Power Management

Nanomaterial Extends Lithium-Sulfur Battery Lifespan

A new nanomaterial could extend the lifespan of lithium-sulfur batteries, and therefore the driving range of electric vehicles.Pacific Northwest National Laboratory researchers added the powder to the battery's cathode to capture problematic polysulfides that usually cause lithium-sulfur batteries to fail after a few charges.Metal organic frameworks — also called MOFs — are crystal-like compounds made of metal clusters connected to organic molecules, or linkers. Together, the clusters and linkers assemble into porous 3-D structures. During lab tests, a lithium-sulfur battery with PNNL's MOF cathode maintained 89 percent of its initial power capacity after 100 charge-and discharge cycles. Having shown the effectiveness of their MOF cathode, PNNL researchers now plan to further improve the cathode's mixture of materials so it can hold more energy.SourceAlso: Check out other Materials tech briefs.

Posted in: News, Batteries, Electronics & Computers, Power Management, Materials, Metals, Nanotechnology

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Scientists Demonstrate Electrical Properties of Topological Insulators

Scientists at the U.S. Naval Research Laboratory (NRL) have demonstrated for the first time that one can electrically access the remarkable properties predicted for a topological insulator (TI). They used a ferromagnetic metal/tunnel barrier contact as a voltage probe to detect the spin polarization created in the topologically protected surface states when an unpolarized bias current is applied. This accomplishment identifies a successful electrical approach that provides direct access to the TI surface state spin system, significantly advances our fundamental understanding of this new quantum state, and enables utilization of the remarkable properties these materials offer for future technological applications.

Posted in: News, Board-Level Electronics, Electronic Components, Electronics & Computers, Power Management, Semiconductors & ICs

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Heart Pump with Behind-the-Ear Power Connector

One-third of patients with heart pumps develop infection at abdominal connection. Cardiac surgeons and cardiologists at the University of Maryland Heart Center are part of a multi-center clinical trial evaluating the efficacy of powering heart pumps through a skull-based connector behind the ear. The pumps, called left ventricular assist devices (LVADs), support the heart’s main pumping chamber, the left ventricle. LVADs are implanted in the chest and powered with external batteries. Typically, these devices, which are used for patients with severe heart failure, are powered through an electrical cord connected at the abdomen, where potentially deadly infections can develop.

Posted in: Briefs, MDB, Briefs, Electronic Components, Electronics, Power Management, Power Supplies, Drug Delivery & Fluid Handling, Implants & Prosthetics, Medical, Patient Monitoring, Fluid Handling, Power Transmission

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Robotic Exoskeleton Vastly Improves Quality of Life

Worldwide an estimated 185 million people use a wheelchair daily. A company based in Auckland, New Zealand, has developed an innovative robotic technology that helps people with mobility impairment get back on their feet— the Rex Bionics robotic exoskeleton. Its integrated maxon motors help to ensure smooth limb movement.

Posted in: Features, MDB, Articles, Electronics, Power Management, Power Supplies, Manufacturing & Prototyping, Mechanical Components, Implants & Prosthetics, Medical, Orthopedics, Rehabilitation & Physical Therapy, Motion Control, Motors & Drives, Positioning Equipment, Power Transmission, Sensors

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Hybrid and Electric Vehicle Test System

SAKOR Technologies, Inc. (Okemos, MI) designed and installed a complete turnkey Hybrid and Electric Vehicle Test System for UQM Technologies, Inc. (Longmont, CO), a manufacturer of high-efficiency electric propulsion systems. UQM will use the system to test inverters and traction motors for use in hybrid and electric vehicles for the automotive, commercial truck, bus, and military markets.

Posted in: Products, Batteries, Electronics, Power Management, Power Supplies, Energy Efficiency, Test & Measurement, Transportation

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Starting Point for Overcoming Barrier to Fusion Power

The accuracy of a new model for predicting the size of a key barrier to fusion power, which was developed by physicist Robert Goldston of the U.S. Department of Energy’s Princeton Plasma Physics Laboratory (PPPL), has been confirmed. Goldston’s model predicts the width of what physicists call the “scrape-off layer” in tokamaks, the most widely used fusion facilities.

Posted in: News, News, Power Management, Energy

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A Better Understanding of High-Temperature Superconductors

Superconductivity, in which electric current flows without resistance, promises huge energy savings – from low-voltage electric grids with no transmission losses, super-efficient motors and generators, and myriad other schemes. But such everyday applications still lie in the future, because conventional superconductivity in metals can’t do the job.

Posted in: News, News, Power Management, Energy, Energy Storage, Lasers & Laser Systems

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