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