Journal
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
Volume 122, Issue -, Pages 31-35Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2018.06.014
Keywords
Cathode; Nanoparticle; Potassium-ion battery; Prussian blue analogue
Funding
- National Natural Science Foundation of China [21773188]
- Basic and Frontier Research Project of Chongqing [cstc2015jcyjA50031]
- Fundamental Research Funds for the Central Universities [XDJK2017A002, XDJK2017B048]
- Program for Innovation Team Building at Institutions of Higher Education in Chongqing [CXTDX201601011]
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In this study, potassium titanium hexacyanoferrate (K0.3Ti0.75 Fe-0.25 [Fe(CN)(6)](0.95).2.8H(2)0) was obtained by a simple co-precipitation and used as a cathode material in potassium-ion batteries (KIBs) for the first time. The reversible redox couples of Fe and Ti could provide 136.7mAhg(-1) at 50mAg(-1) and 113mAhg(-1) at lOOmAg(-1) in the first discharge. Considering that this material is easy to synthesize, with low cost and good electrochemical performance, our results suggest the possible development of KIBs as cathodes and future research into rechargeable KIBs.
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