Scienceblogtwo

The water-activated battery can be used with a variety of single-use electronic gadgets. Scientific Reports published a proof-of-concept study that describes a water-activated disposable paper battery. The researchers claim that it might be used to power a wide range of low-power, single-use disposable electronics, including smart labels for item tracking, environmental sensors, and medical diagnostic gadgets, to reduce their environmental impact. The battery is made up of at least one cell that is one centimeter square and is composed of three inks that have been printed on a rectangular piece of paper. It was created by Gustav Nyström and colleagues. The paper strip has wax on one of its shorter ends and is dusted with sodium chloride salt. The positive end of the battery is represented by the flat side of the paper that is printed with graphite flakes-containing ink (cathode). The negative end of the battery is represented by the other side, which is printed with ink containing zinc...

To make a loaf of bread that rises nicely, bakers ferment the dough. Similar to this, brewers ferment wheat and barley to produce smooth, malty beer. Some microorganisms can even produce more, making them the best bakers and brewers in nature. In reality, certain types of bacteria use the fermentation process to create their own preferred nutrients from carbon dioxide (CO2) gas. This may be used to energise the planet. Scientists who research the subtle and intricate chemical processes in bacteria are aware of this remarkable ability—fermenting CO2 into chemical energy. One of them is Wei Xiong, a researcher at the National Renewable Energy Laboratory (NREL), who claims that gas-fermenting bacteria can teach us how to convert waste gases like CO2 into sustainable fuels. "As CO2 is the primary heat-trapping (greenhouse) gas in the atmosphere, CO2 removal and conversion are of global concern. The key is pathways for CO2 fixation, according to Xiong. We are particularly interested in...