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Facile Synthesis of High-Entropy (Mg0.2Co0.2Ni0.2Cu0.2Zn0.2)O Nanopowder and Its Electrochemical Properties As Supercapacitor Electrode
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Pengchao JI, Jingxin YANG, Lin TAN, Fu SUN, Xinghua SU
Journal of the Chinese Ceramic Society | 2023, 51(1) : 124 - 132
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Journal of the Chinese Ceramic Society | 2023, 51(1): 124-132
• Research Articles •
Facile Synthesis of High-Entropy (Mg0.2Co0.2Ni0.2Cu0.2Zn0.2)O Nanopowder and Its Electrochemical Properties As Supercapacitor Electrode
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Pengchao JI, Jingxin YANG, Lin TAN, Fu SUN, Xinghua SU
Affiliations
  • School of Materials Science and Engineering, Chang'an University, Xi'an 710061, China

    • JI Pengchao (1999-), male, Master candidate. E-mail:

About Author:

JI Pengchao (1999-), male, Master candidate. E-mail:

Published: 2023-01-20 doi: 10.14062/j.issn.0454-5648.20220658
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High-entropy oxides (HEO) are a novel material with the unique electrochemical properties, which are stabilized due to the high configurational entropy. In this paper, a high-entropy (Mg0.2Co0.2Ni0.2Cu0.2Zn0.2)O nanopowder with the sizes of 40-65 nm and a rocksalt structure was synthesized by a polyacrylamide gel method and subsequent calcination at 900 ℃ for 2 h in the presence of a mole ratio of acrylamide/metal cations of 120∶1. The results show that the temperature of forming a single-phase (Mg0.2Co0.2Ni0.2Cu0.2Zn0.2)O nanopowder decreases with the increase of the mole ratio of acrylamide/metal cations. The HEO nanopowder has a specific capacitance of 402 F/g at a current density of 1 A/g. A rate capability of 62% appears at 20 A/g. The capacitance retention is 61% after 2 000 cycles at a current density of 5 A/g. It is indicted that (Mg0.2Co0.2Ni0.2Cu0.2Zn0.2)O nanopowder could be used as a prospective electrode material for supercapacitors.

high-entropy oxides  /  acrylamide  /  supercapacitors  /  electrochemical properties  /  electrode materials
纪彭超, 杨静歆, 谭琳, 孙福, 苏兴华. 高熵(Mg0.2Co0.2Ni0.2Cu0.2Zn0.2)O纳米粉体的简易制备及超电容性能. 硅酸盐学报, 2023 , 51 (1) : 124 -132 . DOI: 10.14062/j.issn.0454-5648.20220658
Pengchao JI, Jingxin YANG, Lin TAN, Fu SUN, Xinghua SU. Facile Synthesis of High-Entropy (Mg0.2Co0.2Ni0.2Cu0.2Zn0.2)O Nanopowder and Its Electrochemical Properties As Supercapacitor Electrode[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (1) : 124 -132 . DOI: 10.14062/j.issn.0454-5648.20220658
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Year 2023 volume 51 Issue 1
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Article Info
doi: 10.14062/j.issn.0454-5648.20220658
  • Receive Date：2022-08-13
  • Online Date：2026-10-20
  • Published：2023-01-20
Article Data
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History
  • Received：2022-08-13
  • Revised：2022-08-30
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Affiliations
    School of Materials Science and Engineering, Chang'an University, Xi'an 710061, China

Corresponding:

SU Xinghua (1981-), male, Ph.D., Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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