Application of Copper-Sulfur Compound Electrode Materials in Supercapacitors

• Published in: Molecules (Basel, Switzerland) Vol. 29; no. 5; p. 977
• Main Authors: Lu, Junhua, Jiang, Hedong, Guo, Pingchun, Li, Jiake, Zhu, Hua, Fan, Xueyun, Huang, Liqun, Sun, Jian, Wang, Yanxiang
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 23.02.2024; MDPI
• Subjects: Capacitors; Copper; Copper industry; copper–sulfur compounds; Crystal structure; Efficiency; Electric properties; Electrical conductivity; electrochemical properties; Electrodes; Electrolytes; Energy conservation; Energy storage; Graphene; Lithium; Metal oxides; Morphology; Phase transitions; Review; Solid oxide fuel cells; specific capacitance; stability; Sulfur; Sulfur compounds; supercapacitors; Transition metal compounds; copper–sulfur compounds; specific capacitance; supercapacitors; stability; electrochemical properties
• ISSN: 1420-3049; 1420-3049
• DOI: 10.3390/molecules29050977

Supercapacitors (SCs) are a novel type of energy storage device that exhibit features such as a short charging time, a long service life, excellent temperature characteristics, energy saving, and environmental protection. The capacitance of SCs depends on the electrode materials. Currently, carbon-based materials, transition metal oxides/hydroxides, and conductive polymers are widely used as electrode materials. However, the low specific capacitance of carbon-based materials, high cost of transition metal oxides/hydroxides, and poor cycling performance of conductive polymers as electrodes limit their applications. Copper-sulfur compounds used as electrode materials exhibit excellent electrical conductivity, a wide voltage range, high specific capacitance, diverse structures, and abundant copper reserves, and have been widely studied in catalysis, sensors, supercapacitors, solar cells, and other fields. This review summarizes the application of copper-sulfur compounds in SCs, details the research directions and development strategies of copper-sulfur compounds in SCs, and analyses and summarizes the research hotspots and outlook, so as to provide a reference and guidance for the use of copper-sulfur compounds.