TY - JOUR
T1 - Ultralow-Strain Zn-Substituted Layered Oxide Cathode with Suppressed P2–O2 Transition for Stable Sodium Ion Storage
AU - Wang, Yanxia
AU - Wang, Liguang
AU - Zhu, He
AU - Chu, Jun
AU - Fang, Yongjin
AU - Wu, Lina
AU - Huang, Ling
AU - Ren, Yang
AU - Sun, Cheng-Jun
AU - Liu, Qi
AU - Ai, Xinping
AU - Yang, Hanxi
AU - Cao, Yuliang
PY - 2020/3/24
Y1 - 2020/3/24
N2 - Layered transition metal oxides have drawn much attention as a promising candidate cathode material for sodium-ion batteries. However, their performance degradation originating from strains and lattice phase transitions remains a critical challenge. Herein, a high-concentration Zn-substituted NaxMnO2 cathode with strongly suppressed P2–O2 transition is investigated, which exhibits a volume change as low as 1.0% in the charge/discharge process. Such ultralow strain characteristics ensure a stable host for sodium ion storage, which significantly improves the cycling stability and rate capability of the cathode material. Also, the strong coupling between the highly reversible capacity and the doping content of Zn in NaxMnO2 is investigated. It is suggested that a reversible anionic redox reaction can be effectively triggered by Zn ions and is also highly dependent on the Zn content. Such an ion doping strategy could shed light on the design and construction of stable and high-capacity sodium ion host.
AB - Layered transition metal oxides have drawn much attention as a promising candidate cathode material for sodium-ion batteries. However, their performance degradation originating from strains and lattice phase transitions remains a critical challenge. Herein, a high-concentration Zn-substituted NaxMnO2 cathode with strongly suppressed P2–O2 transition is investigated, which exhibits a volume change as low as 1.0% in the charge/discharge process. Such ultralow strain characteristics ensure a stable host for sodium ion storage, which significantly improves the cycling stability and rate capability of the cathode material. Also, the strong coupling between the highly reversible capacity and the doping content of Zn in NaxMnO2 is investigated. It is suggested that a reversible anionic redox reaction can be effectively triggered by Zn ions and is also highly dependent on the Zn content. Such an ion doping strategy could shed light on the design and construction of stable and high-capacity sodium ion host.
KW - phase transition
KW - sodium ion batteries
KW - substitution
KW - ultralow strain
UR - http://www.scopus.com/inward/record.url?scp=85079420620&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85079420620&origin=recordpage
U2 - 10.1002/adfm.201910327
DO - 10.1002/adfm.201910327
M3 - RGC 21 - Publication in refereed journal
SN - 1616-301X
VL - 30
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 13
M1 - 1910327
ER -
