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