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