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ORIGINAL RESEARCH article

Front. Chem.
Sec. Electrochemistry
Volume 12 - 2024 | doi: 10.3389/fchem.2024.1459324
This article is part of the Research Topic All-Solid-State Lithium-Sulfur Battery with High Safety and Energy Density View all articles

Mo 3 P/Mo heterojunction for efficient conversion of lithium polysulfides in high-performance lithium-sulfur batteries

Provisionally accepted
ZhongPeng Sun ZhongPeng Sun Yuanhao Wang Yuanhao Wang *Jie Xu Jie Xu *Xia Wang Xia Wang *
  • Qingdao University, Qingdao, China

The final, formatted version of the article will be published soon.

    Realizing efficient immobilization of lithium polysulfides (LiPSs) as well as reversible catalytic conversion between LiPSs and the insoluble Li2S is vital to restrain the shuttle effect, which requires highly reactive catalysts for high-performance Li-S batteries. Here, three-dimensional ordered porous Mo-based metal phosphides (3DOP Mo3P/Mo) with heterogeneous structures were fabricated and utilized as separator-modified coatings for Li-S batteries to catalyze the conversion of LiPSs. The adsorption, catalytic and electrochemical performance of the corresponding cells were compared among 3DOP Mo3P/Mo and 3DOP Mo, by kinetic and electrochemical performance measurements. It was found that the cell with 3DOP Mo3P/Mo modified separator deliver better electrochemical performance, with a high specific capacity of 469.66 mAh g -1 after 500 cycles at a high current density of 1 C. This work provides an idea and a guideline for the design of the separator modification for high-performance Li-S batteries.

    Keywords: lithium-sulfur batteries1, three-dimensional ordered porous (3DOP) architecuture2, heterogeneous structure3, Mo3P4, Mo5

    Received: 04 Jul 2024; Accepted: 18 Jul 2024.

    Copyright: © 2024 Sun, Wang, Xu and Wang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    Yuanhao Wang, Qingdao University, Qingdao, China
    Jie Xu, Qingdao University, Qingdao, China
    Xia Wang, Qingdao University, Qingdao, China

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