Advanced PEI/PAN Membrane to Suppress Zinc Dendrite Growth in Zinc Metal Batteries.

IF 3.5 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Chemistry - An Asian Journal Pub Date : 2024-09-04 DOI:10.1002/asia.202400828

Arshad Hussain, Mostafa M Mohamed, Muhammad Omer Aijaz, Mohammad Rezaul Karim, Atif Saeed Alzahrani, Md Abdul Aziz

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Abstract

Aqueous zinc-ion batteries (AZIBs) are a potential new technology in energy storage due to their high energy density, affordability, and environmental friendliness. Unchecked zinc dendrite formation during cycling still hinders the development of AZIBs, resulting in an unstable interface, a short cycling life, a considerable capacity decline, and security issues. Herein, we demonstrate a novel nanofiber membrane based on a polyethylenimine-polyacrylonitrile (PEI-PAN) polymer produced by electrospinning with entangled nanofibers for AZIBs applications. The as-fabricated PEI/PAN membrane has a porous structure that is homogeneous, tortuous, and linked, with high porosity and superior electrolyte wettability. The PEI/PAN membrane has good thermal stability at 200 °C and high ionic conductivity of up to 5.3 x 10-4 S cm-1. This membrane provides Zn/Zn symmetric cells with an ultralong cycle life of over 250 hours at 3 mA cm-2. Additionally, MnO2/Zn cells outperforms commercial filter paper in terms of cycle stability and rate performance. This work demonstrates a simple technique for fabricating advanced nanofiber membranes for AZIBs to modify Zn2+ deposition behavior and improve Zn dendrite resistance.

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抑制锌金属电池中锌枝晶生长的先进 PEI/PAN 膜。

锌离子水电池（AZIBs）具有能量密度高、经济实惠和环保等优点，是一种潜在的新型储能技术。循环过程中锌枝晶的形成如果得不到控制，仍会阻碍 AZIB 的发展，导致界面不稳定、循环寿命短、容量大幅下降以及安全性问题。在此，我们展示了一种新型纳米纤维膜，该膜基于聚乙烯亚胺-聚丙烯腈（PEI-PAN）聚合物，通过电纺丝产生缠结纳米纤维，可用于 AZIBs。制成的 PEI/PAN 膜具有均匀、迂回和连通的多孔结构，孔隙率高，电解质浸润性优异。PEI/PAN 膜在 200 °C 下具有良好的热稳定性，离子导电率高达 5.3 x 10-4 S cm-1。这种膜为 Zn/Zn 对称电池提供了超长的循环寿命，在 3 mA cm-2 的条件下可使用 250 小时以上。此外，MnO2/Zn 电池在循环稳定性和速率性能方面优于商用滤纸。这项工作展示了一种用于制造 AZIB 先进纳米纤维膜的简单技术，可改变 Zn2+ 沉积行为并提高抗 Zn 树枝的能力。

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来源期刊

Chemistry - An Asian Journal 化学-化学综合

CiteScore

7.00

自引率

2.40%

发文量

535

审稿时长

1.3 months

期刊介绍： Chemistry—An Asian Journal is an international high-impact journal for chemistry in its broadest sense. The journal covers all aspects of chemistry from biochemistry through organic and inorganic chemistry to physical chemistry, including interdisciplinary topics. Chemistry—An Asian Journal publishes Full Papers, Communications, and Focus Reviews. A professional editorial team headed by Dr. Theresa Kueckmann and an Editorial Board (headed by Professor Susumu Kitagawa) ensure the highest quality of the peer-review process, the contents and the production of the journal. Chemistry—An Asian Journal is published on behalf of the Asian Chemical Editorial Society (ACES), an association of numerous Asian chemical societies, and supported by the Gesellschaft Deutscher Chemiker (GDCh, German Chemical Society), ChemPubSoc Europe, and the Federation of Asian Chemical Societies (FACS).