4.6 Article

Robust LiTi2(PO4)3 microflowers as high-rate and long-life cathodes for Mg-based hybrid-ion batteries

Journal

JOURNAL OF MATERIALS CHEMISTRY A
Volume 5, Issue 27, Pages 13950-13956

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta03392c

Keywords

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Funding

  1. National Key Research and Development Program of China [2016YFA0202603]
  2. National Basic Research Program of China [2013CB934103]
  3. Programme of Introducing Talents of Discipline to Universities [B17034]
  4. National Natural Science Foundation of China [51521001, 51602239]
  5. National Natural Science Fund for Distinguished Young Scholars [51425204]
  6. Hubei Provincial Natural Science Foundation of China [2016CFB267]
  7. Fundamental Research Funds for the Central Universities [WUT: 2016III001, 2016III003, 2016IVA090, 2017III009, 2017III007]
  8. China Scholarship Council [201606955096]

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Novel NASICON-type carbon-coated LiTi2(PO4)(3) microflowers (LTP-F/C) as a hybrid magnesium-lithium-ion battery (MLIB) cathode is presented for the first time. Benefiting from the synergistic effect of the NASICON structure, nanosheet-constructed hierarchical architecture, and uniform carbon coating of LTP-F/C, this hybrid MLIB exhibits extraordinary electrochemical performance: ultra-high cycling stability (capacity retention of 80% after 3000 cycles at 10 C) and outstanding rate capability (94 mA h g(-1) at 20 C) under a high discharge voltage plateau of similar to 1.71 V (vs. Mg/Mg2+). This hybrid battery system design is highly promising for large-scale energy storage applications.

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