典型文献
Multidimensional Hybrid Architecture Encapsulating Cobalt Oxide Nanoparticles into Carbon Nanotube Branched Nitrogen-Doped Reduced Graphene Oxide Networks for Lithium-Sulfur Batteries
文献摘要：
Lithium-sulfur batteries(LSBs)are regarded as promising candidates for the next-generation energy storage devices owing to their high-theoretical capacity(1675 mAh g-1)and affordable cost.However,several limitations of LSBs such as the lithium polysulfide shuttle,large volume expansion,and low electrical conductivity of sulfur need to be resolved for practical applications.To address these limitations,herein,a multidimensional architectured hybrid(Co@CNT/nG),where Co3O4 nanoparticles are encapsulated into three-dimensional(3D)porous N-doped reduced graphene oxide interconnected with carbon nanotube(CNT)branches,is synthesized through a simple pyrolysis method.The synergistic effect achieved through the homogeneously distributed and encapsulated Co3O4 nanoparticles,the interconnected CNT branches,and the 3D hierarchical porous structure and N-doping of Co@CNT/nG significantly suppresses the shuttle effect of lithium polysulfides and enhances the conversion redox kinetics for the improved sulfur utilization.We validate this effect through various measurements including symmetric cells,Li2S nucleation,shuttle currents,Tafel slopes,diffusion coefficients,and post-mortem analyses.Importantly,Co@CNT/nG-70S-based LSB cells achieve a high-specific capacity of 1193.1 mAh g-1 at 0.1 C and a low capacity decay rate of 0.030％per cycle for 700 cycles at 5 C,delivering a high areal capacity of 5.62 mAh cm-2 even with a loading of 6.5 mg cm-2.
文献关键词：
中图分类号：
作者姓名：
Jeong Seok Yeon;Young Hun Ko;Tae Ho Park;Hyunyoung Park;Jongsoon Kim;Ho Seok Park
作者机构：
School of Chemical Engineering,College of Engineering,Sungkyunkwan University,2066,Seobu-ro,Jangan-gu,Suwon-si Gyeonggi-do 440-746,Korea;Advanced Batteries Research Center,Korea Electronics Technology Institute,25,Saenari-ro,Bundang-gu,Seongnam-si Gyeonggi-do 13509,Korea;Department of Energy Science,Sungkyunkwan University,2066,Seobu-ro,Jangan-gu,Suwon-si Gyeonggi-do 440-746,Korea;Department of Health Sciences and Technology,Samsung Advanced Institute for Health Sciences and Technology(SAIHST),Sungkyunkwan University,2066,Seoburo,Jangan-gu,Suwon 440-746,South Korea
文献出处：
引用格式：
[1]Jeong Seok Yeon;Young Hun Ko;Tae Ho Park;Hyunyoung Park;Jongsoon Kim;Ho Seok Park-.Multidimensional Hybrid Architecture Encapsulating Cobalt Oxide Nanoparticles into Carbon Nanotube Branched Nitrogen-Doped Reduced Graphene Oxide Networks for Lithium-Sulfur Batteries)[J].能源与环境材料（英文）,2022(02):555-564
A类：
nG,70S
B类：
Multidimensional,Hybrid,Architecture,Encapsulating,Cobalt,Oxide,Nanoparticles,into,Carbon,Nanotube,Branched,Nitrogen,Doped,Reduced,Graphene,Networks,Lithium,Sulfur,Batteries,sulfur,batteries,LSBs,regarded,promising,candidates,next,generation,energy,storage,devices,owing,their,high,theoretical,capacity,mAh,affordable,cost,However,several,limitations,such,lithium,shuttle,large,volume,expansion,low,electrical,conductivity,need,resolved,practical,applications,To,address,these,herein,multidimensional,architectured,hybrid,CNT,where,Co3O4,nanoparticles,encapsulated,three,porous,doped,reduced,graphene,oxide,interconnected,carbon,nanotube,branches,synthesized,through,simple,pyrolysis,method,synergistic,effect,achieved,homogeneously,distributed,hierarchical,structure,doping,significantly,suppresses,polysulfides,enhances,conversion,redox,kinetics,improved,utilization,We,validate,this,various,measurements,including,symmetric,cells,Li2S,nucleation,currents,Tafel,slopes,diffusion,coefficients,post,mortem,analyses,Importantly,specific,decay,rate,per,cycles,delivering,areal,even,loading
AB值：
0.653694
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