Sidorenkite (Na3MnPO4CO3): A new intercalation cathode material for Na-ion batteries

Hailong Chen, Qing Hao, Olivera Zivkovic, Geoffroy Hautier, Lin Shu Du, Yuanzhi Tang, Yan Yan Hu, Xiaohua Ma, Clare P. Grey, Gerbrand Ceder

Research output: Contribution to journalArticle

107 Scopus citations

Abstract

Na-ion batteries represent an effective energy storage technology with slightly lower energy and power densities but potentially lower material costs than Li-ion batteries. Here, we report a new polyanionic intercalation cathode material of an unusual chemical class: sidorenkite (Na3MnPO 4CO3). This carbonophosphate compound shows a high discharge capacity (∼125 mAh/g) and specific energy (374 Wh/kg). In situ X-ray diffraction measurement suggests that sidorenkite undergoes a solid solution type reversible topotactic structural evolution upon electrochemical cycling. Ex situ solid state NMR investigation reveals that more than one Na per formula unit can be deintercalated from the structure, indicating a rarely observed two-electron intercalation reaction in which both Mn 2+/Mn3+ and Mn3+/Mn4+ redox couples are electrochemically active.

Original languageEnglish (US)
Pages (from-to)2777-2786
Number of pages10
JournalChemistry of Materials
Volume25
Issue number14
DOIs
StatePublished - Jul 23 2013
Externally publishedYes

Keywords

  • MAS NMR
  • Na NMR
  • Na-ion batteries
  • batteries
  • carbonophosphates
  • cathode
  • hydrothermal
  • intercalation
  • phosphocarbonates

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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    Chen, H., Hao, Q., Zivkovic, O., Hautier, G., Du, L. S., Tang, Y., Hu, Y. Y., Ma, X., Grey, C. P., & Ceder, G. (2013). Sidorenkite (Na3MnPO4CO3): A new intercalation cathode material for Na-ion batteries. Chemistry of Materials, 25(14), 2777-2786. https://doi.org/10.1021/cm400805q