ZnCo2O4/CNT composite for efficient supercapacitor electrodes

All-redox hybrid supercapacitors based on carbon modified stacked zinc cobaltite nanosheets

“…The performance of ZnCo 2 O 4 can be improved by compositing it with highly conductive materials such as carbonaceous materials or conducting polymers. [27][28][29] The addition of various carbon-based materials such as CNTs, 30 rGO, [31][32][33][34][35] CNFs, 36 and carbon nano-spheres 37 has already been explored to enhance the performance of ZnCo 2 O 4 . The results suggest that the carbon-based materials can boost the performance of the electrode material to a great extent.…”

MnO2-based materials for supercapacitor electrodes: challenges, strategies and prospects

“…Compared to the low electrical conductivity of oxides, spinel-based cobaltite has a variety of oxidation states and a higher electrical conductivity, which allows it to store more charge and thus achieve higher capacitive properties. These include FeCo 2 O 4 , [27][28][29] ZnCo 2 O 4 , [30][31][32] CuCo 2 O 4 , [33][34][35] MnCo 2 O 4 , [36][37][38] etc. MnO 2 has received great attention, because of its low price, low toxicity, high theoretical capacity (1370 F g −1 ) and good environmental compatibility, etc.…”

Tunable Fabrication of Hollow Nano Sword-Like CuCo2O4 Derived from Bimetal–Organic Frameworks as Binder-Free Electrodes

“…To overcome this challenge, scientists worldwide are making tremendous attempts to design novel and desirable electrode materials that can meet a massive energy density. The development of novel battery-type electrodes with excellent structural properties has been an efficient strategy to boost the energy density of SCs with no sacrifice of power density. − Moreover, it has been proved that the intrinsic and geometrical properties of electrode materials are the key aspects which affect the electrochemical performances of SCs. − It is believed that binary transition metal oxides such as NiCo 2 O 4 , FeCo 2 O 4 , CuCo 2 O 4 , and ZnCo 2 O 4 are the promising battery-type electrodes for SCs because of their environmental stabilities and the synergetic effects of different active metal ions providing high electrochemical performances. − Among different types of binary metal oxides, spinel copper cobaltite (CuCo 2 O 4 ) has gained more attention thanks to its inherent advantages such as the environmental friendliness of the copper element, low cost, and multiple oxidation states which result in high theoretical capacity, higher electrochemical activity, and better electrical conductivity compared to other binary metal oxides and single counterparts such as CuO and Co 3 O 4 . So far, various synthetic routes such as hydrothermal, microwave, chemical precipitation sol–gel, and so on have been developed to synthesize pure CuCo 2 O 4 or its composite with different morphologies for SCs.…”

“…2−6 Moreover, it has been proved that the intrinsic and geometrical properties of electrode materials are the key aspects which affect the electrochemical performances of SCs. 7−12 It is believed that binary transition metal oxides such as NiCo 2 O 4 , 13 FeCo 2 O 4 , 14 CuCo 2 O 4 , 15 and ZnCo 2 O 4 16 are the promising battery-type electrodes for SCs because of their environmental stabilities and the synergetic effects of different active metal ions providing high electrochemical performances. 17−23 Among different types of binary metal oxides, spinel copper cobaltite (CuCo 2 O 4 ) has gained more attention thanks to its inherent advantages such as the environmental friendliness of the copper element, low cost, and multiple oxidation states which result in high theoretical capacity, higher electrochemical activity, and better electrical conductivity compared to other binary metal oxides and single counterparts such as CuO and Co 3 O 4 .…”