Synergistic effect between Co single atoms and Pt nanoparticles for efficient alkaline hydrogen evolution  

作　　者：Chengyong Shu Jingwen Cao Zhuofan Gan Peixi Qiu Zhixu Chen Lian Guanwu Zhongxin Chen Chengwei Deng Wei Tang 

机构地区：[1]School of Chemical Engineering and Technology,Xi’an Jiaotong University,Xi’an 710049,People’s Republic of China [2]School of Science and Engineering,The Chinese University of Hong Kong,Shenzhen,Guangdong 518172,People’s Republic of China [3]State Key Laboratory of Space Power-Sources Technology,Shanghai Institute of Space Power Sources,Shanghai 200245,People’s Republic of China

出　　处：《Materials Futures》2024年第3期111-120,共10页材料展望（英文）

基　　金：support from the National Natural Science Foundation of China(22379120,22350410375);the University Development Fund,Research Start-up Fund(UDF01002976)from the Chinese University of Hong Kong(Shenzhen);the Higher Education Institution Academic Discipline Innovation and Talent Introduction Plan(111 Plan)(No.B23025);the Shenzhen Science and Technology Program(JCYJ20230807114302005);the China Postdoctoral Science Foundation(2020M673408)。

摘　　要：In the pursuit of sustainable energy solutions,the efficiency of the hydrogen evolution reaction(HER)in alkaline conditions has been a significant challenge,primarily due to the sluggish dissociation of water molecules on platinum(Pt)catalysts.Addressing this critical issue,our study introduces an innovative Pt-Co@NCS catalyst.This catalyst synergistically combines Pt nanoparticles with Co single atoms on a nitrogen-doped carbon scaffold,overcoming the traditional bottleneck of slow water dissociation.Its unique porous concave structure and nitrogen-enriched surface not only provide abundant anchoring sites for Co atoms but also create a conducive hydrophilic environment around the Pt particles.This design leads to a drastic improvement in the water dissociation process,as demonstrated by CO stripping and deuterium labeling experiments.Achieving an outstanding current density of 162.8 mA cm^(−2) at−0.1 V versus RHE,a Tafel slope of 26.2 mV dec^(−1),and a superior nominal mass activity of 15.75 mAμgPt^(−1),the Pt-Co@NCS catalyst represents a significant step forward in enhancing alkaline HER efficiency,indicating promising advancements in the field.

关 键 词：synergistic catalysis single atom catalysts alkaline water splitting flow electrolyser hydrogen evolution 

分 类 号：TB383[一般工业技术—材料科学与工程]