典型文献
Unraveling the morphological evolution mechanism of solid sulfur species in lithium-sulfur batteries with operando light microscopy
文献摘要：
Solid-liquid phase conversion between various sulfur species in lithium-sulfur(Li-S)batteries is a funda-mental reaction of the sulfur cathode.Disclosing the morphological evolution of solid sulfur species upon cycling is of great significance to achieving high energy densities.However,an in-depth investigation of the internal reaction is still lacking.In this work,the evolution process of solid sulfur species on carbon substrates is systematically studied by using an operando light microscope combined with in situ elec-trochemical impedance spectra technology.The observation of phenomena such as bulk solid sulfur spe-cies can form and dissolve independently of the conductive substrates and the transformation of supercooled liquid sulfur to crystalline sulfur.Based on the phenomena mentioned above,a possible mechanism was proposed in which the dissolution reaction of solid sulfur species is a spatially free reac-tion that involves isotropic physical dissolution,diffusion of molecules,and finally the electrochemical reaction.Correspondingly,the formation of solid sulfur species tends to be a form of crystallization in a saturated solution rather than electrodeposition,as is commonly believed.Our findings offer new insights into the reaction of sulfur cathodes and provide new opportunities to design advanced sulfur cathodes for Li-S batteries.
文献关键词：
中图分类号：
作者姓名：
Jingqiang Zheng;Chaohong Guan;Huangxu Li;Yangyang Xie;Junxian Hu;Kai Zhang;Bo Hong;Yanqing Lai;Jie Li;Zhian Zhang
作者机构：
School of Metallurgy and Environment,Hunan Province Key Laboratory of Nonferrous Value-Added Metallurgy,Central South University,Changsha 410083,Hunan,China;University of Michigan-Shanghai Jiao Tong University Joint Institute,Shanghai Jiao Tong University,Shanghai 200240,China;Department of Chemistry,City University of Hong Kong,Kowloon,Hong Kong 999077,China
文献出处：
引用格式：
[1]Jingqiang Zheng;Chaohong Guan;Huangxu Li;Yangyang Xie;Junxian Hu;Kai Zhang;Bo Hong;Yanqing Lai;Jie Li;Zhian Zhang-.Unraveling the morphological evolution mechanism of solid sulfur species in lithium-sulfur batteries with operando light microscopy)[J].能源化学,2022(10):460-468
A类：
Disclosing
B类：
Unraveling,morphological,evolution,mechanism,solid,sulfur,species,lithium,batteries,operando,light,microscopy,Solid,liquid,phase,conversion,between,various,Li,funda,mental,reaction,upon,cycling,great,significance,achieving,high,energy,densities,However,depth,investigation,internal,still,lacking,In,this,work,process,carbon,substrates,systematically,studied,by,using,microscope,combined,situ,impedance,spectra,technology,observation,phenomena,such,bulk,dissolve,independently,conductive,transformation,supercooled,crystalline,Based,mentioned,above,possible,was,proposed,which,dissolution,spatially,free,that,involves,isotropic,physical,diffusion,molecules,finally,electrochemical,Correspondingly,tends,crystallization,saturated,rather,than,electrodeposition,commonly,believed,Our,findings,offer,new,insights,into,cathodes,provide,opportunities,design,advanced
AB值：
0.532876
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
