Design Principles for Dendrite Suppression with Porous Polymer/Aqueous Solution Hybrid Electrolyte for Zn Metal Anodes,ACS Energy Letters

当前位置： X-MOL 学术 › ACS Energy Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Design Principles for Dendrite Suppression with Porous Polymer/Aqueous Solution Hybrid Electrolyte for Zn Metal Anodes
ACS Energy Letters ( IF 19.3 ) Pub Date : 2020-06-26 , DOI: 10.1021/acsenergylett.0c01235
Zijian Hong ₁ , Zeeshan Ahmad ₁ , Venkatasubramanian Viswanathan ₁

Affiliation

Rechargeable zinc–metal batteries have attracted widespread attention recently as a potential substitute for lithium-ion batteries due to their low cost, large volumetric capacity, and capability to use a safe aqueous electrolyte. However, dendrite growth during charging results in degradation of battery performance and aggravates safety concerns. In this work, we use phase-field simulations to analyze the design space for a porous polymer/aqueous ZnSO₄ hybrid electrolyte. We show that dendrite growth could be suppressed, utilizing both the mechanical suppression effect from the polymer framework and the high diffusivity from the aqueous electrolyte. We identify some concrete directions to experimentally access these ranges of mechanical properties and porosity. As done in our previous work, we make all code available to spur growth of phase-field modeling for Zn-based rechargeable batteries.

中文翻译：

锌金属阳极多孔聚合物/水溶液混合电解质抑制枝晶的设计原理

作为锂离子电池的潜在替代品，可充电锌金属电池由于其低成本，大容量和使用安全的水性电解质的能力，最近引起了广泛的关注。但是，充电过程中枝晶的生长会导致电池性能下降，并加剧安全隐患。在这项工作中，我们使用相场模拟来分析多孔聚合物/ ZnSO ₄水溶液的设计空间混合电解质。我们表明，利用聚合物骨架的机械抑制作用和水性电解质的高扩散率，可以抑制枝晶的生长。我们确定了一些具体的方向，以实验方式获得这些范围的机械性能和孔隙率。正如我们之前的工作一样，我们提供了所有代码来刺激基于Zn的可充电电池的相场建模的增长。

更新日期：2020-08-14

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11