{"title":"通过溶剂辅助高锰酸盐还原实现价控氧化锰,用于先进的锌离子水电池","authors":"","doi":"10.1016/j.est.2024.114041","DOIUrl":null,"url":null,"abstract":"<div><div>Manganese oxide-based cathodes (MnO<sub>x</sub>) play a pivotal role in advancing aqueous Zinc-Ion batteries (AZIB) due to their high theoretical capacity, low cost and environmental friendliness. However, given the MnO<sub>x</sub>'s diverse structural, valence and textural properties, it is challenging to pinpoint the ideal manganese oxide material type and optimize simple and tunable synthesis routes to achieve great capacity retention and rate capability properties. In this work, we develop for the first time a synthesis method controlling the crystallization pathways and valence properties of MnO<sub>x</sub> materials through permanganate reduction using different reducing agents (Ethanol and Propanal) followed by heat treatment under 500 °C, thus achieving the synthesis of multivalent E500-MnO<sub>x</sub> (MnO<sub>2</sub>) and Trivalent P500-MnO<sub>x</sub> (Mn<sub>2</sub>O<sub>3</sub>). As cathode materials in AZIB, P500-MnO<sub>x</sub> reached a specific capacity of 315 mAh·g<sup>−1</sup> without any apparent capacity decay, while E500-MnO<sub>x</sub> showed a lower specific capacity of 150 mAh·g<sup>−1</sup> at 100 mA·g<sup>−1</sup> with a capacity retention of only 65 %. Through Ex-Situ XRD and SEM imaging, P500-MnO<sub>x</sub> exhibited a reversible cycling mechanism compared to its E500-MnO<sub>x</sub> counterpart which had preoccupied insertion sites.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":null,"pages":null},"PeriodicalIF":8.9000,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Valence-controlled manganese oxide by solvent-assisted permanganate reduction for advanced aqueous zinc-ion batteries\",\"authors\":\"\",\"doi\":\"10.1016/j.est.2024.114041\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Manganese oxide-based cathodes (MnO<sub>x</sub>) play a pivotal role in advancing aqueous Zinc-Ion batteries (AZIB) due to their high theoretical capacity, low cost and environmental friendliness. However, given the MnO<sub>x</sub>'s diverse structural, valence and textural properties, it is challenging to pinpoint the ideal manganese oxide material type and optimize simple and tunable synthesis routes to achieve great capacity retention and rate capability properties. In this work, we develop for the first time a synthesis method controlling the crystallization pathways and valence properties of MnO<sub>x</sub> materials through permanganate reduction using different reducing agents (Ethanol and Propanal) followed by heat treatment under 500 °C, thus achieving the synthesis of multivalent E500-MnO<sub>x</sub> (MnO<sub>2</sub>) and Trivalent P500-MnO<sub>x</sub> (Mn<sub>2</sub>O<sub>3</sub>). As cathode materials in AZIB, P500-MnO<sub>x</sub> reached a specific capacity of 315 mAh·g<sup>−1</sup> without any apparent capacity decay, while E500-MnO<sub>x</sub> showed a lower specific capacity of 150 mAh·g<sup>−1</sup> at 100 mA·g<sup>−1</sup> with a capacity retention of only 65 %. Through Ex-Situ XRD and SEM imaging, P500-MnO<sub>x</sub> exhibited a reversible cycling mechanism compared to its E500-MnO<sub>x</sub> counterpart which had preoccupied insertion sites.</div></div>\",\"PeriodicalId\":15942,\"journal\":{\"name\":\"Journal of energy storage\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.9000,\"publicationDate\":\"2024-10-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of energy storage\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2352152X24036272\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of energy storage","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352152X24036272","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
Valence-controlled manganese oxide by solvent-assisted permanganate reduction for advanced aqueous zinc-ion batteries
Manganese oxide-based cathodes (MnOx) play a pivotal role in advancing aqueous Zinc-Ion batteries (AZIB) due to their high theoretical capacity, low cost and environmental friendliness. However, given the MnOx's diverse structural, valence and textural properties, it is challenging to pinpoint the ideal manganese oxide material type and optimize simple and tunable synthesis routes to achieve great capacity retention and rate capability properties. In this work, we develop for the first time a synthesis method controlling the crystallization pathways and valence properties of MnOx materials through permanganate reduction using different reducing agents (Ethanol and Propanal) followed by heat treatment under 500 °C, thus achieving the synthesis of multivalent E500-MnOx (MnO2) and Trivalent P500-MnOx (Mn2O3). As cathode materials in AZIB, P500-MnOx reached a specific capacity of 315 mAh·g−1 without any apparent capacity decay, while E500-MnOx showed a lower specific capacity of 150 mAh·g−1 at 100 mA·g−1 with a capacity retention of only 65 %. Through Ex-Situ XRD and SEM imaging, P500-MnOx exhibited a reversible cycling mechanism compared to its E500-MnOx counterpart which had preoccupied insertion sites.
期刊介绍:
Journal of energy storage focusses on all aspects of energy storage, in particular systems integration, electric grid integration, modelling and analysis, novel energy storage technologies, sizing and management strategies, business models for operation of storage systems and energy storage developments worldwide.