Integration of Desulfurization and Lithium-Sulfur Batteries Enabled by Amino-Functionalized Porous Carbon Nanofibers  

作　　者：Minghui Sun Xuzhen Wang Yong Li Zongbin Zhao Jieshan Qiu 

机构地区：[1]State Key Lab of Fine Chemicals,School of Chemical Engineering,Liaoning Key Lab for Energy Materials and Chemical Engineering,Faculty of Chemical,Environmental and Biological Science and Technology,Dalian University of Technology,Dalian 116024,China [2]College of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029,China

出　　处：《Energy & Environmental Materials》2023年第2期334-343,共10页能源与环境材料（英文）

基　　金：financial support from projects funded by the National Natural Science Foundation of China(22179017,52172038).

摘　　要：Hydrogen sulfide(H_(2)S)is an industrial exhausted gas that is highly toxic to humans and the environment.Combining desulfurization and fabrication of cathode materials for lithium-sulfur batteries(LSBs)can solve this issue with a double benefit.Herein,the amino-functionalized lotus root-like carbon nanofibers(NH_(2)-PLCNFs)are prepared by the amination of electrospinning carbon nanofibers under dielectric barrier discharge plasma.Selective catalytic oxidation of H_(2)S to elemental sulfur(S)is achieved over the metalfree NH_(2)-PLCNFs catalyst,and the obtained composite S@NH_(2)-PLCNFs is further used as cathode in LSBs.NH_(2)-PLCNFs enable efficient desulfurization(removal capacity as high as 3.46 g H_(2)S g^(−1) catalyst)and strongly covalent stabilization of S on modified carbon nanofibers.LSBs equipped with S@NH_(2)-PLCNFs deliver a high specific capacity of 705.8 mA h g^(−1) at 1 C after 1000 cycles based on the spatial confinement and the covalent stabilization of electroactive materials on amino-functionalized porous carbon matrix.It is revealed that S@NH_(2)-PLCNFs obtained by this kind of chemical vapor deposition leads to a more homogeneous S distribution and superior electrochemical performance to the sample S/NH_(2)-PLCNF-M prepared by the traditional molten infusion.This work opens a new avenue for the combination of environment protection and energy storage.

关 键 词：AMINO-FUNCTIONALIZATION DESULFURIZATION lithium-sulfur batteries porous carbon nanofiber sulfur immobilization 

分 类 号：TM912[电气工程—电力电子与电力传动]