Ultralow Volume Change of P2-Type Layered Oxide Cathode for Na-Ion Batteries with Controlled Phase Transition by Regulating Distribution of Na+

Liu, Zhengbo1,2; Shen, Jiadong1,2; Feng, Shihui4; Huang, Yalan3; Wu, Duojie4; Li, Fangkun1,2; Zhu, Yuanmin4; Gu, Meng4; Liu, Qi3; Liu, Jun1,2; Zhu, Min1,2

2021-08-01

10.1002/anie.202108109

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   影响因子和分区

1433-7851

1521-3773

Most P2-type layered oxides exhibit a large volume change when they are charged into high voltage, and it further leads to bad structural stability. In fact, high voltage is not the reason which causes the irreversible phase transition. There are two internal factors which affect structural evolution: the amount and distribution of Na ions retained in the lattice. Hereon, a series of layered oxides Na2/3MnxNix-1/3Co4/3-2xO2 (1/3 <= x <= 2/3) were synthesized. It is observed that different components have different structural evolutions during the charge/discharge processes, and further researches find that the distribution of Na ions in layers is the main factor. By controlling the distribution of Na ions, the phase transition process can be well controlled. As the referential component, P2-Na2/3Mn1/2Ni1/6Co1/3O2 cathode with uniform distribution of Na ions is cycled at the voltage window of 1.5-4.5 V, which exhibits a volume change as low as 1.9 %. Such a low strain is beneficial for cycling stability. The current work provides a new and effective route to regulate the structural evolution of the promising P2-type layered cathode for sodium ion batteries.

distribution of Na ions layered oxide cathodes Na ions retained in lattice structural evolution ultralow volume change

SCI ; EI

英语

NI期刊

通讯

National Natural Science Foundation of China[51771076,"NSFC51621001"] ; Guangdong "Pearl River Talents Plan"[2017GC010218] ; R&D Program in Key Areas of Guangdong Province[2020B0101030005] ; Guangdong Basic and Applied Basic Research Foundation[2020B1515120049] ; Shenzhen-Hong Kong Innovation Circle Category D Project[SGDX 2019081623240948]

Chemistry

Chemistry, Multidisciplinary

WOS:000683807100001

WILEY-V C H VERLAG GMBH

CHEMISTRY

Web of Science

1.China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China
2.China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mater, Guangzhou 510641, Peoples R China
3.City Univ Hong Kong, Dept Phys, South China Univ Technol, Hong Kong 999077, Peoples R China
4.Southern Univ Sci & Technol, South China Univ Technol, Acad Adv Interdisciplinary Studies, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Liu, Zhengbo,Shen, Jiadong,Feng, Shihui,et al. Ultralow Volume Change of P2-Type Layered Oxide Cathode for Na-Ion Batteries with Controlled Phase Transition by Regulating Distribution of Na+[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2021.

Liu, Zhengbo.,Shen, Jiadong.,Feng, Shihui.,Huang, Yalan.,Wu, Duojie.,...&Zhu, Min.(2021).Ultralow Volume Change of P2-Type Layered Oxide Cathode for Na-Ion Batteries with Controlled Phase Transition by Regulating Distribution of Na+.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION.

Liu, Zhengbo,et al."Ultralow Volume Change of P2-Type Layered Oxide Cathode for Na-Ion Batteries with Controlled Phase Transition by Regulating Distribution of Na+".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021).