Power Aware Routing in Mobile Ad Hoc Networks

Recent advances in all-solid-state rechargeable lithium batteries

PEO/garnet composite electrolytes for solid-state lithium batteries: From “ceramic-in-polymer” to “polymer-in-ceramic”

One-dimensional TiO2 (1D TiO2) nanomaterials with unique structural and functional properties have been extensively used in various fields including photocatalytic degradation of pollutants, photocatalytic CO2 reduction into energy fuels, water splitting, solar cells, supercapacitors and lithium-ion batteries. In the past few decades, 1D TiO2 nanostructured materials with a well-controlled size and morphology have been designed and synthesized. Compared to 0D and 2D nanostructures, more attention has been paid to 1D TiO2 nanostructures due to their high aspect ratio, large specific surface area, and excellent electronic or ionic charge transport properties. In this review, we present the crystal structure of TiO2 and the latest development on the fabrication of 1D TiO2 nanostructured materials. Besides, we will look into some critical engineering strategies that give rise to the excellent properties of 1D TiO2 nanostructures such as improved enlargement of the surface area, light absorption and efficient separation of electrons/holes that benefit their potential applications. Moreover, their corresponding environmental and energy applications are described and discussed. With the fast development of the current economy and technology, more and more effort will be put into endowing TiO2-based materials with advanced functionalities and other promising applications.

A review of one-dimensional TiO2 nanostructured materials for environmental and energy applications

Since their market introduction in 1991, lithium ion batteries (LIBs) have developed evolutionary in terms of their specific energies (Wh/kg) and energy densities (Wh/L). Currently, they do not only dominate the small format battery market for portable electronic devices, but have also been successfully implemented as the technology of choice for electromobility as well as for stationary energy storage. Besides LIBs, a variety of different technologically promising battery concepts exists that, depending on the respective technology, might also be suitable for various application purposes. These systems of the “next generation,” the so-called post-lithium ion batteries (PLIBs), such as metal/sulfur, metal/air or metal/oxygen, or “post-lithium technologies” (systems without Li), which are based on alternative single (Na+, K+) or multivalent ions (Mg2+, Ca2+), are currently being studied intensively. From today’s point of view, it seems quite clear that there will not only be a single technology for all applications (technology monopoly), but different battery systems, which can be especially suitable or combined for a particular application (technology diversity). In this review, we place the lithium ion technology in a historical context and give insights into the battery technology diversity that evolved during the past decades and which will, in turn, influence future research and development.

Lithium ion, lithium metal, and alternative rechargeable battery technologies: the odyssey for high energy density

A review of lithium and non-lithium based solid state batteries

††† † Summary Wireless Sensor Networks (WSNs) become an important issue such as environmental monitoring, home or factory automation, logistics and so on. Many wild fires cause to damage on forest and a mountain which have valuable natural resources during the dry winter season. Current surveillance systems use a camera, an infrared sensor system and a satellite system. These systems can not support real-time surveillance, monitoring and automatic alarm. In this paper, we develop a forest-fires surveillance system in South Korea Mountains. We call this system FFSS (Forest-Fires Surveillance System). The developed FFSS consists of WSNs, middleware and web application. The WSNs measure temperature and humidity, and detect smoke. The middleware program and the web application analyze the collected data and information. The FFSS is possible to detect the heat. It let to know early alarm in real time when the forest-fire occurs.

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Byungrak Son

Papers

A review of lithium and non-lithium based solid state batteries

A Design and Implementation of Forest-Fires Surveillance System based on Wireless Sensor Networks for South Korea Mountains

Nafion-sulfonated silica composite membrane for proton exchange membrane fuel cells under operating low humidity condition

Graphene supported Pt–Ni nanoparticles for oxygen reduction reaction in acidic electrolyte

Porous zirconium oxide nanotube modified Nafion composite membrane for polymer electrolyte membrane fuel cells operated under dry conditions