Limited safety, sustainability and recyclability are key drawbacks of today’s lithium-ion battery technology, along with restricted availability of starting materials (e.g. cobalt). In the search for alternative electrochemical energy storage systems for use in e-mobility and for storing energy from renewable sources, a combination of battery and capacitor is very promising: the “hybrid supercapacitor.” It can be charged and discharged as quickly as a capacitor and can store almost as much energy as conventional batteries. In comparison to the latter, it can be charged and discharged much faster and much more frequently: while a lithium-ion battery achieves a service life of a few thousand cycles, a supercapacitor manages around one million charging cycles.
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System made of carbon and salt water
A particularly sustainable, but so far quite unexplored variant of such a hybrid supercapacitor consists of carbon and aqueous sodium iodide (NaI) electrolyte, with a positive battery electrode and a
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- Amazon launched two new smart home products that can move within the home: the Echo Show 10 and Ring Always Home Cam.
- The Echo Show 10 can reorient its display, camera, and speakers to face the user’s direction, while the Ring Always Home Cam is a mini security drone that can fly around the home.
- Both product could serve as a step toward Amazon’s broader ambitions to build an Alexa-enabled home robot, as reports from Business Insider and Bloomberg have indicated.
- But the company will have to overcome serious privacy concerns along the way.
- Visit Business Insider’s homepage for more stories.
Amazon’s presence in the home took a big leap forward this week, and not just because the online retail giant announced a completely redesigned Echo lineup and big updates to Alexa.
Amazon’s smart home devices, whether it be an Echo speaker, Eero mesh router, or Ring security camera, have
A study appearing next week in the journal Nature Communications offers some good news in the search for antiviral drugs for hard-to-treat diseases. Researchers have identified a potential new drug candidate against enterovirus 71, a common cause of hand, foot and mouth disease in infants and young children.
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The compound of interest is a small molecule that binds to RNA, the virus’s genetic material, and changes its 3-D shape in a way that stops the virus from multiplying without harming its human host.
There are currently no FDA-approved drugs or vaccines for enterovirus 71, which affects hundreds of thousands of children each year, particularly in Southeast Asia. While most people get better within 7 to 10 days after suffering little more than a fever and rash, severe cases can cause brain inflammation, paralysis and even death.
The work could pave the way for new treatments for other viral infections as