Green Car Congress

OCTOBER 18, 2018

Carbon fibers have already beeen demonstrated as high-capacity Li-ion battery anodes, opening the way for their use as structural electrodes—i.e., simultaneously carrying mechanical load and storing electrical energy. The researchers studied the microstructure of different types of commercially available carbon fibers.

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Carbon Fiber Carbon Batteries Battery 286

Green Car Congress

FEBRUARY 10, 2013

Researchers from the University of Wollongong, Australia and the Ulsan National Institute of Science and Technology (UNIST), S. Korea, have developed a germanium oxide/germanium nanocomposite (GeO 2 /Ge/C) anode material for Li-ion batteries that shows a high capacity of up to 1860 mAh/g at 1 C (2.1 Li+ (2152 mAh/ g).

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Li-ion Conversion Carbon Lithium Ion 316

Green Car Congress

JULY 19, 2020

Researchers from the Cockrell School of Engineering at The University of Texas at Austin have developed a cobalt-free high-energy lithium-ion battery, eliminating the cobalt and opening the door to reducing the costs of producing batteries while boosting performance in some ways. The cathode in their study is 89% nickel.

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Lithium Ion Ni-Li Texas Li-ion 307

Green Car Congress

NOVEMBER 12, 2015

Researchers at Vanderbilt University have demonstrated that ultrafine sizes (∼4.5 nm, average) of iron pyrite (FeS 2 ) nanoparticles are advantageous to sustain reversible conversion reactions in sodium ion and lithium ion batteries. A paper on their work is published in the journal ACS Nano.

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Li-ion Sodium Lithium Sulfur Batteries 150

Green Car Congress

AUGUST 22, 2019

The researchers made their discovery by developing a technique to measure the amounts of inactive lithium species on the anode—a first in the field of battery research—and studying their micro- and nanostructures. As the battery cycles, its stores of active lithium and electrolyte are depleted. —Professor Meng.

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San Diego Batteries Battery Lithium Ion 320

Green Car Congress

NOVEMBER 17, 2013

Two Stanford/SLAC labs—one studying next-generation lithium-ion batteries and the other working on synthetic human skin—have combined their expertise and created an advanced silicon anode that can heal its own cracks after extended cycles of charging and discharging. Wang et al., Nature Chemistry) Click to enlarge.

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Li-ion Polymer Batteries Battery 230

Green Car Congress

JUNE 10, 2019

Because of their high energy-storage density, materials such as metal oxides, sulfides, and fluorides are promising electrode materials for lithium-ion batteries in electric vehicles and other technologies. This study uniquely represents the in situ lithiation of a precycled sample. However, their capacity fades very rapidly.

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Lithium Ion Li-ion Batteries Battery 236

Green Car Congress

MARCH 13, 2014

have developed an analysis method that enables direct observation of electron activity in the cathode material of lithium-ion batteries during charging and discharging. a 100% subsidiary of Nissan Motor Company, developed the analysis method in a joint R&D effort with Tokyo University, Kyoto University and Osaka Prefecture University.

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Li-ion Nissan Lithium Ion Ni-Li 244

Green Car Congress

MARCH 9, 2021

Instead of using machine learning just to speed up scientific analysis by looking for patterns in data—as typically done—the researchers combined it with knowledge gained from experiments and equations guided by physics to discover and explain a process that shortens the lifetimes of fast-charging lithium-ion batteries.

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MIT Insight Lithium Ion Charging 236

Green Car Congress

OCTOBER 10, 2017

Stanford researchers have developed a sodium-ion battery (SIB) that can store the same amount of energy as a state-of-the-art lithium ion, at substantially lower cost. The researchers focused mainly on the favorable cost-performance comparisons between their sodium-ion battery and lithium. —Lee et al.

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Sodium Li-ion Batteries Battery 186

Green Car Congress

MARCH 10, 2013

A new study by Charles J. Benson from Stanford University and Stanford’s Global Climate and Energy Project (GCEP) has quantified the energetic costs of 7 different grid-scale energy storage technologies over time. The Stanford study considered a future US grid where up to 80% of the electricity comes from renewables.

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Energy Storage Grid Cost Of Energy 304

Green Car Congress

OCTOBER 28, 2022

The selected projects, led by universities, national laboratories, and the private sector aim to develop commercially scalable technologies that will enable greater domestic supplies of copper, nickel, lithium, cobalt, rare earth elements, and other critical elements. Feedstocks will include Li/Ni/Ca/Mg-rich igneous and sedimentary minerals.

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Supplies Ni-Li Carbon Universal 345

Green Car Congress

JULY 1, 2019

The research, published in the journal Joule , builds on innovations first reported in Science in 2017 by the same research group at the University of California San Diego and the university spinout South 8 Technologies. —Yang et al. for 500 charge cycles at room temperature.

