3 ms·
To nobody's surprise, this general-audience article misrepresents what is contained in the original paper. See Figure 5 f in the paper: the best energy density
by philipkglass 10y ago
To nobody's surprise, this general-audience article misrepresents what is contained in the original paper. See Figure 5 f in the paper: the best energy density demonstrated is about 0.1 Wh/cm^3. (I'm charitably eyeballing from their log-log plot.) That's 100 Wh/L, which is quite good for a supercapacitor, but significantly below energy densities already available from commercial lithium ion batteries. This could charge much faster than a battery, but it's not going to let your phone last for a week.
http://pubs.acs.org/doi/abs/10.1021/acsnano.6b06111 http://pubs.acs.org/doi/abs/10.1021/acsnano.6b06111