@article{Sui2022, 
author = {Rui Sui and Xuejiang Zhang and Xingdong Wang and Xinyu Wang and Jiajing Pei and Yufeng Zhang and Xuerui Liu and Wenxing Chen and Wei Zhu and Zhongbin Zhuang},
title = {Silver based single atom catalyst with heteroatom coordination environment as high performance oxygen reduction reaction catalyst},
year = {2022},
journal = {Nano Research},
volume = {15},
number = {9},
pages = {7968-7975},
keywords = {Ag, single-atom, heteroatom coordination, oxygen reduction, zinc-air battery},
url = {https://www.sciopen.com/article/10.1007/s12274-022-4499-8},
doi = {10.1007/s12274-022-4499-8},
abstract = {Ag is a potential low-cost oxygen reduction reaction (ORR) catalyst in alkaline condition, which is important for the zinc-air batteries. Here, we report that an Ag based single atom catalyst with heteroatom coordination. Ag1-h-NPClSC, has been synthesized and shown much improved performance towards ORR by manipulating the coordination environment of the Ag center. It shows a high half wave potential (0.896 V) and a high turnover frequency (TOF) (5.9 s−1) at 0.85 V, which are higher than the previously reported Ag based catalysts and commercial Pt/C. A zinc-air battery with high peak power density of 270 mW·cm−2 is fabricated by using the Ag1-h-NPClSC as air electrode. The high performance is attributed to (1) the hollow structure providing good mass transfer; (2) the single atom metal center structure providing high utility of the Ag; (3) heteroatom coordination environment providing the adjusted binding to the ORR intermediates. Density functional theory (DFT) calculations show that the energy barrier for the formation of OOH*, which is considered as the rate determine step for ORR on Ag nanoparticles, is lowered on Ag1-h-NPClSC, thus improving the ORR activity. This work demonstrates that the well manipulated Ag based single atom catalysts are promising in electrocatalysis.}
}