Invoking Interfacial Engineering Boosts Structural Stability Empowering Exceptional Cyclability of Ni-Rich Cathode

Chu, Youqi1,2; Mu, Yongbiao1,2; Gu, Huicun1,2; Hu, Yan1,2; Wei, Xianbin1; Zou, Lingfeng1,2; Yu, Can3; Xu, Xiaoqian1,2; Kang, Shaowei1,2; Li, Kang4; Han, Meisheng1,2; Zhang, Qing1,2; Zeng, Lin1,2

2024-06-01

10.1002/adma.202405628

ADVANCED MATERIALS   影响因子和分区

0935-9648

1521-4095

The cycling stability of LiNi0.8Co0.1Mn0.1O2 under high voltages is hindered by the occurrence of hybrid anion- and cation-redox processes, leading to oxygen escape and uncontrolled phase collapse. In this study, an interfacial engineering strategy involving a straightforward mechanical ball milling and low-temperature calcination, employing a Se-doped and FeSe2&Fe2O3-modified approach is proposed to design a stable Ni-rich cathode. Se2- are selectively adsorbed within oxygen vacancies to form O & horbar;TM & horbar;Se bond, effectively stabilizing lattice oxygen, and preventing structural distortion. Simultaneously, the Se-NCM811//FeSe2//Fe2O3 self-assembled electric field is activated, improving interfacial charge transfer and coupling. Furthermore, FeSe2 accelerates Li+ diffusion and reacts with oxygen to form Fe2O3 and SeO2. The Fe2O3 coating mitigates hydrofluoric acid erosion and acts as an electrostatic shield layer, limiting the outward migration of oxygen anions. Impressively, the modified materials exhibit significantly improved electrochemical performance, with a capacity retention of 79.7% after 500 cycles at 1C under 4.5 V. Furthermore, it provides an extraordinary capacity retention of 94.6% in 3-4.25 V after 550 cycles in pouch-type full battery. This dual-modification approach demonstrates its feasibility and opens new perspective for the development of stable lithium-ion batteries operating at high voltages.

electrochemical performance interfacial engineering LiNi0.8Co0.1Mn0.1O2 oxygen vacancy structural distortion

SCI ; EI

英语

第一 ; 通讯

High level of special funds[G03034K001] ; Shenzhen Science and Technology Plan Project[SGDX20230116091644003] ; Shenzhen Key Laboratory of Advanced Energy Storage[ZDSYS20220401141000001] ; null[22309078]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001249447300001

WILEY-V C H VERLAG GMBH

MATERIALS SCIENCE

Web of Science

1.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen Key Lab Adv Energy Storage, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, SUSTech Energy Inst Carbon Neutral, Shenzhen 518055, Peoples R China
3.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
4.Dongguan Univ Technol, Sch Mat Sci & Engn, Dongguan 523808, Peoples R China

Chu, Youqi,Mu, Yongbiao,Gu, Huicun,et al. Invoking Interfacial Engineering Boosts Structural Stability Empowering Exceptional Cyclability of Ni-Rich Cathode[J]. ADVANCED MATERIALS,2024.

Chu, Youqi.,Mu, Yongbiao.,Gu, Huicun.,Hu, Yan.,Wei, Xianbin.,...&Zeng, Lin.(2024).Invoking Interfacial Engineering Boosts Structural Stability Empowering Exceptional Cyclability of Ni-Rich Cathode.ADVANCED MATERIALS.

Chu, Youqi,et al."Invoking Interfacial Engineering Boosts Structural Stability Empowering Exceptional Cyclability of Ni-Rich Cathode".ADVANCED MATERIALS (2024).