Power performance Plasma Electrochemical electrodes Electrical conductivity Electrochemical capacitors FeWO 4 Current collector Vanadium nitride Supercapacitor Nuclear magnetic resonance spectroscopy Electrolytes Electrochemical impedance spectroscopy Capacitance Ionic conductivity Nickel oxide Electrochemical capacitor GGA+U Lithium ion batteries Microstructure Lithium batteries Cyclic voltammetry Crystal structure Titanium nitride Raman spectroscopy Organic electrode materials Electrolyte Thin films Micro-supercapacitor Supercapacitors Positive electrode Interface Graphite NMR Electrode Failure mechanism Redox-active amine LiFePO4 Perovskite Manganese dioxide XPS Microdevice Ionogels Organic battery Degradation Lithium-ion battery Cycle performance Lithium ion battery Negative electrode Cycling stability Binder Li-ion batteries Electrode material Magnetron sputtering Lithium-ion batteries Organic batteries Chemical vapor deposition Fuel cell CVD DFT calculations Ionic liquid electrolytes EIS Batteries Activated carbon Microbatteries Diazonium chemistry MnO2 Micro-supercapacitors Exsolution Ionic liquid MAS NMR Grafting Sputtering Electrodes Fermi contact DFT Operando Impedance spectroscopy Coating Diazonium salts Pseudocapacitance SOEC Aqueous electrolyte Photovoltaics Anodes Electrochemical performance Anode Silicon Fe Li-ion battery Lithium battery Diazonium SOFC Intercalation FIB/SEM Porous silicon Energy storage CO2 electrolysis Transition metals Electrochemistry Graphene