In Situ Self-Reconstructed Nanoheterostructure Catalysts for Promoting Oxygen Reduction Reaction

Xiaodan Yu; Zhenhua Wang; Rongzheng Ren; Minjian Ma; Chunming Xu; Jinshuo Qiao; Wang Sun; Kening Sun

doi:10.1021/acsenergylett.2c01249

In Situ Self-Reconstructed Nanoheterostructure Catalysts for Promoting Oxygen Reduction Reaction

Xiaodan Yu, Zhenhua Wang^*, Rongzheng Ren, Minjian Ma, Chunming Xu, Jinshuo Qiao, Wang Sun, Kening Sun^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

Constructing heterostructures to obtain catalysts with high electrocatalytic activity is an essential but challenging research direction. Herein, a new composite catalyst, modified with nanospinel on the perovskite skeleton, Pr_0.4Sr_0.6Co_0.2Fe_0.8O₃-_δ-(Co_xFe_1-x)₃O₄(sp-PSFC), is obtained using intelligent in situ compounding. Irreversibly exsolved nanoparticles are uniformly embedded on the surface of Pr_0.4Sr_0.6Co_0.2Fe_0.8O₃(PSFC) in the form of a nonshell layer to produce a nanoscale heterojunction. The structure of PSFC is fine-tuned through the exsolution of nanoparticles, resulting in B-site ion vacancies and oxygen vacancies, which promote the adsorption and migration of oxygen species. The construction of a heterointerface effectively reduces the oxygen adsorption energy of the cathode, leading to the formation of multiple reaction paths for the migration of oxygen species. This method of constructing a heterointerface by in situ irreversible exsolution overcomes the deficiency of single-phase reaction kinetics and provides a strategy for optimizing catalyst activity.

Original language	English
Pages (from-to)	2961-2969
Number of pages	9
Journal	ACS Energy Letters
Volume	7
Issue number	9
DOIs	https://doi.org/10.1021/acsenergylett.2c01249
Publication status	Published - 9 Sept 2022

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1021/acsenergylett.2c01249

Cite this

@article{afca80c0afcd4156986cf833af4349d9,

title = "In Situ Self-Reconstructed Nanoheterostructure Catalysts for Promoting Oxygen Reduction Reaction",

abstract = "Constructing heterostructures to obtain catalysts with high electrocatalytic activity is an essential but challenging research direction. Herein, a new composite catalyst, modified with nanospinel on the perovskite skeleton, Pr0.4Sr0.6Co0.2Fe0.8O3-δ-(CoxFe1-x)3O4(sp-PSFC), is obtained using intelligent in situ compounding. Irreversibly exsolved nanoparticles are uniformly embedded on the surface of Pr0.4Sr0.6Co0.2Fe0.8O3(PSFC) in the form of a nonshell layer to produce a nanoscale heterojunction. The structure of PSFC is fine-tuned through the exsolution of nanoparticles, resulting in B-site ion vacancies and oxygen vacancies, which promote the adsorption and migration of oxygen species. The construction of a heterointerface effectively reduces the oxygen adsorption energy of the cathode, leading to the formation of multiple reaction paths for the migration of oxygen species. This method of constructing a heterointerface by in situ irreversible exsolution overcomes the deficiency of single-phase reaction kinetics and provides a strategy for optimizing catalyst activity.",

author = "Xiaodan Yu and Zhenhua Wang and Rongzheng Ren and Minjian Ma and Chunming Xu and Jinshuo Qiao and Wang Sun and Kening Sun",

year = "2022",

month = sep,

day = "9",

doi = "10.1021/acsenergylett.2c01249",

language = "English",

volume = "7",

pages = "2961--2969",

journal = "ACS Energy Letters",

issn = "2380-8195",

publisher = "American Chemical Society",

number = "9",

}

TY - JOUR

T1 - In Situ Self-Reconstructed Nanoheterostructure Catalysts for Promoting Oxygen Reduction Reaction

AU - Yu, Xiaodan

AU - Wang, Zhenhua

AU - Ren, Rongzheng

AU - Ma, Minjian

AU - Xu, Chunming

AU - Qiao, Jinshuo

AU - Sun, Wang

AU - Sun, Kening

PY - 2022/9/9

Y1 - 2022/9/9

N2 - Constructing heterostructures to obtain catalysts with high electrocatalytic activity is an essential but challenging research direction. Herein, a new composite catalyst, modified with nanospinel on the perovskite skeleton, Pr0.4Sr0.6Co0.2Fe0.8O3-δ-(CoxFe1-x)3O4(sp-PSFC), is obtained using intelligent in situ compounding. Irreversibly exsolved nanoparticles are uniformly embedded on the surface of Pr0.4Sr0.6Co0.2Fe0.8O3(PSFC) in the form of a nonshell layer to produce a nanoscale heterojunction. The structure of PSFC is fine-tuned through the exsolution of nanoparticles, resulting in B-site ion vacancies and oxygen vacancies, which promote the adsorption and migration of oxygen species. The construction of a heterointerface effectively reduces the oxygen adsorption energy of the cathode, leading to the formation of multiple reaction paths for the migration of oxygen species. This method of constructing a heterointerface by in situ irreversible exsolution overcomes the deficiency of single-phase reaction kinetics and provides a strategy for optimizing catalyst activity.

AB - Constructing heterostructures to obtain catalysts with high electrocatalytic activity is an essential but challenging research direction. Herein, a new composite catalyst, modified with nanospinel on the perovskite skeleton, Pr0.4Sr0.6Co0.2Fe0.8O3-δ-(CoxFe1-x)3O4(sp-PSFC), is obtained using intelligent in situ compounding. Irreversibly exsolved nanoparticles are uniformly embedded on the surface of Pr0.4Sr0.6Co0.2Fe0.8O3(PSFC) in the form of a nonshell layer to produce a nanoscale heterojunction. The structure of PSFC is fine-tuned through the exsolution of nanoparticles, resulting in B-site ion vacancies and oxygen vacancies, which promote the adsorption and migration of oxygen species. The construction of a heterointerface effectively reduces the oxygen adsorption energy of the cathode, leading to the formation of multiple reaction paths for the migration of oxygen species. This method of constructing a heterointerface by in situ irreversible exsolution overcomes the deficiency of single-phase reaction kinetics and provides a strategy for optimizing catalyst activity.

UR - http://www.scopus.com/inward/record.url?scp=85136647656&partnerID=8YFLogxK

U2 - 10.1021/acsenergylett.2c01249

DO - 10.1021/acsenergylett.2c01249

M3 - Article

AN - SCOPUS:85136647656

SN - 2380-8195

VL - 7

SP - 2961

EP - 2969

JO - ACS Energy Letters

JF - ACS Energy Letters

IS - 9

ER -

In Situ Self-Reconstructed Nanoheterostructure Catalysts for Promoting Oxygen Reduction Reaction

Abstract

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this