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High-performance flexible asymmetric supercapacitor based on hierarchical MnO2/PPy nanocomposites covered MnOOH nanowire arrays cathode and 3D network-like Fe2O3/PPy hybrid nanosheets anode.
Zhao, Peng; Liu, Qiancheng; Yang, Xulin; Zhu, Jie; Yang, Sudong; Chen, Lin; Zhang, Qian.
Afiliación
  • Zhao P; Institute for Advanced Study, Chengdu University, Chengdu, Sichuan 610106, PR China. Electronic address: zhaopeng@cdu.edu.cn.
  • Liu Q; Institute for Advanced Study, Chengdu University, Chengdu, Sichuan 610106, PR China.
  • Yang X; School of Mechanical Engineering, Chengdu University, Chengdu, Sichuan 610106, PR China; Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan 430056, PR China.
  • Zhu J; College of Food and Biological Engineering, Chengdu University, Chengdu 610106, PR China.
  • Yang S; College of Food and Biological Engineering, Chengdu University, Chengdu 610106, PR China.
  • Chen L; College of Food and Biological Engineering, Chengdu University, Chengdu 610106, PR China.
  • Zhang Q; Institute for Advanced Study, Chengdu University, Chengdu, Sichuan 610106, PR China. Electronic address: zhangqian@cdu.edu.cn.
J Colloid Interface Sci ; 662: 322-332, 2024 May 15.
Article en En | MEDLINE | ID: mdl-38354559
ABSTRACT
The configuration of asymmetric supercapacitors (ASCs) has proven to be an effective approach to increase the energy storage properties due to the expanded working voltage resulting from the well-separated potential windows of the cathode and anode. However, carbonaceous anode materials generally suffer from relatively low capacitance, which restricts the enhancement of the energy storage performance of the full device in a traditional asymmetrical design. Herein, a rational design of all-pseudocapacitive ASCs (APASCs) using pseudocapacitive materials with a novel hierarchical nanostructure on both electrodes was developed to optimize the electrochemical properties for high-performance ASC devices. The assembled APASC employed the MnO2/PPy nanocomposites covered MnOOH nanowire arrays with core-shell hierarchical architecture as the cathode and Fe2O3/PPy hybrid nanosheets with 3D porous network-like structure as the anode. Owing to the coordinated pseudocapacitive properties and unique hierarchical nanostructures, this assembled APASC exhibited an exceptional volumetric capacitance of 4.92F cm-3 in a stable voltage window of 2 V, a maximum volumetric energy density of 2.66 mWh cm-3 at 19.72 mW cm-3, and excellent cyclic stability over 10,000 cycles (90.6 % capacitance retention), as well as remarkable flexibility and mechanical stability, providing insights for the design of flexible energy storage systems with enhanced performance.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Colloid Interface Sci Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Colloid Interface Sci Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos