Conductive polymer-coated red phosphorus encapsulated in 3D graphene oxide aerogel for high-performance sodium-ion batteries anode

• Published in: Journal of electroanalytical chemistry (Lausanne, Switzerland) Vol. 966; p. 118413
• Main Authors: Zhu, Youyu, Tang, Xiaofang, You, Zonglin, Zhang, Yixi, Du, Wei, Duan, Yingfeng, Cai, Jiangtao, Zhang, Yating
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.08.2024
• Subjects: Anode materials; Conductive polymer; Red phosphorus; Reduced graphene oxide aerogel; Sodium-ion batteries; Conductive polymer; Red phosphorus; Sodium-ion batteries; Anode materials; Reduced graphene oxide aerogel
• ISSN: 1572-6657; 1873-2569
• DOI: 10.1016/j.jelechem.2024.118413

[Display omitted] •Conductive polymer coated RP encapsulated in rGO hydrogel was prepared.•Electronic conductivity of RP was greatly enhanced by conductive polymer.•rGO aerogel can effectively buffer the volume expansion of RP.•The coated RP can exhibit an excellent rate performance and cycling stability. Relying on the high theoretical capacity for sodium storage, red phosphorus (RP) has attracted tremendous attention. However, its utilization is confronted with numerous limitations, such as substantial volume expansion and inferior conductivity. Herein, a RP anode (P/PPy@rGO) coated by conductive polypyrrole (PPy) was encapsulated in a spatially self-assembled reduced graphene oxide (rGO) aerogel by electrostatic interaction. The coating of PPy can not only enhance the conductivity of RP effectively, but also facilitate the connection between RP and rGO. Moreover, the rGO aerogel can accommodate the volume expansion of RP. Benefited from this unique structure, the P/PPy@rGO electrode can exhibit an enhanced rate performance (619 mAh/g at 5.2A g−1) and excellent cycling stability with a capacity retention of 89.5 % after 100 cycles. This work would contribute to the suitable design of phosphorus-based anode for sodium storage.