Bo Pang , Wanting Chen , Gaohong He , Weiming Yu , Fujun Cui , Xiaoming Yan , Shouhai Zhang , Xuemei Wu
{"title":"醌类可转换酚羟基侧链为钒氧化还原液流电池构建高选择性离子导电通道","authors":"Bo Pang , Wanting Chen , Gaohong He , Weiming Yu , Fujun Cui , Xiaoming Yan , Shouhai Zhang , Xuemei Wu","doi":"10.1016/j.jpowsour.2024.235014","DOIUrl":null,"url":null,"abstract":"<div><p>The trade-off between proton conduction and vanadium permeability is a great challenge for ion conductive membrane to achieve high vanadium redox flow battery (VRFB) performance. Herein, the quinone convertible phenolic hydroxyl group side chain is proposed to endow Donnan effect and continuously narrow ion conductive channel to improve H<sup>+</sup>/V<sup>n +</sup> selectivity. Uniquely, phenol can be chemically converted into quinone of lower electronegativity in-situ in the strong acidic VRFB environment, which greatly increases the Zata potential (from 2.6 to 10.2 mV) and Donnan effect to repel vanadium ions. A high phenol hydroxyl group capacity with 5.43 mmol g<sup>−1</sup> can be achieved owing to the swelling restriction by the hydrogen bonding crosslinking between quinone and benzimidazole, which constructs small but densely distributed ion clusters and continuously narrow ion conductive channels for selective proton conduction. The quinone type polybenzimidazole membrane (PBIPhQ-5.43) presents low area resistance and vanadium permeability (0.25 Ω cm<sup>2</sup> and 1.3 × 10<sup>−9</sup> cm<sup>2</sup> s<sup>−1</sup>, 13.8 % and 99.6 % decreased, respectively, compared with that of Nafion 212). The VRFB exhibits excellent balance between energy efficiency (83.1 %) and discharge capacity decay (0.29 %/cycle) at 100 mA cm<sup>−2</sup>, far superior to that of Nafion 212 membrane (75.1 %, 0.71 %/cycle).</p></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":null,"pages":null},"PeriodicalIF":8.1000,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Quinone convertible phenolic hydroxyl group side chain to construct high selective ion conductive channel for vanadium redox flow battery\",\"authors\":\"Bo Pang , Wanting Chen , Gaohong He , Weiming Yu , Fujun Cui , Xiaoming Yan , Shouhai Zhang , Xuemei Wu\",\"doi\":\"10.1016/j.jpowsour.2024.235014\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The trade-off between proton conduction and vanadium permeability is a great challenge for ion conductive membrane to achieve high vanadium redox flow battery (VRFB) performance. Herein, the quinone convertible phenolic hydroxyl group side chain is proposed to endow Donnan effect and continuously narrow ion conductive channel to improve H<sup>+</sup>/V<sup>n +</sup> selectivity. Uniquely, phenol can be chemically converted into quinone of lower electronegativity in-situ in the strong acidic VRFB environment, which greatly increases the Zata potential (from 2.6 to 10.2 mV) and Donnan effect to repel vanadium ions. A high phenol hydroxyl group capacity with 5.43 mmol g<sup>−1</sup> can be achieved owing to the swelling restriction by the hydrogen bonding crosslinking between quinone and benzimidazole, which constructs small but densely distributed ion clusters and continuously narrow ion conductive channels for selective proton conduction. The quinone type polybenzimidazole membrane (PBIPhQ-5.43) presents low area resistance and vanadium permeability (0.25 Ω cm<sup>2</sup> and 1.3 × 10<sup>−9</sup> cm<sup>2</sup> s<sup>−1</sup>, 13.8 % and 99.6 % decreased, respectively, compared with that of Nafion 212). The VRFB exhibits excellent balance between energy efficiency (83.1 %) and discharge capacity decay (0.29 %/cycle) at 100 mA cm<sup>−2</sup>, far superior to that of Nafion 212 membrane (75.1 %, 0.71 %/cycle).</p></div>\",\"PeriodicalId\":377,\"journal\":{\"name\":\"Journal of Power Sources\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.1000,\"publicationDate\":\"2024-07-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Power Sources\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0378775324009662\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Power Sources","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0378775324009662","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Quinone convertible phenolic hydroxyl group side chain to construct high selective ion conductive channel for vanadium redox flow battery
The trade-off between proton conduction and vanadium permeability is a great challenge for ion conductive membrane to achieve high vanadium redox flow battery (VRFB) performance. Herein, the quinone convertible phenolic hydroxyl group side chain is proposed to endow Donnan effect and continuously narrow ion conductive channel to improve H+/Vn + selectivity. Uniquely, phenol can be chemically converted into quinone of lower electronegativity in-situ in the strong acidic VRFB environment, which greatly increases the Zata potential (from 2.6 to 10.2 mV) and Donnan effect to repel vanadium ions. A high phenol hydroxyl group capacity with 5.43 mmol g−1 can be achieved owing to the swelling restriction by the hydrogen bonding crosslinking between quinone and benzimidazole, which constructs small but densely distributed ion clusters and continuously narrow ion conductive channels for selective proton conduction. The quinone type polybenzimidazole membrane (PBIPhQ-5.43) presents low area resistance and vanadium permeability (0.25 Ω cm2 and 1.3 × 10−9 cm2 s−1, 13.8 % and 99.6 % decreased, respectively, compared with that of Nafion 212). The VRFB exhibits excellent balance between energy efficiency (83.1 %) and discharge capacity decay (0.29 %/cycle) at 100 mA cm−2, far superior to that of Nafion 212 membrane (75.1 %, 0.71 %/cycle).
期刊介绍:
The Journal of Power Sources is a publication catering to researchers and technologists interested in various aspects of the science, technology, and applications of electrochemical power sources. It covers original research and reviews on primary and secondary batteries, fuel cells, supercapacitors, and photo-electrochemical cells.
Topics considered include the research, development and applications of nanomaterials and novel componentry for these devices. Examples of applications of these electrochemical power sources include:
• Portable electronics
• Electric and Hybrid Electric Vehicles
• Uninterruptible Power Supply (UPS) systems
• Storage of renewable energy
• Satellites and deep space probes
• Boats and ships, drones and aircrafts
• Wearable energy storage systems