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Strain-Induced Corrosion Kinetics at Nanoscale Revealed in Liquid: Enabling Control of Corrosion Dynamics of Electrocatalysis

42 Pages Posted: 3 Jan 2020 Publication Status: Published

See all articles by Fenglei Shi

Fenglei Shi

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites

Wenpei Gao

University of California, Irvine, Henry Samueli School of Engineering, Department of Chemical Engineering and Materials Science

Hao Shan

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites

Fan Li

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites

Yalin Xiong

Zhejiang University, Faculty of Engineering, School of Materials Science and Engineering, State Key Laboratory of Silicon Materials

Jiaheng Peng

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites

Qian Xiang

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites

Wenlong Chen

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites

Peng Tao

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites

Chengyi Song

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites

Wen Shang

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites

Tao Deng

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites

Hong Zhu

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites

Hui Zhang

Zhejiang University, Faculty of Engineering, School of Materials Science and Engineering, State Key Laboratory of Silicon Materials

Deren Yang

Zhejiang University, Faculty of Engineering, School of Materials Science and Engineering, State Key Laboratory of Silicon Materials

Xiaoqing Pan

University of California, Irvine - Department of Materials Science and Engineering; University of California, Irvine - Department of Physics and Astronomy; University of California, Irvine - Irvine Materials Research Institute (IMRI)

Jianbo Wu

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites; University of California, Irvine, Henry Samueli School of Engineering, Department of Chemical Engineering and Materials Science; University of California, Irvine - Department of Physics and Astronomy

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Abstract

SummaryCorrosion at the nanoscale is vital for the stability of nanoparticles. Understanding the corrosion mechanism can offer insights on how to design more stable nanoparticles during electrocatalysis, such as oxygen reduction reaction (ORR). Here, using a liquid cell (LC) transmission electron microscopy (TEM) technique, we study the corrosion process of palladium@platinum (Pd@Pt) core-shell octahedra at real time. The results revealed that the nanoscale corrosion kinetics was determined synergistically by both the quasi-static factor, local strain, and dynamic factor, local curvature. Specifically, in locations with tensile strain and high local curvature, the etching process is much faster than other places. Density functional theory (DFT) calculation suggested that the dissolution potential of the nanoscale Pd nanocrystal is decreased by the increasement of the strain and meanwhile the calculation indicated that the nanoscale surface Pd atoms trended to be corroded more easily under tensile strain than that under compressive strain. Through the investigation of the nanoscale corrosion mechanisms above, we subsequently designed and synthesized a nanoparticle with smaller strain, which showed higher durability both in in-situ liquid cell and ex-situ ORR stability test.

Keywords: strain, corrosion dynamics, in situ liquid TEM, nanoscale, Electrocatalysts

Suggested Citation

Shi, Fenglei and Gao, Wenpei and Shan, Hao and Li, Fan and Xiong, Yalin and Peng, Jiaheng and Xiang, Qian and Chen, Wenlong and Tao, Peng and Song, Chengyi and Shang, Wen and Deng, Tao and Zhu, Hong and Zhang, Hui and Yang, Deren and Pan, Xiaoqing and Wu, Jianbo, Strain-Induced Corrosion Kinetics at Nanoscale Revealed in Liquid: Enabling Control of Corrosion Dynamics of Electrocatalysis (December 24, 2019). Available at SSRN: https://ssrn.com/abstract=3509904 or http://dx.doi.org/10.2139/ssrn.3509904
This is a paper under consideration at Cell Press and has not been peer-reviewed.

Fenglei Shi

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites

Shanghai 200030, Shanghai 200052
China

Wenpei Gao

University of California, Irvine, Henry Samueli School of Engineering, Department of Chemical Engineering and Materials Science

916 Engineering Tower
Irvine, CA 92697-2575
United States

Hao Shan

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites ( email )

Shanghai 200030, Shanghai 200052
China

Fan Li

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites ( email )

Shanghai 200030, Shanghai 200052
China

Yalin Xiong

Zhejiang University, Faculty of Engineering, School of Materials Science and Engineering, State Key Laboratory of Silicon Materials ( email )

38 Zheda Road
Hangzhou, Zhejiang 310058
China

Jiaheng Peng

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites ( email )

Shanghai 200030, Shanghai 200052
China

Qian Xiang

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites

Shanghai 200030, Shanghai 200052
China

Wenlong Chen

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites

Shanghai 200030, Shanghai 200052
China

Peng Tao

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites

Shanghai 200030, Shanghai 200052
China

Chengyi Song

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites ( email )

Shanghai 200030, Shanghai 200052
China

Wen Shang

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites

Shanghai 200030, Shanghai 200052
China

Tao Deng

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites ( email )

Shanghai 200030, Shanghai 200052
China

Hong Zhu

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites ( email )

Shanghai 200030, Shanghai 200052
China

Hui Zhang

Zhejiang University, Faculty of Engineering, School of Materials Science and Engineering, State Key Laboratory of Silicon Materials

38 Zheda Road
Hangzhou, Zhejiang 310058
China

Deren Yang

Zhejiang University, Faculty of Engineering, School of Materials Science and Engineering, State Key Laboratory of Silicon Materials

38 Zheda Road
Hangzhou, Zhejiang 310058
China

Xiaoqing Pan

University of California, Irvine - Department of Materials Science and Engineering

P.O. Box 19556
Irvine, CA 62697-3125
United States

University of California, Irvine - Department of Physics and Astronomy

P.O. Box 19556
Irvine, CA 62697-3125
United States

University of California, Irvine - Irvine Materials Research Institute (IMRI)

P.O. Box 19556
Irvine, CA 62697-3125
United States

Jianbo Wu (Contact Author)

Shanghai Jiao Tong University (SJTU), School of Materials Science and Engineering, State Key Laboratory of Metal Matrix Composites ( email )

Shanghai 200030, Shanghai 200052
China

University of California, Irvine, Henry Samueli School of Engineering, Department of Chemical Engineering and Materials Science ( email )

916 Engineering Tower
Irvine, CA 92697-2575
United States

University of California, Irvine - Department of Physics and Astronomy ( email )

P.O. Box 19556
Irvine, CA 62697-3125
United States

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