气候变化领域集成服务门户(CCPortal): A scalable top-down strategy toward practical metrics of Ni-Zn aqueous batteries with total energy densities of 165 W h kg-1and 506 W h L-1

CCPortal

DOI	10.1039/d0ee01221a
	A scalable top-down strategy toward practical metrics of Ni-Zn aqueous batteries with total energy densities of 165 W h kg-1and 506 W h L-1
	Zhou W.; Zhu D.; He J.; Li J.; Chen H.; Chen Y.; Chao D.
发表日期	2020
ISSN	17545692
起始页码	4157
结束页码	4167
卷号	13 期号:11
英文摘要	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 80000 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. © The Royal Society of Chemistry.
英文关键词	Binary alloys; Cobalt alloys; Costs; Electric batteries; Energy storage; Industrial research; Nickel sulfates; Sulfide minerals; Aqueous batteries; High energy densities; Kirkendall effects; Practical energies; Proof of concept; Proton diffusion; Research interests; Scientific researches; Zinc alloys; aqueous solution; diffusion; energy storage; instrumentation; ion exchange; reaction kinetics
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189501
作者单位	Institute of New-Energy and Low-Carbon Technology, Sichuan University, Chengdu, Sichuan, 610065, China; School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide SA, 5005, Australia; College of Materials Science and Technology, Sichuan University, Chengdu ,Sichuan, 610065, China
推荐引用方式 GB/T 7714	Zhou W.,Zhu D.,He J.,et al. A scalable top-down strategy toward practical metrics of Ni-Zn aqueous batteries with total energy densities of 165 W h kg-1and 506 W h L-1[J],2020,13(11).
APA	Zhou W..,Zhu D..,He J..,Li J..,Chen H..,...&Chao D..(2020).A scalable top-down strategy toward practical metrics of Ni-Zn aqueous batteries with total energy densities of 165 W h kg-1and 506 W h L-1.Energy & Environmental Science,13(11).
MLA	Zhou W.,et al."A scalable top-down strategy toward practical metrics of Ni-Zn aqueous batteries with total energy densities of 165 W h kg-1and 506 W h L-1".Energy & Environmental Science 13.11(2020).