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在高温下,散装和纳米板石墨碳化物紧物的交替电流特性

Tosapol Maluangnont¹, Phieraya Pulphol², Kanokwan Chaithaweep³

¹Electroceramics Research Laboratory, College of Materials Innovation and Technology, King Mongkut's Institute of Technology Ladkrabang Bangkok 10520 Thailand tosapol.ma@kmitl.ac.th.

|August 25, 2023

概括

石墨碳化物 (g-C3N4) 在高温下表现出稳定的电绝缘性能. 纳米板g-C3N4显示出作为高温应用的强大的介电材料的潜力.

科学领域:

材料科学材料科学材料科学
固态物理固态物理
纳米技术纳米技术

背景情况:

之前关于石墨碳化物 (g-C3N4) 电气性能的研究仅限于室温和真空制造设备.
在高温下g-C3N4的电气行为仍未得到充分研究,这阻碍了其在苛刻的热环境中的应用.

研究的目的:

调查散装和纳米板g-C3N4的交流电特性在400°C至35°C之间的温度依赖性.
为了评估高温应用g-C3N4材料的热稳定性和介电性能.

主要方法:

通过尿素热解合成散装g-C3N4和通过HNO3辅助脱皮通过纳米板g-C3N4.
作为温度和频率 (10^310^5 Hz) 的函数的交流电特性 (电阻,介电电容,损失触点) 的表征.
可变温度X射线衍射以确认热稳定性和层间行为.

主要成果:

散装和纳米板g-C3N4都表现出高电阻力 (∼10^8 Ω cm) 与最小的温度依赖.
介电电容率,损失触点,折射率和衰减系数显示出对温度和频率的依赖性很弱.
与散装g-C3N4 (∼8) 相比,纳米板g-C3N4表现出更高的介电电容率 (∼15),具有类似的低损失触角 (∼0.09).

结论:

石墨碳化物 (g-C3N4) 是一种高绝缘性材料,具有显著的热稳定性,适用于高温应用.
纳米板g-C3N4作为一种稳定,高性能介电材料具有有前途的潜力,可在高温下使用.

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