An effective strategy of constructing multi-metallic oxides of ZnO/CoNiO<sub>2</sub>/CoO/C microflowers for improved supercapacitive performance

Wei Guo; Yan Zhang; Xiaxin Lei; Shuang Wang

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An effective strategy of constructing multi-metallic oxides of ZnO/CoNiO₂/CoO/C microflowers for improved supercapacitive performance

Updated：2026-01-06

- An effective strategy of constructing multi-metallic oxides of ZnO/CoNiO₂/CoO/C microflowers for improved supercapacitive performance
- Chinese Journal of Chemical Engineering Vol. 67, Issue 3, Pages: 1-8(2024)
- Affiliations：
  
  1. College of Physics, Taiyuan University of Technology,Jinzhong,China,030600
  2. College of Environmental Science and Engineering, Taiyuan University of Technology,Jinzhong,China,030600
  3. Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan University of Technology,Taiyuan,China,030024
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2024
- Accepted：
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/CoO/C microflowers for improved supercapacitive performance[J]. 中国化学工程学报, 2024, 67(3): 1-8.
DOI：

/CoO/C microflowers for improved supercapacitive performance[J]. 中国化学工程学报, 2024, 67(3): 1-8. DOI：

摘要

Abstract

In this work

a new ZnO/CoNiO

/CoO/C metal oxides composite is prepared by cost-effective hydrothermal method coupled with annealing process under N

atmosphere. Notably

the oxidation-defect annealing environment is conducive to both morphology and component of the composite

which flower-like ZnO/CoNiO

/CoO/C is obtained. Benefited from good chemical stability of ZnO

high energy capacity of CoNiO

and CoO and good conductivity of C

the as-prepared sample shows promising electrochemical behavior

including the specific capacity of 1435 C·g

-1

at 1 A·g

-1

capacity retention of 87.3% at 20 A·g

-1

and cycling stability of 90.5% for 3000 cycles at 5 A·g

-1

respectively. Furthermore

the prepared ZnO/CoNiO

/CoO/C/NF//AC aqueous hybrid supercapacitors device delivers the best specific energy of 55.9 W·h·kg

-1

at 850 W·kg

-1

. The results reflect that the as-prepared ZnO/CoNiO

/CoO/C microflowers are considered as high performance electrode materials for supercapacitor

and the strategy mentioned in this paper is benefit to prepare mixed metal oxides composite for energy conversion and storage.

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⁰

An effective strategy of constructing multi-metallic oxides of ZnO/CoNiO2/CoO/C microflowers for improved supercapacitive performance

DOI：

摘要

Abstract

关键词

Keywords

references

An effective strategy of constructing multi-metallic oxides of ZnO/CoNiO₂/CoO/C microflowers for improved supercapacitive performance