Yolk‐Shell Sb2S3@C Hollow Microspheres with Controllable Interiors for High Space Utilization and Structural Stability of Na‐Storage. Issue 3 (10th February 2022)

• Record Type: Journal Article
• Authors: Ding, Xingxin; Shao, Jie; Lv, Linze; Zhu, Yunhao; Jiang, Yu; Shi, Qiang; Qu, Qunting; Zheng, Honghe
• Is Part Of: ChemNanoMat. Volume 8:Issue 3(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-02-10
• Subjects: antimony sulfide -- anode -- sodium ion batteries -- yolk-shell -- hollow; Nanochemistry -- Periodicals; Nanostructured materials -- Periodicals; Nanochemistry; Nanostructured materials; Periodicals; 541.2
• DOI: 10.1002/cnma.202100515
• Languages: English
• ISSNs: 2199-692X

Abstract

Abstract: Structural stability, space utilization and appropriate working potentials are the most crucial parameters for evaluating the practical application of various electrode materials in sodium‐ion batteries (SIBs). To obtain a high‐performance anode material for SIBs, a novel Sb2 S3 @carbon composite with unique and controllable hollow microspherical structures is prepared through a facile and large‐scalable approach. By adjusting the precursor concentrations, yolk‐shell and simple hollow Sb2 S3 @carbon microspheres are obtained respectively. The formation mechanisms of different hollow interiors are discussed. It is found that simple hollow Sb2 S3 @carbon microspheres tend to collapse into fragments when being used as the anode materials of SIBs, leading to severe electrolyte decomposition and high charge‐transfer resistance. In contrast, yolk‐shell Sb2 S3 @carbon not only possesses high space utilization, but also preserves the microspherical structure well after long‐term sodiation/desodiation reactions, endowing it with high capacity, good cycling stability, and fast charge/discharge capability. Abstract : Sb2 S3 @C microspheres with unique and controllable yolk‐shell structures possess high space utilization, can accommodate the volume expansion of Sb2 S3 and preserve the microspherical structure well after long‐term cycling. Yolk‐shell Sb2 S3 @C is demonstrated to be superior to simple hollow Sb2 S3 @C microspheres as the anode materials of Na‐ion batteries.