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J. Korean Ceram. Soc. > Volume 57(2); 2020 > Article
Journal of the Korean Ceramic Society 2020;57(2): 119-134.
doi: https://doi.org/10.1007/s43207-020-00023-2
Recent advances in two‑dimensional inorganic nanosheet‑based supercapacitor electrodes
Seung Mi Oh1, Seong‑Ju Hwang2
1Center for Hybrid Interfacial Chemical Structure (CICS), Department of Chemistry and Nanoscience, College of Natural Sciences, Ewha Womans University, Seoul 03760, Korea
2Center for Hybrid Interfacial Chemical Structure (CICS), Department of Materials Science and Engineering, College of Engineering, Yonsei University, Seoul 03722, Korea
Correspondence  Seong‑Ju Hwang ,Email: hwangsju@yonsei.ac.kr
Received: September 14, 2019; Revised: September 23, 2019   Accepted: February 12, 2020.  Published online: February 29, 2020.
ABSTRACT
Exfoliated two-dimensional (2D) nanosheets of inorganic solids exhibit various unique characteristics such as unusually high morphological and structural anisotropy, great diversity in composition and structure, and tunable physicochemical properties. The large 2D surface area and high electrochemical activity of inorganic nanosheets render them as potential materials for supercapacitor electrodes. The electrode performance of these nanosheets can be further improved by their hybridization with highly conductive and/or electrochemically active species. This review focuses on the application of 2D inorganic nanosheets as supercapacitor electrodes and versatile building blocks for synthesizing novel hybrid electrode materials. The crucial roles of 2D inorganic nanosheets in high-performance electrode materials for supercapacitors are discussed and several intriguing examples of 2D inorganic nanosheet-based electrode materials have also been provided. The perspective for future research in this field is discussed along with various strategies to optimize the electrode performance of 2D inorganic nanosheet-based hybrid materials.
Key words: Capacitors · Nanocomposites · Electrical properties · Inorganic nanosheets · Electrode
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