Repurposing the Industrial Dye Methylene Blue as an Active Component for Redox Flow Batteries,ChemElectroChem

当前位置： X-MOL 学术 › ChemElectroChem › 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.)

Repurposing the Industrial Dye Methylene Blue as an Active Component for Redox Flow Batteries
ChemElectroChem ( IF 3.5 ) Pub Date : 2018-08-30 , DOI: 10.1002/celc.201801097
Anjula M. Kosswattaarachchi ₁ , Timothy R. Cook ₁

Affiliation

Methylene blue is a common component of industrial wastewater in the textile industry. The redox properties of this environmentally damaging molecule make it suitable for use in the electrolyte solutions of aqueous redox flow batteries. Here, we carry out electrochemical analyses of aqueous methylene blue solutions to establish the dye as a pH tuneable, two‐electron redox transfer agent with fast transfer kinetics. Galvanostatic charge‐discharge experiments demonstrated ∼100 % coulombic efficiency for 50 cycles over seven days. Cycling performance was dependent on the membrane separator used. Cells containing an AMI‐7001 membrane showed a capacity decay with the state‐of‐charge falling to 56 % due to dye adsorption. Nafion NE1035 showed no adsorption nor membrane crossover. The combination of chemical and redox stability, and fast kinetics motivate the recycling of methylene blue wastewater as the basis for flow battery electrolyte solutions.

中文翻译：

重新使用工业染料亚甲蓝作为氧化还原液流电池的活性成分

亚甲蓝是纺织工业中工业废水的常见成分。这种对环境有害的分子的氧化还原特性使其适用于水性氧化还原液流电池的电解质溶液。在这里，我们对亚甲蓝水溶液进行电化学分析，以建立染料作为pH可调，具有快速转移动力学的双电子氧化还原转移剂。恒电流充放电实验表明，在7天的50个循环中，库仑效率达到100％。循环性能取决于所用的膜分离器。含有AMI-7001膜的电池由于染料的吸附而显示出容量衰减，充电状态降至56％。Nafion NE1035没有吸附，也没有膜穿透现象。化学和氧化还原稳定性的结合，

更新日期：2018-08-30

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