Realizing Highly Reversible Zinc Anode via Controlled-current Pre-deposition

Chen, Xinghang1; Li, Ming1; Li, Qi1,2; Chen, Yuzhu3,4; Wu, Buke3,4,5; Lin, Meng3,4; An, Qinyou1; Mai, Liqiang1

2023-02-01

10.1002/eem2.12480

ENERGY & ENVIRONMENTAL MATERIALS   Impact Factor & Quartile

2575-0356

Aqueous zinc ion batteries have been considered as the prominent candidate in the next-generation batteries for its low cost, safety and high theoretical capacity. Nonetheless, formation of zinc dendrites and side reactions at the electrode/electrolyte interface during the zinc plating/stripping process affect the cycling reversibility of the zinc anode. Regulation of the zinc plating/stripping process and realizing a highly reversible zinc anode is a great challenge. Herein, we applied a simple and effective approach of controlled-current zinc pre-deposition at copper mesh. At the current density of 40 mA cm(-2), where the electron/ion transfers are both continuous and balanced, the Zn@CM-40 electrode with the (002) crystal plane orientation and the compactly aligned platelet morphology was successfully obtained. Compared with the zinc foil, the Zn@CM-40 exhibits greatly enhanced reversibility in the repeated plating/stripping (850 h at 1 mA cm(-2)) for the symmetric battery test. A series of characterization techniques including electrochemical analyses, XRD, SEM and optical microscopy observation, were used to demonstrate the correlation between the structure of pre-deposited zinc layer and the cycling stability. The COSMOL Multiphysics modeling demonstrates a more uniform electric field distribution in the Zn@CM than the zinc foil due to the aligned platelet morphology. Furthermore, the significant improvement is also achieved in a Zn||MnO2 full battery with a high capacity-retention (87% vs 47.8%). This study demonstrates that controlled-current electrodeposition represents an important strategy to regulate the crystal plane orientation and the morphology of the pre-deposited zinc layer, hence leading to the highly reversible and dendrite-free zinc anode for high-performance zinc ion batteries.

controlled-current pre-deposition dendrite-free reversible zinc anode zinc ion battery

SCI

English

Corresponding

National Natural Science Foundation of China["52072285","52127816","51872218"] ; National Key Research and Development Program of China[2020YFA0715000] ; Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory[XHT2020-003]

Materials Science

Materials Science, Multidisciplinary

WOS:000935014300001

WILEY

Web of Science

1.Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Hubei, Peoples R China
2.Guangdong Lab, Foshan Xianhu Lab Adv Energy Sci & Technol, Foshan 528200, Peoples R China
3.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
4.Southern Univ Sci & Technol, SUSTech Energy Inst Carbon Neutral, Shenzhen, Peoples R China
5.Southern Univ Sci & Technol, Shenzhen Key Lab Adv Energy Storage, Shenzhen 518055, Peoples R China

Chen, Xinghang,Li, Ming,Li, Qi,et al. Realizing Highly Reversible Zinc Anode via Controlled-current Pre-deposition[J]. ENERGY & ENVIRONMENTAL MATERIALS,2023.

Chen, Xinghang.,Li, Ming.,Li, Qi.,Chen, Yuzhu.,Wu, Buke.,...&Mai, Liqiang.(2023).Realizing Highly Reversible Zinc Anode via Controlled-current Pre-deposition.ENERGY & ENVIRONMENTAL MATERIALS.

Chen, Xinghang,et al."Realizing Highly Reversible Zinc Anode via Controlled-current Pre-deposition".ENERGY & ENVIRONMENTAL MATERIALS (2023).