A lot of research has been done to improve lithium-ion battery safety, cycle life and power output over a range of high and low temperatures, yet understanding the fundamental processes and degradation mechanisms in Li-ion batteries remains a challenge. To understand the degradation processes of lithium-ion batteries, it is important to understand how they operate…. Read more »
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Porous Power’s new microporous membrane will boost Li-ion battery performance
Q&A with Bernard Perry of Porous Power Technologies. In 2006, Porous Power Technologies was formed around a new microporous membrane material designed specifically for use as a lithium-ion battery separator. At that time, most battery separator materials were originally intended for other applications and adapted when the lithium-ion market began to develop. The company’s founders saw an… Read more »
EVSE: the low-hanging fruit of smart city buildout
How installing a few charging stations is more of a long-term solution than meets the eye. We often hear about the need for smart cities, smart grids, and sustainability in general, but what does it really mean? How can we ever hope to build a smart and sustainable global ecosystem, considering the energy-consuming path that… Read more »
CHARGED Electric Vehicles Magazine Issue 8 – June 2013
Subscribe Now Trouble viewing? Read the features inside here. Featuring: The Tech Wildcat Discovery Technologies’ new cathode materials A closer look at coulombic efficiency In-wheel house: Protean Electric’s in-wheel drive system nears production Parker Hannifin races into traction motors EVs: the Holy Grail of multiphysics The Vehicles A reluctant gem: The FIAT 500e EV Taxing… Read more »
Ultracapacitors creep into automotive
Maxwell looks to leverage its early ultracapacitor experience into a ubiquitous, low-cost, high-volume complement to batteries. Power sources like internal combustion engines and advanced battery packs work great as continuous suppliers of energy. But during the highest peak loads, both sacrifice efficiency attempting to meet the power delivery demands. And pushing these devices to their… Read more »
Working together: avoiding EVSE-to-vehicle interoperability issues
Intertek’s Rich Byczek on avoiding EVSE-to-vehicle interoperability issues. Back in January, Plugincars.com published an article by Colby Trudeau – a Honda Fit EV owner, Plug In America volunteer, and electrical engineer at Qualcomm Technologies – that detailed his charging troubles using Ecotality’s Blink charging stations at work. Trudeau found that after about 20 minutes… Read more »
Tesla slightly sweetens financing program
Tesla has announced a couple of small improvements to the financing program that it introduced in April. It is raising the Model S resale value guarantee to make it the highest of any premium sedan (excluding rare, low volume or limited edition vehicles). Buying a Model S through the Tesla financing offering now comes with… Read more »
KAIST discovers method to extend Li-air battery life
Researchers from the Korea Advanced Institute of Science and Technology (KAIST) have discovered a means to extend the lifetime of lithium-air (Li-air) batteries, a technology that offers the promise of higher energy densities than those achievable with conventional lithium-ion batteries. They report their findings in the February issue of the journal ChemSusChem. Li-air batteries are… Read more »
Fisker’s Future: Tony Posawatz on moving the start-up ‘onward’
The feisty California start-up looks to break free of its growing pains and hit cruise control on the Atlantic.
A closer look at switched reluctance motors
The electronically-switched reluctance motor – often shortened to the switched reluctance motor, or SRM – has been gaining in popularity over the last decade because it is simple, robust, and arguably the least expensive of all motor types to manufacture. The reasons for the relatively late blooming of the SRM – the first reluctance motor… Read more »