article thumbnail

Researchers in Korea propose graphene/Ni foam as Li metal storage medium for advanced batteries

Green Car Congress

Researchers in Korea have developed three-dimensional monolithic corrugated graphene on nickel foam electrode as a Li metal storage framework in carbonate electrolytes. Therefore, hybrid engineering to prevent dendritic Li growth and increase the coulombic efficiency in highly reactive electrolytes is essential. 2018.12.075.

Ni-Li 375
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

China team develops highly active catalyst for hydrogen production from methanol-water

Green Car Congress

Under optimized conditions, Ni/?-MoC In a paper in the Journal of the American Chemical Society , the team reported that Ni is atomically dispersed over ?-MoC MoC via carbon bridge bonds, forming a Ni 1 –C x motif on the carbide surface. -MoC MoC via carbon bridge bonds, forming a Ni 1 –C x motif on the carbide surface.

Ni-Li 382
article thumbnail

UMD team uses high concentration of LiFSI salt to suppress dendrite formation on Li-metal anode; paired with Ni-rich cathode

Green Car Congress

of Li deposition and stripping, along with an anodic stability of >5.5 Pairing a Li-metal anode in this electrolyte with and LiNi 0.6 mAh/cm 2 ) created a NMC622||Li cell, which showed a high capacity retention of 86% after 100 cycles at a high cutoff voltage of 4.6 Pairing a Li-metal anode in this electrolyte with and LiNi 0.6

Ni-Li 186
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