Stabilizing the T‐Nb <sub>2</sub> O <sub>5</sub> Structure by Polyanion Anchoring

ABSTRACT Although the T‐Nb 2 O 5 provides spacious pathways for Li‐ion diffusion, it is prone to structural instability, arising from anisotropic stress accumulation and interlayer glide. Herein, we demonstrate that anchoring planar BO 3 3− polyanion groups into the T‐Nb 2 O 5 interlayer serves as an effective structural stabilizer. This strategy alleviates anisotropic stress during (de)lithiation, thereby inhibiting interlayer glide and significantly suppressing the rapid capacity decay typically observed in early cycles. Nb 1.94 (BO 3 ) 0.1 O 4.7 (T‐NBO‐BO 3 ) delivers the high‐rate capacity (309.4 mAh g −1 at 0.05 A g −1 , 117.8 mAh g −1 at 5 A g −1 ) and cycling stability (negligible capacity loss during the initial 160 cycles and low capacity loss of 0.007% every cycle at 1 A g −1 ) at 25°C. Notably, it also exhibits outstanding electrochemical performance at −20°C (94.4 mAh g −1 at 2 A g −1 , low capacity loss of 0.018% per cycle at 1 A g −1 ).

Authors

Institutions

Publication Details

Journal
Advanced Functional Materials
Published
2026-07-27
DOI
https://doi.org/10.1002/adfm.77162
Primary Topic
Advancements in Battery Materials
Type
article
Field-Weighted Citation Impact
0.00

Funders

Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

Stabilizing the T‐Nb 2 O 5 Structure by Polyanion Anchoring

Zihan Su, Zhuang‐Chun Jian, Jun Luo, Anyang Yu et al.
Advanced Functional Materials
Advancements in Battery Materials
article

Stabilizing the T‐Nb 2 O 5 Structure by Polyanion Anchoring

Zihan Su, Zhuang‐Chun Jian, Jun Luo, Anyang Yu, Qi Fan, Tianshuo Zhao, Qingyu Xu, Yu Zhang, Mingxing Yuan, Xiaodie Zhao, Yi Shen, Moran Li, Minghui Dong, Yueming Sun, Bingui Li, Yu Qin
article en

Abstract

ABSTRACT Although the T‐Nb 2 O 5 provides spacious pathways for Li‐ion diffusion, it is prone to structural instability, arising from anisotropic stress accumulation and interlayer glide. Herein, we demonstrate that anchoring planar BO 3 3− polyanion groups into the T‐Nb 2 O 5 interlayer serves as an effective structural stabilizer. This strategy alleviates anisotropic stress during (de)lithiation, thereby inhibiting interlayer glide and significantly suppressing the rapid capacity decay typically observed in early cycles. Nb 1.94 (BO 3 ) 0.1 O 4.7 (T‐NBO‐BO 3 ) delivers the high‐rate capacity (309.4 mAh g −1 at 0.05 A g −1 , 117.8 mAh g −1 at 5 A g −1 ) and cycling stability (negligible capacity loss during the initial 160 cycles and low capacity loss of 0.007% every cycle at 1 A g −1 ) at 25°C. Notably, it also exhibits outstanding electrochemical performance at −20°C (94.4 mAh g −1 at 2 A g −1 , low capacity loss of 0.018% per cycle at 1 A g −1 ).

Advanced Functional Materials
Shanghai Jiao Tong University (CN), Southeast University (BD), Baogang Group (China) (CN), Collaborative Innovation Center of Advanced Microstructures (CN), Ministry of Education (BD), ZTT (China) (CN), Southeast University (CN)
National Natural Science Foundation of China, Fundamental Research Funds for the Central Universities
Affordable and clean energy
Openalex Percentile: Top 16%
Advancements in Battery Materials
DOISourceOpenAlex
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.