电池(电)
材料科学
碳纤维
阴极
电极
化学工程
兴奋剂
电化学
热解
纳米技术
复合材料
化学
电气工程
光电子学
功率(物理)
工程类
物理
复合数
物理化学
量子力学
作者
Longsheng Huang,Wenjie Zang,Yuanyuan Ma,Chenyu Zhu,Dongming Cai,Hao Chen,Jinzhi Zhang,Hong Yu,Qichao Zou,Limin Wu,Cao Guan
标识
DOI:10.1016/j.cej.2021.129973
摘要
The demand for flexible energy storage systems with low-cost and high durability increases rapidly with the development of flexible electronics. Wherein, flexible metal-air batteries have been considered as potential candidates to meet the requirements of future power sources. However, the oxygen reduction reaction (ORR) performance at the air cathode is often restricted by inherent electrocatalytic activity and electrode configuration. To solve these problems, herein a novel approach utilizing the gas diffusion and subsequent pyrolysis process based on ferrocene and zinc-based metal–organic framework (Zn-MOF) is proposed to prepare nitrogen-doped carbon flakes modified with iron single atoms (Fe-SA) on carbon cloth (CC) as a self-supporting electrode ([email protected]) for the aluminum-air battery. Benefitting from the excellent cooperation between the inherent ORR activity of Fe-SA and the rapid ion/electron transport of nitrogen-doped carbon flakes on CC, the resulting [email protected] displays high ORR activity along with good flexibility and high durability. In a hydrogel-based solid-state aluminum-air battery, [email protected] cathode reveals an impressive open-circuit voltage of 2.1 V even at a bending state, and it also shows a stable discharge voltage of ≈1.5 V over 8 h at 1 mA cm−2. This study offers a promising method to construct self-supporting electrodes modified with single atoms for high-performance metal-air batteries.
科研通智能强力驱动
Strongly Powered by AbleSci AI