Polypyrrole/reduced graphene oxide composites coated zinc anode with dendrite suppression feature for boosting performances of zinc ion battery

Sonti Khamsanga; Hiroshi Uyama; Weerapong Nuanwat; Prasit Pattananuwat

doi:10.1038/s41598-022-12657-9

Polypyrrole/reduced graphene oxide composites coated zinc anode with dendrite suppression feature for boosting performances of zinc ion battery

Sci Rep. 2022 May 23;12(1):8689. doi: 10.1038/s41598-022-12657-9.

Authors

Sonti Khamsanga¹, Hiroshi Uyama², Weerapong Nuanwat^{1

3}, Prasit Pattananuwat^{4

5

6}

Affiliations

¹ Department of Materials Science, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.
² Department of Applied Chemistry, Graduate School of Engineering, Suita, Osaka, 565-0871, Japan.
³ Center of Excellence On Petrochemical and Materials Technology, Chulalongkorn University, Bangkok, 10330, Thailand.
⁴ Department of Materials Science, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand. Prasit.Pat@chula.ac.th.
⁵ Center of Excellence On Petrochemical and Materials Technology, Chulalongkorn University, Bangkok, 10330, Thailand. Prasit.Pat@chula.ac.th.
⁶ Research Unit of Advanced Materials for Energy Storage, Chulalongkorn University, Bangkok, 10330, Thailand. Prasit.Pat@chula.ac.th.

Abstract

Metallic zinc (Zn) anode has been received a great promise for aqueous rechargeable zinc-ion batteries (ZIBs) due to its intrinsic safety, low cost, and high volumetric capacity. However, the dendrite formation regarding the surface corrosion is the critical problems to achieve the high performance and the long lifespans of ZIBs. Here, we purpose the facile cyclic voltammetry deposition of polypyrrole/reduced graphene oxide (PPy/rGO) composites coated onto Zn 3D surface as Zn anode for ZIBs. As results, the deposited PPy/rGO layer demonstrates the homogeneous distribution covering onto Zn surface, effectively suppressing the formation of dendrite. Additionally, a symmetric cell of the PPy/rGO coated Zn remarkably enhances an electrochemical cycling with a low voltage hysteresis for zinc plating/stripping, which is superior to the pristine Zn cell. In addition, the deposited layer of PPy/rGO on Zn effectively improves the reactivity of electrochemically active surface area and the intrinsic electronic configurations, participating in extraction/intercalation of Zn²⁺ ions and leading to enhance ZIBs performance. The coin cell battery of Zn-PPy/rGO//MnO₂ can deliver a high initial discharge capacity of 325 mAh/g at 0.5A/g with a good cycling stability up to 50% capacity retention after 300 cycles. Thus, these achieved results of Zn-PPy/rGO//MnO₂ battery with dendrite-free feature effectively enhance the life-performance of ZIBs and open the way of the designed coating composite materials to suppress dendrite issues.