Surface activated commercial carbon cloth as superior electrodes for symmetric supercapacitors
Commercial carbon fiber (T300) cloth as the original material is surface-treated by a two-step approach, lastly becoming a high-performance electrode. This kind of electrode has a high specific capacitance (42.2 F g −1 ), which is nearly a hundred times that of the original carbon cloth. After fabricating these electrodes into a symmetric supercapacitor device, it provides a high specific energy of 4.64 W h kg −1 at a specific power of 10 W kg −1 . Furthermore, the device showed long cycling stability (it keeps 92% capacitance retention after 1000 cycles), good rate capability, and low internal resistance. This work is expected to provide guidance for the research of structural supercapacitors based on commercial carbon cloth.
Optimizing electronic structures and incorporating additional active sites in metal oxides can significantly enhance the performance of the oxygen evolution reaction (OER), which is a pivotal…
First-principles calculations were performed to analyze the effects of oxygen vacancies (Vo) and the combined effect of Vo and copper doping on layered perovskites ACr2O7 (A = Be, Mg, Ca…
Accurate thermal modeling is essential for predicting the behavior and ensuring the safety of lithium-ion battery cells and modules. In this study, a comprehensive electrothermal model is…