Highly Reversible Zn Metal Anodes Enabled by Increased Nucleation Overpotential

Zhengqiang Hu, Fengling Zhang, Anbin Zhou, Xin Hu, Qiaoyi Yan, Yuhao Liu, Faiza Arshad, Zhujie Li, Renjie Chen*, Feng Wu, Li Li*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

55 引用 (Scopus)

摘要

Dendrite formation severely compromises further development of zinc ion batteries. Increasing the nucleation overpotential plays a crucial role in achieving uniform deposition of metal ions. However, this strategy has not yet attracted enough attention from researchers to our knowledge. Here, we propose that thermodynamic nucleation overpotential of Zn deposition can be boosted through complexing agent and select sodium L-tartrate (Na-L) as example. Theoretical and experimental characterization reveals L-tartrate anion can partially replace H2O in the solvation sheath of Zn2+, increasing de-solvation energy. Concurrently, the Na+ could absorb on the surface of Zn anode preferentially to inhibit the deposition of Zn2+ aggregation. In consequence, the overpotential of Zn deposition could increase from 32.2 to 45.1 mV with the help of Na-L. The Zn-Zn cell could achieve a Zn utilization rate of 80% at areal capacity of 20 mAh cm−2. Zn-LiMn2O4 full cell with Na-L additive delivers improved stability than that with blank electrolyte. This study also provides insight into the regulation of nucleation overpotential to achieve homogeneous Zn deposition. [Figure not available: see fulltext.]

源语言英语
文章编号171
期刊Nano-Micro Letters
15
1
DOI
出版状态已出版 - 12月 2023

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Hu, Z., Zhang, F., Zhou, A., Hu, X., Yan, Q., Liu, Y., Arshad, F., Li, Z., Chen, R., Wu, F., & Li, L. (2023). Highly Reversible Zn Metal Anodes Enabled by Increased Nucleation Overpotential. Nano-Micro Letters, 15(1), 文章 171. https://doi.org/10.1007/s40820-023-01136-z