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

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

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Nucleation of lithium sulfide(Li2S)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 Li2S supersaturation and its nucleation.In this study,we draw inspiration from the ribosome-driven protein synthesis process in cells to prepare ultrasmall nitrogen-doped MoS2 nanocrys-tals anchored on porous nitrogen-doped carbon networks(N-MoS2-NC)electrocatalysts.Excitedly,the ex-situ SEM demonstrates that ribosome-inspired N-MoS2-NC electrocatalysts induce early nucleation and rapid growth of three-dimensional Li2S during discharge.Theoretical calculations reveal that the Li-S bond length in N-MoS2-Li2S(100)is shorter,and the corresponding interfacial formation energy is lower than in MoS2-Li2S(100).This accelerated conversion of lithium polysulfides to Li2S can enhance the utilization of active substances and inhibit the shuttle effect.This study highlights the potential of ribosome-inspired N-MoS2-NC in improving the electrochemical stability of Li-S batteries,providing valuable insights for future electrocatalyst design.

Lithium-sulfur batteriesElectrocatalystsNanocrystalsRibosome-inspiredNucleation and growth

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

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Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China

School of Energy and Power Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu,China

FEB Res Inst,Far East Battery,Wuxi 214200,Jiangsu,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaCollaborative Innovation Center for Advanced Micro/nanomaterials and Equipment(Coconstructed by Jiangsu Province and MinistrNatural Science Foundation of Jiangsu Province,China

5237208352173255BK20230538

2024

10.1016/j.jechem.2024.03.009

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.94(7)