A Stability Improvement of Rechargeable Zn-air Batteries by Introducing Thiourea and Polyethylenimine as Electrolyte Additives

2018 5th International Conference on Electric Vehicular Technology (ICEVT) Pub Date : 2018-10-01 DOI:10.1109/ICEVT.2018.8628457

A. Sumboja, P. Sambegoro

{"title":"A Stability Improvement of Rechargeable Zn-air Batteries by Introducing Thiourea and Polyethylenimine as Electrolyte Additives","authors":"A. Sumboja, P. Sambegoro","doi":"10.1109/ICEVT.2018.8628457","DOIUrl":null,"url":null,"abstract":"Energy storage devices, such as batteries are expected to store large amount of energy while delivering the energy rapidly. Particularly, Zn-air battery offers high specific energy and low production cost. We present a method to improve the cycle life of the rechargeable Zn-air battery by introducing additives into the alkaline electrolyte. Thiourea and polyethylenimine are chosen as the additive to suppress the growth of Zn dendrite during the charging process. Combination of thiourea and polyethylenimine as electrolyte additives is shown to produce smooth and compact Zn deposits. As a result, charging profile and cycling stability of rechargeable Zn-air battery with thiourea and polyethylenimine as electrolyte additives are improved as compared to the Zn-air battery without any electrolyte additives. The battery with electrolyte additives shows a stable performance for up to 250 discharge/charge cycles, which is higher than the battery without any electrolyte additives (187 cycles). This study illustrates a method to design a robust electrolyte system for a long cycle life of rechargeable Zn-air battery.","PeriodicalId":6659,"journal":{"name":"2018 5th International Conference on Electric Vehicular Technology (ICEVT)","volume":"11 1","pages":"128-131"},"PeriodicalIF":0.0000,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 5th International Conference on Electric Vehicular Technology (ICEVT)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICEVT.2018.8628457","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 1

Abstract

Energy storage devices, such as batteries are expected to store large amount of energy while delivering the energy rapidly. Particularly, Zn-air battery offers high specific energy and low production cost. We present a method to improve the cycle life of the rechargeable Zn-air battery by introducing additives into the alkaline electrolyte. Thiourea and polyethylenimine are chosen as the additive to suppress the growth of Zn dendrite during the charging process. Combination of thiourea and polyethylenimine as electrolyte additives is shown to produce smooth and compact Zn deposits. As a result, charging profile and cycling stability of rechargeable Zn-air battery with thiourea and polyethylenimine as electrolyte additives are improved as compared to the Zn-air battery without any electrolyte additives. The battery with electrolyte additives shows a stable performance for up to 250 discharge/charge cycles, which is higher than the battery without any electrolyte additives (187 cycles). This study illustrates a method to design a robust electrolyte system for a long cycle life of rechargeable Zn-air battery.

查看原文本刊更多论文

引入硫脲和聚乙烯亚胺作为电解液添加剂提高可充电锌空气电池的稳定性

储能设备，如电池，有望在快速传输能量的同时存储大量能量。特别是锌空气电池具有比能高、生产成本低的特点。提出了一种通过在碱性电解液中引入添加剂来提高可充电锌空气电池循环寿命的方法。在充电过程中，选择硫脲和聚乙烯亚胺作为抑制Zn枝晶生长的添加剂。硫脲和聚乙烯亚胺作为电解质添加剂的组合可以产生光滑致密的锌镀层。结果表明，与不添加任何电解质添加剂的锌空气电池相比，添加硫脲和聚乙烯亚胺的可充电锌空气电池的充电曲线和循环稳定性得到了改善。添加电解质添加剂的电池在250次充放电循环中表现出稳定的性能，高于不添加电解质添加剂的电池(187次循环)。本研究阐述了一种设计可充电锌空气电池长循环寿命的稳健电解质体系的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2018 5th International Conference on Electric Vehicular Technology (ICEVT)

自引率

0.00%

发文量