文献类型：期刊文献

英文题名：Synthesis and Electrochemical Properties of Hierarchical Porous (Nickel/Cobalt)-Carbonate-Hydroxide Structures

作者：Shu, Chuankang[1];Liang, Ying[1];Zhang, Zhen[1];Fang, Bin[1]

机构：[1]East China Univ Sci & Technol, Inst Nucl Technol & Applicat, Sch Sci, Shanghai 200237, Peoples R China

年份：2021

卷号：2021

期号：17

起止页码：1659

外文期刊名：EUROPEAN JOURNAL OF INORGANIC CHEMISTRY

收录：;EI(收录号：20231713977701);WOS:【SCI-EXPANDED(收录号:WOS:000641911900001)】；

语种：英文

外文关键词：Electrochemical properties; Hydrothermal synthesis; Mesoporous materials; Nanostructures; Transition metals

摘要：Hierarchical porous Ni-3(CO3)(OH)(4) and (NixCo1-x)(6)(CO3)(2)(OH)(8) .H2O (x=0, 1/3, 1/2, and 2/3) structures have been synthesized via a hydrothermal route. The chloride ions in the precursor play an important role in the morphology of (Ni,Co)(6)(CO3)(2)(OH)(8) .H2O. The formation mechanism and growth process of urchin-like (Ni,Co)(6)(CO3)(2)(OH)(8) .H2O structure was investigated by adjusting the reaction time. The electrochemical properties of the products depend on the chemical composition and surface property. Ni-3(CO3)(OH)(4) exhibits higher specific capacitance at a low current density due to its porous structure and larger specific surface area. However, its rate property and cycle stability are much poorer. Co-6(CO3)(2)(OH)(8) .H2O nanorod-assembled structure possesses better cyclic performance but lower specific capacitance. (Ni,Co)(6)(CO3)(2)(OH)(8) .H2O electrodes behave improved rate property and cycle stability in comparison with Ni-3(CO3)(OH)(4), and higher specific capacitance than Co-6(CO3)(2)(OH)(8) .H2O, which can be attributed to the synergistic effect of bimetal species and unique surface property.