Polyplus and SK Team on Glass-Encapsulated Batteries

Dean Sigler Announcements, Batteries, Sustainable Aviation Leave a Comment

Polyplus, a Berkeley, California-based battery developer, has teamed with SK, Korea’s” first and largest energy and chemical company,“ to produce and test prototype cells to demonstrate increased volumetric and gravimetric energy density and cycle life relative to existing Li-ion cells.”  Just reported,  “The PolyPlus lithium-water battery has achieved the highest recorded energy density of 1,300 Watt-hours/kilogram, or an almost 10x improvement* over current lithium-ion batteries. Polyplus projects the energy density for commercial lithium-air batteries to be 1000 watt-hours per kilogram.”   As with many recent partnerships, the alliance between Polyplus and SK provides “muscle” for the smaller partner.  Polyplus, with 18 bay area employees, will benefit from the far more sizable SK’s financial and managerial expertise.  Between the two firms Polyplus’ 135 …

Ultra High Lift Without Flaps

Dean Sigler Diesel Powerplants, Electric Powerplants, GFC, Sustainable Aviation 1 Comment

Dr. Gecheng Zha, an Associate Professor with the University of Miami has an impressive set of credentials, culminating in a Ph.D.from the University of Montreal, Ecole Polytechnique.   That, and his impressive body of work helped impress the audience at the seventh annual Electric Aircraft Symposium this last April. His work over the last decade has focused on generating high lift and low drag through circulation control on wings – even leading to the concept that wings can generate thrust instead of drag.  This integration of aerodynamic forces would lead to highly efficient aircraft capable of flying on little – or even no power. Earlier attempts to increase lift and decrease drag have relied on sometimes complex, multiply flapped and …

A Shot of Lithium with a Water Chaser, Please

Dean Sigler Electric Powerplants, Sustainable Aviation 1 Comment

Lithium, a highly reactive metal, will fire off its electrons in a fizzy display if placed in water.  As one source explains, “The lithium-water reaction at normal temperatures is brisk but not violent.” It comes as a surprise then that one lithium battery manufacturer, PolyPlus Battery Company, insists on putting its lithium battery electrodes in H2O.  The firm makes both lithium/air and lithium/water batteries, holds over 72 patents on its intellectual property and has recently earned, along with its partner Corning, an ARPA-E (Advanced Research Project Agency – ENERGY) grant of nearly $5 million.  It also made Time magazine’s list of the “50 Best Inventions of 2011.”   It will be presented as a finalist in the Edison Awards dinner in …