化工学报2015，Vol.66Issue(12)：5088-5095,8.DOI:10.11949/j.issn.0438-1157.20150624
纳米β-Ni(OH)2的制备及其储锂性能
Preparation and lithium ion storage performance of nano-sizedβ-Ni(OH)2
摘要
Abstract
Ni(OH)2 sample is prepared by chemical precipitation method with Ni(NO3)2·6H2O and NaOH as raw materials. X-ray diffraction (XRD) and field emission scanning electron microscope (FESEM) analysis reveal that the sample isβ-Ni(OH)2 with sheet-like hierarchical nanostructure. Cyclic voltammograms (CV) and charge-discharge tests are performed to study the lithium ion storage performance of theβ-Ni(OH)2 sample. The results show that the preparedβ-Ni(OH)2 sample has a very high lithium ion storage activity. For example, at a charge-discharge current density of 50 mA·g-1, the discharge capacity of the third cycle for the preparedβ-Ni(OH)2 is higher than 1550 mA·h·g-1. The carbon content in electrode has a great influence on both the cyclic stability and rate performance of theβ-Ni(OH)2 sample. The mechanism of carbon content on lithium storage performance of theβ-Ni(OH)2 sample is analyzed by electrochemical impedance spectroscopy (EIS) tests.关键词
氢氧化镍/锂离子电池/纳米材料/纳米结构/电化学Key words
nickel hydroxide/lithium ion batteries/nanomaterials/nanostructure/electrochemistry分类
化学化工引用本文复制引用
李延伟,潘观林,姚金环,李世玉,张灵志..纳米β-Ni(OH)2的制备及其储锂性能[J].化工学报,2015,66(12):5088-5095,8.基金项目
国家自然科学基金项目(21263003,51204061,51464009) （21263003,51204061,51464009）
supported by the National Natural Science Foundation of China (21263003, 51204061, 51464009), the Natural Science Foundation of Guangxi Province (2012GXNSFAA053026, 2014GXNSFBA118238) and the Key Laboratory of Renewable Energy, Chinese Academy of Sciences (y507k61001). （21263003, 51204061, 51464009）
