利用毛细悬浮技术实现液态金属镀层锌粉阳极

IF 19.3 1区材料科学 Q1 CHEMISTRY, PHYSICAL ACS Energy Letters Pub Date : 2024-05-20 DOI:10.1021/acsenergylett.4c01009

Hyunseo Kang, Seung-Hyeok Kim, David B. Ahn, Xiao Wang, Zhong-Shuai Wu* and Sang-Young Lee*,

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引用次数: 0

摘要

锌（Zn）粉末阳极作为传统锌箔阳极的可行替代品，已经引起了广泛关注。然而，不良的界面副反应和树枝状锌生长所带来的挑战阻碍了它们的实际应用。在此，我们提出了一类通过毛细悬浮技术实现的液态金属外皮锌（LSZ）粉末阳极。毛细悬浮策略可以克服液态金属与其他成分的混溶性，从而产生自立且均匀的 LSZ 粉末阳极。锌粉上的纳米厚共晶镓铟（EGaIn）表层促进了锌沿 (002) 平面的水平生长，减轻了锌腐蚀和氢演化反应。因此，全电池（V2O5 阴极 ∥ LSZ 粉末阳极）在 1 A g-1 的快速电流速率下，经过 2000 次循环后，每次循环的容量保持率稳定在 99.99%，优于之前报道的水性锌全电池。

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Liquid Metal-Skinned Zn Powder Anodes Enabled by Capillary Suspension

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.

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来源期刊

ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment

CiteScore

31.20

自引率

5.00%

发文量

469

审稿时长

1 months

期刊介绍： ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format. ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology. The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.