Research output: Contribution to journal › Article › peer-review
Synergistic Nb Doping and Carbon Coating for Stabilized Ultrahigh-Ni-Layered Cathodes in Durable Lithium-Ion Batteries. / Su, Tai; Li, Yang; Zhang, Zaohong; Li, Yanjie; Tang, Shuangchao; Zhang, Kai; Shi, Zhicong; Wang, Bo; Liu, Zhongzhu; Bahnemann, Detlef W.; Zhan, Feng; Pan, Jia Hong.
In: Energy Fuels, Vol. 39, No. 26, 03.07.2025, p. 12745-12755.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Synergistic Nb Doping and Carbon Coating for Stabilized Ultrahigh-Ni-Layered Cathodes in Durable Lithium-Ion Batteries
AU - Su, Tai
AU - Li, Yang
AU - Zhang, Zaohong
AU - Li, Yanjie
AU - Tang, Shuangchao
AU - Zhang, Kai
AU - Shi, Zhicong
AU - Wang, Bo
AU - Liu, Zhongzhu
AU - Bahnemann, Detlef W.
AU - Zhan, Feng
AU - Pan, Jia Hong
PY - 2025/7/3
Y1 - 2025/7/3
N2 - Ultrahigh-Ni layered oxides, LiNixCoyMn1−x−yO2 (x ≥0.85), have attracted increasing attention as promising cathode materialsfor high-energy-density lithium-ion batteries (LIBs). However, structuralinstability during the cyclic charge/discharge process limits theirwidespread application. Here, we present a bulk and interfacial synergisticmodification strategy that combines trace (∼1%) Nb doping with carboncoating to improve the electrochemical performances of Li-Ni0.9Co0.05Mn0.05O2 (NCM90) cathodes. The introduction of Nb dopingstabilizes the crystal structure and accelerates Li+ ion diffusion byexpanding the interslab spacing of the layered channels in NCM90.Simultaneously, the Ketjen black carbon coating effectively reduces theinterfacial resistance and shields the NCM90 cathodes from harmfulelectrolyte corrosion. Our developed dual modification leads to a synergistic effect, unlocking remarkable improvements in bothelectrochemical performance and structural stability of NCM90. The optimized Nb-doped NCM90@C delivers exceptional ratecapability (∼121 mAh g−1 at 10 C) and cyclic performance (∼192 mAh g−1 after 100 cycles at 0.5 C). Notably, voltage and capacitydecay during cycling is significantly suppressed, showcasing the powerful impact
AB - Ultrahigh-Ni layered oxides, LiNixCoyMn1−x−yO2 (x ≥0.85), have attracted increasing attention as promising cathode materialsfor high-energy-density lithium-ion batteries (LIBs). However, structuralinstability during the cyclic charge/discharge process limits theirwidespread application. Here, we present a bulk and interfacial synergisticmodification strategy that combines trace (∼1%) Nb doping with carboncoating to improve the electrochemical performances of Li-Ni0.9Co0.05Mn0.05O2 (NCM90) cathodes. The introduction of Nb dopingstabilizes the crystal structure and accelerates Li+ ion diffusion byexpanding the interslab spacing of the layered channels in NCM90.Simultaneously, the Ketjen black carbon coating effectively reduces theinterfacial resistance and shields the NCM90 cathodes from harmfulelectrolyte corrosion. Our developed dual modification leads to a synergistic effect, unlocking remarkable improvements in bothelectrochemical performance and structural stability of NCM90. The optimized Nb-doped NCM90@C delivers exceptional ratecapability (∼121 mAh g−1 at 10 C) and cyclic performance (∼192 mAh g−1 after 100 cycles at 0.5 C). Notably, voltage and capacitydecay during cycling is significantly suppressed, showcasing the powerful impact
UR - https://www.mendeley.com/catalogue/27d16614-0acd-3fcb-89e2-dd8d9da01278/
U2 - 10.1021/acs.energyfuels.5c00950
DO - 10.1021/acs.energyfuels.5c00950
M3 - Article
VL - 39
SP - 12745
EP - 12755
JO - Energy and Fuels
JF - Energy and Fuels
SN - 0887-0624
IS - 26
ER -
ID: 141043391