A dendrite-free Zn anode enabled by PEDOT:PSS/MoS<sub>2</sub> electrokinetic channels for aqueous Zn-ion batteries

Wang, Hai; Zhao, Qin; Li, Weimin; Watanabe, Shun; Wang, Xiaobo

doi:10.1039/d4nr00465e

Cited by 2 publications

(1 citation statement)

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“…The subsequent casting of the PEDOT:PSS on the Ag layer can suppress Zn dendrites and homogenize the electric field, leading to reversible Zn deposition/stripping behavior over 200 h at high current density with a large capacity (20 mA cm –2 and 5 mAh cm –2 ). Alternatively, a coating layer composed of monolayer MoS 2 and PEDOT:PSS was also designed over the surface of Zn anode to address the zinc dendrite growth . In another work reported by Jia et al, the electrochemically exfoliated graphene sheets are used to construct nanofluidic channels for favorable desolvation of hydrated Zn 2+ .…”

Section: Introductionmentioning

confidence: 99%

Highly Reversible and Dendrite-Free Zinc Anodes Enabled by PEDOT Nanowire Interfacial Layers for Aqueous Zinc-Ion Batteries

Wang,

Zhang,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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The aqueous zinc-ion batteries (ZIBs) have gained increasing attention because of their high specific capacity, low cost, and good safety. However, side reactions, hydrogen evolution reaction, and uncontrolled zinc dendrites accompanying the Zn metal anodes have impeded the applications of ZIBs in grid-scale energy storage. Herein, the poly(3,4-ethylenedioxythiophene) (PEDOT) nanowires as an interfacial layer on the Zn anode (Zn−PEDOT) are reported to address the above issues. Our experimental results and density functional theory simulation reveal that the interactions between the Zn 2+ and S atoms in thiophene rings of PEDOT not only facilitate the desolvation of hydrated Zn 2+ but also can regulate the diffusion of Zn 2+ along the thiophene molecular chains and induce the dendrite-free deposition of Zn along the (002) surface. Consequently, the Zn||Cu−PEDOT half-cell exhibits highly reversible plating/stripping behavior with an average Coulombic efficiency of 99.7% over 2500 cycles at 1 mA cm −2 and a capacity of 0.5 mAh cm −2 . A symmetric Zn−PEDOT cell can steadily operate over 1100 h at 1 mA cm −2 (1 mAh cm −2 ) and 470 h at 10 mA cm −2 (2 mAh cm −2 ), outperforming the counterpart bare Zn anodes. Besides, a Zn−PEDOT||V 2 O 5 full cell could deliver a specific capacity of 280 mAh g −1 at 1 A g −1 and exhibits a decent cycling stability, which are much superior to the bare Zn||V 2 O 5 cell. Our results demonstrate that PEDOT nanowires are one of the promising interfacial layers for dendrite-free aqueous ZIBs.

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Section: Introductionmentioning

confidence: 99%

Highly Reversible and Dendrite-Free Zinc Anodes Enabled by PEDOT Nanowire Interfacial Layers for Aqueous Zinc-Ion Batteries

Wang,

Zhang,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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Poly(3, 4‐Ethylenedioxythiophene) as Promising Energy Storage Materials in Zinc‐Ion Batteries

Zhang,

Wu,

Ran

2024

Macromol. Rapid Commun.

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Benefiting from the advantages of high conductivity and good electrochemical stability, the conjugated conducting polymer poly (3, 4‐ethylenedioxythiophene) is a promising energy storage material in zinc‐ion batteries. Zinc‐ion batteries have the advantages of high safety, environmental friendliness, and low cost, but suffer from unstable cathode material structure, poor electrical conductivity, and uncontrollable dendritic growth of zinc anodes. PEDOT, with its fast electrochemical response and wide potential window, is expected to make up for the shortcomings and enhance capacity and cycle life of zinc‐ion batteries. Herein, in this review different polymerization methods of poly (3, 4‐ethylenedioxythiophene) as well as their structure and properties are summarized; the progress in doping strategies related to the increasing conductivity and dispersivity of poly (3, 4‐ethylenedioxythiophene) materials is discussed; specific applications of poly (3, 4‐ethylenedioxythiophene)‐based materials in anode, cathode, electrolyte, and binder of zinc‐ion batteries are explored; and the representative advancements for improving the electrochemical performance of poly (3, 4‐ethylenedioxythiophene) in zinc‐ion batteries are emphasized. Finally, the current challenges of poly (3, 4‐ethylenedioxythiophene) as promising materials in zinc‐ion batteries and an insight into their future research directions are pointed out.

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A dendrite-free Zn anode enabled by PEDOT:PSS/MoS₂ electrokinetic channels for aqueous Zn-ion batteries

Abstract: Notorious Zn dendrites and severe parasitic side reactions severely disrupt the anode-electrolyte interface during Zn plating/stripping, resulting in uncontrollable Zn deposition and limiting the application of aqueous zinc ion batteries...

Cited by 2 publications

References 56 publications

Highly Reversible and Dendrite-Free Zinc Anodes Enabled by PEDOT Nanowire Interfacial Layers for Aqueous Zinc-Ion Batteries

Highly Reversible and Dendrite-Free Zinc Anodes Enabled by PEDOT Nanowire Interfacial Layers for Aqueous Zinc-Ion Batteries

Poly(3, 4‐Ethylenedioxythiophene) as Promising Energy Storage Materials in Zinc‐Ion Batteries

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A dendrite-free Zn anode enabled by PEDOT:PSS/MoS2 electrokinetic channels for aqueous Zn-ion batteries

Abstract: Notorious Zn dendrites and severe parasitic side reactions severely disrupt the anode-electrolyte interface during Zn plating/stripping, resulting in uncontrollable Zn deposition and limiting the application of aqueous zinc ion batteries...

Cited by 2 publications

References 56 publications

Highly Reversible and Dendrite-Free Zinc Anodes Enabled by PEDOT Nanowire Interfacial Layers for Aqueous Zinc-Ion Batteries

Highly Reversible and Dendrite-Free Zinc Anodes Enabled by PEDOT Nanowire Interfacial Layers for Aqueous Zinc-Ion Batteries

Poly(3, 4‐Ethylenedioxythiophene) as Promising Energy Storage Materials in Zinc‐Ion Batteries

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A dendrite-free Zn anode enabled by PEDOT:PSS/MoS₂ electrokinetic channels for aqueous Zn-ion batteries