> > On 23 July 2014 04:27, Mike wrote: > >> Someone seems to think they are a viable alternative to AA batteries: >> > >> >> https://www.kickstarter.com/projects/shawnpwest/30-second-charging-recha= rgeable-battery >> >> Unfortunately it looks like he's suffering from He's suffering for "Sola= r >> Freakin' Roadway" syndrome; his numbers don't seem to add up. >> >> A few days ago he went from dreamer to Nobel Laureate in waiting. He MAY have made a breakthrough of international scientific significance, but the odds of having done so are essentially zero. His comment " ... Now, the theoretical capacitance is near 3500. ..." may perhaps be true, but if he hasn't measured it he's liable to be in the deepest of trouble. His actual test methods show he ha extremely limited capability electrically. Sad. !!!!!!!!!!: It turns out he's going to have the caps made to his spec using graphene, which he has been makingf himself using a ball mill and several days of ball milling. (Thi is in fact a potentially viable way of making small graphene particles but they have significant usability issuies= .. This very useful 2012 paper http://ac.els-cdn.com/S1369702112700445/1-s2.0-S1369702112700445-main.pdf?_= tid=3Dcdd49002-14b7-11e4-949d-00000aacb35f&acdnat=3D1406374219_93c0213ba1d7= ed7dc57d1347a229397e notes Graphene synthesis Graphene has been synthesized in various ways and on different substrates. In the following, we summarize the synthesis methods, and comment on their maturity, advantages and disadvantages, and targeted applications. Graphene was first exfoliated mechanically from graphite in 20049 . This simple, low-budget technique has been widely credited for the explosive growth of interest in graphene. Graphene flakes have been invaluable to the study and elucidation of graphene properties. Unfortunately, however, they are usually available at a size of several-microns (or tens of microns at best), have irregular shapes, and their azimuthal orientation is not deterministically controlled. *Technolog= ical applications that take advantage of graphene's extraordinary electronic transport properties require structurally coherent graphene on a large scale (e.g., wafer-scale), or large arrays of graphene flakes positioned with a unique azimuthal orientation on a substrate. The latter structures have not yet been demonstrated with flakes and this technology is expected to have limited relevance to commercial high-end electronic applications. * His claims re Graphene caps. https://www.kickstarter.com/projects/shawnpwest/30-second-charging-recharge= able-battery/posts?page=3D1 Russell --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .