Micro-supercapacitors are a promising alternative to micro-batteries because of their high power and long lifetime. They have been in development for about a decade but until now they have stored considerably less energy than micro-batteries, which has limited their application. Now researchers in the Laboratoire d’analyse et d’architecture des systèmes (LAAS-CNRS)1 in Toulouse and the INRS2 in Quebec have developed an electrode material that means electrochemical capacitors produce results similar to batteries, yet retain their particular advantages.
This work was published on September 30, 2015 in Advanced Materials.
With the development of on-board electronic systems3 and wireless technologies, the miniaturization of energy storage devices has become necessary. Micro-batteries are very widespread and store a large quantity of energy due to their chemical properties. However, they are affected by temperature variations and suffer from low electric power and limited lifetime (often around a few hundred charge/discharge cycles). By contrast, micro-supercapacitors have high power and theoretically infinite lifetime, but only store a low amount of energy.
Micro-supercapacitors have been the subject of an increasing amount of research over the last ten years, but no concrete applications have come from it. Their lower energy density, i.e. the amount of energy that they can store in a given volume or surface area, has meant that they were not able to power sensors or microelectronic components. Researchers in the Intégration de systèmes de gestion de l’énergie team at LAAS-CNRS, in collaboration with the INRS of Quebec, have succeeded in removing this limitation by combining the best of micro-supercapacitors and micro-batteries.
They have developed an electrode material whose energy density exceeds all the systems available to date.
The electrode is made of an extremely porous gold structure into which ruthenium oxide has been inserted. It is synthesized using an electrochemical process. These expensive materials can be used here because the components are tiny: of the order of square millimeters. This electrode was used to make a micro-supercapacitor with energy density 0.5 J/cm², which is about 1000 times greater than existing micro-supercapacitors, and very similar to the density characteristics of current Li-ion micro-batteries.
With this new energy density, their long lifetime, high power and tolerance to temperature variations, these micro-supercapacitors could finally be used in wearable, intelligent, on-board microsystems.
The Latest on: Micro-supercapacitor
[google_news title=”” keyword=”micro-supercapacitor” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]
via Google News
The Latest on: Micro-supercapacitor
- Super Micro Computer: Time to Buy This Magnificent Artificial Intelligence (AI) Stock as It Could Soar at Least 41% After Its Latest Pullbackon May 6, 2024 at 2:16 am
Shares of Super Micro Computer (NASDAQ: SMCI) were in sell-off mode after the company released fiscal 2024 third-quarter results (for the three months ended March 31) on April 30. That may seem a ...
- AMD, Super Micro tumble as earnings fall shorton May 1, 2024 at 4:18 pm
May 1 (Reuters) - Advanced Micro Devices and Super Micro Computer led a selloff in chip stocks on Wednesday after their earnings disappointed investors who had piled into the sector on optimism ...
- Why Super Micro’s stock is falling despite an upbeat growth outlookon May 1, 2024 at 7:02 am
Super Micro Computer Inc. beat estimates with its revenue forecast for the current quarter as the company expects to continue capitalizing on artificial-intelligence spending. So why were shares ...
- Super Micro misses quarterly revenue estimates as inventory up, shares down 10%on April 30, 2024 at 6:19 pm
Super Micro aimed to stay in its 14% to 17% gross margin range over the long term, he added, despite some analysts saying the company's quarterly forecast implied margins below that range.
- A Stretchy, Rubber-Like Energy Storage Device for Wearable Techon April 25, 2024 at 5:00 pm
Micro supercapacitors *1 (MSCs) have emerged as a promising candidate for deformable energy storage, due to high-power density, rapid charging, and long cycle life. However, the fabrication of ...
- Stretchy power! Wearables get flexible energy storage in new breakthroughon April 25, 2024 at 5:53 am
Micro supercapacitors have emerged as a promising alternative providing higher power density, rapid charging capabilities, and long lifespan.
- Rubber-like stretchable energy storage device fabricated with laser precisionon April 24, 2024 at 1:36 pm
Micro supercapacitors (MSCs) have emerged as a promising candidate for deformable energy storage, due to high-power density, rapid charging, and long cycle life. However, the fabrication of ...
- This is Super Micro’s path to $1,500, according to the stock’s biggest bullon April 17, 2024 at 9:08 pm
That’s what Loop Capital’s $1,500 price target on shares of Super Micro Computer Inc. SMCI implies. That new target, which came out Tuesday morning and is up from $600 previously, suggests ...
- The Best Micro Four Thirds Lenses for 2024on April 17, 2024 at 5:00 pm
For Micro Four Thirds, look for lenses that cover angles wider than 12mm. The Olympus Pro 8-25mm F4 zoom is one of our favorite options, and you can step up to the 7-14mm zoom if you want an f/2.8 ...
- Could Super Micro Stock Help You Become a Millionaire?on April 16, 2024 at 9:10 pm
Super Micro is a direct beneficiary of AI-driven hardware demand. Its market cap likely influences the company's role as a "millionaire maker." However, a partnership with Nvidia has stoked demand ...
via Bing News