Combined Corner-Sharing and Edge-Sharing Networks in Hybrid Nanocomposite with Unusual Lattice-Oxygen Activation for Efficient Water Oxidation

Haijuan Zhang; Yongxin Gao; Hengyue XuDaqin GuanZhiwei HuChao JingYuchen ShaYuxing GuYu-Cheng HuangYu-Chung ChangChi-Wen PaoXiaomin XuJyh-Fu LeeYi-Ying ChinHong-Ji LinChien-Te ChenYuhui ChenYoumin GuoMeng NiWei ZhouZongping Shao

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Combined Corner-Sharing and Edge-Sharing Networks in Hybrid Nanocomposite with Unusual Lattice-Oxygen Activation for Efficient Water Oxidation

机译：Combined Corner-Sharing and Edge-Sharing Networks in Hybrid Nanocomposite with Unusual Lattice-Oxygen Activation for Efficient Water Oxidation

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Corner-sharing and edge-sharing networks are the two most important material genomes. Inspired by the efficient electron transport capacity of corner-sharing structures and the low steric hindrance of edge-sharing units, an attempt is made to exert both merits by combining these two networks. Here, a unique self-assembled hybrid SrCo_(0.5)Fe_(0.5)O_(3-δ) nanorod composed of a corner-sharing SrCo_(0.5)Fe_(0.5)O_(3-δ) phase and edge-sharing Co_3O_4 structure is synthesized through a Co-site enrichment method, which exhibits the low overpotentials of 310 and 290 mV at 10 mA cm~(-2) for oxygen-evolving reaction in 0.1 m and 1.0 m KOH, respectively. This efficiency is attributed to the high Co valence with strong Co-O covalence and the short distance between Co-Co/Fe metal active sites in hybrid nanorods, realizing a synergistic benefit. Combined multiple operando/ex situ characterizations and computational studies show that the edge-sharing units in hybrid nanorods can help facilitate the deprotonation step of lattice oxygen mechanism (LOM) while the corner-sharing motifs can accelerate the electron transport during LOM processes, triggering an unusual lattice-oxygen activation. This methodology of combining important material structural genomes can offer meaningful insights and guidance for various catalytic applications.

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《Advanced functional materials》 |2022年第45期|2207618.1-2207618.13|共13页
作者
Haijuan Zhang; Yongxin Gao; Hengyue XuDaqin GuanZhiwei HuChao JingYuchen ShaYuxing GuYu-Cheng HuangYu-Chung ChangChi-Wen PaoXiaomin XuJyh-Fu LeeYi-Ying ChinHong-Ji LinChien-Te ChenYuhui ChenYoumin GuoMeng NiWei ZhouZongping Shao;
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State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Nanjing 21800, P. R. China;

Institute of Biopharmaceutical and Health Engineering Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen 518055, P. R. China;

Department of Building and Real Estate The Hong Kong Polytechnic University Hung Hom, Kowloon, Hong Kong 999077, P. R. ChinaMax-Planck-Institute for Chemical Physics of Solids Noethnitzer Str. 40, 01187 Dresden, GermanyDepartment of Hydrogen Technique Key Laboratory of Interfacial Physics and Technology Chinese Academy of Sciences Shanghai Institute of Applied Physics Jialuo Road 2019, Shanghai 201800, P. R. ChinaDepartment of Physics Tamkang University 151 Yingzhuan Rd., New Taipei City 25137, TaiwanNational Synchrotron Radiation Research Center 101 Hsin-Ann Road, Hsinchu 30076, TaiwanWA School of Mines Minerals Energy and Chemical Engineering Curtin University Perth, Western Australia 6845, AustraliaDepartment of Physics National Chung Cheng University 168, Section 1, University Road, Min-Hsiung, Chiayi 62102, TaiwanSchool of Materials Science and Technology Anhui University No. 111 Jiulong Road, Hefei 230601, P. R. ChinaState Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Nanjing 21800, P. R. China,WA School of Mines Minerals Energy and Chemical Engineering Curtin University Perth, Western Australia 6845,;

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corner-sharing networks; edge-sharing networks; hybrid nanocomposites; synergistic benefits; unusual lattice-oxygen mechanism;

Combined Corner-Sharing and Edge-Sharing Networks in Hybrid Nanocomposite with Unusual Lattice-Oxygen Activation for Efficient Water Oxidation

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