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Facet-governed Zn homoepitaxy via lattice potential regulation
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2024-06-21 , DOI: 10.1039/d4ee00881b Xianzhong Yang 1, 2 , Yan Lu 3 , Zhetong Liu 4 , Haoqing Ji 1 , Ziyan Chen 1 , Jun Peng 5 , Yiwen Su 1 , Yuhan Zou 1 , Chao Wu 2 , Shixue Dou 2 , Peng Gao 4 , Zaiping Guo 6 , Jingyu Sun 1
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2024-06-21 , DOI: 10.1039/d4ee00881b Xianzhong Yang 1, 2 , Yan Lu 3 , Zhetong Liu 4 , Haoqing Ji 1 , Ziyan Chen 1 , Jun Peng 5 , Yiwen Su 1 , Yuhan Zou 1 , Chao Wu 2 , Shixue Dou 2 , Peng Gao 4 , Zaiping Guo 6 , Jingyu Sun 1
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The irreversibility of the Zn anode stemming from disordered Zn deposition and rampant hydrogen evolution has been a formidable challenge, impeding the practical advancement of aqueous Zn-ion batteries. Directing the epitaxial deposition of polycrystalline Zn at the anode/electrolyte interface is appealing to address the obstacle, but remains poorly explored. Here, a comprehensive strategy by employing facet-governed homoepitaxy of polycrystalline Zn via lattice potential regulation is reported. The crystallinity of the Zn substrate could be significantly improved during the growth of a prototype fluoride-contained overlayer by chemical vapour deposition. This treatment establishes a periodic lattice potential field for Zn deposition. The introduction of an overlayer promotes the uniform nucleation of Zn at the infancy stage of electrodeposition. To counteract the tip effect of Zn growth, an ionic liquid is concurrently employed to alleviate Zn2+ accumulation throughout cation adsorption, fostering stable orientational deposition. Such an additive can also reduce water activity, effectively inhibiting hydrogen evolution. The thus-derived Zn anodes demonstrate decent durability even at a low N/P ratio. This work unlocks a new opportunity for guiding epitaxial Zn deposition toward pragmatic Zn anodes.
中文翻译：
通过晶格电位调节进行面控制的锌同质外延
由于无序的锌沉积和猖獗的析氢而导致的锌负极的不可逆性一直是一个巨大的挑战，阻碍了水系锌离子电池的实际发展。在阳极/电解质界面直接外延沉积多晶锌有望解决这一障碍，但仍缺乏探索。在此，报道了一种通过晶格电位调节采用多晶锌晶面控制同质外延的综合策略。在通过化学气相沉积原型含氟覆盖层的生长过程中，锌基底的结晶度可以得到显着改善。这种处理为锌沉积建立了周期性晶格势场。覆盖层的引入促进了锌在电沉积初期的均匀成核。为了抵消 Zn 生长的尖端效应，同时使用离子液体来减轻阳离子吸附过程中 Zn 2+ 的积累，从而促进稳定的定向沉积。这种添加剂还可以降低水活度，有效抑制析氢。由此获得的锌阳极即使在低 N/P 比下也表现出良好的耐久性。这项工作为引导外延锌沉积走向实用的锌阳极提供了一个新的机会。
更新日期：2024-06-21
中文翻译：
通过晶格电位调节进行面控制的锌同质外延
由于无序的锌沉积和猖獗的析氢而导致的锌负极的不可逆性一直是一个巨大的挑战，阻碍了水系锌离子电池的实际发展。在阳极/电解质界面直接外延沉积多晶锌有望解决这一障碍，但仍缺乏探索。在此，报道了一种通过晶格电位调节采用多晶锌晶面控制同质外延的综合策略。在通过化学气相沉积原型含氟覆盖层的生长过程中，锌基底的结晶度可以得到显着改善。这种处理为锌沉积建立了周期性晶格势场。覆盖层的引入促进了锌在电沉积初期的均匀成核。为了抵消 Zn 生长的尖端效应，同时使用离子液体来减轻阳离子吸附过程中 Zn 2+ 的积累，从而促进稳定的定向沉积。这种添加剂还可以降低水活度，有效抑制析氢。由此获得的锌阳极即使在低 N/P 比下也表现出良好的耐久性。这项工作为引导外延锌沉积走向实用的锌阳极提供了一个新的机会。
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