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Endoplasmic-reticulum-like catalyst coating on separator to enhance polysulfides conversion for lithium-sulfur batteries
文献摘要：
Lithium-sulfur(Li-S)batteries with high theoretical specific energy of 2600 Wh kg-1 are one of promising candidates for next-generation energy storage devices.However,the severe shuttle effect of intermediate polysulfides leads to rapid capacity decay during battery cycling,especially at high sulfur loading and high current density.Herein,the MnO nanoparticles covered carbon with endoplasmic-reticulum-like structure(MnO@ERC)as separator coating for Li-S batteries is proposed.The MnO@ERC coating can act as upper current collector to enhance electrical conductivity of cathode and decrease the interface impedance of the whole battery.More importantly,both the polar MnO nanoparticles and Mn304 formed at the end of the charging process can catalyze the conversion of lithium polysulfides,which is convinced by the high adsorption energy and the elongate S-S bond.As a result,Li-S batteries based on MnO@ERC coating separator showed stable cycle for 350 cycles under 0.5C,high discharge specific capacity of 783.6 mAh g-1 after 100 cycles at 0.2 C,534.7 mAh g-1 after 100 cycles under the sulfur loading of 5.26 mg cm-2 and low self-discharge rate of 9.1％after resting 48 h..
文献关键词：
中图分类号：
[1] 医药、卫生（R） / 基础医学（R3） / 病理学（R36） / 病理过程（R364）
[2] 医药、卫生（R） / 药学（R9） / 药理学（R96） / 实验药理学（R965）
[3] 天文学、地球科学（P） / 地球物理学（P3） / 空间物理（P35）
作者姓名：
Sai-Nan Xu;Teng Zhao;Li-Li Wang;Yong-Xin Huang;Yu-Sheng Ye;Nan-Xiang Zhang;Tao Feng;Li Li;Feng Wu;Ren-Jie Chen
作者机构：
Beijing Key Laboratory of Environmental Science and Engineering,School of Material Science&Engineering,Beijing Institute of Technology,Beijing 100081,China;Institute of Advanced Technology,Beijing Institute of Technology,Jinan 250300,Shandong,China;Collaborative Innovation Center of Electric Vehicles in Beijing,Beijing 100081,China
文献出处：
能源化学
引用格式：
[1]Sai-Nan Xu;Teng Zhao;Li-Li Wang;Yong-Xin Huang;Yu-Sheng Ye;Nan-Xiang Zhang;Tao Feng;Li Li;Feng Wu;Ren-Jie Chen-.Endoplasmic-reticulum-like catalyst coating on separator to enhance polysulfides conversion for lithium-sulfur batteries)[J].能源化学,2022(04):423-431
A类：
Mn304
B类：
Endoplasmic,reticulum,like,catalyst,coating,separator,enhance,polysulfides,conversion,lithium,sulfur,batteries,Lithium,high,theoretical,specific,energy,Wh,are,one,promising,candidates,next,generation,storage,devices,However,severe,shuttle,effect,intermediate,leads,rapid,capacity,decay,during,battery,cycling,especially,loading,current,density,Herein,MnO,nanoparticles,covered,carbon,endoplasmic,structure,ERC,proposed,act,upper,collector,electrical,conductivity,cathode,decrease,interface,impedance,whole,More,importantly,both,polar,formed,charging,process,catalyze,which,convinced,by,adsorption,elongate,bond,result,showed,stable,cycles,under,5C,discharge,mAh,after,low,self,rate,resting
AB值：
0.538664
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