Structure, morphology and electrochemical performance of Zn-doped [Ni4Al(OH)10]OH

被引：29

作者：

Gao, Xiaorui ^{[1
]}

Lei, Lixu ^{[1
]}

Hu, Meng ^{[1
]}

Qin, Liwei ^{[1
]}

Sun, Yueming ^{[1
]}

机构：

[1] Southeast Univ, Sch Chem & Chem Engn, Nanjing 211189, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2009年 / 191卷 / 02期

关键词：

Layered double hydroxides; Electrochemical performance; Current density; Discharge capacity; LAYERED DOUBLE HYDROXIDE; ALPHA-NICKEL HYDROXIDE; ALKALINE RECHARGEABLE CELLS; CLAY-MODIFIED ELECTRODES; HYDROTHERMAL SYNTHESIS; SUBSTITUTED ALPHA-NI(OH)(2); SECONDARY CELLS; NI(OH)(2); FILMS; ZINC;

D O I：

10.1016/j.jpowsour.2009.02.055

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

A layered double hydroxide [Ni4Al(OH)(10)]OH was doped with different amounts of Zn2+ by coprecipitation and subsequent hydrothermal treatment. The structures of the samples were investigated by XRD, which showed that all are layered double hydroxides with very similar lattice parameters; and samples treated hydrothermally have better crystallinity with ZnO phase. The ZnO exists in rods of several micrometers long, while the [Ni4Al(OH)(10)]OH in disks of various sizes as shown in SEM images. It has been found that samples treated hydrothermally have higher discharge capacity and better cyclic stability, the maximum discharge capacities are 315 mAh g(-1) and 300 mAh g(-1) at discharge current densities of 400 mAg(-1) and 2000 mA g(-1), respectively. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：662 / 668

页数：7

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