Niobium Tungsten Oxides as Anodes for High-Power and Low-Temperature Li-Ion Batteries
Vincenzo J. Musicó·Veronica Augustyn·Noah P. Holzapfel·R. Blake Nuwayhid·Jeffrey W. Long·Ryan H. DeBlock
Space-limited and low-temperature environments demand battery materials with both high volumetric capacity and fast charge-storage kinetics. To address this need, we investigate the electrochemical Li+-insertion behavior of high-density niobium–tungsten oxide (NWO) Wadsley–Roth phases at room temperature (25 °C) and 0 °C. These phases contain orthogonal crystallographic shear planes that form an m × n block structure around a corner-sharing network. We compare three NWO materials: Nb12WO33 (3 ×