René Blaser, Poster On The Sony Side - Sony Hi-Fi Radio TV Phono Video, 1975. For Seyffer & Co. AG,

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Current phone background. (Screenshot. I like my phone minimalistic :-). Artwork by Leinil Francis Yu.)

Peter Bristol for Juniper - Thin Lamp Family

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This supercapacitor battery can be recharged 30,000 times

A thin, flexible supercapacitor boasts high energy and power densities. Credit: University of Central Florida

Everyone and anyone with a smartphone know it is not long before your phone holds a charge for less and less time as the battery begins to degrade. But new research by scientists at the NanoScience Technology Center at the University of Central Florida (UCF), USA, could change that. The team have developed a new method for producing flexible supercapacitors that can store greater amounts of energy and can be recharged over 30,000 times without degradation. This new method could transform technology such as electric vehicles and mobile phones in the future.

‘If you were to replace the batteries with these supercapacitors, you could charge your mobile phone in a few seconds and you wouldn’t need to charge it again for over a week,’ said University of Central Florida researcher Nitin Choudhary.

The UCF team has attempted to apply newly discovered 2D materials that measure just a few atoms thick to supercapacitors. Other scientists have also tried formulations with other 2D materials including graphene, but had only limited success. The new supercapacitors are composed of millions of nanometre-thick wires coated with shells of 2D materials. The core facilitates the super-fast charging and discharging that makes supercapacitors powerful, and the 2D coating delivers the energy storage ability.

‘We developed a simple chemical synthesis approach so we can very nicely integrate the existing materials with the two-dimensional materials,’ said Yeonwoong Eric Jung, assistant professor of the study. Jung is working with UCF’s Office of Technology Transfer to patent the new process. ‘It’s not ready for commercialisation,’ Jung said. ‘But this is a proof-of-concept demonstration, and our studies show there are very high impacts for many technologies.’

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15 years Repairing Electronics Here: With Liquid Damaged Electronics, DON'T Use Rice, Instead Use A Fan (explanation inside)

I’ve spent nearly 20 years repairing liquid/water damaged electronics. More specifically, cell phones. In the old days, we’d open the phones up, clean the corrosion, resolder, etc. Recently, they’ve (the manufacturers) moved away from local repairs and moved more towards warranty replacements, swap outs (FRU = factory replacement units) & insurance. Now if you want your electronics repaired locally, you have to visit 3rd party independent people since you can no longer have it done in a corporate-ran store.

I know rice is the go-to recommendation for water damaged phones and other electronics, and it works, to an extent. It will passively absorb moisture. Unfortunately, you don’t want to passively absorb the moisture, you want to actively remove the moisture as quickly as possible.  The longer the moisture is sitting on those circuit boards, the higher the risk of corrosion. And corrosion on electrical components can happen within just a few short hours. If the damage isn’t severe, we’d take contact cleaner (essentially 92% or better rubbing alcohol, the higher the percentage, the quicker it will evaporate) and scrub the white or green powder (the corrosion that formed) with a toothbrush to remove it. If that corrosion crosses contacts, it can cause the electronics to act up, fail or short out. The liquid itself almost never is directly responsible for failed consumer electronics, it’s the corrosion that takes place after the fact (or the liquid damaging the battery, a new battery fixes this issue obviously).

Every time I see someone recommend rice I kinda twinge a little inside because while it does dry a phone out slightly better than just sitting on a counter, it really doesn’t do much to prevent the corrosion that’s going to be taking place due to the length of time the liquid has had to fester inside the phone or whatever.

What you want to do is set the item in front of a fan with constant airflow. Take the device apart as much as you can without ruining it (remove the battery, etc) so that the insides can get as much airflow as possible. Even if it’s not in direct contact with the air, the steady air blowing over the device will create a mini vacuum effect and pull air from inside. It’s just a small amount but it’s significantly better than just allowing the rice to passively absorb the evaporated moisture. True, rice can act as a desiccant, but a fan blowing over whatever is orders of magnitude faster.

I personally will take apart a piece of electronics completely, and put those items in front of a fan, and if you have the relevant knowledge, I highly recommend doing so as well. But if you don’t, it’s not that big of an issue. What you want to avoid at all costs, however, is heat. Do not put your phone inside an oven or hot blow dryer, heat can damage electronics just as bad as liquid, sometimes more so. Heat, extreme cold and liquid are bad for electronics & cell phones. A fan (lots of airflow) is 99 out of 100 times better at removing moisture quickly than rice. I would say 100 out of 100 but I’m sure there’s going to be some crazy situation or exception I haven’t thought of that someone will come in and point out. I’d like to remind people that exceptions are just that, they don’t invalidate the rule.

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