Journal
CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES
Volume 47, Issue 3, Pages 357-388Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10408436.2021.1886048
Keywords
Electrochemical double layer; energy storage; heterojunctions; layered materials; specific capacitance
Funding
- CONACYT SENER Sustentabilidad Energetica - Laboratorio Nacional de Materias Primas, Metalurgia y Aleaciones Estrategicas basadas en Tierras Raras orientadas a fortalecer la Sustentabilidad de los Sectores Energia, Transporte y Comunicaciones [232611]
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This review examines the potential of layered materials in supercapacitors, discussing their properties and stability in various electrolytes, as well as the impact of heterojunctions/composites on performance. It also explains the dependence of capacitive behavior on electrode morphology, crystal structure, and electrolyte type. The future perspective on the design and commercial applications of these materials is also presented.
Supercapacitors have recently emerged as a potential technology with superior charge storage capacity and power density. Layered materials, by the virtue of their morphology and high surface area, are deemed to be potential candidates for storing charge or energy. In this review, the supercapacitive properties and electrochemical stability of different layered materials (MnO2, graphene, g-C3N4, MoS2, and MXenes) in a wide range of electrolytes is discussed. Moreover, an overview of the heterojunctions or composites of these 2D materials is included, emphasizing their synergistic effect towards improved supercapacitive performance and cyclic stability. Most importantly, the capacitive behavior dependence on the working electrode morphology, crystal structure, and type of electrolyte is explained. A future perspective on the design and use of these layered materials and their heterojunctions for commercial applications is presented.
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