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. —Kang et al.

Ni-Li 375
article thumbnail

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

Green Car Congress

MIT researchers and colleagues at two national laboratories have developed a sulfonamide-based electrolyte that enables stable cycling of a commercial LiNi 0.8 A limited cyclable Li inventory can be easily depleted by side reactions or become kinetically unreachable due to electronic/ionic isolation. Huang, M.,

Ni-Li 284
article thumbnail

Nanjing researchers design new Li-rich layered cathode

Green Car Congress

Researchers at Nanjing University (China) have introduced a new layered C2/m oxide—Li 2 Ni 0.2 Compared with Li 2 MnO 3 (LMO), LNMR displays superior capacity, a more stable capacity retention rate, higher energy density and average discharge voltage. In such materials, 1/3 of the TM sites are occupied by Li phase.

Ni-Li 365
article thumbnail

New stable water-splitting catalyst doesn’t require expensive iridium

Green Car Congress

Researchers have developed a nickel-stabilized, ruthenium dioxide (Ni-RuO 2 ) anode catalyst for proton exchange membrane (PEM) water electrolysis. The Ni-RuO 2 catalyst shows high activity and durability in acidic OER for PEM water electrolysis. Boyang Li of the University of Pittsburgh is co-lead author of the paper.

Water 411
article thumbnail

New cobalt-free high-voltage spinel cathode material with high areal capacity

Green Car Congress

. … It should be noted, the cost and sustainability of lithium-ion batteries are not only limited by the production of Co and Ni but also potentially limited by the lithium element itself. … The price of Co fluctuates significantly, with the inconspicuous fall of Ni price and continues growing of Li price. —Li et al. (a)

Ni-Li 307
article thumbnail

Researchers show clean solid–electrolyte/electrode interfaces double capacity of solid-state Li batteries

Green Car Congress

Solid-state lithium batteries comprise solid electrodes and a solid electrolyte that exchange lithium (Li) ions during charging and discharging. However, there are still many technical challenges preventing commercialization. Solid-state lithium (Li) batteries using spinel-oxide electrode materials such as LiNi 0.5 0c21586.

Ni-Li 243
article thumbnail

U Texas team develops cobalt-free high-energy lithium-ion battery

Green Car Congress

graduate Wangda Li. codoped NMC (NMCAM) of identical Ni content (89 mol%) synthesized in?house. Ni NMA operates at a higher voltage by ?40 Ni NMA outperforms both NMC and NCA and only slightly trails NMCAM and a commercial cathode after 1000 deep cycles. —Li et al. —Wangda Li. 2020) “High?Nickel