Improving the stability of P2-type NaMn2/3Ni1/3O2 via phasic intergrowth induced by Li-ion substitution

Huang，Fengbin1; Ge，Yilin1; Cheng，Hua2; Wang，Feng1; Yao，Qingrong1; Chen，Zhenhua3; Lu，Zhouguang2; Deng，Jianqiu1

2022-07-01

10.1016/j.mtener.2022.101041

Materials Today Energy   Impact Factor & Quartile

2468-6069

Layered transition metal oxides are attractive cathode materials for sodium-ion batteries but are largely hindered by the low capacity and poor cycling stability. Herein, Na is substituted by Li to enhance the capacity and stability of Na(1-x)LixMn(2/3)Ni(1/3)O(2). It is found that Li substitution can provide robust structure benefiting from contracted adjacent transition metal layers owing to strong bonding property of O-Li-O and incremental inactive Mn4+. So it follows that noxious Mn3+ Jahn-Teller distortion and slabs slipping are mitigated. Also, the presence of "Li pillar " disturbs the Na+/vacancies and transition metal ordering during Na extraction, preventing phase transformation during deep desodiation process. Consequently, the Na1-xLixMn2/Ni-3(1)/O-3(2) demonstrates high capacity, remarkable rate capability, and long-term cycling life. Among them, Na0.8Li0.2Mn2/Ni-3(1)/O-3(2) cathode delivers a discharge capacity of 115.3 mA h/g, with a capacity retention of 86.0% after 100 cycles. This simple strategy to stabilize the layered structure oxides is inspiring to design high-performance cathode materials for sodium-ion batteries. (c) 2022 Elsevier Ltd. All rights reserved.

Sodium-ion batteries Manganese-rich cathode P2-type layered oxides Long life Air stability

SCI ; EI

English

Corresponding

Natural Science Foundation of Guangxi Province[2019GXNSFDA245014] ; National Natural Science Foundation of China[21875097] ; Basic Research Project of the Science and Technology Innovation Com-mission of Shenzhen[JCYJ 20170817110251498] ; Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials[ZDSYS20200421111401738] ; Guangdong-Hong Kong-Macau Joint Laboratory[2019B121205001]

Chemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000822723500001

ELSEVIER SCI LTD

20222512254935

Lithium ; Lithium-ion batteries ; Metal ions ; Sodium-ion batteries ; Stability ; Transition metal oxides ; Transition metals

Metallurgy and Metallography:531 ; Metallurgy:531.1 ; Lithium and Alloys:542.4 ; Alkali Metals:549.1 ; Secondary Batteries:702.1.2 ; Electronic Components and Tubes:714

2-s2.0-85132231906

Web of Science

1.School of Materials Science and Engineering & Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guilin,Guangxi,541004,China
2.Department of Materials Science and Engineering,Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials,Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices,Southern University of Science and Technology,Shenzhen,518055,China
3.Shanghai Synchrotron Radiation Facility,Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai,201210,China

Huang，Fengbin,Ge，Yilin,Cheng，Hua,et al. Improving the stability of P2-type NaMn2/3Ni1/3O2 via phasic intergrowth induced by Li-ion substitution[J]. Materials Today Energy,2022,27.

Huang，Fengbin.,Ge，Yilin.,Cheng，Hua.,Wang，Feng.,Yao，Qingrong.,...&Deng，Jianqiu.(2022).Improving the stability of P2-type NaMn2/3Ni1/3O2 via phasic intergrowth induced by Li-ion substitution.Materials Today Energy,27.

Huang，Fengbin,et al."Improving the stability of P2-type NaMn2/3Ni1/3O2 via phasic intergrowth induced by Li-ion substitution".Materials Today Energy 27(2022).