Flexible and wearable all-solid-state Al-air battery based on iron carbide encapsulated in electrospun porous carbon nanofibers

• Main Authors: Ma, Yuanyuan, Sumboja, Afriyanti, Zang, Wenjie, Yin, Shuoyan, Wang, Suxi, Pennycook, Stephen J., Kou, Zongkui, Liu, Zhaolin, Li, Xu, Wang, John
• Other Authors: School of Materials Science and Engineering
• Format: Article
• Language: English
• Published: 2021
• Subjects: Engineering::Materials; Carbon Nanofibers; Iron Carbide
• Online Access: https://hdl.handle.net/10356/151239
• Institution: Nanyang Technological University

In this work, electrospinning N-doped carbon nanofibers containing iron carbide (Fe₃C@N-CFs) are synthesized and employed as the cathode in the flexible Al-air battery. Benefiting from the excellent catalytic activity of the iron carbide which is uniformly encapsulated in the N-doped carbon matrix, as well as the large specific surface area of the cross-linked network nanostructure, the as-prepared Fe₃C@N-CFs show outstanding catalytic activity and stability toward oxygen reduction reaction. The as-fabricated all-solid-state Al-air batteries with Fe₃C@N-CF catalyst show a stable discharge voltage (1.61 V) for 8 h, giving a capacity of 1287.3 mA h g⁻¹.