articleJournal of the American Chemical SocietyApr 14, 2023GREEN OA

Realizing High Capacity and Zero Strain in Layered Oxide Cathodes via Lithium Dual-Site Substitution for Sodium-Ion Batteries

ZWZhonghan WuYNYouxuan NiSTSha TanEHEnyuan HuLHLunhua He

Nankai University · Brookhaven National Laboratory · +5 more institutions

PubMed
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Abstract

Sodium-ion batteries have garnered unprecedented attention as an electrochemical energy storage technology, but it remains challenging to design high-energy-density cathode materials with low structural strain during the dynamic (de)sodiation processes. Herein, we report a P2-layered lithium dual-site-substituted Na0.7Li0.03[Mg0.15Li0.07Mn0.75]O2 (NMLMO) cathode material, in which Li ions occupy both transition-metal (TM) and alkali-metal (AM) sites. The combination of theoretical calculations and experimental characterizations reveals that LiTM creates Na–O–Li electronic configurations to boost the capacity derived from the oxygen anionic redox, while LiAM serves as LiO6 prismatic pillars to stabilize the…

Citation impact

207
total citations
FWCI
25.80
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100%
References
57
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Authors

11

Topics & keywords

Topics
Keywords
  • Chemistry
  • Lithium (medication)
  • Dual (grammatical number)
  • Substitution (logic)
  • Ion
  • Strain (injury)
  • Cathode
  • Sodium
UN Sustainable Development Goals
  • Affordable and clean energy
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