Facile hydrothermal synthesized MoV2O8/MoO3 microclusters-based electrode materials for high-capacity asymmetric supercapacitors

被引：5
作者：
Ankinapalli, Obula Reddy [1 ]
Krishna, B. N. Vamsi [1 ]
Yu, Jae Su [1 ]
机构：
[1] Kyung Hee Univ, Inst Wearable Convergence Elect, Dept Elect & Informat Convergence Engn, Yongin 17104, Gyeonggi Do, South Korea
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 948卷
基金：
新加坡国家研究基金会;
关键词：
Transition metal oxides; Electrochemical properties; Asymmetric supercapacitors; GRAPHENE OXIDE; CYCLING PERFORMANCE; CARBON NANOTUBES; MOLYBDENUM OXIDE; THIN-FILMS; COMPOSITE; VANADIUM; NANOSHEETS; STORAGE; GROWTH;
D O I：
10.1016/j.jallcom.2023.169770
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Engineering novel transition metal oxide materials with micro/nanostructures has endowed unusual electrochemical properties. Herein, we reported the MoV2O8/MoO3 microclusters (MVO/MO MCs) synthesized by a simple and facile hydrothermal process. Furthermore, the MVO/MO MC-based electroactive materials were studied at various annealing temperatures of 300, 400, and 500 & DEG;C. The prepared materials wrere characterized via different analysis methods for the investigation of phase, morphology, surface area, and oxidation states. The optimized MVO/MO MC electrode revealed a superior specific capacity of 392.58 mAh g-1 at 1 A g-1 (2844 F g-1) in a 1 M KOH electrolyte solution. The MVO/MO MC electrode also exhibited excellent capacity retention of 101% with a corresponding coulombic efficiency of 99%. Accordingly, the fabricated pouch-like asymmetric supercapacitor (ASC) with the MVO/MO MCs and activated carbon materials delivered maximum power and energy densities of 2306.95 W Kg-1 and 37.06 Wh kg-1, respectively. Additionally, the ASC showed superior capacity retention of 128% with 97% of coulombic efficiency. Also, the ASC devices were employed to test the practical application by powering electronic gadgets. & COPY; 2023 Elsevier B.V. All rights reserved.
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页数：12
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