@article{Zhang2026, 
author = {Minghao Zhang and Yiting Miao and Lintao Chen and Simin You and Yujiao Liu and Jiarui Wang and Chenyu Liu and Zhan Lin},
title = {Tungsten Doping and Synergistic Modification for Stabilizing the Interface between Ni-rich Cathodes and Sulfide Electrolytes},
year = {2026},
journal = {Journal of Guangdong University of Technology},
volume = {43},
number = {1},
pages = {105-113},
keywords = {surface segregation, all-solid-states lithium-ion battery, nickel-rich layer oxide cathode material, bulk phase doping},
url = {https://www.sciopen.com/article/10.12052/gdutxb.250118},
doi = {10.12052/gdutxb.250118},
abstract = {Nickel-rich layered oxides (NRLOs) are regarded as ideal cathode materials for high-energy-density all-solid-state lithium-ion batteries (ASSLIBs). However, their practical application is hindered by structural instability and interfacial reactions with sulfide solid-state electrolytes, which lead to rapid performance degradation. To address these challenges, a synergistic stabilization strategy has been developed, simultaneously reinforcing the bulk lattice of NRLOs and suppressing surface side reactions. In this approach, high-valence W6+ ions were incorporated into the lattice of LiNi0.94Co0.05Mn0.01O2 to enhance bulk-phase stability (W-NCM94), while excess W6+ ions segregated on the NCM94 surface, forming a protective LixWyOz passivation layer that effectively inhibits interfacial reactions. ASSLIBs fabricated with W-NCM94 cathodes exhibit superior electrochemical performance, delivering an initial capacity of 145.7 mAh·g−1 at 0.2 C with outstanding cycling stability (>80% capacity retention after 230 cycles). Notably, at an elevated cut-off voltage of 4.5 V, the cells achieve an impressive initial capacity of 167.6 mAh·g−1. This innovative strategy combining bulk doping with surface segregation provides new insights for designing stable, high-performance NRLOs-based ASSLIBs, paving the way for their practical implementation in next-generation energy storage systems.}
}