Recyclable and Ultrafast Fabrication of Zinc Oxide Interface Layer Enabling Highly Reversible Dendrite-Free Zn Anode,ACS Energy Letters

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Recyclable and Ultrafast Fabrication of Zinc Oxide Interface Layer Enabling Highly Reversible Dendrite-Free Zn Anode
ACS Energy Letters ( IF 19.3 ) Pub Date : 2023-01-30 , DOI: 10.1021/acsenergylett.2c02735
Chenhui Ma ₁ , Konghua Yang ₂ , Shibo Zhao ₁ , Yu Xie ₁ , Chunbao Liu ₂ , Nan Chen ₁ , Chunzhong Wang ₁ , Deping Wang ₃ , Dong Zhang ₁ , Ze Xiang Shen ₄ , Fei Du ₁

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The surface coating is effective in suppressing Zn dendrite and side reactions, while the existing processing methods employ complex procedures and expensive equipment. Here, we develop an I₂-assisted processing method to in situ fabricate the ZnO interface layer on the Zn anode (denoted as IAZO). This strategy features the sustainability that the raw materials, I₂, could be reused with a recovery ratio of 67.25% and rapid processing time that only takes 5 min. The IAZO anode achieves an extraordinary cycle life of over 3100 h and a high depth of discharge of 52%, much better than the original Zn anode (less than 220 h and 1.7%). Density functional theory calculations and COMSOL simulation reveal that the IAZO anode has a high binding energy with Zn²⁺, which contributes to the uniform distribution of the electric field and Zn²⁺ flux.

中文翻译：

可回收和超快制造氧化锌界面层，实现高度可逆的无枝晶锌阳极

表面涂层可有效抑制锌枝晶和副反应，而现有的加工方法工序复杂，设备昂贵。在这里，我们开发了一种 I ₂辅助处理方法，以在 Zn 阳极（表示为 IAZO）上原位制造 ZnO 界面层。该策略具有可持续性，即原材料 I ₂可以重复使用，回收率为 67.25%，处理时间仅需 5 分钟。IAZO 阳极实现了超过 3100 小时的非凡循环寿命和 52% 的高放电深度，远优于原始锌阳极（小于 220 小时和 1.7%）。密度泛函理论计算和 COMSOL 模拟表明 IAZO 阳极与 Zn 具有高结合能²⁺，有助于电场和Zn ²⁺通量的均匀分布。

更新日期：2023-01-30

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