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An ion redistributor enabled by cost-effective weighing paper interlayer for dendrite free aqueous zinc-ion battery
Energy Storage Materials ( IF 20.4 ) Pub Date : 2022-06-02 , DOI: 10.1016/j.ensm.2022.06.001
Yi Guo , Wenlong Cai , Yi Lin , Yueying Zhang , Song Luo , Kaixin Huang , Hao Wu , Yun Zhang

When we talk about the anode of aqueous zinc ion batteries (AZIBs), inevitably, it comes up with zinc dendrites, side reactions, and the resulting poor electrochemical performances. Herein, a Zn2+ redistributor is constructed by inserting commercial weighing paper (WP) between the zinc anode and separator as an interlayer to eliminate dendrites. The large water-locking ability of WP assists in terminating side reactions, while plenteous functional –O groups contribute to adsorb Zn2+ and simultaneously facilitate their desolvation process. Consequently, the WP-covered electrode exhibits highly reversible plating/stripping behavior with longevity life over 2400 h and 800 h at the current densities of 1 and 9 mA cm−2, respectively. Intriguingly, even in the case of lean electrolyte (30 μL) and cost-effective separators (commercial filter papers), the battery with WP sustains over 2000 h. This cost-effective and high-performing interlayer engineering is considered to shed light on the practical application of AZIBs.



中文翻译:

一种用于无枝晶水系锌离子电池的具有成本效益的称重纸中间层的离子再分配器

当我们谈论水系锌离子电池(AZIBs)的负极时,不可避免地会出现锌枝晶、副反应以及由此产生的较差的电化学性能。在此,通过在锌阳极和隔膜之间插入商业称重纸(WP)作为中间层以消除枝晶,构建了 Zn 2+再分布器。WP 的大锁水能力有助于终止副反应,而丰富的官能团-O 基团有助于吸附 Zn 2+并同时促进它们的去溶剂化过程。因此,WP 覆盖的电极表现出高度可逆的电镀/剥离行为,在 1 和 9 mA cm -2的电流密度下寿命超过 2400 小时和 800 小时。, 分别。有趣的是,即使在贫电解质(30 μL)和具有成本效益的隔膜(商业滤纸)的情况下,具有 WP 的电池也能维持超过 2000 小时。这种具有成本效益和高性能的夹层工程被认为有助于阐明 AZIB 的实际应用。

更新日期:2022-06-02
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