Search Results Found For: ""Carnegie Mellon University""

MIT researchers use semisolid electrode to prevent short circuits in lithium metal batteries

Researchers may have found ways to prevent dendrite formation in solid-state batteries. Their findings are described in the journal Nature Energy, in a paper by MIT graduate student Richard Park, MIT Professor Yet-Ming Chiang and researchers at MIT and other institutions. Chiang explained, “The only way you can reach the energy densities that are interesting… Read more »

MIT study details plunge in lithium-ion battery costs

MIT researchers analyzed three decades of studies that examined the decline in lithium-ion battery prices, and found that costs have dropped by 97 percent since they were first commercially introduced in 1991. This rate of improvement is much faster than many analysts had claimed, and is comparable to that of photovoltaic panels, which some had… Read more »

Evaluating the effects of automation on range and battery life

A team of researchers at Carnegie Mellon University (CMU) used a vehicle dynamics model to evaluate the effects of automated driving on EV range and battery longevity. They compared autonomous vehicles (SAE levels 4 and 5) with human-driven EVs by calculating the additional energy required to power the automated driving components, as well as the… Read more »

Carnegie Mellon researchers develop semi-liquid lithium metal anode to pair with solid ceramic electrolytes

Researchers from Carnegie Mellon University have developed a semi-liquid lithium metal-based anode that could lead to higher capacity and better safety than typical lithium metal-based batteries that use lithium foil as anodes. The research team published their findings in the June 2019 issue of Joule. “Incorporating a mewtallic lithium anode into lithium-ion batteries has the… Read more »

Zunum’s plug-in hybrid plane will use a turbine from Safran Helicopter Engines

Washington-based Zunum Aero is developing a plug-in hybrid aircraft, which it believes will revolutionize the regional short-haul air travel market. Now Zunum (profiled in the July/August 2017 issue of Charged) has announced that its ZA10 aircraft, which it plans to launch in the early 2020s, will use a turboshaft from Safran Helicopter Engines. Safran’s new… Read more »

Carnegie Mellon creates new method to 3D print battery electrodes

Porous electrodes have been 3D printed in the past using extrusion processes in which a strand of material is extruded from a heated nozzle. Interdigitated, or clasped, structures created with this technique provide space for ion flow, but their limited geometries are quite inefficient. Carnegie Mellon University’s new research has developed a completely different additive process… Read more »

Nanoscale measurement of lithium metal could lead to suppressing dendrite formation

Lithium metal, which can store more energy than carbon, would seem to be an ideal anode material, except for one serious flaw: dendrites, tiny needle-like branching structures that can grow through the battery, eventually causing a short circuit. Now, a joint team of researchers from Caltech and Carnegie Mellon University has measured the strength of… Read more »

ARPA-E awards $3.5 million to develop ultra-high-energy density batteries

The DOE’s Advanced Research Projects Agency-Energy (ARPA-E) has awarded $3.5 million in funding to a team that includes 24M, Sepion Technologies, Berkeley Lab, and Carnegie Mellon University. The funds will be used to develop novel membranes and lithium-metal anodes for a new generation of high-energy-density batteries. 24M’s core technology is semi-solid lithium-ion, a new class… Read more »

New study: Lithium cost swings unlikely to impact battery prices

Global lithium prices have doubled over the last six months, sparking a scramble to secure sources of the metallic element, and causing pundits to ponder whether white lightning may be the new black gold. However, a new study by a Carnegie Mellon University team has found that even large increases in lithium prices are unlikely… Read more »

New Union of Concerned Scientists report: EV life-cycle emissions are half that of an average gas car

Diehard fossil-fuel fans are fond of speculating that EVs may be no cleaner than legacy ICE vehicles, once the emissions resulting from power generation and manufacturing are taken into account. In fact, study after study, including reports from the Union of Concerned Scientists (2012), the University of Minnesota, and Carnegie Mellon University, has shown that,… Read more »