{"title":"利用多氧化态溴(Br-/BrO-/BrO3-)氧化还原化学的无毒高压锌-溴电池","authors":"Mingyang Cao, Mingqiang Li, Weiye Bai, Godlaveeti Sreemivasa Kumar, Ning Wang, Yanheng Yin","doi":"10.1039/d5ta04869a","DOIUrl":null,"url":null,"abstract":"Zinc-bromine batteries suffer from significant bromine gas leakage, posing serious safety hazards. This work introduces a novel Br-/BrO-/BrO3- triple redox system within alkaline zinc-bromide batteries. This system facilitates the electrochemical conversion of Br-/BrO3- to the mediator species BrO- via murexide organic chelation under alkaline conditions. The coordinated three-phase redox transition enables a multi-electron transfer mechanism, achieving a discharge plateau of 2.0 V while effectively suppressing Br2 release. Through a synergistic electrolyte design incorporating acidic substances (oxalic acid) and urea-based complexes (murexide), bromine is confined to non-volatile ionic states, effectively mitigating persistent bromine leakage. The optimized system delivers an area capacity of 2.2 mAh/cm2 and maintains 83% capacity retention over 800 cycles, demonstrating the practical viability of complete bromine containment in aqueous alkaline batteries. This system-level approach advances fundamental principles for designing multi-electron redox pairs in aqueous batteries and provides key insights into halogen-mediated reaction mechanisms relevant to electrocatalysis and environmental remediation.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"6 1","pages":""},"PeriodicalIF":9.5000,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A Nontoxic, High-Voltage Zinc-Bromine Battery Utilizing Multi-Oxidation-State Bromine (Br-/BrO-/BrO3-) Redox Chemistry\",\"authors\":\"Mingyang Cao, Mingqiang Li, Weiye Bai, Godlaveeti Sreemivasa Kumar, Ning Wang, Yanheng Yin\",\"doi\":\"10.1039/d5ta04869a\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Zinc-bromine batteries suffer from significant bromine gas leakage, posing serious safety hazards. This work introduces a novel Br-/BrO-/BrO3- triple redox system within alkaline zinc-bromide batteries. This system facilitates the electrochemical conversion of Br-/BrO3- to the mediator species BrO- via murexide organic chelation under alkaline conditions. The coordinated three-phase redox transition enables a multi-electron transfer mechanism, achieving a discharge plateau of 2.0 V while effectively suppressing Br2 release. Through a synergistic electrolyte design incorporating acidic substances (oxalic acid) and urea-based complexes (murexide), bromine is confined to non-volatile ionic states, effectively mitigating persistent bromine leakage. The optimized system delivers an area capacity of 2.2 mAh/cm2 and maintains 83% capacity retention over 800 cycles, demonstrating the practical viability of complete bromine containment in aqueous alkaline batteries. This system-level approach advances fundamental principles for designing multi-electron redox pairs in aqueous batteries and provides key insights into halogen-mediated reaction mechanisms relevant to electrocatalysis and environmental remediation.\",\"PeriodicalId\":82,\"journal\":{\"name\":\"Journal of Materials Chemistry A\",\"volume\":\"6 1\",\"pages\":\"\"},\"PeriodicalIF\":9.5000,\"publicationDate\":\"2025-08-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Chemistry A\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1039/d5ta04869a\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"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 Materials Chemistry A","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1039/d5ta04869a","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Zinc-bromine batteries suffer from significant bromine gas leakage, posing serious safety hazards. This work introduces a novel Br-/BrO-/BrO3- triple redox system within alkaline zinc-bromide batteries. This system facilitates the electrochemical conversion of Br-/BrO3- to the mediator species BrO- via murexide organic chelation under alkaline conditions. The coordinated three-phase redox transition enables a multi-electron transfer mechanism, achieving a discharge plateau of 2.0 V while effectively suppressing Br2 release. Through a synergistic electrolyte design incorporating acidic substances (oxalic acid) and urea-based complexes (murexide), bromine is confined to non-volatile ionic states, effectively mitigating persistent bromine leakage. The optimized system delivers an area capacity of 2.2 mAh/cm2 and maintains 83% capacity retention over 800 cycles, demonstrating the practical viability of complete bromine containment in aqueous alkaline batteries. This system-level approach advances fundamental principles for designing multi-electron redox pairs in aqueous batteries and provides key insights into halogen-mediated reaction mechanisms relevant to electrocatalysis and environmental remediation.
期刊介绍:
The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.