Journal
RSC ADVANCES
Volume 9, Issue 55, Pages 32323-32327Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ra07718a
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Funding
- National Natural Science Foundation of China [21871008, 21801247]
- Key Research Program of Chinese Academy of Sciences [QYZDJ-SSW-JSC013, KGZD-EW-T06]
- CAS Centre for Excellence in Superconducting Electronics
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This work reports the synthesis of a new quasi two-dimensional layered compound, K-0.36(H2O)(y)WS2, for aqueous potassium ion storage. Its crystal structure determined by single crystal X-ray diffraction is composed of WS2 layers and disordered hydrated K+ stacking along the c direction alternately. Due to the large interlayer spacing and high conductivity, K-0.36(H2O)(y)WS2 is demonstrated to be a stable host for reversible intercalation and de-intercalation of hydrated K+ in K2SO4 aqueous solution.
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