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Synthesis of Three-Dimensional Hierarchical Urchinlike Tungsten Trioxide Microspheres for High-Performance Supercapacitor Electrode

1
State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130118, China
2
Jilin Provincial Key Laboratory of Architectural Electricity and Comprehensive Energy Saving, Changchun 130118, China
*
Author to whom correspondence should be addressed.
Crystals 2019, 9(9), 485; https://doi.org/10.3390/cryst9090485
Received: 23 August 2019 / Revised: 16 September 2019 / Accepted: 17 September 2019 / Published: 19 September 2019
(This article belongs to the Special Issue Structural and Optical Properties of Nanostructured Metal Oxides )
In this work, hierarchical three-dimensional (3D) urchinlike WO3 microspheres with a self-assembled nanorod core, and a connected and quasiconnected nanothorn network shell were synthesized with the hydrothermal method. For the surface or near-surface regions of pseudocapacitive materials that are involved in the Faradaic reaction, the urchinlike WO3 special microstructure provided more effective charge-storage area, exhibiting a high specific capacitance of 488.78 F g−1, low average equivalent-series resistance of 0.966 Ω cm−2, and excellent cycling stability (84.75% of its initial value after the 10,000 cycles). This performance indicates the urchinlike WO3 microspheres are promising electrode materials for high-performance supercapacitors. View Full-Text
Keywords: tungsten trioxide; three-dimensional; energy storage and conversion; supercapacitor tungsten trioxide; three-dimensional; energy storage and conversion; supercapacitor
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MDPI and ACS Style

He, X.; Wan, J.; He, D.; Yang, X.; Suo, H.; Zhao, C. Synthesis of Three-Dimensional Hierarchical Urchinlike Tungsten Trioxide Microspheres for High-Performance Supercapacitor Electrode. Crystals 2019, 9, 485.

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