Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/129834
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | A scalable top-down strategy toward practical metrics of Ni-Zn aqueous batteries with total energy densities of 165 W h kg‾¹ and 506 W h L‾¹ |
Other Titles: | A scalable top-down strategy toward practical metrics of Ni-Zn aqueous batteries with total energy densities of 165 W h kg -bar(1) and 506 W h L-bar(1) |
Author: | Zhou, W. Zhu, D. He, J. Li, J. Chen, H. Chen, Y. Chao, D. |
Citation: | Energy and Environmental Science, 2020; 13(11):4157-4167 |
Publisher: | Royal Society of Chemistry |
Issue Date: | 2020 |
ISSN: | 1754-5692 1754-5706 |
Statement of Responsibility: | Wanhai Zhou, Ding Zhu, Jian He, Jinchi Li, Hui Chen, Yungui Chen and Dongliang Chao |
Abstract: | Research interest in alkaline aqueous batteries has surged worldwide due to their merits of low cost and high safety. However, the development of practical high-energy Ni–Zn batteries has been beset by the bias between industrial application with gravimetrical energy limits and scientific research with volumetrical shortages. Herein, we propose a facile top-down strategy to prepare low-cost and ultra-dense Co-free microscale cathodes for Ni–Zn batteries. Based on the anion exchange and Kirkendall effect, this commercially viable technology is capable of permeating the matrix of microspheres with uniform and robust adherence of NiS nanodots and abundant mesopores. The enhanced proton-diffusion kinetics endows the Ni–Zn battery with impressive areal capacity (41.3 mA h cm−2) and a fast power response of 715 mW cm−2, together with 80 000 transient pulse cycles. A best practice for systematic measuring of aqueous batteries in a more practical metric is proposed. As a proof of concept, we demonstrate a commercial-grade 3.5 A h Ni–Zn pouch battery, which concomitantly presents record-high energy densities of 165 W h kg−1 gravimetrically and 506 W h L−1 volumetrically based on the whole battery. The cost is estimated conservatively at US $32.8 kW h−1 on a device scale. These results provide a new opportunity to advance high-energy Ni–Zn batteries and should be of immediate benefit toward low-cost, practical energy storage and grid-scale applications. |
Rights: | This journal is©The Royal Society of Chemistry 2020 |
DOI: | 10.1039/d0ee01221a |
Grant ID: | http://purl.org/au-research/grants/arc/DE200101244 |
Published version: | http://dx.doi.org/10.1039/d0ee01221a |
Appears in Collections: | Aurora harvest 8 Physics 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.