4.7 Article

A vanadium-based metal-organic phosphate framework material K2[(VO)2(HPO4)2(C2O4)] as a cathode for potassium-ion batteries

Journal

CHEMICAL COMMUNICATIONS
Volume 55, Issue 5, Pages 659-662

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cc08734b

Keywords

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Funding

  1. National Science Foundation of China [NSAF U1630106, 21875237, 51577175]
  2. National Key RAMP
  3. D Program of China [2018YFB0905400]

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Herein, we report a layered material K-2[(VO)(2)(HPO4)(2)(C2O4)] with a large interplanar lattice spacing. Highly reversible K+ extraction and insertion in the layers are achieved, with a good cycling stability of up to 200 cycles (83% of retention). And the structural evolution of this material during the electrochemical processes is explored.

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