Encaging Co nanoparticle in atomic CoN4-dispersed graphite nanopocket evokes high oxygen reduction activity for flexible Zn-air battery
學年 112
學期 1
出版（發表）日期 2024-01-30
作品名稱 Encaging Co nanoparticle in atomic CoN4-dispersed graphite nanopocket evokes high oxygen reduction activity for flexible Zn-air battery
作品名稱（其他語言）
著者 Wang, Hsiao-tsu; Chen, Kuan-hung; Lin, Wei-xuan
單位
出版者
著錄名稱、卷期、頁數 Applied Catalysis B: Environment and Energy 347(15),　123792
摘要 Rational design of oxygen reduction reaction (ORR) electrocatalysts with indestructible active sites for high-performance Zn-air batteries (ZABs) remains a significant challenge. Herein, we achieve an innovative active site design by encaging Co nanoparticles within the Co−N4 atomic sites-dispersed graphite nanopocket (CoSAs-NPs/NC), leading to outstanding alkaline ORR activity and stability, and consequently ultra-high power density of 193.8 mW cm–2 and specific capacity of 819.1 mAh gZn–1 at 10 mA cm–2 of a primary ZAB assembled, along with impressive power density of 73.4 mW cm–2 and charging/discharging stability up to 110 cycles of a flexible solid-state ZAB. Theoretical calculations unveil the enhanced ORR kinetics can be traced to the significantly optimized local electronic structure of Co−N4 sites with upshifted d-band center and reduced energy barrier of rate-limiting step by the encaged Co nanoparticle. This study showcases a creative conformational design for guiding the construction of valid synergy in hybridized metal/single-atom catalysts.
關鍵字
語言 en_US
ISSN 1873-3883
期刊性質 國外
收錄於 SCI SSCI
產學合作
通訊作者
審稿制度 否
國別 TWN
公開徵稿
出版型式 ,電子版
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機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/125225 )