首页|Two-dimensional layered In2P3S9:A novel superior anode material for sodium-ion batteries
Two-dimensional layered In2P3S9:A novel superior anode material for sodium-ion batteries
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Developing reliable and efficient anode materials is essential for the successfully practical application of sodium-ion batteries.Herein,employing a straightforward and rapid chemical vapor deposition tech-nique,two-dimensional layered ternary indium phosphorus sulfide(ln2P3S9)nanosheets are prepared.The layered structure and ternary composition of the In2P3S9 electrode result in impressive electrochem-ical performance,including a high reversible capacity of 704 mA h g-1 at 0.1 A g-1,an outstanding rate capability with 425 mA h g1 at 5 A g-1,and an exceptional cycling stability with a capacity retention of 88％after 350 cycles at 1 A g-1.Furthermore,sodium-ion full cell also affords a high capacity of 308 and 114 mA h g-1 at 0.1 and 5 A g-1.Ex-situ X-ray diffraction and ex-situ high-resolution transmission elec-tron microscopy tests are conducted to investigate the underlying Na-storage mechanism of In2P3S9.The results reveal that during the first cycle,the P-S bond is broken to form the elemental P and In2S3,col-lectively contributing to a remarkably high reversible specific capacity.The excellent electrochemical energy storage results corroborate the practical application potential of In2P3S9 for sodium-ion batteries.
Metal thiophosphateIn2P3S9Anode materialSodium-ion batteryFull cell
Longsheng Zhong、Hongneng Chen Yanzhe Sheng、Yiting Sun、Yanhe Xiao、Baochang Cheng、Shuijin Lei
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School of Physics and Materials Science,Nanchang University,Nanchang 330031,Jiangxi,China
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