articleNature CommunicationsDec 14, 2017GOLD OA

Fundamental interplay between anionic/cationic redox governing the kinetics and thermodynamics of lithium-rich cathodes

Centre National de la Recherche Scientifique · Collège de France · +9 more institutions

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Abstract

Reversible anionic redox has rejuvenated the search for high-capacity lithium-ion battery cathodes. Real-world success necessitates the holistic mastering of this electrochemistry's kinetics, thermodynamics, and stability. Here we prove oxygen redox reactivity in the archetypical lithium- and manganese-rich layered cathodes through bulk-sensitive synchrotron-based spectroscopies, and elucidate their complete anionic/cationic charge-compensation mechanism. Furthermore, via various electroanalytical methods, we answer how the anionic/cationic interplay governs application-wise important issues-namely sluggish kinetics, large hysteresis, and voltage fade-that afflict these promising cathodes despite widespread…

Citation impact

658
total citations
FWCI
22.21
Percentile
100%
References
73
Citations per year

Authors

6

Topics & keywords

Keywords
  • Cationic polymerization
  • Kinetics
  • Redox
  • Lithium (medication)
  • Chemistry
  • Thermodynamics
  • Materials science
  • Chemical engineering
UN Sustainable Development Goals
  • Affordable and clean energy
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