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Self-Assembled Bi2MoO6 Nanopetal Array on Carbon Spheres toward Enhanced Supercapacitor Performance

Self-Assembled Bi2MoO6 Nanopetal Array on Carbon Spheres toward Enhanced Supercapacitor Performance
Samdani, Kunda JitendraPark, Jeong HwaJoh, Dong WooLee, Kang-Taek
DGIST Authors
Lee, Kang-Taek
Issue Date
ACS Sustainable Chemistry and Engineering, 6(12), 16702-16712
Article Type
Article; Proceedings Paper
The rational design and exploration of the metal oxide-carbon composite are greatly desired for enhanced supercapacitor application. Herein, we develop a novel Bi2MoO6 and carbon sphere hybrid material as a supercapacitor electrode via a simple solvothermal process. The microstructural analysis of the carbon sphere@Bi2MoO6 reveals that the 10 nm thick Bi2MoO6 nanopetals are consistently anchored on the carbon spheres surface, forming a 3-dimensional nanoarchitecture. The carbon sphere@Bi2MoO6 electrode displays an excellent specific capacitance of 521.42 F g-1 at 1 A g-1, which is one of the best values of any reported Bi2MoO6-based electrodes to date. Moreover, this hybrid electrode can accumulate total charge as high as 2083 C g-1, which is consistent with high capacitance. The all-solid-state symmetric supercapacitor device exhibited the specific capacitance of 26.69 F g-1, along with ∼80% of capacitance retention after 10000 cycles. The superior supercapacitor performance of the carbon sphere@Bi2MoO6 electrode is primarily due to the hierarchical nanoarchitecture of Bi2MoO6, its promotion of redox reactions, and the presence of highly conductive carbon spheres at cores, which provides pathways for rapid electron transfer. These results highlight feasibility of the carbon sphere@Bi2MoO6 hybrid material as a highly propitious electrode for supercapacitor applications. © 2018 American Chemical Society.
American Chemical Society
Related Researcher
  • Author Lee, Kang Taek AECSL(Advanced Energy Conversion and Storage Lab)
  • Research Interests Advanced energy conversion and storage systems; Solid-state Electrochemical Energy Devices; All solid-state batteries; low-temperature solid oxide fuel cells(SOFCs); 신 에너지 변환 및 저장 시스템; Solid-state Electrochemical Energy Devices; 차세대 전고체 이차전지(solid-state batteries) 및 저온화 고체산화물 연료전지(LT-SOFCs)
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Department of Energy Science and EngineeringAECSL(Advanced Energy Conversion and Storage Lab)1. Journal Articles

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