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Gas San Diego Li-ion Batteries 247

Green Car Congress

NOVEMBER 27, 2019

Researchers from Huazhong University of Science and Technology in China and George Washington University in the US report in a new paper in the ACS journal Accounts of Chemical Research that a range of important carbon nanomaterials can be produced at high yield by molten carbonate electrolysis. Source: Prof. 2019.11.019. 9b00405.

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Carbon CO2 Range Solar 376

Green Car Congress

JUNE 5, 2014

Woven carbon fiber can act as an electrode for lithium ion batteries. Researchers in Sweden are exploring the use of carbon fiber as an active electrode in a multifunctional structural Li-ion battery in an electric car; i.e., electrical storage is incorporated into the body of the car. Photo: Peter Larsson) Click to enlarge.

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Carbon Fiber Carbon Li-ion Electric Vehicles 317

Green Car Congress

SEPTEMBER 9, 2014

Using a neutron beam, chemists and engineers at The Ohio State University have been able to track the flow of lithium atoms into and out of an anode in real time as a Li-ion battery charged and discharged. They may also be less prone to overheating. By using in?situ —Liu et al.

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Ohio Li-ion Lithium Ion Battery 218

Green Car Congress

SEPTEMBER 23, 2009

The cell charger array constructed at the Dahn laboratory, Department of Physics and Atmospheric Science, Dalhousie University. In electrochemical cells, Coulombic efficiency refers to the ratio of the charge delivered during discharge to the amount stored during charging. the Keithley 220 devices are programmable current sources.

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Li-ion Lithium Ion Charging Batteries 186

Green Car Congress

APRIL 27, 2014

Capacity and coulombic efficiency versus cycle index of Li-PGN cathodes at a rate of ~1C. O 2 and Li 3 V 1.98 Researchers at Rensselaer Polytechnic Institute have developed a safe, extended cycling lithium-metal electrode for rechargeable Li-ion batteries by entrapping lithium metal within a porous graphene network (Li-PGN).

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Recharge Li-ion Carbon Batteries 252

Green Car Congress

APRIL 6, 2015

A team at Stanford University, led by professor Hongjie Dai, has developed a high-performance, safe, fast-charging aluminum-ion battery that can last for thousands of cycles. The Al-ion battery—comprising an aluminum anode, graphite cathode and ionic liquid electrolyte—produces about half the voltage of a Li-ion battery.

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Li-ion Taiwan Lithium Ion Batteries 150

Green Car Congress

DECEMBER 12, 2017

However, most of these Li-rich materials suffer from voltage drop and capacity fading during cycling, thus limiting their use. Gent, a Stanford University graduate student and Siebel Scholar who led the study. That’s why people have been so excited about the prospect of storing a lot more energy in lithium-rich cathodes.

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Li-ion Lithium Ion Battery Batteries 150

Green Car Congress

APRIL 21, 2011

Flow diagram of the battery system, defined by the functional unit of 50 MJ stored and delivered to the powertrain. Researchers from the Norwegian University of Science and Technology (NTNU) have performed life cycle assessments (LCA) of three batteries for plug-in hybrid (PHEV) and full performance battery electric (BEV) vehicles.

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Nickel Metal Hydride NiMH PHEV Li-ion 334

Green Car Congress

DECEMBER 2, 2013

Schematic showing the chemical reduction reaction of one Li 2 S 6 molecule by lithium to form six Li 2 S molecules, involving the diffusion/driving of lithium out of the graphene layers in the graphite. The approach offers a new way to introduce lithium into the cathode in Li?S air, or Li?organic Lithium-sulfur (Li?S)

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Austin Li-ion Lithium Sulfur Batteries 247

Green Car Congress

SEPTEMBER 28, 2020

Stanford University scientists have identified a new solid-state Li-ion electrolyte predicted to exhibit simultaneously fast ionic conductivity, wide electrochemical stability, low cost, and low mass density. Their findings are published in a study in the journal ACS Applied Materials & Interfaces. sulfur (Li?B?S)

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Li-ion Lithium Ion Batteries Battery 397

Green Car Congress

DECEMBER 28, 2012

A team at the University of St. Peter Bruce has further investigated the behavior of carbon as a possible porous cathode for aprotic Li-air cells; a paper on their work is published in the Journal of the American Chemical Society. Given the role of carbon as a possible porous positive electrode for nonaqueous Li?O

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Carbon Li-ion Batteries Battery 240

Green Car Congress

OCTOBER 3, 2014

Researchers at The Ohio State University have developed a novel strategy to improve the efficiency and performance of non-aqueous lithium-oxygen (Li-air) batteries. O 2 systems require an open system to obtain oxygen from the air; Li metal must also be used as the metal electrode to provide the lithium source. Earlier post.).

