Recent content by curiousguy

the work of yours truly in the spotlight http://www.greencarcongress.com/2015/06/20150601-trina.html

This paper brings significant knowledge to the li-air field. The end product of discharge is not li2o2 but lioh. Which means the radicals which were previously eating the electrolyte are now reacting with water in a stable manner. Grey's group shows 2000 cycles with a capacity of 1000 mah/g...

if you look at the demise of LiFePO4 vs the success of LiCoO2 based cathodes you could say that energy density is a very important (if not the most important) roadblock to be bypassed in the trek towards cheap EVs. LiFePO4 has around 2/3 the capacity of LiCoO2, similar voltage but is able to...

i would like to point out than steven chu, ex-secretary of dept of energy is co-authoring this paper. as i have also had to include "high level management" on previous papers for various reasons, i warn the readers to take the validity of the paper with a pinch of salt whenever politicians (or...

im not an engineer (as i would guess many of you are on this forum) but the general ideas put forward in this article are pretty common in the battery research field. if you attend various conferences where cutting edge research on batteries is presented, this is the kind of stuff you hear in...

"Elon R. Musk, the billionaire founder of PayPal and chief executive officer of the California-based car company Tesla Motors, took to an open-air stage in London recently for the U.K. launch of his new all-electric car, the Model S. During a rock-concert-like event he handed over the keys to...

So ORNL is a national lab. they dont commercialize anything. if there is anything worth it there there will be a spin-off company hoping to make it work. But the solid state lithium sulfur batteries did not garner that sort of interest. diffusion rates through the solid state electrolyte are...

Toyota is a mega corporation. They spend R&D dollars on pretty much everything under the sun. I assume they like solid state because it does not use the flammable liquid electrolytes utilized in Li-ion while making use of the same anodes/cathodes. Thus they are inherently safer and do not...

batteries are electrochemical storage devices. i dont see any reference of electrochemistry here. which species gets reduced and/or oxidized?

so the expected battery capacity can be calculated based on the molecular weight of the active material in the electrode, the number of electrons transferred and Faradays constant. For example the commercial cathode for Li-ion is LiCoO2. It undergoes one electron reduction of Co(IV) to Co(III)...

the problem with flow batteries for auto use is an intrinsic low energy density because they utilize liquid electrodes. lets look for example at the commercial cathode for Li-ionbatteries, LiCoO2. the concentration of Co (the active metal which undergoes reversible reduction/oxidation in the...

steven visco, the CEO of polyplus said at a recent conference hosted by Argonne Ntl Labs that he expects to commercialize these lithium metal/flexible poly-ceramic separator/aqueous electrolyte/sulfur cathode in 4 years. i am not convinced but i am a fan of the sulfur cathode. sion power is...

at a recent conference hosted by one of our national labs, the director of JCESR said ( and i am paraphrasing): "... 5 years ago, i would have lost my shirt in a bet about how far Tesla would achieve with the current Li-ion battery technology ..." Just keep in mind he is leading this hub which...

"spontaneous" here is used in its thermodynamic sense. it means that a phenomenon occurs by itself, or it is bound to happen. also the author of the article misuses the word "trasnference rate". It is actually "transference number", as it is not a rate, but a fraction describing which mobile...

this technology has major inherent drawbacks (as well as promises). currently the degradation of battery components by superoxide radicals formed during charging hinders progress in the field. IBM was a leader in Li-air research but they recently announced they will "diversify" to Na-air. Other...