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Electrochemical capacitors

By Lawrence B. Ebert, Esq.

Reference 3 of an article "Electrochemical Capacitors for Energy Management" (321 Science 651) is to a paper by Ian Raistrick, who was a postdoc in the lab where LBE obtained his Ph.D. The 2008 article notes:

Although lithium-ion batteries have advanced greatly in recent years, they still required 3 to 5 minutes for charging, versus about 1 seec for an EC.

The article also states that the RuO2 pseudocapacitor has the highest specific capacitance (about 1000 F/g) in the class.

Of history, the article notes ECs first appeared on the market in 1978 as farad-sized devices to provide computer memory backup power. LBE notes that said application was mentioned to justify Exxon's work on Li-TiS2 in the 1970s.

Page 620 of the 1 Aug 08 Science has an article "New catalyst marks major step in the march toward hydrogen fuel" (describing work by Daniel Nocera at MIT. Thomas Moore is quoted: "It's a big-to-giant step." Bob Park savaged the Nocera work on WN.

Full post as published by IPBiz on August 09, 2008 (boomark / email).