Porous Zinc Anode Design for Zn-air Chemistry
Open Access
- 1 October 2019
- journal article
- research article
- Published by Frontiers Media SA in Frontiers in Chemistry
- Vol. 7, 656
- https://doi.org/10.3389/fchem.2019.00656
Abstract
Zinc-air battery has drawn increasing attention from the whole world owing to its large energy capacity, stable working voltage, environmentally friendship, and low price. A special porous Zn with three-dimensional (3D) network frame structure, whose multistage average pore sizes can be tuned from 300 to 8 um, is synthesized in this work. It is found that there is a competition between Zn2+ and for their reduction on the supports. And the decrease of Zn2+ concentration and increase of concentration can facilitate the decrease of pore size. Potential-dynamic polarization was tested with 3-electrodes cell, aiming to characterize the electrochemical activity and corrosion properties of porous Zn and commercial Zn foil electrodes. After optimization, the porous Zn prepared with the parameters of 3 M NaBr, 1 M C2H3O2NH4, and 0.01 M C4H6O4Zn shows the most negative corrosion potential of −1.45 V among all the samples, indicating the remarkable anti-corrosion property. Its discharge specific capacity is up to 812 mAh g−1. And discharge-charge test of the porous Zn shows an initial discharge platform of 1.33 V and an initial charge platform of 1.96 V, performing a small overpotential. What's more, the porous Zn exhibits a much longer cycle life than commercial Zn foil. Our work will not only shed light on the design and synthesis of other porous metal materials, but also further promote the development of Zn-based battery electrochemistry.
Keywords
Funding Information
- China Association for Science and Technology
- National Natural Science Foundation of China (51602216)
- Natural Science Foundation of Tianjin City
This publication has 36 references indexed in Scilit:
- Electrochemical response of a high-power asymmetric supercapacitor based on tailored MnOx/Ni foam and carbon cloth in neutral and alkaline electrolytesJournal of Energy Storage, 2019
- Recycling of Ni-Cd batteries by selective isolation and hydrothermal synthesis of porous NiO nanocuboidJournal of Environmental Chemical Engineering, 2018
- Engineering Catalytic Active Sites on Cobalt Oxide Surface for Enhanced Oxygen ElectrocatalysisAdvanced Energy Materials, 2017
- Rechargeable zinc–air batteries: a promising way to green energyJournal of Materials Chemistry A, 2017
- Electrically Rechargeable Zinc–Air Batteries: Progress, Challenges, and PerspectivesAdvanced Materials, 2016
- Hydrogenated Uniform Pt Clusters Supported on Porous CaMnO3 as a Bifunctional Electrocatalyst for Enhanced Oxygen Reduction and EvolutionAdvanced Materials, 2013
- Direct electrodeposition of nanoporous gold with controlled multimodal pore size distributionElectrochemistry Communications, 2011
- Impact of key deposition parameters on the morphology of silver foams prepared by dynamic hydrogen template depositionElectrochimica Acta, 2010
- Electrodeposition of three-dimensional porous silver foamsElectrochemistry Communications, 2010
- Surface treatment of zinc anodes to improve discharge capacity and suppress hydrogen gas evolutionJournal of Power Sources, 2008