Ni(OH)_2电极材料的XRD和Raman光谱表征

XRD and Raman Spectrometric Characterization on Ni(OH)_2 Electrode Materials

用 XRD和 Raman光谱等方法对几种典型球形 Ni( OH) 2 电极材料进行了表征 ,并分析了材料的表观形貌、掺杂元素和微观结构等对其充放电性能的影响 .结果表明 ,有较好填充性和充放电性能 Ni( OH) 2 电极材料所具有的特征为 ,颗粒的球形好且结晶完好 ,晶粒较小 ,较大的晶格参数 c,并在 51 0和 3596cm- 1 处可以生成 Raman光谱峰 ;而 XRD和 Raman光谱方法则是评价 Ni( OH) 2 电极材料性能的有效手段 .

Several spherical Ni(OH)_2 electrode materials were prepared and characterized by XRD, Raman spectrometry and other experimental methods.The effects of apparent appearance, doping elements and microscopic structure of Ni(OH)_2 samples on their charge-discharge performances were discussed. The results showed that the Ni(OH)_2 electrodes had good filling and higher charge-discharge property and were characterized by a proper spheroidicity and crystallinity, small grain size and greater cell parameter c. In Raman spectra they gave characteristic peaks at 510 and 3596 cm^-1 bands. The XRD and Raman spectrometry appeared an effective tools for evaluation of Ni(OH)_2 electrode material.