Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/132182
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Revealing the origin of improved reversible capacity of dual-shell bismuth boxes anode for potassium-Ion batteries |
Author: | Xie, F. Zhang, L. Chen, B. Chao, D. Gu, Q. Johannessen, B. Jaroniec, M. Qiao, S.Z. |
Citation: | MATTER, 2019; 1(6):1681-1693 |
Publisher: | Elsevier |
Issue Date: | 2019 |
ISSN: | 2590-2393 2590-2385 |
Statement of Responsibility: | Fangxi Xie, Lei Zhang, Biao Chen, Dongliang Chao, Qinfen Gu, Bernt Johannessen, Mietek Jaroniec, and Shi-Zhang Qiao |
Abstract: | Nanostructured alloy anodes have been successfully used in several kinds of rocking-chair batteries. However, a full picture of the origin of their improved reversible capacity remains elusive. Here, we combine operando synchrotron-based X-ray powder diffraction and ex situ X-ray absorption near-edge structure spectroscopy to study the double-shell structured bismuth boxes as anodes in potassium-ion batteries to reveal the origin of their improved capacity. The nanostructured bismuth anode offers an enhanced capability to tolerate the volume expansion under a low current density of 0.2 C, resulting in a more complete alloy reaction. Additionally, under a high current density of 2 C, nanostructured bismuth anode with larger surface area offers more sites to electrochemically alloy with potassium and results in a lower average oxidation state of bismuth. These findings offer guidance for the rational design and engineering of electrode materials according to the current density for rocking-chair batteries. |
Rights: | © 2019 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
DOI: | 10.1016/j.matt.2019.07.006 |
Grant ID: | http://purl.org/au-research/grants/arc/DP160104866 http://purl.org/au-research/grants/arc/DP170104464 http://purl.org/au-research/grants/arc/LP160100927 http://purl.org/au-research/grants/arc/DE150101234 http://purl.org/au-research/grants/arc/FL170100154 |
Published version: | http://dx.doi.org/10.1016/j.matt.2019.07.006 |
Appears in Collections: | Chemical Engineering publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
hdl_132182.pdf | Published Version | 2.44 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.