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- Title
One-step synthesis of CoSe modified ZnSe hybrid as a battery-type cathode material for supercapacitors with improved electrochemical performance.
- Authors
Zhu, Yirong; Yao, Junjun; Yun, Xiaoru; Zhou, Ruyi; Yang, Feifan; Guo, Chenchen; Liu, Xinru; Gao, Zeping
- Abstract
Transition metal selenides (TMSs), as a novel type of battery-type electrode material for high-performance supercapacitors, have gradually attracted growing attention in recent years. Herein, the new three-dimensional interconnected ultrathin CoSe nanosheets decorated ZnSe nanoparticles-assembled microspheres hybrid was prepared through a simple one-pot hydrothermal method and employed as battery-type supercapacitor cathode materials for the first time. Benefiting from the unique intertwined structure with a high surface area, mesopore/macropore-rich hierarchical structure as well as superior electrical conductivity, compared with the pure monometallic ZnSe electrode, the as-prepared CoSe/ZnSe hybrid electrode presents significantly boosted electrochemical performances with a high specific capacity of 92.0 mAh g− 1 at 1 A g− 1, admirable rate property with 46.5% of capacity retention at 50 A g− 1 and superior cycle performance with 88.2% of capacity retention after 5000 cycles at 10 A g− 1. These intriguing data imply that the resultant CoSe/ZnSe hybrid can be seen as a promising cathode material for battery-type supercapacitors.
- Subjects
ZINC selenide; CATHODES; SUPERCAPACITOR electrodes; ELECTRIC conductivity; SUPERCAPACITORS; MICROSPHERES; TRANSITION metals; SURFACE structure
- Publication
Journal of Materials Science: Materials in Electronics, 2022, Vol 33, Issue 26, p21075
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-022-08911-5