Long Life

[the_killjoy]

Let's hope this isn't another false dawn, it could overcome the big bug bear of EVs, battery replacement.

http://metro.co.uk/2016/04/23/scientists-accidentally-work-out-how-they-could-make-phone-batteries-last-forever-5836772/?ito=twitter

 

[Benjahmin]

This sounds great, though I don't understand the science.
However I recall that standard tungsten filament lamps originally had a huge life span. Then all the manufacturers got together because they realized that, because of the life span, they weren't going to make enough profit. So they agreed to limit the life to 2,000 hours max. So planned obsolescence was foisted on the consumer.
I suspect that, even if these claims are true, we won't be seeing batteries last much longer than they do.
Now for a chorus of, 'You cynical old git'... all together now, 1..2..3......

 

[Gubbins]

I watched a James May program i think it was called the peoples car.. he was driving a BMW e-car with a range of about 70 miles and compared it to the first electric car built in the late 1800's that actually had a similar range.. his point being the seeming lack of progress..

 

[trex]

it seems to me that the electrolyte gel acts as shock absorber for the nanotubes.

here is the video:

 

[D8ve]

This sounds great, though I don't understand the science.
However I recall that standard tungsten filament lamps originally had a huge life span. Then all the manufacturers got together because they realized that, because of the life span, they weren't going to make enough profit. So they agreed to limit the life to 2,000 hours max. So planned obsolescence was foisted on the consumer.
I suspect that, even if these claims are true, we won't be seeing batteries last much longer than they do.
Now for a chorus of, 'You cynical old git'... all together now, 1..2..3......

.

Early lamps were very life limited. The filliments vaporised and combusted with air.
Cue vacuum this increased vaporisation. Hot spots resulted in thinking of the wire and increased local heat so increased vaporisation ...short life.
Add inert gas and reduce vaporisation to extend life but a soft bulb let oxygen in and the bulb popped when it switched on.
The art went with tungsten in inert gas.
The hotter the filliment the brighter/ less yellow the light. But hotter meant shorter life.
So a long lasting dim yellow light or a bright natural short life light.
The compromise for domestic lights came down to a manufactured 2k hour life. For projection and studio lights it could be hours. And special long life bulbs were made but think dull.