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Power Week-in-Review: Self-Healing Battery, Personal Hydroelectric Generator & Li-ion Forecast
11/27/2013

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Cracks formed in a self-healing silicon electrode due to swelling during charging (top) begin to seal back up within hours (bottom). (Source: C. Wang et al, Nature Chemistry)
Cracks formed in a self-healing silicon electrode due to swelling during charging (top) begin to seal back up within hours (bottom).
(Source: C. Wang et al, Nature Chemistry)

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Scott.Willis
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Faucet attachment seems wasteful
Scott.Willis   11/30/2013 1:09:57 AM
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Charging from a stream seems great, if one's available.  If you have a stream of rainwater coming off a roof, it looks like it could work OK as long as the rain lasted.

I'm not happy with the idea of attaching it to a faucet.  They say "only one gallon per minute" but a 2..3 hour charging time seems like it would often mean running 120..180 gallons of clean drinking water down the drain.  Power generation runs a pump, which pushes water through a network of pipes, which turns the HydroBee generator, which charges some batteries.  Then there's whatever energy is spent on water treatment and running the local sewage plant.  The faucet attachment seems like a really low efficency approach to charging batteries.

prabhakar_deosthali
User Rank
CEO
Re:
prabhakar_deosthali   11/29/2013 1:27:47 AM
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@Sanjib

I guess this hydropower generator will require a flowing stream for mechanical rotation .

May be the rain water will not be able to create that much rotating torque.

Sanjib.A
User Rank
CEO
Re:
Sanjib.A   11/28/2013 12:05:28 PM
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I too like the concept of the personal hydro power turbine. How much flow of water is needed for the turbine to function properly? Does it work with rain or does it need smooth flow of water?

Sanjib.A
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CEO
Re:
Sanjib.A   11/28/2013 12:05:27 PM
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I too like the concept of the personal hydro power turbine. How much flow of water is needed for the turbine to function properly? Does it work with rain or does it need smooth flow of water?

prabhakar_deosthali
User Rank
CEO
Re:
prabhakar_deosthali   11/28/2013 6:27:22 AM
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My vote goes to the "Personal Hydroelectric generator". It will be great help for those campers and trekers  exploring wildlife, those surfers and water rafters. They can keep their mobiles charged while away in the wilderness.

junko.yoshida
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Blogger
self-healing?
junko.yoshida   11/28/2013 12:56:18 AM
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You wrote:

Scientists at Stanford University and the Department of Energy's SLAC National Accelerator Laboratory have created a self-healing battery electrode, which could help pave the way toward more robust high-capacity batteries for electric vehicles and portable electronics.

So, what's the catch? What is standing in the way of getting this technology out of the labs?

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