Unveiling Corrosion Pathways of Sn Nanocrystals through High-Resolution Liquid Cell Electron Microscopy

被引：5

作者：

Peng, Xinxing ^{[1
]}

Shangguan, Junyi ^{[1
,2
]}

Zhang, Qiubo ^{[1
]}

Hauwiller, Matthew ^{[1
,3
]}

Yu, Haobo ^{[4
]}

Nie, Yifan ^{[1
]}

Bustillo, Karen C. ^{[5
]}

Alivisatos, A. Paul ^{[1
,2
,3
,6
]}

Asta, Mark ^{[1
,2
]}

Zheng, Haimei ^{[1
,2
]}

机构：

[1] Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[4] China Univ Petr, Coll New Energy & Mat, Beijing Key Lab Failure, Corros & Protect Oil Gas Facil Mat, Beijing 102249, Peoples R China

[5] Natl Ctr Electron Microscopy, Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA

[6] Univ Calif, Kavli Energy Nanosci Inst, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

来源：

NANO LETTERS | 2024年 / 24卷 / 04期

关键词：

liquid cell TEM; Sn nanocrystal; pitting corrosion; uniformcorrosion; IN-SITU; CHALLENGES;

D O I：

10.1021/acs.nanolett.3c03913

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Unveiling materials' corrosion pathways is significant for understanding the corrosion mechanisms and designing corrosion-resistant materials. Here, we investigate the corrosion behavior of Sn@Ni3Sn4 and Sn nanocrystals in an aqueous solution in real time by using high-resolution liquid cell transmission electron microscopy. Our direct observation reveals an unprecedented level of detail on the corrosion of Sn metal with/without a coating of Ni3Sn4 at the nanometric and atomic levels. The Sn@Ni3Sn4 nanocrystals exhibit "pitting corrosion", which is initiated at the defect sites in the Ni3Sn4 protective layer. The early stage isotropic etching transforms into facet-dependent etching, resulting in a cavity terminated with low-index facets. The Sn nanocrystals under fast etching kinetics show uniform corrosion, and smooth surfaces are obtained. Sn nanocrystals show "creeping-like" etching behavior and rough surfaces. This study provides critical insights into the impacts of coating, defects, and ion diffusion on corrosion kinetics and the resulting morphologies.

引用

页码：1168 / 1175

页数：8

共 50 条

[11] High-Resolution Electron Microscopy Investigations of Structure and Morphology of Cadmium Selenide Nanocrystals
Nedomolkina, A. A.
Gutakovskii, A. K.
RUSSIAN PHYSICS JOURNAL, 2018, 61 (03) : 509 - 515
[12] RESOLUTION IN HIGH-RESOLUTION ELECTRON-MICROSCOPY
OKEEFE, MA
ULTRAMICROSCOPY, 1992, 47 (1-3) : 282 - 297
[13] HIGH-RESOLUTION ELECTRON MICROSCOPY OF MUSCOVITE
BROWN, JL
RICH, CI
SCIENCE, 1968, 161 (3846) : 1135 - &
[14] HIGH-RESOLUTION ELECTRON-MICROSCOPY OF LIQUID-CRYSTALLINE POLYMERS
VOIGTMARTIN, IG
KRUG, H
VANDYCK, D
JOURNAL DE PHYSIQUE, 1990, 51 (20): : 2347 - 2371
[15] HIGH-RESOLUTION ELECTRON MICROSCOPY WITH SUPERCONDUCTING LENSES AT LIQUID HELIUM TEMPERATURES
FERNANDE.H
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1966, 56 (03) : 801 - &
[16] HIGH-RESOLUTION ELECTRON-MICROSCOPY
HASHIMOTO, H
ULTRAMICROSCOPY, 1984, 12 (1-2) : 90 - 90
[17] High-resolution electron microscopy of quasicrystals
Hiraga, K
ADVANCES IN IMAGING AND ELECTRON PHYSICS, VOL. 101, 1998, 101 : 37 - 98
[18] High-resolution electron microscopy of quasicrystal
Hiraga, K.
Proceedings of the Asia Pacific Physics Conference, 1988,
[19] HIGH-RESOLUTION ELECTRON-MICROSCOPY
COWLEY, JM
ANNUAL REVIEW OF PHYSICAL CHEMISTRY, 1987, 38 : 57 - 88
[20] HIGH-RESOLUTION ELECTRON-MICROSCOPY
SMITH, DJ
HELVETICA PHYSICA ACTA, 1983, 56 (1-3): : 463 - 477

← 1 2 3 4 5 →