High-Voltage Operation of a V2O5 Cathode in a Concentrated Gel Polymer Electrolyte for High-Energy Aqueous Zinc Batteries,ACS Applied Materials & Interfaces

当前位置： X-MOL 学术 › ACS Appl. Mater. Interfaces › 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.)

High-Voltage Operation of a V2O5 Cathode in a Concentrated Gel Polymer Electrolyte for High-Energy Aqueous Zinc Batteries
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-03-19 , DOI: 10.1021/acsami.0c02102
Huang Zhang _{1,

2,

3} , Xu Liu _{2,

3} , Huihua Li _{2,

3} , Bingsheng Qin _{2,

3} , Stefano Passerini _{2,

3}

Affiliation

Gel-type polymer electrolytes are very promising to replace liquid electrolytes, addressing the leakage concerns in batteries. In this work, we report a concentrated gel polymer electrolyte for aqueous zinc-metal batteries, which manifests superior Zn stripping/plating reversibility and electrolyte stability, combined with a promising electrochemical stability window and robust water-retention ability. Quasi-solid-state Zn/V₂O₅ batteries employing such an electrolyte reach a specific energy of 326 W h kg^–1 at 20 mA g^–1 based on the cathode mass and a capacity retention of 93% over 600 cycles at 500 mA g^–1. Moreover, the cell performs well in the 0–40 °C temperature range without significant capacity loss. These results represent important steps toward the development of high-energy aqueous zinc batteries.

中文翻译：

V ₂ O ₅阴极在高能水性锌电池的浓缩凝胶聚合物电解质中的高压操作

凝胶型聚合物电解质有望取代液体电解质，解决了电池中的泄漏问题。在这项工作中，我们报告了一种用于水性锌金属电池的浓缩凝胶聚合物电解质，它表现出优异的Zn剥离/镀覆可逆性和电解质稳定性，并具有良好的电化学稳定性窗口和强大的保水能力。采用这种电解质的准固态Zn / V ₂ O ₅电池在20 mA g ^–1的条件下达到326 W h kg ^–1的比能，基于阴极质量，在500次600次循环中的容量保持率为93％ mA g ^–1。此外，该电池在0–40°C的温度范围内性能良好，而容量损失不明显。这些结果代表了开发高能水性锌电池的重要步骤。

更新日期：2020-03-20

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南