典型文献
Synthesis of multicore-shell FeS2@C nanocapsules for stable potassium-ion batteries
文献摘要：
Transition-metal sulfides are widely used as anodes for potassium-ion batteries(PIBs)due to their low cost and high theoretical capacity.The practical application of such materials,however,is still impeded by their inherent low conductivity and obvious volume change during cycling.Herein,a flexible etch-assisted sulfidation strategy is reported.According to the strategy,the multicore-shell(MCS)nanocapsule structure is constructed,and then mesoporous FeS2 nanoparticles are encapsulated in the hollow carbon shell with adjustable interior space.The product,MCS-FeS2@C-20,not only features optimized inner space,but also delivers a large reversible capacity(519 mAh g-1 at a current density of 50 mA g-1),good rate capability(107 mAh g-1 at a high current density of 5 A g-1)and excellent cycling stability(capacity retention rate of 84.2％over 500 cycles at 0.5 A g-1),making it the promising anode material for PIBs.Notably,potassium-ion full cells(MCS-FeS2@C-20//Ko.4Co02)also show an improved potassium storage performance.
文献关键词：
中图分类号：
作者姓名：
Zhuangzhuang Zhang;Liping Duan;Yifan Xu;Chuanfeng Zhao;Jianchun Bao;Jian Shen;Xiaosi Zhou
作者机构：
Jiangsu Key Laboratory of New Power Batteries,Jiangsu Collaborative Innovation Center of Biomedical Functional Materials,School of Chemistry and Materials Science,Nanjing Normal University,Nanjing 210023,Jiangsu,China
文献出处：
引用格式：
[1]Zhuangzhuang Zhang;Liping Duan;Yifan Xu;Chuanfeng Zhao;Jianchun Bao;Jian Shen;Xiaosi Zhou-.Synthesis of multicore-shell FeS2@C nanocapsules for stable potassium-ion batteries)[J].能源化学,2022(10):126-132
A类：
nanocapsule,4Co02
B类：
Synthesis,multicore,shell,FeS2,nanocapsules,potassium,batteries,Transition,metal,sulfides,are,widely,used,anodes,PIBs,due,their,cost,high,theoretical,capacity,practical,application,such,materials,however,still,impeded,by,inherent,conductivity,obvious,volume,change,during,cycling,Herein,flexible,etch,assisted,sulfidation,strategy,reported,According,MCS,structure,constructed,then,mesoporous,nanoparticles,encapsulated,hollow,carbon,adjustable,interior,space,product,not,only,features,optimized,inner,but,also,delivers,large,reversible,mAh,current,density,good,capability,excellent,stability,retention,over,cycles,making,promising,Notably,full,cells,Ko,show,improved,storage,performance
AB值：
0.612022
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