TY  - JOUR
A1  - Liu, Yanchen
A1  - de Oliveira Guilherme Buzanich, Ana
A1  - Montoro, Luciano A.
A1  - Liu, Hao
A1  - Liu, Ye
A1  - Emmerling, Franziska
A1  - Russo, Patrícia A.
A1  - Pinna, Nicola
T1  - A partially disordered crystallographic shear block structure as fast-charging negative electrode material for lithium-ion batteries
JF  - Nature Communications
N2  - A well-ordered crystalline structure is crucial in battery electrodes, as the dimensionality and connectivity of the interstitial sites inherently influence Li+ ions diffusion kinetics. Niobium tungsten oxides block structures, composed of ReO3-type blocks of specific sizes with well-defined metal sites, are promising fast-charging negative electrode materials. Structural disorder is generally detrimental to conductivity or ion transport. However, here, we report an anomalous partially disordered Nb12WO33 structure that significantly enhances Li-ion storage performance compared to the known monoclinic Nb12WO33 phase. The partially disordered phase consists of corner-shared NbO6 octahedra blocks of varied sizes, including 5×4, 4×4, and 4×3, with a disordered arrangement of distorted WO4 tetrahedra at the corners of the blocks. This structural arrangement is robust during lithiation/delithiation, exhibiting minor local structure changes during cycling. It enables accelerated Li-ion migration, resulting in promising fast-charging performance, namely, 62.5 % and 44.7 % capacity retention at 20 C and 80 C, respectively. This study highlights the benefits of introducing disorder into niobium tungsten oxide shear structures, through the establishment of clear structure-performance correlations, offering guidelines for designing materials with targeted properties.
KW  - Lithium ion batteries
KW  - Oxides
KW  - XANES
KW  - XRD
PY  - 2025
UR  - https://nbn-resolving.org/urn:nbn:de:kobv:b43-637994
DO  - https://doi.org/10.1038/s41467-025-61646-9
SN  - 2041-1723
VL  - 16
IS  - 1
SP  - 1
EP  - 15
PB  - Springer Science and Business Media LLC
AN  - OPUS4-63799
LA  - eng
AD  - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER  -