An artificial cathode-electrolyte interphase enabling one-step sulfur transition in polyethylene oxide-based solid-state lithium-sulfur batteries

Zhang, Leicheng1; Wang, Tianshuai1; Chen, Junjie1; Wu, Maochun3; Zhao, Tianshou1,2

2024-08-01

10.1039/d4ta02413c

JOURNAL OF MATERIALS CHEMISTRY A   影响因子和分区

2050-7488

2050-7496

["All-solid-state lithium-sulfur (Li-S) batteries using polyethylene oxide (PEO)-based electrolytes hold the advantages of high theoretical energy density, cost-effectiveness, and high safety. However, the drawback of polysulfide dissolution in PEO results in a short battery lifespan. Here, we propose to construct an artificial cathode-electrolyte interphase (CEI) on the S cathode, which converts the S speciation pathway to a one-step solid transition, significantly mitigating the polysulfide migration in PEO. Surface analyses and theoretical calculations reveal the composition of the CEI and its effect on the reaction mechanism. As a result, the all-solid-state Li-S cell with the artificial CEI is able to deliver 873 mA h g-1 at 100 mA g-1 and maintain 739 mA h g-1 after 50 cycles, whereas the cell using the pristine S cathode retains only 364 mA h g-1. More remarkably, the artificial CEI enables the cell to achieve a high capacity retention rate of 83.1% at 300 mA g-1 over 200 cycles, demonstrating that our strategy of CEI manipulation effectively enhances the cycling reversibility of PEO-based solid-state Li-S batteries.","An artificial CEI is developed for PEO-based solid-state Li-S batteries, which inhibits the cohesion and dissolution of polysulfides in PEO and enables a one-step solid-state transition of sulfur."]

SCI ; EI

英语

通讯

Research Grants Council of the Hong Kong Special Administrative Region, China[R6005-20] ; Guangdong Major Project of Basic and Applied Basic Research[2023B0303000002]

Chemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:001301859900001

ROYAL SOC CHEMISTRY

Web of Science

1.Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Kowloon, Clear Water Bay, Hong Kong, Peoples R China
2.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
3.Hong Kong Polytech Univ, Dept Mech Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China

Zhang, Leicheng,Wang, Tianshuai,Chen, Junjie,et al. An artificial cathode-electrolyte interphase enabling one-step sulfur transition in polyethylene oxide-based solid-state lithium-sulfur batteries[J]. JOURNAL OF MATERIALS CHEMISTRY A,2024.

Zhang, Leicheng,Wang, Tianshuai,Chen, Junjie,Wu, Maochun,&Zhao, Tianshou.(2024).An artificial cathode-electrolyte interphase enabling one-step sulfur transition in polyethylene oxide-based solid-state lithium-sulfur batteries.JOURNAL OF MATERIALS CHEMISTRY A.

Zhang, Leicheng,et al."An artificial cathode-electrolyte interphase enabling one-step sulfur transition in polyethylene oxide-based solid-state lithium-sulfur batteries".JOURNAL OF MATERIALS CHEMISTRY A (2024).