A Holistic Additive Protocol Steers Dendrite‐Free Zn(101) Orientational Electrodeposition

Su, Yiwen; Xu, Liang; Sun, Yingjie; Guo, Wenyi; Yang, Xianzhong; Zou, Yuhan; Ding, Meng; Zhang, Qihui; Qiao, Changpeng; Dou, Shixue; Cheng, Tao; Sun, Jingyu

doi:10.1002/smll.202308209

Cited by 11 publications

(3 citation statements)

References 51 publications

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“…Apart from the uneven distribution of electrical filed driven by tips, the concentration gradient resulting from the disparity in rates between the rapid Faraday reaction and the slow Zn 2+ diffusion also contributes to dendrite growth. [55] The rate of electrochemical reaction is closely tied to the diffusion rate. Zn ions exhibit chemotactic deposition tendencies, extending into the bulk electrolyte to maintain electric neutrality.…”

Section: Dendrite Issuementioning

confidence: 99%

“…dendrites as lattice distortion accumulates. [55] On the contrary, (101) textured Zn maintains a stable vertical epitaxial growth pattern with quicker mass transfer kinetics, enabling sustained and stable regulation (Figure 6h). [108] Currently, the preference between the two crystal facets (002) and ( 101) for enhancing the stability of the Zn anode remains uncertain.…”

Section: Homoepitaxial Depositionmentioning

confidence: 99%

“…[52] Recent studies have challenged this notion by showcasing the high reversibility of orientational deposition on Zn (100) and Zn (101) planes. [53][54][55][56] Therefore, a timely and comprehensive review is urgently necessitated to analyze the achievements in Zn orientational deposition and guide further progress in this rapid growing area.…”

Section: Introductionmentioning

confidence: 99%

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Crystallographic Manipulation Strategies toward Reversible Zn Anode with Orientational Deposition

Yang,

Dong,

Weng

et al. 2024

Advanced Energy Materials

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The reversibility and sustainability of Zn anode are greatly hampered by the dendrite growth and side reactions. Orientational deposition, which allows the assembly of Zn deposits in a highly ordered and compact manner, offers a solution to these issues by enabling dendrite‐free Zn anodes. Moreover, Zn orientational deposition can effectively inhibit side reaction by reducing the exposed surface area of the electrode. Despite significant progress in the field of Zn orientational deposition, there is still a lack of clear guidelines for regulating the orientation, and the underlying mechanisms remain rather elusive. Therefore, a comprehensive review is urgently needed to provide a mechanistic insight into Zn orientational deposition. This review summarizes the burgeoning strategies for steering Zn orientational deposition, categorizing the corresponding mechanisms into five aspects: heteroepitaxial deposition, homoepitaxial deposition, interfacial cultivation, crystal facet anchoring, and current density regulation. The distinct advantages and limitations of each mechanism in controlling the growth orientation are discussed in detail. Finally, the challenges and future trends pertaining to Zn orientational deposition are envisaged, aiming in essence to realize highly reversible Zn anodes and ultimately bridge the gap between reality and ideal in aqueous Zn‐ion batteries.

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Section: Dendrite Issuementioning

confidence: 99%

Section: Homoepitaxial Depositionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Crystallographic Manipulation Strategies toward Reversible Zn Anode with Orientational Deposition

Yang,

Dong,

Weng

et al. 2024

Advanced Energy Materials

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Concurrent Regulation of Surface Topography and Interfacial Physicochemistry via Trace Chelation Acid Additives toward Durable Zn Anodes

Li,

Zhang,

et al. 2024

Adv Funct Materials

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Electrolyte additive engineering is a feasible protocol in improving Zn anode stability. Typical additive designs center on the regulation of Zn deposition; nevertheless, versatile additives are urgently requested to comprehensively manage the surface landscape, interface physicochemistry, and by‐product elimination. Here, a straightforward strategy is presented to meet such needs employing an environmentally‐friendly chelator, hydroxyethyl‐ethylenediaminetriacetate acid (HEDTA), as an additive for ZnSO4 electrolyte. Throughout theoretical computations and experimental investigations, it is demonstrated that protons released from the gradual ionization of HEDTA during rest periods aid in the mild engraving of the Zn surface. Both the amino and carboxyl groups of HEDTA⁻ can be protonated, which effectively buffers the interfacial pH value in the entire battery lifespan and eliminates the formation of by‐products. The HEDTA− anions can also adsorb onto the Zn surface, helping facilitate Zn2⁺ mass transfer and accelerate the desolvation process. Benefiting from the synchronous modulation of surface topography and interfacial physicochemistry, the assembled half cells affording HEDTA additive maintain a durable operation of up to 8821 cycles at 5.0 mA cm−2/1.0 mAh cm−2. Additionally, symmetric cells manifest stable cycling for over 4600 h at 0.5 mA cm−2/0.25 mAh cm−2.

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Oriented and Continuous Phase Epitaxy Enabled by A Highly Dendrite‐Resistant Plane Toward Super‐High Areal Capacity Zinc Metal Batteries

Wang,

Chen,

et al. 2024

Advanced Energy Materials

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Unstable Zn metal anodes with dendrites/side reactions are becoming the main obstacle to the practical application of zinc‐based aqueous batteries. Epitaxial growth has been considered to be an effective strategy for solving these issues, especially for inducing the (002) plane growth. Nonetheless, the (002)‐textured Zn is difficult to achieve highly stable Zn anode under high capacity resulting from its large lattice distortion. Herein, the Cu single atom anchored polymeric carbon nitride (Cu@PCN) is synthesized by a facile thermal polymerization method. Serving as multifunctional protective layer on Zn surface, the Cu@PCN can provide massive nucleation sites at a nano‐level and uniformize the electron distribution through coordination engineering. Optimizing the coordination structures of single Cu and N atoms within the carbon matrix enables a redistribution for electric field and regulates ion flux. More importantly, this coordination strategy with single atoms is first reported to customize oriented and continuous phase epitaxy along highly dendrite‐resistant Zn(101) plane by reducing (101) surface energy. This pattern of oriented dense deposition leads to stable and reversible Zn plating/stripping is achieved, which delivers an extended cycling life of 550 h at 10 A cm−2, 20 mAh cm−2. The practical full cell also displays stable performance for 1200 cycles.

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A Holistic Additive Protocol Steers Dendrite‐Free Zn(101) Orientational Electrodeposition

Cited by 11 publications

References 51 publications

Crystallographic Manipulation Strategies toward Reversible Zn Anode with Orientational Deposition

Crystallographic Manipulation Strategies toward Reversible Zn Anode with Orientational Deposition

Concurrent Regulation of Surface Topography and Interfacial Physicochemistry via Trace Chelation Acid Additives toward Durable Zn Anodes

Oriented and Continuous Phase Epitaxy Enabled by A Highly Dendrite‐Resistant Plane Toward Super‐High Areal Capacity Zinc Metal Batteries

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