scholarly journals Evaluation of the electrochemical performance of electrospun transition metal oxide-based electrode nanomaterials for water CDI applications

2019 ◽  
Vol 309 ◽  
pp. 125-139 ◽  
Author(s):  
Saveria Santangelo ◽  
Fabiola Pantò ◽  
Claudia Triolo ◽  
Sara Stelitano ◽  
Patrizia Frontera ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxide ◽  
Electrochemical Performance ◽  
Transition Metal Oxide

A facile route to prepare mixed transition metal oxide yolk–shell microspheres for enhanced lithium storage

2019 ◽  
Vol 48 (28) ◽  
pp. 10604-10609 ◽  
Author(s):  
Yuanxiang Gu ◽  
Yuxue Xuan ◽  
Heng Zhang ◽  
Xiaoyan Deng ◽  
Yanhui Sun ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxide ◽  
Electrochemical Performance ◽  
Transition Metal Oxide ◽  
Lithium Storage ◽  
Co Precipitation ◽  
Mixed Transition ◽  
Facile Route

Yolk–shell ZnCo2O4 microspheres were prepared via a coordination co-precipitation route, which exhibited superior electrochemical performance.

scholarly journals Interior and Exterior Decoration of Transition Metal Oxide Through Cu0/Cu+ Co-Doping Strategy for High-Performance Supercapacitor

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Weifeng Liu ◽  
Zhi Zhang ◽  
Yanan Zhang ◽  
Yifan Zheng ◽  
Nishuang Liu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxide ◽  
Electrochemical Performance ◽  
Electrode Materials ◽  
Theoretical Calculations ◽  
Synergetic Effect ◽  
Transition Metal Oxide ◽  
Practical Applications ◽  
Co Doping ◽  
Co Doped

AbstractAlthough CoO is a promising electrode material for supercapacitors due to its high theoretical capacitance, the practical applications still suffering from inferior electrochemical activity owing to its low electrical conductivity, poor structural stability and inefficient nanostructure. Herein, we report a novel Cu0/Cu+ co-doped CoO composite with adjustable metallic Cu0 and ion Cu+ via a facile strategy. Through interior (Cu+) and exterior (Cu0) decoration of CoO, the electrochemical performance of CoO electrode has been significantly improved due to both the beneficial flower-like nanostructure and the synergetic effect of Cu0/Cu+ co-doping, which results in a significantly enhanced specific capacitance (695 F g−1 at 1 A g−1) and high cyclic stability (93.4% retention over 10,000 cycles) than pristine CoO. Furthermore, this co-doping strategy is also applicable to other transition metal oxide (NiO) with enhanced electrochemical performance. In addition, an asymmetric hybrid supercapacitor was assembled using the Cu0/Cu+ co-doped CoO electrode and active carbon, which delivers a remarkable maximal energy density (35 Wh kg−1), exceptional power density (16 kW kg−1) and ultralong cycle life (91.5% retention over 10,000 cycles). Theoretical calculations further verify that the co-doping of Cu0/Cu+ can tune the electronic structure of CoO and improve the conductivity and electron transport. This study demonstrates a facile and favorable strategy to enhance the electrochemical performance of transition metal oxide electrode materials.

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