The article "High-rate electrochemical energy storage through Li+ intercalation pseudocapacitance" by Veronica Augustyn et al. explores the use of orthorhombic Nb₂O₅ (T-Nb₂O₅) as a pseudocapacitive material for high-rate energy storage. The authors demonstrate that T-Nb₂O₅ exhibits pseudocapacitive behavior due to the intercalation of lithium ions, which occurs in the bulk material rather than at the surface. This mechanism allows for rapid charge storage with high rates, as evidenced by the linear relationship between current and sweep rate, and the independence of charge storage capacity from the charging time. The structural characteristics of T-Nb₂O₅, including its layered structure and two-dimensional transport pathways, are crucial for this pseudocapacitive behavior. The study also shows that thick electrodes (up to 40 μm) of T-Nb₂O₅ can achieve high-rate charge storage, making it a promising material for high-rate charge-storage devices. The findings highlight the potential of intercalation pseudocapacitance for applications in high-power energy storage systems.The article "High-rate electrochemical energy storage through Li+ intercalation pseudocapacitance" by Veronica Augustyn et al. explores the use of orthorhombic Nb₂O₅ (T-Nb₂O₅) as a pseudocapacitive material for high-rate energy storage. The authors demonstrate that T-Nb₂O₅ exhibits pseudocapacitive behavior due to the intercalation of lithium ions, which occurs in the bulk material rather than at the surface. This mechanism allows for rapid charge storage with high rates, as evidenced by the linear relationship between current and sweep rate, and the independence of charge storage capacity from the charging time. The structural characteristics of T-Nb₂O₅, including its layered structure and two-dimensional transport pathways, are crucial for this pseudocapacitive behavior. The study also shows that thick electrodes (up to 40 μm) of T-Nb₂O₅ can achieve high-rate charge storage, making it a promising material for high-rate charge-storage devices. The findings highlight the potential of intercalation pseudocapacitance for applications in high-power energy storage systems.