Dear Colleagues,

With the rapid development of the Internet of Things, the manner of communication has been changed by the application of various portable and wireless electronic devices and sensors. The main features of these tiny electronics and sensors are portability and miniaturization and rechargeable energy storage devices is currently the major choice for powering these devices. However, with the inherent shortcomings of these energy storage devices such as limited charge times and potential safety risks, they are not fully applicable and all-weather to electronics. Moreover, wasted batteries also bring serious pollution problems, which becomes more and more serious as time goes on. Hence, a powerful and sustainable energy harvesting technique, which can transfer various forms of energy from the surrounding environment into electricity, can be an alternative to remedy the shortcomings of traditional battery technology. Accordingly, a series of distinct mature technologies for energy conversion have been developed to convert environment energy into electricity, which includes electromagnetic generators, solar cells, thermoelectric generators, biofuel cells and nanogenerators. Therefore, through this Special Issue, I am seeking your original, unpublished works that describe recent advances in energy materials and energy harvesting techniques. I also extend my warm invitation for research papers from a broad range of topics related to energy storage technique and power managing methods, self-powered sensors, air monitoring, and many other related applications. Our team will work hard towards the rapid and wide dissemination of your valuable theoretical studies, progress reviews, and novel applications.

Full papers, communications, and reviews are all welcome. I look forward to receiving your work.

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• Energy harvesting 
• Energy conversion materials
• Energy storage 
• Power management 
• Sensory system 
• Nano fabrication