Unveiling Electrode–Electrolyte Interface Dynamics for Aqueous Zn Batteries

IF 19.3 1区材料科学 Q1 CHEMISTRY, PHYSICAL

ACS Energy Letters Pub Date : 2025-04-20 DOI:10.1021/acsenergylett.5c00445

Xuesong Zhao, Mengdie Yan, Jialu Bi, Kangren Kong, Liqi Liu, Liya Chen, Yihong Jin, Mengqi Zhou, Chaojiang Niu, Zhaoming Liu, Ruikang Tang, Liguang Wang, Jun Lu, Huilin Pan

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Abstract

Aqueous Zn batteries are a promising solution for energy storage due to their safety and cost-effectiveness. However, conventional Zn anodes face challenges such as slow interfacial kinetics and structural collapse at high rates and Zn utilization. Here, we design an integrated Zn anode with an embedded heterophase boundary framework (HPF-Zn) that could regulate the chemical environment and charge transport kinetics for uniform, fast Zn deposition. Well-designed in situ Raman spectra clearly visualize the dynamic interface evolution under various conditions, confirming rapid Zn²⁺ replenishment at the interface for HPF-Zn anode. Consequently, the HPF-Zn anode achieves 60× the cycle life of conventional Zn anodes with nearly 100% Zn utilization. Zn||V₂O₅ full cells exhibit excellent cycling stability, retaining 80% capacity over 5500 cycles (N/P = 5.6) and 2500 cycles (N/P = 3.2). Moreover, Ah-level pouch cells demonstrate superior durability. This work advances our understanding of dynamic interfaces and highlights a strategy for stabilizing electrode–electrolyte interfaces via heterophase boundary design.

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揭示水锌电池的电极-电解质界面动力学

由于其安全性和成本效益，水锌电池是一种很有前途的储能解决方案。然而，传统的锌阳极在高速率和高锌利用率下面临着界面动力学缓慢和结构崩溃等挑战。在这里，我们设计了一种具有嵌入式异相边界框架（HPF-Zn）的集成Zn阳极，该阳极可以调节化学环境和电荷传输动力学，以实现均匀，快速的Zn沉积。精心设计的原位拉曼光谱清晰地显示了各种条件下界面的动态演变，证实了HPF-Zn阳极界面上Zn2+的快速补充。因此，HPF-Zn阳极的循环寿命是传统锌阳极的60倍，锌利用率接近100%。Zn||V2O5全电池表现出优异的循环稳定性，在5500次循环（N/P = 5.6）和2500次循环（N/P = 3.2）中保持80%的容量。此外，ah级袋状电池表现出优异的耐用性。这项工作促进了我们对动态界面的理解，并强调了通过异相边界设计稳定电极-电解质界面的策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.