Batteries
Engineers Prepare Battery Module Swapping Approach for Electric Cars
Posted in Batteries, Electronics & Computers, Power Management, Solar Power, Renewable Energy, Energy, News, Automotive on Friday, 19 September 2014
Imagine being able to switch out the batteries in electric cars just like you switch out batteries in a photo camera or flashlight. A team of engineers at the University of California, San Diego, are trying to accomplish just that, in partnership with a local San Diego engineering company.

Rather than swapping out the whole battery, which is cumbersome and requires large, heavy equipment, engineers plan to swap out and recharge smaller units within the battery, known as modules.

Swapping battery modules could also have far-reaching implications for mobile and decentralized electrical energy storage systems such as solar backup and portable generators. The technology can make energy storage more configurable, promote safety, simplify maintenance and eventually eliminate the use of fossil fuels for these applications.

Engineers not only believe that their approach is viable, but also plan to prove it. They will embark on a cross-country trip with a car powered by the removable, rechargeable M-BEAM, or Modular Battery Exchange and Active Management, battery modules.  They plan to drive from coast to coast only taking breaks that are a few minutes long to swap out the modules that will be recharged in a chase vehicle. They believe they can drive from San Diego to the coast of South Carolina less than 60 hours — without going over the speed limit.

Source

Also: Learn about a Full-Cell Evaluation/Screening Technique for New Battery Chemistries.
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Germanium Nanowires Could Improve Batteries
Posted in Batteries, Power Supplies, Materials, Metals, Medical, News, MDB on Thursday, 04 September 2014
A team of scientists at Missouri University of Science and Technology, Rolla, developed a one-step approach to growing germanium nanowires from an aqueous solution. They say that their process may lead to a simpler, less expensive way to use germanium in lithium-ion batteries.
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Water Splitter Runs on AAA Battery
Posted in Batteries, Electronics & Computers, Power Management, Alternative Fuels, Green Design & Manufacturing, Materials, Metals, Energy, News on Friday, 22 August 2014
Scientists at Stanford University have developed a low-cost, emissions-free device that uses an ordinary AAA battery to produce hydrogen by water electrolysis.  The battery sends an electric current through two electrodes that split liquid water into hydrogen and oxygen gas. Unlike other water splitters that use precious-metal catalysts, the electrodes in the Stanford device are made of inexpensive and abundant nickel and iron.

In addition to producing hydrogen, the novel water splitter could be used to make chlorine gas and sodium hydroxide, an important industrial chemical.

Splitting water to make hydrogen requires no fossil fuels and emits no greenhouse gases. But scientists have yet to develop an affordable, active water splitter with catalysts capable of working at industrial scales.

"It's been a constant pursuit for decades to make low-cost electrocatalysts with high activity and long durability," said Stanford University Professor Hongjie Dai. "When we found out that a nickel-based catalyst is as effective as platinum, it came as a complete surprise."

Source

Also: Learn about a Proton Exchange Membrane Fuel Cell.
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Sweat Powers These Tattoo Biobatteries
Posted in Batteries, Power Supplies, Medical, Patient Monitoring, News, MDB on Monday, 18 August 2014
A team of researchers at the University of California, San Diego, has designed a sensor applied as a temporary tattoo that can not only monitor a person’s progress during exercise but produce power generated by their perspiration that may be used to energize small electronic devices.
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Designing a Pure Lithium Anode
Posted in Batteries, Electronic Components, Power Supplies, Electronics, Power Management, Medical, News, MDB on Tuesday, 05 August 2014
The race is on to design smaller, cheaper, and more efficient rechargeable batteries to meet power storage needs. Now, a team of researchers at Stanford University report that they have taken a big step toward designing a pure lithium anode, which, they say, would greatly advance current lithium ion batteries.
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FDA Recognizes Two UL Battery Safety Standards for Medical Devices
Posted in Batteries, Electronic Components, Power Supplies, FDA Compliance/Regulatory Affairs, Medical, News, MDB on Wednesday, 23 July 2014
UL (Underwriters Laboratories), Northbrook, IL, announced that the FDA has recognized two UL battery safety standards as consensus standards for medical devices incorporating lithium or nickel-based batteries. The two standards are UL 2054 - Standard for Household and Commercial Batteries, and UL 1642 - Standard for Lithium Batteries (Cells).
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New Chemistry Enables Longer-Lived Batteries
Posted in Batteries, Electronic Components, Power Supplies, Electronics, Medical, Patient Monitoring, News, MDB on Wednesday, 07 May 2014
Researchers at the Department of Energy’s Oak Ridge National Laboratory (ORNL) in Tennessee say they have developed a new type of battery chemistry aimed at producing batteries that last longer than previously thought possible.
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