Electrochemical Energy Storage with Tungsten Oxide-Based Materials
Summary
Electrochemical energy storage technologies employing tungsten oxide (WO₃) and its derivatives have garnered significant attention due to their intrinsic pseudocapacitive behaviour, tunable crystal phases and earth-abundant composition. The capacity for rapid surface redox reactions and reversible ion intercalation makes WO₃ materials suitable for both supercapacitors and hybrid battery systems. Key strategies include morphological engineering of nanorods, nanoplates and porous frameworks; creation of oxygen vacancies to boost electronic conductivity; and assembly of composites with carbon supports, conducting polymers or secondary oxides to enhance stability. Advances in aqueous and hybrid electrolytes have improved safety, cycle life and energy density. Coupling tailored synthesis with electrode–electrolyte optimisation has yielded devices capable of powering consumer electronics, stabilising power grids and supporting sustainable transport. Current research seeks to balance high capacitance, rapid charge–discharge rates and long-term durability, addressing global demands for efficient, low-cost and environmentally benign energy storage.
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Electrochemical Energy Storage with Tungsten Oxide-Based Materials publication trend
The graph below shows the total number of articles in electrochemical energy storage with tungsten oxide-based materials across all publications each year (not limited to Nature Index journals).
Technical terms
Pseudocapacitance: Reversible charge storage via fast surface or near-surface redox reactions in transition metal oxides.
Oxygen vacancy: A lattice defect where an oxygen atom is missing, enhancing electronic conductivity and increasing active sites.
Specific capacitance: Charge stored per unit mass of electrode material, expressed in farads per gram (F g⁻¹).
Energy density: Energy stored per unit mass, measured in watt-hours per kilogram (Wh kg⁻¹), indicating device runtime.
Power density: Rate of energy delivery per unit mass, expressed in watts per kilogram (W kg⁻¹), reflecting discharge speed.
References
- Integrated Electrode‐Electrolyte Optimization to Manufacture a Real‐Life Applicable Aqueous Supercapacitor with Record‐Breaking Lifespan. Energy & Environmental Materials (2023).
- Facile preparation of a highly efficient coin cell supercapacitor based on WO3 nanorods. Sustainable Materials and Technologies (2024).
- Advances in WO3-Based Supercapacitors: State-of-the-Art Research and Future Perspectives. Nanomaterials (2023).
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