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Hollow Structure Co1–xS/3D-Ti3C2Tx MXene Composite for Separator Modification of Lithium–Sulfur Batteries
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-12-02 , DOI: 10.1021/acsami.3c13234
Tianjiao Zhu 1 , Dong Chen 2 , Yangyang Mao 1 , Yongan Cao 1 , Wenju Wang 1 , Yuqian Li 1 , Hongfu Jiang 2 , Shen Shen 2 , Qunchao Liao 2
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-12-02 , DOI: 10.1021/acsami.3c13234
Tianjiao Zhu 1 , Dong Chen 2 , Yangyang Mao 1 , Yongan Cao 1 , Wenju Wang 1 , Yuqian Li 1 , Hongfu Jiang 2 , Shen Shen 2 , Qunchao Liao 2
Affiliation
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The commercial application of lithium–sulfur (Li–S) batteries has faced obstacles, including challenges related to low sulfur utilization, structural degradation resulting from electrode volume expansion, and migration of polysulfide lithium (LiPSs). Herein, Co1–xS/3D-Ti3C2Tx composites with three-dimensional (3D) multilayered structures are used as separator modification materials for Li–S batteries to solve these problems. The multilevel layered structure of Co1–xS/3D-Ti3C2Tx establishes an efficient electron and Li+ transfer path, alleviates the volume change during the battery charge–discharge process, and enhances the stability of the structure. In addition, the battery assembled with the modified separator shows excellent discharge capacity and cycle stability at 0.5 C and could maintain a high discharge capacity after 500 cycles. This work provides a method for designing highly dispersed metal sulfide nanoparticles on MXenes and extends the application of MXenes-based composites in electrochemical energy storage.
中文翻译:
用于锂硫电池隔膜改性的中空结构Co1–xS/3D-Ti3C2Tx MXene复合材料
锂硫(Li-S)电池的商业应用面临着障碍,包括硫利用率低、电极体积膨胀导致的结构退化以及多硫化物锂(LiPS)的迁移等挑战。在此,具有三维(3D)多层结构的Co 1– x S/3D-Ti 3 C 2 T x复合材料被用作Li-S电池的隔膜改性材料来解决这些问题。 Co 1– x S/3D-Ti 3 C 2 T x的多级层状结构建立了有效的电子和Li +传输路径,减轻了电池充放电过程中的体积变化,增强了结构的稳定性。此外,使用改性隔膜组装的电池在0.5C下表现出优异的放电容量和循环稳定性,并且在500次循环后仍能保持高放电容量。这项工作提供了一种在 MXenes 上设计高度分散的金属硫化物纳米粒子的方法,并扩展了 MXenes 基复合材料在电化学储能中的应用。
更新日期:2023-12-02
中文翻译:
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用于锂硫电池隔膜改性的中空结构Co1–xS/3D-Ti3C2Tx MXene复合材料
锂硫(Li-S)电池的商业应用面临着障碍,包括硫利用率低、电极体积膨胀导致的结构退化以及多硫化物锂(LiPS)的迁移等挑战。在此,具有三维(3D)多层结构的Co 1– x S/3D-Ti 3 C 2 T x复合材料被用作Li-S电池的隔膜改性材料来解决这些问题。 Co 1– x S/3D-Ti 3 C 2 T x的多级层状结构建立了有效的电子和Li +传输路径,减轻了电池充放电过程中的体积变化,增强了结构的稳定性。此外,使用改性隔膜组装的电池在0.5C下表现出优异的放电容量和循环稳定性,并且在500次循环后仍能保持高放电容量。这项工作提供了一种在 MXenes 上设计高度分散的金属硫化物纳米粒子的方法,并扩展了 MXenes 基复合材料在电化学储能中的应用。