Green Car Congress

FEBRUARY 14, 2022

sulfur phase within carbon nanofibers that enables successful operation of Lithium-Sulfur (Li-S) batteries in carbonate electrolyte for 4000 cycles. Carbonates are known to adversely react with the intermediate polysulfides and shut down Li-S batteries in first discharge. —Pai et al.

Carbon 285

Carbon Li-ion Batteries Battery 285

Green Car Congress

AUGUST 9, 2018

A team of researchers from institutions in China and the US report the design of a negatively charged graphene composite separator for the effective suppression of the polysulfide shuttling effect in Li-sulfur batteries. Alternatively, “adsorption coatings” (e.g., —Lei et al. 2018.07.022.

Li-ion 210

Li-ion Lithium Sulfur China Batteries 210

Green Car Congress

DECEMBER 4, 2013

Cycle performance of Li cells with (a, b) Se?, (c, carbon composite as cathodes in ether-based electrolyte. The researchers have focused on carbon-selenium sulfide composites as an alternative material to the conventional lithium transition metal oxide positive electrode material in standard Li-ion batteries.

Li-ion 225

Li-ion Energy Lithium Ion Lithium Sulfur 225

Cars That Think

DECEMBER 24, 2023

The cell of a flow battery uses two chemical solutions containing ions, one acting as the anolyte (adjacent to the anode), the other as the catholyte (near the cathode). Typical redox flow batteries use ions based on iron chromium or vanadium chemistries; the latter takes advantage of vanadium’s four distinct ionic states.

Lithium Ion 145

Lithium Ion Batteries Battery Li-ion 145

Charged EVs

FEBRUARY 7, 2023

Graphite is a pure form of carbon. Its physical structure allows it to store lithium ions. This crystalline carbon allotrope is good for more than just pencils—it’s found in every EV battery anode, and producing graphite in the forms needed to build high-performance battery cells is a complex and exacting process.

Future 112

Future Batteries Battery Li-ion 112