An Artificial Polyacrylonitrile Coating Layer Confining Zinc Dendrite Growth for Highly Reversible Aqueous Zinc‐Based Batteries

Chen, Peng; Yuan, Xingxing; Xia, Yingbin; Zhang, Yi; Fu, Lijun; Liu, Huan; Yu, Nengfei; Huang, Qinghong; Wang, Bin; Hu, Xianwei; Wu, Yuping; Ree, Teunis van

doi:10.1002/advs.202100309

Cited by 300 publications

(193 citation statements)

References 90 publications

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“…[50] Although the growth of dendrites and the corrosion of the negative electrode are weakened in the mild aqueous electrolytes, the Zn anode is still subject to corrosion due to the active water. [51,52] For example, The Zn anode was penetrated the mild aqueous electrolyte (1 m ZnSO 4 ) for seven days leading to the progressively corrosion of the Zn surface. [53,54] 3) Dissolution of cathodes-Recently, many cathodes have been investigated for ZIBs, including manganese oxides, vanadium oxides, Prussian blue analogues, and organic materials.…”

Section: Problems Of Aqueous Electrolytes In Zinc-ion Batteriesmentioning

confidence: 99%

Recent Advances in Electrolytes for “Beyond Aqueous” Zinc‐Ion Batteries

et al. 2021

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Designing high performance electrolyte is an efficient strategy to circumvent these problems. As one of the most important components, electrolytes provide the basic operating environment to guarantee the transmission of the Zn 2+ between the two electrodes during the charge-discharge processes, affect the Zn 2+ /Zn plating/ stripping on the anode and deciding the electrochemically stable potential windows. [12] Since the utilization of alkaline electrolytes in batteries in earlier studies, Zn|KOH|MnO 2 batteries became a hot topic. [13] However, the using of an alkaline electrolyte always leads to the growth of Zn dendrites and the corrosion of the anode, resulting in rapid capacity fading. [14][15][16] Until 1986, the replacement of corrosive alkaline electrolyte systems by neutral aqueous electrolytes greatly improved the performance and safety of ZIBs. [17] Although the aqueous electrolytes alleviated the corrosion of the Zn electrode in some extent, the problems related to the growth of dendrites and the dissolution of the cathode, especially the limited electrochemical stability window (≈1.23 V) still are the challenge in the application of ZIBs. [18][19][20] The aqueous electrolytes of ZIBs often suffer from the water splitting process, including hydrogen evolution reaction and oxygen evolution reaction. [21][22][23] Therefore, in order to overcome the problems mentioned above, "beyond aqueous" electrolytes for ZIBs have attracted extensive attention in recent years. [24][25][26] At present, the "beyond aqueous" electrolytes for ZIBs have been reported mainly include liquid organic electrolytes and solid electrolytes. Zn anode in the organic electrolytes have high thermodynamic stability, avoiding the appearance of passivation products inevitably generated in traditional aqueous solution, i.e., ZnO and Zn(OH) 4 −2. [27] Solid-state electrolytes have sufficient mechanical strength to inhibit the growth of dendrites. [28] Moreover, the "beyond aqueous" electrolytes without water fundamentally avoid the decomposition of water and the formation of side products related to water. Compared with aqueous electrolytes, the "beyond aqueous" electrolytes exhibit a wide electrochemical stability window (Figure 1) and excellent thermodynamic stability of Zn anode leading to Zn plating/ stripping high reversibility with higher Coulombic efficiencies (CEs). [29] Although significant advances have been made in improving the electrochemical performance of the "beyond aqueous" electrolytes for ZIBs, several severe issues still exist, which largely prevent the development of "beyond aqueous" ZIBs. [30][31][32][33][34][35] The main issues of "beyond aqueous" electrolytes With the growing demands for large-scale energy storage, Zn-ion batteries (ZIBs) with distinct advantages, including resource abundance, low-cost, high-safety, and acceptable energy density, are considered as potential substitutes for Li-ion batteries. Although numerous efforts are devoted to design and develop high performance cathodes and aqueous electrolyt...

