Preparation and lithium ion storage performance of nano-sized β-Ni(OH)<sub>2</sub>

LI Yanwei; PAN Guanlin; YAO Jinhuan; LI Shiyu; ZHANG Lingzhi

doi:10.11949/j.issn.0438-1157.20150624

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Preparation and lithium ion storage performance of nano-sized β-Ni(OH)₂

更新时间：2025-12-10

- Preparation and lithium ion storage performance of nano-sized β-Ni(OH)₂
- CIESC Journal Issue 12, Pages: 5088-5095(2015)
- 作者机构：
  
  1. 桂林理工大学化学与生物工程学院, 广西电磁化学功能物质重点实验室,广西,桂林,541004
  2. 中国科学院可再生能源重点实验室,广东,广州,510640
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150624
  CLC： Q152
- Online First：05 December 2015，
  
  Published：05 December 2015
- 稿件说明：
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LI Yanwei, PAN Guanlin, YAO Jinhuan, et al. Preparation and lithium ion storage performance of nano-sized β-Ni(OH)₂[J]. CIESC Journal, 2015, (12): 5088-5095. DOI: 10.11949/j.issn.0438-1157.20150624.
DOI：

LI Yanwei, PAN Guanlin, YAO Jinhuan, et al. Preparation and lithium ion storage performance of nano-sized β-Ni(OH)₂[J]. CIESC Journal, 2015, (12): 5088-5095. DOI: 10.11949/j.issn.0438-1157.20150624. DOI：

摘要

以Ni(NO3)2·6H2O和NaOH为原料采用化学沉淀法制备了Ni(OH)2电极材料。采用X射线衍射(XRD)和场发射扫描电子显微镜(FESEM)表征了样品的微观结构

结果表明该样品是具有片状纳米次级结构的β-Ni(OH)2。采用循环伏安(CV)和电化学充放电测试研究了该β-Ni(OH)2样品的储锂性能

结果发现该样品作为锂离子电池负极材料具有非常高的储锂活性

在50 mA·g-1电流密度下其第3次循环放电比容量高于1550 mA·h·g-1;样品电极中的碳含量对其循环性能和倍率性都有显著影响

通过交流阻抗(EIS)测试分析了样品电极中碳含量的作用机理。

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 is β-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 the β-Ni(OH)2 sample. The results show that the prepared β-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 prepared β-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 the β-Ni(OH)2 sample. The mechanism of carbon content on lithium storage performance of the β-Ni(OH)2 sample is analyzed by electrochemical impedance spectroscopy (EIS) tests.

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Preparation and lithium ion storage performance of nano-sized β-Ni(OH)2

DOI：10.11949/j.issn.0438-1157.20150624

摘要

Abstract

关键词

Keywords

references

Preparation and lithium ion storage performance of nano-sized β-Ni(OH)₂