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

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.

2D Materials Boost Advanced Zn Anodes: Principles, Advances, and Challenges

“…(3) sub + Q e = Zn tried to form composite with 2D nanosheets, achieving an improved ZIB performance [80][81][82][83][84][85][86][87][88][89][90][91][92][93][94][95][96][97].…”

Density functional theory investigation of the energy storage potential ofgraphene‐polypyrrolenanocomposites as high‐performance electrode for Zn‐ion batteries

“…Another study found that the Zn‐PPy/rGO//MnO 2 battery could produce an excellent initial discharge capacity of 325 mAh g −1 at 0.5A/g, while maintaining up to 50% of its capacity after 300 cycles. These studies show the potentials of using composites, made of graphene and polypyrrole as electrode materials for Zn‐ion batteries and hybrid supercapacitors, underscoring the need for continuous and dedicated study to fully explore their applications in energy storage 23 …”

“…Graphene is a single layer of carbon atoms that has distinct electronic and mechanical characteristics, 20 while polypyrrole is a conducting polymer with excellent electrochemical properties 21 . Zn‐ion batteries are becoming increasingly attractive for energy storage in various industries, including renewable energy and electric cars; thanks to these materials' promised improvements in the stability and capacity of the resulting devices made of these materials 22,23 …”

Hierarchical Carbon Nanosheet Embedded MnOx Cathode for High‐Performance Aqueous Zinc‐Ion Batteries

“…Moreover, the organic electrolytes used in LIBs are generally toxic and flammable, which likely cause huge safety issues [6–9] . Therefore, development of non‐lithium battery technology with high safety and cost effectiveness is highly desirable [10,11] . In this regard, zinc‐ion batteries (ZIBs) that use nonflammable aqueous electrolytes represent a promising candidate capable of enabling intrinsic safety [12,13] .…”

“…[6][7][8][9] Therefore, development of non-lithium battery technology with high safety and cost effectiveness is highly desirable. [10,11] In this regard, zinc-ion batteries (ZIBs) that use nonflammable aqueous electrolytes represent a promising candidate capable of enabling intrinsic safety. [12,13] Moreover, the abundant natural resources and cost effectiveness of Zn exhibit great potential in large-scale energy storage.…”