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Section: Problems Of Aqueous Electrolytes In Zinc-ion Batteriesmentioning

confidence: 99%

Recent Advances in Electrolytes for “Beyond Aqueous” Zinc‐Ion Batteries

et al. 2021

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“…In addition to constructing intuitive confined channels to mechanically change the concentration field, many organic materials can directly and selectively manipulate the migration of Zn 2+ ions to redistribute concentration field with the assistance of their specific polar groups (Fig. 4 a), such as the amide group in polyamide (PA) [ 43 ], the poly(vinyl alcohol) group in poly(vinyl butyral) (PVB) [ 41 ], the carbonyl group in polyimide [ 49 ], the amide group and pyrrolidone group in polyacrylamide (PAM)/polyvinylpyrrolidone (PVP) [ 61 ], and the cyano group in cyanoacrylate [ 62 ] or polyacrylonitrile (PAN) [ 63 ]. These polar groups can donate electron pairs, which can guide coordination adsorption through strong interaction with Zn 2+ ions (Fig.…”

Section: Design and Optimization Of High-performance Zn Anode In Mild Aqueous Zibsmentioning

confidence: 99%

Zinc Anode for Mild Aqueous Zinc-Ion Batteries: Challenges, Strategies, and Perspectives

et al. 2022

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The rapid advance of mild aqueous zinc-ion batteries (ZIBs) is driving the development of the energy storage system market. But the thorny issues of Zn anodes, mainly including dendrite growth, hydrogen evolution, and corrosion, severely reduce the performance of ZIBs. To commercialize ZIBs, researchers must overcome formidable challenges. Research about mild aqueous ZIBs is still developing. Various technical and scientific obstacles to designing Zn anodes with high stripping efficiency and long cycling life have not been resolved. Moreover, the performance of Zn anodes is a complex scientific issue determined by various parameters, most of which are often ignored, failing to achieve the maximum performance of the cell. This review proposes a comprehensive overview of existing Zn anode issues and the corresponding strategies, frontiers, and development trends to deeply comprehend the essence and inner connection of degradation mechanism and performance. First, the formation mechanism of dendrite growth, hydrogen evolution, corrosion, and their influence on the anode are analyzed. Furthermore, various strategies for constructing stable Zn anodes are summarized and discussed in detail from multiple perspectives. These strategies are mainly divided into interface modification, structural anode, alloying anode, intercalation anode, liquid electrolyte, non-liquid electrolyte, separator design, and other strategies. Finally, research directions and prospects are put forward for Zn anodes. This contribution highlights the latest developments and provides new insights into the advanced Zn anode for future research.

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“…11 f, g). Recently, Hu et al [ 104 ] used a simple drop-coating method to prepare a PAN coating on a Zn anode to solve the dendrite problem. Because of the microchannels in the polymer network and the interaction effect between Zn 2+ and the cyano groups (–CN), the PAN coating combined with Zn salt not only promoted the uniform transport of dissolved Zn 2+ in the film, but also drove the uniform electrodeposition of Zn metal.…”

Section: Surface Modification Of Zn Anodementioning

confidence: 99%

Interfacial Engineering Strategy for High-Performance Zn Metal Anodes

et al. 2021

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Due to their high safety and low cost, rechargeable aqueous Zn-ion batteries (RAZIBs) have been receiving increased attention and are expected to be the next generation of energy storage systems. However, metal Zn anodes exhibit a limited-service life and inferior reversibility owing to the issues of Zn dendrites and side reactions, which severely hinder the further development of RAZIBs. Researchers have attempted to design high-performance Zn anodes by interfacial engineering, including surface modification and the addition of electrolyte additives, to stabilize Zn anodes. The purpose is to achieve uniform Zn nucleation and flat Zn deposition by regulating the deposition behavior of Zn ions, which effectively improves the cycling stability of the Zn anode. This review comprehensively summarizes the reaction mechanisms of interfacial modification for inhibiting the growth of Zn dendrites and the occurrence of side reactions. In addition, the research progress of interfacial engineering strategies for RAZIBs is summarized and classified. Finally, prospects and suggestions are provided for the design of highly reversible Zn anodes.

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An Artificial Polyacrylonitrile Coating Layer Confining Zinc Dendrite Growth for Highly Reversible Aqueous Zinc‐Based Batteries

Cited by 300 publications

References 90 publications

Recent Advances in Electrolytes for “Beyond Aqueous” Zinc‐Ion Batteries

Recent Advances in Electrolytes for “Beyond Aqueous” Zinc‐Ion Batteries

Zinc Anode for Mild Aqueous Zinc-Ion Batteries: Challenges, Strategies, and Perspectives

Interfacial Engineering Strategy for High-Performance Zn Metal Anodes

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