青岛科技大学  English 
陈英杰
赞  

教师拼音名称:chenyingjie

电子邮箱:

毕业院校:中国科学院海洋研究所

学科:

材料学

曾获荣誉:

2018-10-09 我最喜爱的老师

2019-09-13 校级优秀班主任

手机版

访问量:

最后更新时间:..

Design and synthesis of self-supporting FeCoNi- and N-doped carbon fibers/ nanotubes as oxygen bifunctional catalysts for solid-state flexible Zn-air batteries

关键字:ENERGY-CONVERSION; ELECTROCATALYST; REDUCTION; NANOSHEETS; EVOLUTION; FILM

摘要:Developing effective bifunctional electrocatalysts with efficient oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) capabilities is critical to advancing rechargeable zinc-air batteries. This study harnessed the properties of organic salts in polymer solutions via electrospinning to synthesize self-supporting flexible bifunctional electrocatalysts, termed FeCoNi flexible carbon nanofibers (FeCoNi FCNFs). These catalysts benefitted from the secondary growth of FeCoNi- and N-doped carbon nanotubes on fiber surfaces, generating numerous metal-nitrogen-carbon (M-N-C) ORR active sites and FeCoNi alloy-based OER active sites. At 10 mA/ cm2, FeCoNi FCNFs exhibited a half-wave potential of 0.92 V for ORR and 1.64 V for OER. Density functional theory calculations based on first principles demonstrated that FeCoNi FCNFs possessed superior bifunctional activity. Moreover, rechargeable liquid Zn-air batteries constructed with this catalyst achieved a high peak power density and exceptional cycling stability lasting over 630 h. Additionally, a solid-state wearable battery using this catalyst displayed outstanding cycle stability, continuously cycling for over 27 h. This research offers both insight and a fresh approach for designing efficient, cost-effective bifunctional solid-state or liquid zinc-air batteries.

卷号:479

期号:

是否译文:

崂山校区 - 山东省青岛市松岭路99号   
四方校区 - 山东省青岛市郑州路53号   
中德国际合作区(中德校区) - 山东省青岛市西海岸新区团结路3698号
高密校区 - 山东省高密市杏坛西街1号   
济南校区 - 山东省济南市文化东路80号©2015 青岛科技大学    
管理员邮箱:master@qust.edu.cn