典型文献
Ultrathin Metal Silicate Hydroxide Nanosheets with Moderate Metal-Oxygen Covalency Enables Efficient Oxygen Evolution
文献摘要：
Exploring efficient,cost-effective,and durable electrocatalysts for electrochemical oxygen evolution reaction(OER)is pivotal for the large-scale application of water electrolysis.Recent advance has demonstrated that the activity of electrocatalysts exhibits a strong dependence on the surface electronic structure.Herein,a series of ultrathin metal silicate hydroxide nanosheets(UMSHNs)M3Si2O5(OH)4(M=Fe,Co,and Ni)synthesized without surfactant are introduced as highly active OER electrocatalysts.Cobalt silicate hydroxide nanosheets show an optimal OER activity with overpotentials of 287 and 358 mV at 1 and 10 mA cm-2,respectively.Combining experimental and theoretical studies,it is found that the OER activity of UMSHNs is dominated by the metal-oxygen covalency(MOC).High OER activity can be achieved by having a moderate MOC as reflected by a σ*-orbital(eg)filling near unity and moderate[3d]/[2p]ratio.Moreover,the UMSHNs exhibit favorable chemical stability under oxidation potential.This contribution provides a scientific guidance for further development of active metal silicate hydroxide catalysts.
文献关键词：
中图分类号：
作者姓名：
Jiexin Zhu;Shikun Li;Zechao Zhuang;Shan Gao;Xufeng Hong;Xuelei Pan;Ruohan Yu;Liang Zhou;Lyudmila V.Moskaleva;Liqiang Mai
作者机构：
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan Hubei 430070,China;Institute of Applied and Physical Chemistry and Center for Environmental Research and Sustainable Technology,University of Bremen,Bremen 28359,Germany;Department of Chemistry,University of the Free State,PO Box 339,Bloemfontein 9300,South Africa;Collage of Chemistry&Chemical Engineering,Anhui University,Anhui 230000,China;Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory,Xianhu Hydrogen Valley,Foshan Guangdong 528200,China
文献出处：
引用格式：
[1]Jiexin Zhu;Shikun Li;Zechao Zhuang;Shan Gao;Xufeng Hong;Xuelei Pan;Ruohan Yu;Liang Zhou;Lyudmila V.Moskaleva;Liqiang Mai-.Ultrathin Metal Silicate Hydroxide Nanosheets with Moderate Metal-Oxygen Covalency Enables Efficient Oxygen Evolution)[J].能源与环境材料（英文）,2022(01):231-237
A类：
Covalency,UMSHNs,M3Si2O5,covalency
B类：
Ultrathin,Metal,Silicate,Hydroxide,Nanosheets,Moderate,Oxygen,Enables,Efficient,Evolution,Exploring,efficient,cost,effective,durable,electrocatalysts,electrochemical,oxygen,evolution,reaction,OER,pivotal,large,scale,application,water,electrolysis,Recent,advance,has,demonstrated,that,activity,exhibits,strong,dependence,surface,electronic,structure,Herein,series,ultrathin,metal,silicate,hydroxide,nanosheets,synthesized,without,surfactant,are,introduced,highly,active,Cobalt,show,optimal,overpotentials,mV,mA,respectively,Combining,experimental,theoretical,studies,found,dominated,by,MOC,High,can,be,achieved,having,moderate,reflected,orbital,eg,filling,near,unity,3d,2p,ratio,Moreover,favorable,stability,under,oxidation,This,contribution,provides,scientific,guidance,further,development
AB值：
0.61343
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