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Ship in bottle synthesis of yolk-shell MnS@hollow carbon spheres for sodium storage
Jianyun Zhao1, Yuxiao Yang1, Chuan Jiang2
1Department of Applied Chemistry, School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, People's Republic of China.
Abstract:
Yolk-shell structure can effectively alleviate the volume change of electrodes during electrochemical charge/discharge. In this paper, we provide a new ship in bottle strategy to synthesize MnS@C sodium ion battery anode with yolk-shell nanostructure. The obtained yolk-shell structures were uniform spheres. The space between the carbon shell and MnS core allows the volume change of MnS without deforming the carbon shell or damaging the solid electrolyte interface film formed on the outer surface. The MnS@C yolk-shell structure showed stable cycle stability (336 mAh g-1capacity after 200 cycles at 0.5 A g-1current density).
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