基于还原-冷压制备的Janus湿气诱导水伏发电GO-rGO复合材料  

Janus moisture induced hydrovoltaic electricity GO-rGO composite material via reduction and tabletting method

作　　者：张玮峰 王荦敏 邓元 ZHANG Weifeng;WANG Luomin;DENG Yuan(Key Laboratory of Intelligent Sensing Materials and Chip Integration Technology of Zhejiang Province,Hangzhou Innovation Institute of Beihang University,Hangzhou 310051,China;Research Institute for Frontier Science,Beihang University,Beijing 100191,China)

机构地区：[1]北京航空航天大学杭州创新研究院浙江省智能传感与芯片集成技术重点实验室,杭州310051 [2]北京航空航天大学前沿科学技术创新研究院,北京100191

出　　处：《复合材料学报》2023年第12期6630-6638,共9页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金青年科学基金项目(52003015);浙江省自然科学基金重点项目(LZ23E020004);国家重点研发计划(2018YFA0702100);浙江省重点研发计划(2021C01026);浙江省领军型创新创业团队(2020R01007)。

摘　　要：随着万物互联、信息时代下新型传感器自供电需求的增加与传统化石能源使用所造成的全球变暖和环境问题的加剧,亟需开发新的能源利用与发电方式。水伏发电作为一种无源、零碳、负热的电能转化方式,能够充分利用自然界中的水循环,具有重要的研究价值。本文以湿气诱导水伏发电为能源利用形式,以氧化石墨烯(GO)为原材料,通过多巴胺自聚合反应将部分原材料反应为还原氧化石墨烯(rGO),结合冻干与压片的方法制备出具有两面特性的Janus水伏发电GO-rGO复合材料。该材料具有明显的含氧官能团梯度分布性质,在高湿度条件下可以进行长时发电,集成后的单个器件的开路电压接近400 mV,功率密度可达25μW/cm3,同时具有良好的稳定性,在使用1年后仍然具有较好的输出性能。更重要的是,此发电机通过串联可实现阵列化,从而进一步提升发电性能,8个器件串联输出电压便可轻易达到3 V以上,可用于小功率器件的驱动与呼气-吸气行为的响应。本湿气发电材料及器件制备方法简单,输出性能优异,在自供电与传感领域展现出良好的应用前景。With the increasing demand of sensor self-power supply device under the information age and the aggravation of global warming and environmental problems caused by the use of traditional fossil energy,it is urgent to come up with new energy utilization and power generation ways.As a passive,zero-carbon and negative heat energy conversion method,hydrovoltaic power generation can make full use of the water cycle in nature and has significant research value.In this paper,moisture induced hydrovoltaic technology is chosen as the energy utilization form and graphene oxide(GO)was used as the raw material.Through the self-polymerization reaction of dopamine,part of the raw material could be reacted to reduced grapheme oxide(rGO),and the freeze-drying and tableting were combined to fabricate the Janus hydrovoltaic GO-rGO composite material.The as-prepared material has obvious characteristics of gradient distribution of oxygen-containing functional groups and can generate electricity for a long time under high humidity conditions,the output voltage of a single hydrovoltaic device is nearly 400 mV and the peak power density is up to 25μW/cm3.Besides,it exhibits excellent stability which still maintain good output performance after 1 year.More importantly,this generator can be arrays in series to further improve the generation property for driving low-power devices and responding the expiration-inspiration behavior,the output voltage of 8 devices in series can easily reach to 3 V.The as-prepared moisture hydrovoltaic material and generator have the advantage of simple preparation method and excellent output performance,thus showing good application prospect in the field of self-power supply and sensing.

关 键 词：水伏发电 化学还原 Janus材料 湿气诱导 自供电 传感 

分 类 号：O647[理学—物理化学] TB332[理学—化学]