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