Flexible and Large-Area Nanocomposite Generators Based on Lead Zirconate Titanate Particles and Carbon Nanotubes

摘要

Energy harvesting technologies that can operate electric devices from ambient energy sources without the use of a battery have attracted attention in response to the environmental problems and energy crises of the past few decades. Since irregular mechanical energy sources, in particular, are the most common and are more accessible than other outdoor renewable energy resources (such as solar, wind, thermal, and wave energy), vibrational-source-based energy harvesters have been developed by many researchers. In particular, as the piezoelectric-based harvesting technology can directly convert to electrical energy from mechanical energy, a flexible, piezoelectric-based, energy-harvesting device called a nanogenerator has been studied as a simple and noteworthy power source for flexible and wearable electronic devices. Moreover, milliwatt-scale nanogenerators may be a key technology for realizing wireless sensor networks in healthcare and environmental monitoring applications and defense systems, which require high output, long lifetime, and lightweight self-powered systems.