article thumbnail

Fluorine-incorporated interface enhances cycling stability of Li metal batteries with Ni-rich NCM cathodes

Green Car Congress

Li metal anodes and Ni-rich layered oxide cathodes with high reversible capacities are promising candidates for the fabrication of high energy density batteries. Li/Li + ). O 2 full cell, with a high Coulombic efficiency of 99.98% after 100 cycles at 25 °C. —Lee et al. Yongwon Lee et al. 2019.104309.

Ni-Li 357
article thumbnail

MIT electrolyte enables ultra-high voltage Ni-rich cathodes in Li-metal batteries

Green Car Congress

The electrolyte not only suppresses side reactions, stress-corrosion cracking, transition-metal dissolution and impedance growth on the cathode side, but also enables highly reversible Li metal stripping and plating on the lithium-metal anode (LMA), leading to a compact morphology and low pulverization. Huang, M.,

Ni-Li 284
article thumbnail

New self-purifying electrolyte for high-energy Li-ion batteries

Green Car Congress

A research team in China has developed a new type of electrolyte for high-energy Li-ion batteries with a self-purifying feature that opens a promising approach for electrolyte engineering for next-generation high-energy Li-ion batteries. Electrochemical performance of Li||NMC811 half-cells using different electrolytes. (a)

Li-ion 370
article thumbnail

PNNL team develops composite sulfur/Ni-MOF composite cathode for Li-S batteries showing excellent capacity retention

Green Car Congress

Researchers at Pacific Northwest National Laboratory (PNNL) have used a novel Ni-based metal organic framework (Ni-MOF) significantly to improve the performance of Li-sulfur batteries by immobilizing polysulfides within the cathode structure through physical and chemical interactions at molecular level. Li-S anode work.

Ni-Li 186
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

RECLAIM: Electrochemical Lithium and Nickel Extraction with Concurrent Carbon Dioxide Mineralization ($2,999,997). Feedstocks will include Li/Ni/Ca/Mg-rich igneous and sedimentary minerals. Olivine is a CO 2 -reactive waste product that can be returned as tailings after capture carbon from the air. Harvard University.

Supplies 345
article thumbnail

New high-voltage electrolyte additive supports high energy density and stability in LMNC Li-ion battery; 2x energy density over LiCoO2

Green Car Congress

Korea) has developed a novel high-voltage electrolyte additive, di-(2,2,2 trifluoroethyl)carbonate (DFDEC), for use with the promising lithium-rich layered composite oxide high-energy cathode material xLi 2 MnO 3 ·(1-x)LiMO 2 (M = Mn, Ni, Co). O 2 (Li 1.2 Mn 0.525 Ni 0.175 Co 0.1 O 2 (Li 1.2 136 Wh kg ?1

Li-ion 329