Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/117708
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Multiscale structural engineering of Ni-doped CoO nanosheets for zinc-air batteries with high power density |
Author: | Li, Y.-J. Cui, L. Da, P.-F. Qiu, K.-W. Qin, W.-J. Hu, W.-B. Du, X.-W. Davey, K. Ling, T. Qiao, S.-Z. |
Citation: | Advanced Materials, 2018; 30(46):1804653-1-1804653-8 |
Publisher: | Wiley |
Issue Date: | 2018 |
ISSN: | 0935-9648 1521-4095 |
Statement of Responsibility: | Yue-Jiao Li, Lan Cui, Peng-Fei Da, Kang-Wen Qiu, Wen-Jing Qin, Wen-Bin Hu, Xi-Wen Du, Kenneth Davey, Tao Ling, and Shi-Zhang Qiao |
Abstract: | Zinc-air batteries offer a possible solution for large-scale energy storage due to their superhigh theoretical energy density, reliable safety, low cost, and long durability. However, their widespread application is hindered by low power density. Herein, a multiscale structural engineering of Ni-doped CoO nanosheets (NSs) for zinc-air batteries with superior high power density/energy density and durability is reported for the first time. In micro- and nanoscale, robust 2D architecture together with numerous nanopores inside the nanosheets provides an advantageous micro/nanostructured surface for O₂ diffusion and a high electrocatalytic active surface area. In atomic scale, Ni doping significantly enhances the intrinsic oxygen reduction reaction activity per active site. As a result of controlled multiscale structure, the primary zinc-air battery with engineered Ni-doped CoO NSs electrode shows excellent performance with a record-high discharge peak power density of 377 mW cm⁻² , and works stable for >400 h at 5 mA cm⁻². Rechargeable zinc-air battery based on Ni-doped CoO NSs affords an unprecedented small charge-discharge voltage of 0.63 V, outperforming state-of-the-art Pt/C catalyst-based device. Moreover, it is shown that Ni-doped CoO NSs assembled into all-solid-state coin cells can power 17 light-emitting diodes and charge an iPhone 7 mobile phone. |
Keywords: | Electrocatalysis; nanosheets; oxygen reduction reaction; transitional metal oxide; zinc-air batteries |
Rights: | © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim |
DOI: | 10.1002/adma.201804653 |
Grant ID: | http://purl.org/au-research/grants/arc/FL170100154 http://purl.org/au-research/grants/arc/DP170104464 http://purl.org/au-research/grants/arc/DP160104866 |
Published version: | http://dx.doi.org/10.1002/adma.201804653 |
Appears in Collections: | Aurora harvest 8 Chemical Engineering publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.