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V2O5 Hollow Spheres as High Efficient Sulfur Host for Li-S Batteries
Author NameAffiliationE-mail
PAN Pei-Feng Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials(IAM), Synergistic Innovation Center forOrganic Electronics and Information Displays, Nanjing University of Posts & Telecommunications, Nanjing 210023, China  
CHEN Ping Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials(IAM), Synergistic Innovation Center forOrganic Electronics and Information Displays, Nanjing University of Posts & Telecommunications, Nanjing 210023, China  
FANG Ya-Nan Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials(IAM), Synergistic Innovation Center forOrganic Electronics and Information Displays, Nanjing University of Posts & Telecommunications, Nanjing 210023, China  
SHAN Qi Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials(IAM), Synergistic Innovation Center forOrganic Electronics and Information Displays, Nanjing University of Posts & Telecommunications, Nanjing 210023, China  
CHEN Ning-Na Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials(IAM), Synergistic Innovation Center forOrganic Electronics and Information Displays, Nanjing University of Posts & Telecommunications, Nanjing 210023, China  
FENG Xiao-Miao Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials(IAM), Synergistic Innovation Center forOrganic Electronics and Information Displays, Nanjing University of Posts & Telecommunications, Nanjing 210023, China iamxmfeng@njupt.edu.cn 
LIU Rui-Qing Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials(IAM), Synergistic Innovation Center forOrganic Electronics and Information Displays, Nanjing University of Posts & Telecommunications, Nanjing 210023, China  
LI Pan Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials(IAM), Synergistic Innovation Center forOrganic Electronics and Information Displays, Nanjing University of Posts & Telecommunications, Nanjing 210023, China  
MA Yan-Wen Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials(IAM), Synergistic Innovation Center forOrganic Electronics and Information Displays, Nanjing University of Posts & Telecommunications, Nanjing 210023, China iamywma@njupt.edu.cn 
Abstract: The V2O5 hollow spheres were used as a high efficient sulfur host for Li-S batteries, which was used for the storage of sulfur and restricting the shuttle effect of polysulfides. The hollow spheres had an average diameter around 500 nm, providing more space for storing sulfur, accommodating volumetric change of sulfur electrode. At the same time, V2O5 has a strong chemical adsorption of polysulfides, which can effectively limit the shuttle effect of polysulfides. The high capacity and excellent stability of Li-S batteries have been realized simultaneously due to the increasing of the storage of sulfur by the hollow structure and strong chemical adsorption for polysulfides by chemical bonding. The Li-S batteries with as-prepared V2O5/S cathode showed a high reversible capacity of 1 439 mAh·g-1 at 0.1C and stable cycling performance with a capacity of~600 mAh·g-1 after 300 cycles at 1C.
Keywords: lithium-sulfur batteries  V2O5 hollow spheres  cathode  shuttle effect  chemical adsorption
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PAN Pei-Feng,CHEN Ping,FANG Ya-Nan,SHAN Qi,CHEN Ning-Na,FENG Xiao-Miao,LIU Rui-Qing,LI Pan,MA Yan-Wen.V2O5 Hollow Spheres as High Efficient Sulfur Host for Li-S Batteries[J].Chinese Journal of Inorganic Chemistry,2020,36(3):575-583.
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Chinese Journal of Inorganic Chemistry