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3D Porous Copper Skeleton Supported Zinc Anode toward High Capacity and Long Cycle Life Zinc Ion Batteries
- Source :
- ACS Sustainable Chemistry & Engineering. 7:3364-3371
- Publication Year :
- 2019
- Publisher :
- American Chemical Society (ACS), 2019.
-
Abstract
- © 2019 American Chemical Society. Zinc ion batteries (ZIBs) have attracted extensive attention in recent years, benefiting from their high safety, eco-friendliness, low cost, and high energy density. Although many cathode materials for ZIBs have been developed, the poor stability of zinc anodes caused by uneven deposition/stripping of zinc has inevitably limited the practical application of ZIBs. Herein, we report a highly stable 3D Zn anode prepared by electrodepositing Zn on a chemically etched porous copper skeleton. The inherent excellent electrical conductivity and open structure of the 3D porous copper skeleton ensure the uniform deposition/stripping of Zn. The 3D Zn anode exhibits reduced polarization, stable cycling performance, and almost 100% Coulombic efficiency as well as fast electrochemical kinetics during repeated Zn deposition/stripping processes for 350 h. Furthermore, full cells with a 3D Zn anode, ultrathin MnO2 nanosheet cathode, and Zn2+-containing aqueous electrolyte delivered a record-high capacity of 364 mAh g-1 at a current density of 0.1 A g-1 and good cycling stability with a retained capacity of 173 mAh g-1 after 300 charge/discharge cycles at 0.4 A g-1. This work provides a pathway for developing high-performance ZIBs.
- Subjects :
- Materials science
Renewable Energy, Sustainability and the Environment
Galvanic anode
General Chemical Engineering
chemistry.chemical_element
02 engineering and technology
General Chemistry
Zinc
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Copper
Cathode
0104 chemical sciences
Anode
law.invention
Chemical engineering
chemistry
law
Environmental Chemistry
0210 nano-technology
Polarization (electrochemistry)
Faraday efficiency
Nanosheet
Subjects
Details
- ISSN :
- 21680485
- Volume :
- 7
- Database :
- OpenAIRE
- Journal :
- ACS Sustainable Chemistry & Engineering
- Accession number :
- edsair.doi.dedup.....59b2af99850cd67e6f85df10b7bbffd2