Researchers successfully made a battery out of trash

June 14, 2017 by  
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If there’s one thing that abounds on planet Earth , it is man-made trash . Fortunately, researchers have developed a method of using discarded goods to create sodium-ion batteries. Made from recycled materials and safer than lithium variants, the battery is the latest step in renewable energy storage. To create batteries out of trash, the scientists accumulated rusty, recycled stainless steel mesh. Then, they used a potassium ferrocyanide solution — the same solution used in fertilizers and in wine production — to dissolve the ions out of the rust layer. Ions such as nickel and iron then bonded with other ions in the solution. This created a salt that clung to the mesh as scaffolded nanotubes that store and release potassium ions. As Engadget reports , “The movement of potassium ions allows for conductivity, which was boosted with an added coating of oxidized graphite.” Related: ‘Instantly rechargeable’ battery spells bad news for gas-guzzling cars More often than not, lithium batteries are used for renewable energy storage. However, the type of battery is expensive and exists in limited amounts. Additionally, lithium batteries have been known to explode. Not only are the new sodium-ion batteries safer, they boast a high capacity, discharge voltage, and cycle stability. Developing the battery was step one of testing the concept. Now that scientists have successfully created renewable energy from trash, the battery can be improved upon to maximize its potential. Via Engadget Images via Pixabay

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Researchers successfully made a battery out of trash

Elegant Australian home shows the beauty and toughness of rammed earth

June 14, 2017 by  
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Rammed earth may be an ancient building material, but the modern homes that use compact earth are anything but old-fashioned. One such example is Robson Rak Architects and Interior Designers’ recently completed Layer House, a robust and elegant home in Victoria, Australia that keeps naturally cool with rammed earth walls. Made from local materials by local artisans, the rammed earth is paired with timber to create a beautiful palette that will last the test of time. Built to last generations, the large 470-square-meter Layer House was designed with an eye for detail and quality. The home derives its name from the intersecting zones and private vistas created from an asymmetrical layout that wraps around a series of courtyards . Rammed earth and timber are the two main building materials in the Layer House. The architects write: “The sand component of the rammed earth is locally sourced and built by local artisans. Rammed earth is a sustainable, honest, and efficient building material that requires no maintenance and ages gracefully. The timber will be allowed to grey off and age with time.” A few vibrant pops of color, such as the green tiled island bench and blue sofa, provide contrast to the pale color palette. Related: Rammed earth school in Vietnam blooms like a colorful jungle flower The low-maintenance rammed earth walls provide a thermal mass for passive cooling in summer and heating in winter. Energy efficiency is further improved with double glazed and thermally broken aluminum doors and windows. Louvers control the flow of cross ventilation, while hydronic heating is embedded into the concrete floors. + Robson Rak Architects and Interior Designers Via ArchDaily Images © Shannon McGrath

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Elegant Australian home shows the beauty and toughness of rammed earth

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