized.