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Title: Revealing Three-Dimensional Morphology in Nanoporous Gold Using Three-Dimensional X-Ray Fresnel Coherent Diffractive Imaging Tomography

Abstract

Nanoporous metals fabricated by dealloying have a unique bi-continuous, sponge-like porous structure with ultra-high surface area. The unique properties of these materials, especially nanoporous gold, have numerous potential applications in sensors and actuators and in energy-related applications such as catalytic materials, super-capacitors, and battery supports. The degree of porosity and size of the metal ligaments are critical parameters that determine many properties and thus govern the functionalities of nanoporous metals in many applications including energy storage and conversion. Additionally, we used Fresnel coherent diffractive imaging combined with tomographic reconstruction to quantify the nanoscale three-dimensional spatial distribution and homogeneity of the porosity and ligament size within a bulk sample of nanoporous gold. The average porosity and its standard deviation along the axial direction through the sample were determined, as well as the characteristic feature size and its standard deviation. The result shows that free corrosion is an effective way to create homogeneous nanoporous metals with sample sizes on the order of 1 µm.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [4];  [7]
  1. Stony Brook Univ., NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
  2. Pohang Accelerator Lab., Pohang (South Korea)
  3. Sigray, Concord, CA (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
  5. Stony Brook Univ., NY (United States)
  6. Cornell Univ., Ithaca, NY (United States). Cornell Center for Materials Research (CCMR)
  7. Lund Univ. (Sweden). MAX IV Lab.
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
OSTI Identifier:
1717901
Report Number(s):
BNL-220635-2020-JAAM
Journal ID: ISSN 2381-6872
Grant/Contract Number:  
SC0012704; AC02-06CH11357; DMR-1752839
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Electrochemical Energy Conversion and Storage
Additional Journal Information:
Journal Volume: 17; Journal Issue: 4; Journal ID: ISSN 2381-6872
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; dealloying; FCDI; tomography; nanoporous metal; NPG; imaging; metals; porosity; x-rays; image segmentation; capacitors; corrosion; absorption; actuators; nanoscale phenomena; sensors

Citation Formats

Chen-Wiegart, Yu-Chen Karen, Kim, SangSoo, Vine, David, Xiao, Xianghui, Zhao, Chonghang, Pfeifer, Mark A., Williams, Garth J., and McNulty, Ian. Revealing Three-Dimensional Morphology in Nanoporous Gold Using Three-Dimensional X-Ray Fresnel Coherent Diffractive Imaging Tomography. United States: N. p., 2020. Web. doi:10.1115/1.4046414.
Chen-Wiegart, Yu-Chen Karen, Kim, SangSoo, Vine, David, Xiao, Xianghui, Zhao, Chonghang, Pfeifer, Mark A., Williams, Garth J., & McNulty, Ian. Revealing Three-Dimensional Morphology in Nanoporous Gold Using Three-Dimensional X-Ray Fresnel Coherent Diffractive Imaging Tomography. United States. doi:10.1115/1.4046414.
Chen-Wiegart, Yu-Chen Karen, Kim, SangSoo, Vine, David, Xiao, Xianghui, Zhao, Chonghang, Pfeifer, Mark A., Williams, Garth J., and McNulty, Ian. Wed . "Revealing Three-Dimensional Morphology in Nanoporous Gold Using Three-Dimensional X-Ray Fresnel Coherent Diffractive Imaging Tomography". United States. doi:10.1115/1.4046414.
@article{osti_1717901,
title = {Revealing Three-Dimensional Morphology in Nanoporous Gold Using Three-Dimensional X-Ray Fresnel Coherent Diffractive Imaging Tomography},
author = {Chen-Wiegart, Yu-Chen Karen and Kim, SangSoo and Vine, David and Xiao, Xianghui and Zhao, Chonghang and Pfeifer, Mark A. and Williams, Garth J. and McNulty, Ian},
abstractNote = {Nanoporous metals fabricated by dealloying have a unique bi-continuous, sponge-like porous structure with ultra-high surface area. The unique properties of these materials, especially nanoporous gold, have numerous potential applications in sensors and actuators and in energy-related applications such as catalytic materials, super-capacitors, and battery supports. The degree of porosity and size of the metal ligaments are critical parameters that determine many properties and thus govern the functionalities of nanoporous metals in many applications including energy storage and conversion. Additionally, we used Fresnel coherent diffractive imaging combined with tomographic reconstruction to quantify the nanoscale three-dimensional spatial distribution and homogeneity of the porosity and ligament size within a bulk sample of nanoporous gold. The average porosity and its standard deviation along the axial direction through the sample were determined, as well as the characteristic feature size and its standard deviation. The result shows that free corrosion is an effective way to create homogeneous nanoporous metals with sample sizes on the order of 1 µm.},
doi = {10.1115/1.4046414},
journal = {Journal of Electrochemical Energy Conversion and Storage},
number = 4,
volume = 17,
place = {United States},
year = {2020},
month = {4}
}

Journal Article:
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