Formation of Polypyrrole‐Coated Sb2Se3 Microclips with Enhanced Sodium‐Storage Properties

• Published in: Angewandte Chemie International Edition Vol. 57; no. 31; pp. 9859 - 9863
• Main Authors: Fang, Yongjin, Yu, Xin‐Yao, Lou, Xiong Wen (David)
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 26-07-2018
• Edition: International ed. in English
• Subjects: Anodes; Antimony; Antimony compounds; Batteries; Chemical synthesis; Coated electrodes; Coatings; Electrode materials; ion-exchange; microclips; polypyrrole; Polypyrroles; Sb2Se3; Selenides; Sodium; Sodium-ion batteries; Specific capacity; Storage
• ISSN: 1433-7851; 1521-3773
• DOI: 10.1002/anie.201805552

Antimony‐based electrode materials with high specific capacity have aroused considerable interest as anode materials for sodium‐ion batteries (SIBs). Herein, we develop a template‐engaged ion‐exchange method to synthesize Sb2Se3 microclips, and the as‐obtained Sb2Se3 microclips are further in situ coated with polypyrrole (PPy). Benefiting from the structural and compositional merits, these PPy‐coated Sb2Se3 microclips exhibit enhanced sodium‐storage properties in terms of high reversible capacity, superior rate capability, and stable cycling performance.
The PPy who loved me: PPy‐coated Sb2Se3 microclips are synthesized by a simple ion‐exchange method and subsequent in situ polypyrrole (PPy) coating. With their unique structural and composition, these PPy‐coated Sb2Se3 microclips exhibit enhanced sodium‐storage performance in terms of high specific capacity, excellent rate capability, and good cycling stability.