Remove Charging Remove Energy Remove Ni-Li Remove Transportation
article thumbnail

UNIST team develops new electrolyte additive for high-energy-density Li-ion batteries

Green Car Congress

Researchers at the Ulsan National Institute of Science and Technology (UNIST) in Korea have developed an innovative electrolyte additive that enables a high-energy-density Li-ion battery to retain more than 80% of its initial capacity even after hundreds of cycles. C and fast charging capability (1.9% O 2 cathodes. O 2 cathodes.

Li-ion 417
article thumbnail

ARPA-E awarding $39M to 16 projects to grow the domestic critical minerals supply chain

Green Car Congress

The US Department of Energy’s (DOE’s) Advanced Research Projects Agency-Energy (ARPA?E) E) will award $39 million in funding to 16 projects across 12 states to develop market-ready technologies that will increase domestic supplies of critical elements required for the clean energy transition. Earlier post.)The

Supplies 345
article thumbnail

Argonne researchers use X-rays to understand the flaws of speedy charging

Green Car Congress

A team at Argonne National Laboratory has used spatially resolved energy dispersive X-ray diffraction to obtain a “movie” of lithiation and delithiation in different sections of a Li-ion battery cell and to quantify lithium gradients that develop in a porous graphite electrode during cycling at a 1C rate (full discharge in 1 hour).

Li-ion 186
article thumbnail

Researchers discover how nickel may inhibit charge/discharge rate in Li-ion batteries

Green Car Congress

Simulated zone projection image based on LMNO crystal model with 20% Ni/Li disorder corresponding to blue rectangle. Simulated zone projection image based on LMNO crystal model with 10% Ni/Li disorder corresponding to white rectangle. For example, a layered composite based on lithium nickel manganese oxide Li 1.2

Li-ion 274
article thumbnail

Stanford researchers develop new electrolysis system to split seawater into hydrogen and oxygen

Green Car Congress

Electrolysis of water to generate hydrogen fuel is an attractive renewable energy storage technology. Negatively charged chloride in seawater salt can corrode the anode, however, limiting the system’s lifespan. During electrolysis, the nickel sulfide evolves into a negatively charged layer that protects the anode.

Hydrogen 249
article thumbnail

New coating for layered lithium transition metal cathodes addresses performance and safety issues

Green Car Congress

Layered lithium transition metal oxide cathodes feature a relatively high capacity, making them of importance for Li-ion batteries. A paper describing the development is published in Nature Energy. … This polymer provides the cathode a layer of protection from the battery’s electrolyte as the battery charges and discharges.

Li-ion 191
article thumbnail

New Berkeley Lab spectroscopy technique for in situ measurement of charge dynamics in an operating battery electrode

Green Car Congress

Windows etched into a foil covering allow soft X-rays to measure charge dynamics in an operating electrode. The contrast between the two systems and a relaxation effect in LiFePO 4 is attributed to a phase transformation mechanism, and the mesoscale morphology and charge conductivity of the electrodes. Click to enlarge.

Batteries 286