Batteries Following Roads Less Taken

Dean Sigler Batteries, Solar Power, Sustainable Aviation Leave a Comment

When you come to a fork in the road, take it.  Yogi Berra Technology and new products continue to enhance the development and realization of electric and solar aircraft.  Two approaches to batteries, both of which explore roads less taken, have some promise for aircraft use. Shine Some Light on It What if your battery could be recharged just by exposing it to light?  A team of South Korean researchers, affiliated with UNIST (Ulsan National Institute of Science and Technology) has developed a single-unit, photo-rechargeable portable power source based on high-efficiency silicon solar cells and lithium-ion batteries (LIBs).  Rechargeable under solar or artificial light, the unit could power other electronic devices, “even in the absence of light.” Professor Sang-Young Lee and Professor Kwanyoung Seo of Energy and Chemical Engineering at UNIST have presented a new class of monolithically integrated, portable PV–battery systems (SiPV–LIBs) based on miniaturized crystalline Si photovoltaics (c-Si PVs) and printed solid-state lithium-ion batteries (LIBs). Using a thin-film printing …

My Battery Won’t Blow Up. It’s Gellin’

Dean Sigler Electric Powerplants, Sustainable Aviation Leave a Comment

We think of gel inserts as something to absorb energy in shoes, and their uses extend into saddle cushions and protective seat pads for racing drivers.  Researchers in South Korea, however, are looking at ways to transfer ions through gelatins similar to those used in Japanese food. Konnyaku is a vegan gelatin often used to make stretchy noodles popular in Japanese cooking.  A similar organic gel (organogel) can be used in electrolytes with “high ionic conductivity and cationic transference number,” according to a research team at Ulsan National Institute of Science and Technology (UNIST), South Korea. Professors Hyun-Kon Song and Noejung Park of UNIST and their fellow researchers have developed an organogel polymer electrolyte that looks like clear Jello® and which could solve problems presented by liquid electrolytes.  Their electrolyte gels irreversibly despite surrounding temperatures, and passes lithium ions easily. Stability during thermal events might have prevented recent battery fires on the Boeing 787, according to Song and Park.  The …