CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
Utilizing ion leaching effects for achieving high oxygen-evolving performance on hybrid nanocomposite with self-optimized behaviors
Guan, DQ; Ryu, H; Hu, ZW; Zhou, J; Dong, CL; Huang, YC; Zhang, KF; Zhong, YJ; Komarek, AC; Zhu, M; Wu, XH; Pao, CW; Chang, CK; Lin, HJ; Chen, CT; Zhou, W; Shao, ZP
2020
Source PublicationNATURE COMMUNICATIONS
ISSN2041-1723
Volume11Issue:1Pages:-
Subtype期刊论文
AbstractIon leaching from pure-phase oxygen-evolving electrocatalysts generally exists, leading to the collapse and loss of catalyst crystalline matrix. Here, different from previous design methodologies of pure-phase perovskites, we introduce soluble BaCl2 and SrCl2 into perovskites through a self-assembly process aimed at simultaneously tuning dual cation/anion leaching effects and optimizing ion match in perovskites to protect the crystalline matrix. As a proofof-concept, self-assembled hybrid Ba0.35Sr0.65Co0.8Fe0.2O3-delta (BSCF) nanocomposite (with BaCl2 and SrCl2) exhibits the low overpotential of 260 mV at 10 mA cm(-2) in 0.1M KOH. Multiple operando spectroscopic techniques reveal that the pre-leaching of soluble compounds lowers the difference of interfacial ion concentrations and thus endows the host phase in hybrid BSCF with abundant time and space to form stable edge/face-sharing surface structures. These self-optimized crystalline structures show stable lattice oxygen active sites and short reaction pathways between Co-Co/Fe metal active sites to trigger favorable adsorption of OH- species.
KeywordEVOLUTION REACTION METAL-OXIDES SPIN-STATE ELECTROCATALYSTS RECONSTRUCTION PEROVSKITES CATALYSIS
DOI10.1038/s41467-020-17108-5
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/33262
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Nanjing Tech Univ, Coll Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 211800, Peoples R China
2.Max Planck Inst Chem Phys Solids, Nothnitzer Str 40, D-01187 Dresden, Germany
3.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China
4.Tamkang Univ, Dept Phys, 151 Yingzhuan Rd, Taipei 25137, Taiwan
5.Curtin Univ, WA Sch Mines Minerals Energy & Chem Engn WASM MEC, Perth, WA 6845, Australia
6.Natl Synchrotron Radiat Res Ctr, 101 Hsin Ann Rd, Hsinchu 30076, Taiwan
Recommended Citation
GB/T 7714
Guan, DQ,Ryu, H,Hu, ZW,et al. Utilizing ion leaching effects for achieving high oxygen-evolving performance on hybrid nanocomposite with self-optimized behaviors[J]. NATURE COMMUNICATIONS,2020,11(1):-.
APA Guan, DQ.,Ryu, H.,Hu, ZW.,Zhou, J.,Dong, CL.,...&Shao, ZP.(2020).Utilizing ion leaching effects for achieving high oxygen-evolving performance on hybrid nanocomposite with self-optimized behaviors.NATURE COMMUNICATIONS,11(1),-.
MLA Guan, DQ,et al."Utilizing ion leaching effects for achieving high oxygen-evolving performance on hybrid nanocomposite with self-optimized behaviors".NATURE COMMUNICATIONS 11.1(2020):-.
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