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Liquid Metal-Skinned Zn Powder Anodes Enabled by Capillary Suspension
ACS Energy Letters ( IF 19.3 ) Pub Date : 2024-05-20 , DOI: 10.1021/acsenergylett.4c01009
Hyunseo Kang 1 , Seung-Hyeok Kim 1, 2 , David B. Ahn 3 , Xiao Wang 4 , Zhong-Shuai Wu 4 , Sang-Young Lee 1
ACS Energy Letters ( IF 19.3 ) Pub Date : 2024-05-20 , DOI: 10.1021/acsenergylett.4c01009
Hyunseo Kang 1 , Seung-Hyeok Kim 1, 2 , David B. Ahn 3 , Xiao Wang 4 , Zhong-Shuai Wu 4 , Sang-Young Lee 1
Affiliation
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Zinc (Zn) powder-based anodes have garnered considerable attention as viable alternatives to their conventional Zn foil-based counterparts. However, challenges arising from undesirable interfacial side reactions and dendritic Zn growth hinder their practical implementation. Here, we present a class of liquid metal-skinned Zn (LSZ) powder anodes enabled by capillary suspension. The capillary suspension strategy can overcome the miscibility of liquid metal with other components, resulting in the self-standing and uniform LSZ powder anode. The nanothick eutectic gallium–indium (EGaIn) skin layer on Zn powders facilitated the horizontal growth of Zn along the (002) plane and mitigated Zn corrosion and hydrogen evolution reaction. Consequently, a full cell (V2O5 cathode ∥ LSZ powder anode) exhibited a stable capacity retention per cycle of 99.99% over 2000 cycles at a fast current rate of 1 A g–1, outperforming those of previously reported aqueous Zn full cells.
中文翻译：
通过毛细管悬浮液实现液态金属皮锌粉阳极
锌 (Zn) 粉基阳极作为传统锌箔阳极的可行替代品而受到广泛关注。然而，不良界面副反应和枝晶锌生长带来的挑战阻碍了其实际实施。在这里，我们提出了一类通过毛细管悬浮实现的液态金属皮锌 (LSZ) 粉末阳极。毛细管悬浮策略可以克服液态金属与其他组分的混溶性，从而获得自立且均匀的 LSZ 粉末阳极。锌粉上的纳米厚共晶镓-铟（EGaIn）皮层有利于锌沿（002）面水平生长，减轻锌腐蚀和析氢反应。因此，全电池（V 2 O 5 正极∥ LSZ 粉末负极）在 1 A g 的快速电流倍率下，在 2000 次循环中表现出稳定的每次循环容量保持率为 99.99% –1 ，优于之前报道的水性锌全电池。
更新日期：2024-05-20
中文翻译：
通过毛细管悬浮液实现液态金属皮锌粉阳极
锌 (Zn) 粉基阳极作为传统锌箔阳极的可行替代品而受到广泛关注。然而，不良界面副反应和枝晶锌生长带来的挑战阻碍了其实际实施。在这里，我们提出了一类通过毛细管悬浮实现的液态金属皮锌 (LSZ) 粉末阳极。毛细管悬浮策略可以克服液态金属与其他组分的混溶性，从而获得自立且均匀的 LSZ 粉末阳极。锌粉上的纳米厚共晶镓-铟（EGaIn）皮层有利于锌沿（002）面水平生长，减轻锌腐蚀和析氢反应。因此，全电池（V 2 O 5 正极∥ LSZ 粉末负极）在 1 A g 的快速电流倍率下，在 2000 次循环中表现出稳定的每次循环容量保持率为 99.99% –1 ，优于之前报道的水性锌全电池。
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