Ribosome-inspired electrocatalysts inducing preferential nucleation and growth of three-dimensional lithium sulfide for high-performance lithium-sulfur batteries  

作　　者：Zhen Wu Wenfeng He Jiahui Yang Yunuo Gu Ruiqi Yang Yiran Sun Jiajia Yuan Xin Wang Junwu Zhu Yongsheng Fu 

机构地区：[1]Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China [2]School of Energy and Power Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu,China [3]FEB Res Inst,Far East Battery,Wuxi 214200,Jiangsu,China

出　　处：《Journal of Energy Chemistry》2024年第7期517-526,共10页能源化学（英文版）

基　　金：support from the National Natural Science Foundation of China(Grant Nos.52372083,52173255),the Collaborative Innovation Center for Advanced Micro/nanomaterials and Equipment(Co-constructed by Jiangsu Province and Ministry of Education);support from the Natural Science Foundation of Jiangsu Province,China(Grant No.BK20230538).

摘　　要：Nucleation of lithium sulfide(Li_(2)S)induced by electrocatalysts plays a crucial role in mitigating the shut-tle effect.However,short-chain polysulfides on electrocatalysts surfaces tend to re-dissolve into elec-trolytes,delaying Li_(2)S supersaturation and its nucleation.In this study,we draw inspiration from the ribosome-driven protein synthesis process in cells to prepare ultrasmall nitrogen-doped MoS_(2) nanocrys-tals anchored on porous nitrogen-doped carbon networks(N-MoS_(2)-NC)electrocatalysts.Excitedly,the ex-situ SEM demonstrates that ribosome-inspired N-MoS_(2)-NC electrocatalysts induce early nucleation and rapid growth of three-dimensional Li_(2)s during discharge.Theoretical calculations reveal that the Li-s bond length in N-MoS_(2)-Li_(2)S(100)is shorter,and the corresponding interfacial formation energy is lower than in MoS_(2)-Li_(2)S(100).This accelerated conversion of lithium polysulfides to Li_(2)S can enhance the utilization of active substances and inhibit the shuttle effect.This study highlights the potential of ribosome-inspired N-MoS_(2)-NC in improving the electrochemical stability of Li-S batteries,providing valuable insights for future electrocatalyst design.

关 键 词：Lithium-sulfur batteries ELECTROCATALYSTS Nanocrystals Ribosome-inspired Nucleation and growth 

分 类 号：TQ426[化学工程] TM912[电气工程—电力电子与电力传动]