high power density tagged posts

A new bendable supercapacitor made from graphene, which charges quickly and safely stores a record-high level of energy for use over a long period, has been developed. While at the proof-of-concept stage, it shows enormous potential as a portable power supply in several practical applications including electric vehicles, phones and wearable technology.

The discovery, published today in Nature Energy, overcomes the issue faced by high-powered, fast-charging supercapacitors — that they usually cannot hold a large amount of energy in a small space.

First author of the study, Dr Zhuangnan Li (UCL Chemi...

Scanning electron microsopy images before and after stability
measurement for 700 h. Interface between PBSCF cathode and BZCYYb4411 electolyte (a)
before stability measurement. (b) after stability measurement. High-magnification of
microstructure of cathode. (c) before stability measurement. (d) after stability measurement. (e)
EDS line scan at the cathode and electrolyte interface after stability measurement

By combining a high-activity cathode with a new composition of matter, fuel cell operates at 500C – a commercialization sweet spot...