近日，实验室朱宇灿老师、张汝勤同学提出了一种协同策略，通过退火处理和化学还原的方式，有效地调节了还原氧化石墨烯（rGO）薄膜上的含氧官能团。所得到的还原氧化石墨烯薄膜的电容性能随着电导率的降低而逐渐提高，除此之外，不同电导率的还原氧化石墨烯薄膜展现出显著差异的红外发射率，为热伪装技术的应用提供了全新的可能性。这一研究成果发表在Applied Surface Science.
The regulation of physical and chemical properties for paper-like graphene films can broaden their application fields and enhance their practical value. Here, we propose a synergistic strategy of annealing treatment and chemical reduction, effectively regulating the oxygen-containing functional groups on reduced graphene oxide (rGO) films, constructing the rGO films with a conductivity range of 109–13488 S m−1 . As electrode materials of supercapacitors, the resulting rGO films exhibit gradually improved capacitance performance with the conductivity decreases. Ultimately, the rGO films can obtain a specific capacitance of 181F g−1 at 0.2 A g−1(81.8% capacitance retention rate at 20 A g− 1 ). Besides, for infrared stealth, the infrared emissivity of the rGO films with different conductivities exhibits significant differences, expected application in thermal camouflage. Therefore, we believe that the conductivity regulation strategy of the rGO films is expected to enrich the performance parameters of the films, broadening their application fields.
论文题目：Controllable graphene films with different conductivities for electrochemical energy storage and thermal camouflage.
论文作者：Yucan Zhu , Ruqin Zhang, Yingying Peng , Zhicheng Liu , Liang Chen , Gangyong Li , Minjie Zhou,WeiWang , ZhaohuiHou.
