Ultrafast high-capacity NiZn battery with NiAlCo-layered double hydroxide

被引：355

作者：

Gong, Ming ^{[1
]}

Li, Yanguang ^{[1
]}

Zhang, Hongbo ^{[2
]}

Zhang, Bo ^{[1
]}

Zhou, Wu ^{[3
]}

Feng, Ju ^{[1
]}

Wang, Hailiang ^{[1
]}

Liang, Yongye ^{[1
]}

Fan, Zhuangjun ^{[1
]}

Liu, Jie ^{[2
]}

Dai, Hongjie ^{[1
]}

机构：

[1] Stanford Univ, Dept Chem, Stanford, CA 94305 USA

[2] Duke Univ, Dept Chem, Durham, NC 27705 USA

[3] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2014年 / 7卷 / 06期

基金：

美国国家科学基金会;

关键词：

HIGH-PERFORMANCE SUPERCAPACITORS; RECHARGEABLE LITHIUM BATTERIES; ALPHA-NICKEL HYDROXIDE; ELECTRODE MATERIALS; CARBON NANOTUBES; HYBRID MATERIALS; LI-BATTERIES; GRAPHENE; ADDITIVES; OXIDE;

D O I：

10.1039/c4ee00317a

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

High-performance, low-cost, safe and environmentally friendly batteries are important for portable electronics and electric vehicles. Here, we synthesized NiAlCo-layered double hydroxide (LDH) nanoplates attached to few-walled carbon nanotubes (NiAlCo LDH/CNT) as the cathode material of a rechargeable NiZn battery in aqueous alkaline electrolytes. The alpha-phase nickel hydroxide with ultrathin morphology and strong coupling to nanotubes afforded a cathode with a high capacity of similar to 354 mA h g(-1) and similar to 278 mA h g(-1) at current densities of 6.7 A g(-1) and 66.7 A g(-1), respectively. Al and Co co-doping is unique for stabilizing alpha-phase nickel hydroxide with only a small capacity loss of similar to 6% over 2000 charge and discharge cycles at 66.7 A g(-1). Rechargeable ultrafast NiZn batteries with NiAlCo LDH/CNT cathode and a zinc anode can deliver a cell voltage of similar to 1.75 V, energy density of similar to 274 W h kg(-1) and power density of similar to 16 kW kg(-1) (based on active materials) with a charging time of <1 minute. The results open the possibility of ultrafast and safe batteries with high energy density.

引用

页码：2025 / 2032

页数：8

共 40 条

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Building better batteries [J].