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Solar Li-ion Batteries Battery 262

Green Car Congress

DECEMBER 8, 2010

An interdisciplinary team of researchers at the University of Maryland’s A. Using TMV, the researchers can greatly increase the electrode surface area and its capacity to store energy and enable fast charge/discharge times. James Culver’s work is conducted in collaboration with Purdue University professor Michael Harris.

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Maryland Li-ion Energy Storage Battery 210

Green Car Congress

DECEMBER 13, 2016

Researchers at the University of Texas at Austin, including Prof. As reported in their paper in the RSC journal Energy & Environmental Science , the cells use a solid glass electrolyte having a Li + or Na + conductivity σ i > 10 -2 S cm -1 at 25°C with a motional enthalpy ΔH m ≈ 0.06 The electrolyte membrane was 0.06 Click to enlarge.

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Low Cost Recharge Austin Li-ion 150

Green Car Congress

APRIL 1, 2011

Researchers at the University of Texas, including Dr. John Goodenough, are proposing a strategy for high-capacity next-generation alkali (lithium or sodium)-ion batteries using water-soluble redox couples as the cathode. The high energy storage has stimulated a worldwide study of Li-air batteries. Credit: ACS, Lu et al.

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Sodium Water Li-ion Texas 218

Cars That Think

DECEMBER 30, 2021

No battery is perfect, however, so engineers keep pushing for new and improved ways to store those electrons. The gravity batteries described in this story lift giant weights in the air or up mine shafts to store excess electricity, releasing the weights later on to recover the stored energy.

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Hydrogen Molten Salt Green China 105

Green Car Congress

DECEMBER 7, 2016

and the University of Surrey, in collaboration with the University of Bristol, have developed new, crosslinked gel-matrix polymer electrolytes exhibiting measured capacitance values more than 100 times those of conventional electrolytes. Researchers from Augmented Optics Ltd.

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Energy Polymer Batteries Battery 150

Green Car Congress

OCTOBER 19, 2016

A team at the University of Michigan (U-M) has used operando video microscopy to develop a comprehensive understanding of the voltage variations observed during Li metal cycling, which is directly correlated to dendrite growth. Then, they linked the voltage patterns to specific dendrite activity.

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Li-ion Lithium Sulfur Lithium Ion Battery 150

Green Car Congress

JUNE 29, 2011

Volkswagen study Golf Variant twïnDRIVE. Volkswagen, in cooperation with 6 project partners and the German Ministry of the Environment, presented in Berlin the current status of the “Fleet study in electric mobility” that was initiated in July 2008. Li-ion packs. Click to enlarge. Earlier post.)

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Plug-in Fleet Plug Hybrid 210

Green Car Congress

JUNE 21, 2016

The battery storage system also includes a voltage converter and power electronics to manage the energy flow between renewable energy sources, the house interface, and the Li-Ion high-voltage battery from the BMW i3. In 2013, BMW and the University of San Diego installed a micro grid application with Battery 2nd Life MINI E batteries.

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Energy Storage BMW Energy Batteries 210

Green Car Congress

FEBRUARY 8, 2019

A new study led by researchers from Stanford University and the Department of Energy’s SLAC National Accelerator Laboratory and Lawrence Berkeley National Laboratory has provided insight into a phenomenon that both helps and hurts Li-ion battery performance.

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Insight Li-ion Lithium Ion Batteries 239

Green Car Congress

OCTOBER 30, 2012

A team from Nankai University (Tianjin, China) has shown that “MXenes”—exfoliated 2D carbide and carbonitride nanosheets that are structurally similar to graphene, where M represents transition metals, and X is either C or/and N—are promising anode materials for Li-ion batteries. —Tang et al. —Tang et al.

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Li-ion Universal Batteries Battery 225

Green Car Congress

NOVEMBER 9, 2022

Stanford University researchers have devised a new way to make lithium-ion battery packs last longer and suffer less deterioration from fast charging. Related research has centered on single lithium-ion cells, which generally don’t lose charge capacity as quickly as full battery packs do. —Simona Onori.

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Li-ion Lithium Ion Batteries Battery 186

Green Car Congress

APRIL 30, 2010

This process is less than 1% efficient at converting sunlight to stored chemical energy. Electrofuels approaches will use organisms able to extract energy from other sources, such as solar-derived electricity or hydrogen or earth-abundant metal ions. NC State University. Medical University of South Carolina. of Georgia).

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Carbon Batteries Battery Li-ion 249