A novel, environmentally friendly and facile method for oxidative energy storage in nickel hydroxide film electrodes
A novel, environmentally friendly and facile method for oxidative energy storage in nickel hydroxide film electrodes
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DOI：
10.1016/s1003-6326(11)61180-1
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发表时间：
2012-02
影响因子：
4.5
通讯作者：
Wenjun Fang;Hui-Qin Lian;Jianming Wang;Lei Xu;Liying Zhang;Jian-qing Zhang;Chunmei Ju
中科院分区：
文献类型：
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作者：
Wenjun Fang;Hui-Qin Lian;Jianming Wang;Lei Xu;Liying Zhang;Jian-qing Zhang;Chunmei Ju
用多种电化学方法研究了由氢氧化镍薄膜电极和氧还原铂阴极组成的新型体系的氧化储能行为。用扫描电子显微镜(SEM)和X射线衍射仪(XRD)对样品的结构和形貌进行了表征。结果表明，在含有较高氧含量或较低pH值的阴极电解液的耦合体系中，Ni(OH)2电极的氧化储能能力得到明显提高。氧化−循环测试结果表明，在1.0mol/L Na2SO4(pH=2)为正极电解液的耦合体系中氧化600 S的Ni(OH)2膜电极首次放电容量为79.0mC/cm~2，第12次放电容量为97.9mC/cm~2，表明所研究的氧化储能转换体系具有良好的可逆性。
The oxidative energy storage behaviors of a designed novel system comprising a nickel hydroxide film electrode and an oxygen-reducing platinum cathode were investigated by various electrochemical techniques. The structure and morphology of samples were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis. It is found that the oxidative energy storage in the Ni (OH) 2 electrodes can be obviously enhanced in the coupling system containing the cathode electrolytes with higher oxygen content or lower pH value. The results of the oxidation− discharge cycle tests show that the Ni (OH) 2 film electrode oxidized in the coupling system with 1.0 mol/L Na2SO4 (pH= 2) as cathode electrolyte for 600 s presents discharge capacities of 79.0 mC/cm2 at the first cycle and 97.9 mC/cm2 at the 12th cycle, suggesting the excellent reversibility of the investigated oxidative energy storage and conversion system.