articleAdvanced MaterialsJan 9, 2024Closed access

Regulation of Coordination Chemistry for Ultrastable Layered Oxide Cathode Materials of Sodium‐Ion Batteries

SGSuning GaoZZZhuo ZhuHFHengyi FangKFKun FengJZJun Zhong

Nankai University · Soochow University · +2 more institutions

Indexed incrossref

Abstract

Abstract Layered transition‐metal (TM) oxide cathodes have attracted growing attention in sodium‐ion batteries (SIBs). However, their practical implementation is plagued by Jahn–Teller distortion and irreversible cation migration, leading to severe voltage decay and structure instability. Herein, O3‐Na 0.898 K 0.058 Ni 0.396 Fe 0.098 Mn 0.396 Ti 0.092 O 2 (KT‐NFM) is reported as an ultrastable cathode material via multisite substitution with rigid KO 6 pillars and flexible TiO 6 octahedra. The K pillars induce contracted TMO 2 slabs and their strong Coulombic repulsion to inhibit Ni/Fe migration; and Ti incorporation reinforces the hybridization of Ni(3deg*)‐O(2p) to mitigate the undesired O3–O'3 phase…

Citation impact

178
total citations
FWCI
33.85
Percentile
100%
References
43
Citations per year

Authors

13

Topics & keywords

Topics
Keywords
  • Materials science
  • Cathode
  • Coordination complex
  • Oxide
  • Sodium
  • Ion
  • Nanotechnology
  • Inorganic chemistry
No related works found for this paper.

Funding