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Fabrication of an Advanced Symmetric Supercapattery Based on Nanostructured Bismuth‐Cobalt‐Zinc Ternary Oxide Anchored on Silicon Carbide Hybrid Composite Electrode
Author(s) -
Punde Ninad S.,
Rajpurohit Anuja S.,
Srivastava Ashwini K.
Publication year - 2019
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201900387
Subject(s) - materials science , nanocomposite , cobalt oxide , composite number , chemical engineering , ternary operation , nanoparticle , electrode , nanotechnology , calcination , silicon carbide , cobalt , composite material , metallurgy , catalysis , chemistry , biochemistry , computer science , engineering , programming language
Herein, a novel nanostructure hybrid electrode based on silicon carbide supports a bismuth‐cobalt‐zinc ternary oxide composite (SiC/BiCoZnO) material that is designed for a high‐performance supercapattery device. The hybrid microstructure SiC/BiCoZnO is synthesized by a simple hydrothermal method subsequently followed by a calcination process. The mesoporous BiCoZnO nanoparticles (with specific surface area of 154.5 m 2 g −1 ) are linked on the large surface of SiC structures in a SiC/BiCoZnO nanocomposite. The hybrid electrode possesses a high specific capacity of 841.1 C g −1 at a current density of 1 A g −1 in a mixed electrolyte of 1 m KOH + 1 m Na 2 SO 4 due to synergistic effects of high conduction as well as large SiC structures and redox active metals present in the BiCoZnO nanoparticles. Moreover, the SiC/BiCoZnO nanocomposite displays excellent rate performance in a symmetric supercapattery device, which offers an excellent energy density of 76.25 Wh kg −1 at 1 A g −1 and maximum power output of 19 000 W kg −1 at 20 A g −1 with an outstanding capacity retention of 84.2% after 10 000 charge–discharge cycles. Thus, the hybrid architecture of the SiC/BiCoZnO nanocomposite with superior electrochemical properties can make it highly beneficial for the fabrication of energy and power devices.