一种基于聚合物复合薄膜的n-p型湿热发电机

An n-p Type Moisture-heat Induced Electricity Generator Based on Polymer Composite Membrane

从环境中广泛存在的湿气中获取电能的绿色发电技术近年来备受瞩目.本研究提出一种简易高效的方法,制备了内含热氧化还原对的n型和p型湿热产电聚合物复合薄膜.并以之构建n-p型湿热发电器件,同时利用环境中的湿气化学势与低品位热能产生电能.研究表明温度与湿度梯度可以协同促进湿热产电薄膜中的离子扩散和器件产电能力,在其体系中引入热氧化还原对可进一步强化环境热能向电能的转换.在80%RH和20℃温差条件下,此n-p型湿热发电器件的功率密度为17μW·cm^(-2).集成9个器件可以仅依靠人体表面的湿热能量产生4~8 V电压.此类器件具有环境刺激响应快速、环境适应性好、轻薄柔性、绿色环保的特点,在自供能可穿戴电子、传感、人体健康监测等领域具有潜在应用前景.

The technologies for harvesting green electricity from the ubiquitous moisture in the environment have garnered significant attention in recent years.This study proposed a facile approach for fabricating the n-type and p-type polymer composite membranes containing thermal redox couples,enabling a n-p type moisture-heat induced electricity generator(n-p-MHEG)for generating electricity from the chemical potential of moisture and low-grade heat in the environment.It reveals that temperature and moisture gradients synergistically enhance the ionic migration and capability of power generation of n-p-MHEG.The introduction of thermal redox couples further improves the conversion of thermal energy in the environment into electricity.The power density of n-p-MHEG can reach 17μW·cm^(-2)under a temperature difference of 20℃at 80%RH.By integrating nine such devices,it is possible to generate high voltages of 4-8 V from the moisture and thermal energy of the human skin.This type of flexible device with rapid response to environmental stimuli,excellent environmental adaptability,lightweight and eco-friendliness has potential applications in self-powered wearable electronics,sensing,and human health monitoring.