Combustion synthesis of battery-type positive electrodes for robust aqueous hybrid supercapacitor

Zn–Ni–Se@NiCo2S4 Core–Shell Architectures: A Highly Efficient Positive Electrode for Hybrid Supercapacitors

“…16,17 In the hybrid cell, the battery-type electrode is usually comprised of transition-metal-based electrode materials, which can generate reasonable energy density and stores charge via faradic redox reactions. 18,19 On the other hand, the capacitortype electrode composed of carbon materials [e.g., activated carbon (AC)] can provide satisfactory power density and stores charge through the electrochemical double-layer mechanism. 20,21 Even recently, preparing and designing promising electroactive materials for supercapacitor applications have been a distinguished task.…”

“…Designing dependable energy storage devices (ESDs) with both impressive power and energy densities is extremely important, owing to the severe contamination of the environment, rising demand for modern electronic devices, and increased energy consumption. , Therefore, the engineering of high-efficiency ESDs, such as supercapacitors and batteries, has created great attention to addressing energy crisis problems. Generally, the batteries are known as promising EDSs with desirable energy density. , On the other side, the supercapacitors have been marked by a fast charge/discharge rate to obtain excellent power density but relatively lower energy density, which restricts their practical and industrial utilizations. − To deal with this energy density problem, the design of hybrid supercapacitors with the dual benefits of the capacitive- and battery-type electrodes allows us to combine capacitive and faradic mechanisms in a unique device. , In the hybrid cell, the battery-type electrode is usually comprised of transition-metal-based electrode materials, which can generate reasonable energy density and stores charge via faradic redox reactions. , On the other hand, the capacitor-type electrode composed of carbon materials [e.g., activated carbon (AC)] can provide satisfactory power density and stores charge through the electrochemical double-layer mechanism. , Even recently, preparing and designing promising electroactive materials for supercapacitor applications have been a distinguished task. Accordingly, the rational and effective preparation of battery-type materials as a positive electrode has become a significant assignment to establish the high-performance hybrid supercapacitors.…”

Modified Activation Process for Supercapacitor Electrode Materials from African Maize Cob

“…The characterization of the materials as electrodes for supercapacitor application was evaluated by cyclic voltammetry (CV) and galvanostatic charge discharge (CD) curves. By using three electrodes system the electrodes of the supercapacitor, the calculation was done based on the following equations [3,[65][66][67];…”