Surface spinel reconstruction to suppress detrimental phase transition for stable LiNi0.8Co0.1Mn0.1O2 cathodes
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.].
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
|WOS Research Area|
Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
|WOS Accession No|
|EI Accession Number|
Ions ; Lithium compounds ; Lithium-ion batteries ; Manganese compounds ; Metastable phases ; Nickel oxide ; Surface reconstruction
|ESI Classification Code|
Physical Chemistry:801.4 ; Inorganic Compounds:804.2 ; Physical Properties of Gases, Liquids and Solids:931.2
Cited Times [WOS]:3
|Document Type||Journal Article|
|Department||Department of Materials Science and Engineering|
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
|First Author Affilication||Department of Materials Science and Engineering|
|Corresponding Author Affilication||Department of Materials Science and Engineering|
|First Author's First Affilication||Department of Materials Science and Engineering|
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).
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