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首页> 外文期刊>Journal of the Korean Ceramic Society >Influence of temperature on performance of CuV2O6 cathode for high voltage thermal battery
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Influence of temperature on performance of CuV2O6 cathode for high voltage thermal battery

机译：CuV2O6温度对性能的影响高压热电池的阴极

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摘要

The influence of heat treatment on the material properties and electrochemical properties of CuV2O6, as a candidate cathode for thermal batteries, was evaluated, where the discharge capacity and open-circuit voltage were measured. The properties of CuV2O6 calcined at different temperatures were determined using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy (XPS), thermal gravimetric analysis (TGA) and transmission electron microscopy (TEM) and energy dispersive spectroscopy. CuV2O6 was synthesized from NH4VO3 and CuCl2 via the hydrothermal method, and the XRD pattern was consistent with PDF#01-074-2117. The synthesized CuV2O6 was calcined at different temperatures, and the influence of calcination on the structures was analyzed by SEM and TEM. The SEM and TEM images showed that CuV2O6 was formed as rod-shaped crystals that gradually grew with increasing calcination temperature. However, upon calcination at 600 degrees C, the morphology of CuV2O6 was not maintained and the compound decomposed irregularly. XPS analysis showed that CuV2O6 is changed to Cu2V2O7 at higher calcination temperatures. Less than 5% weight change was observed in the TGA curves, including an increase in the weight at a higher temperature. The capacity of the CuV2O6 samples was approximately 300-350 mAh/g as determined from the discharge curve, and CuV2O6 calcined at 550 degrees C had a higher activation energy than the other samples. Calcination at higher temperature could afford enhanced battery capacity. The data indicate that CuV2O6 may be a viable candidate material for thermal battery cathodes.
机译：热处理对材料的影响性质和电化学性质CuV2O6,作为一个候选人对热阴极电池,是评估,放电能力和开路电压测量。在不同的属性CuV2O6煅烧温度测定使用x射线衍射(XRD),扫描电子显微镜(SEM)、傅里叶变换红外光谱学x射线光电子能谱(XPS)、热重量分析法(TGA)和传播电子显微镜(TEM)和能量色散光谱学。CuCl2通过水热法,XRD模式与PDF # 01-074-2117是相一致的。合成CuV2O6在不同煅烧温度,煅烧的影响扫描电镜和透射电镜的结构进行了分析。SEM和TEM图像显示CuV2O6成立随着杆状晶体逐渐增长提高煅烧温度。煅烧在600摄氏度的形态CuV2O6不维护和化合物分解不规则。CuV2O6改为Cu2V2O7更高煅烧温度。改变TGA曲线中可观察到,包括增加体重在更高温度。大约是300 - 350 mAh / g决定从放电曲线,CuV2O6煅烧550摄氏度的活化能高于其他的样品。温度可以增强电池能力。可行的候选人材料热电池阴极。

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