ORNL Makes It Two for Two

Dean Sigler Electric Powerplants, Sustainable Aviation Leave a Comment

Oak Ridge National Laboratory has announced that their researchers have built and demonstrated a high-voltage (5 V) lithium, solid-state battery with a usable life of more than 10,000 cycles, at the end which test the battery retains more that 90-percent of its original capacity.  That makes two such claims in a week, with ORNL’s battery comparable to that developed by Nanyang Technology University (NTU) and reported on in this blog last week. ORNL points out that, “For a given size of battery, the energy stored in a battery is proportional to its voltage. Conventional lithium-ion batteries use organic liquid electrolytes that have a maximum operating voltage of 4.3 V. Operating a battery above this limit causes short cycle life and …

​NTU Develops Ultra-fast Charging Batteries That Last 20 Years

Dean Sigler Electric Powerplants, Sustainable Aviation Leave a Comment

Singapore is only 276.5 square miles, about 27 miles long, and has five and a half million people, according to Wikipedia.  It’s an enormously productive country with an excellent education program from kindergarten on up to graduate schools.  Recently, one of those graduate programs announced an “ultra-fast charging batter[y] that can be recharged up to 70 per cent in only two minutes.” This breakthrough from Nanyang Technology University (NTU) is also claimed to have a 20-year lifespan, 10 times that of existing lithium-ion cells. Part of the new battery’s success comes from replacement of the traditional graphite anode with a new gel materal made from titanium dioxide, “an abundant, cheap and safe material found in soil. It is commonly used …