Surface spinel reconstruction to suppress detrimental phase transition for stable LiNi0.8Co0.1Mn0.1O2 cathodes

Gan，Qingmeng1,2; Qin，Ning1,3; Li，Zhiqiang1; Gu，Shuai1,3; Liao，Kemeng1; Zhang，Kaili3; Lu，Li2; Xu，Zhenghe1; Lu，Zhouguang1

2022

10.1007/s12274-022-4754-z

Nano Research   Impact Factor & Quartile

1998-0124

1998-0000

Nickel-rich layered oxides are attractive cathode for lithium-ion batteries (LIBs) because of the high energy density and low cost. The critical problem is capacity fading caused by the highly reactive metastable phases under voltages of higher than 4.15 V. Herein, we find that facile Ar/H plasma treating could produce oxygen vacancies that will readily transform into homogeneous spinel layer (∼ 6 nm) on the LiNiCoMnO (NCM) surface after a few cycles of lithiation/delithiation procedure. Owing to the structural matching between spinel and layered structure, the diffusion of Li ions could remain fast upon cycling. Besides, the spinel layer is electrochemically inert, which guarantees surface stabilization and inhibits the detrimental phase transition from H2 to H3 at high voltages. Under the protection of the homogeneous spinel layer, the NCM electrode shows superior capacity retention of 91.2% after 200 cycles at the current density of 100 mA·g. This work proposes a novel strategy of surface reconstruction to stabilize nickel-rich layered oxide materials for LIBs. [Figure not available: see fulltext.].

lithium-ion batteries nickel-rich cathode phase transition superior stability surface spinel reconstruction

SCI ; EI

English

First ; Corresponding

Basic Research Project of the Science and Technology Innovation Commission of Shenzhen[JCYJ20200109141640095] ; Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials[ZDSYS20200421111401738] ; Leading Talents of Guangdong Province Program[2016LJ06C536] ; Guangdong-Hong Kong-Macao Joint Laboratory[2019B121205001] ; National Natural Science Foundation of China[21875097]

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

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

WOS:000836110900001

TSINGHUA UNIV PRESS

20223212552871

Ions ; Lithium compounds ; Lithium-ion batteries ; Manganese compounds ; Metastable phases ; Nickel oxide ; Surface reconstruction

Physical Chemistry:801.4 ; Inorganic Compounds:804.2 ; Physical Properties of Gases, Liquids and Solids:931.2

2-s2.0-85135535116

Scopus

1.Department of Materials Science and Engineering,Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials,Southern University of Science and Technology,Shenzhen,518055,China
2.Department of Mechanical Engineering,National University of Singapore,Singapore,117575,Singapore
3.Department of Mechanical Engineering,City University of Hong Kong,83 Tat Chee Avenue,999077,Hong Kong

Gan，Qingmeng,Qin，Ning,Li，Zhiqiang,et al. Surface spinel reconstruction to suppress detrimental phase transition for stable LiNi0.8Co0.1Mn0.1O2 cathodes[J]. Nano Research,2022.

Gan，Qingmeng.,Qin，Ning.,Li，Zhiqiang.,Gu，Shuai.,Liao，Kemeng.,...&Lu，Zhouguang.(2022).Surface spinel reconstruction to suppress detrimental phase transition for stable LiNi0.8Co0.1Mn0.1O2 cathodes.Nano Research.

Gan，Qingmeng,et al."Surface spinel reconstruction to suppress detrimental phase transition for stable LiNi0.8Co0.1Mn0.1O2 cathodes".Nano Research (2022).