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