{"title":"电沉积电位调整使α-Co(OH)2的同步制备从具有较大层间距的α-Co(OH)2恢复到β-Co(OH)2","authors":"Xiangyu Wu, Meiqi Liu, Zhou Jiang, Jingjuan Li, Kexin Song, Aofei Wei, Detian Meng, Taowen Dong, Zhenhai Gao, Wei Zhang, Weitao Zheng","doi":"10.1002/batt.202400699","DOIUrl":null,"url":null,"abstract":"<p>Electrodeposition is a popular method for preparing α-Co(OH)<sub>2</sub> as an electrode material for electrochemical energy storage. However, the preparation of technically important β-Co(OH)<sub>2</sub> through electrodeposition remains lacking thus far. Herein, we successfully prepared Co(OH)<sub>2</sub> in two phases, α- and β-Co(OH)<sub>2</sub>, by simply adjusting the electrodeposition potentials, as evidenced by a package of microcopy and spectroscopy analysis. Benefited from a delicate embedding and sectioning technique that may inhibit the loss of interlayer water in microscopy analysis, we find the presence of Co tetrahedron in the interlayer of α-Co(OH)<sub>2</sub> results in a large interlayer spacing of 7.2 Å for the crystal plane (003) compared to β-Co(OH)<sub>2</sub>, as well as a higher chemical valence of cobalt in electrodeposited β-Co(OH)<sub>2</sub>. The large interlayer spacing creates wider ion channels and more active storage sites for effective energy storage. Consequently, the α-Co(OH)<sub>2</sub> electrode exhibits more competitive electrochemical performance compared to its β counterpart.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 6","pages":""},"PeriodicalIF":4.7000,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Electrodeposition-Potential Tuning Rejuvenates the Concurrent Preparation from α-Co(OH)2 with Larger Interlayer-Spacings to β-Co(OH)2\",\"authors\":\"Xiangyu Wu, Meiqi Liu, Zhou Jiang, Jingjuan Li, Kexin Song, Aofei Wei, Detian Meng, Taowen Dong, Zhenhai Gao, Wei Zhang, Weitao Zheng\",\"doi\":\"10.1002/batt.202400699\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Electrodeposition is a popular method for preparing α-Co(OH)<sub>2</sub> as an electrode material for electrochemical energy storage. However, the preparation of technically important β-Co(OH)<sub>2</sub> through electrodeposition remains lacking thus far. Herein, we successfully prepared Co(OH)<sub>2</sub> in two phases, α- and β-Co(OH)<sub>2</sub>, by simply adjusting the electrodeposition potentials, as evidenced by a package of microcopy and spectroscopy analysis. Benefited from a delicate embedding and sectioning technique that may inhibit the loss of interlayer water in microscopy analysis, we find the presence of Co tetrahedron in the interlayer of α-Co(OH)<sub>2</sub> results in a large interlayer spacing of 7.2 Å for the crystal plane (003) compared to β-Co(OH)<sub>2</sub>, as well as a higher chemical valence of cobalt in electrodeposited β-Co(OH)<sub>2</sub>. The large interlayer spacing creates wider ion channels and more active storage sites for effective energy storage. Consequently, the α-Co(OH)<sub>2</sub> electrode exhibits more competitive electrochemical performance compared to its β counterpart.</p>\",\"PeriodicalId\":132,\"journal\":{\"name\":\"Batteries & Supercaps\",\"volume\":\"8 6\",\"pages\":\"\"},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2024-12-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Batteries & Supercaps\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/batt.202400699\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ELECTROCHEMISTRY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Batteries & Supercaps","FirstCategoryId":"88","ListUrlMain":"https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/batt.202400699","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}
Electrodeposition-Potential Tuning Rejuvenates the Concurrent Preparation from α-Co(OH)2 with Larger Interlayer-Spacings to β-Co(OH)2
Electrodeposition is a popular method for preparing α-Co(OH)2 as an electrode material for electrochemical energy storage. However, the preparation of technically important β-Co(OH)2 through electrodeposition remains lacking thus far. Herein, we successfully prepared Co(OH)2 in two phases, α- and β-Co(OH)2, by simply adjusting the electrodeposition potentials, as evidenced by a package of microcopy and spectroscopy analysis. Benefited from a delicate embedding and sectioning technique that may inhibit the loss of interlayer water in microscopy analysis, we find the presence of Co tetrahedron in the interlayer of α-Co(OH)2 results in a large interlayer spacing of 7.2 Å for the crystal plane (003) compared to β-Co(OH)2, as well as a higher chemical valence of cobalt in electrodeposited β-Co(OH)2. The large interlayer spacing creates wider ion channels and more active storage sites for effective energy storage. Consequently, the α-Co(OH)2 electrode exhibits more competitive electrochemical performance compared to its β counterpart.
期刊介绍：
Electrochemical energy storage devices play a transformative role in our societies. They have allowed the emergence of portable electronics devices, have triggered the resurgence of electric transportation and constitute key components in smart power grids. Batteries & Supercaps publishes international high-impact experimental and theoretical research on the fundamentals and applications of electrochemical energy storage. We support the scientific community to advance energy efficiency and sustainability.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
