Green Car Congress
AUGUST 26, 2021
Researchers at Chalmers University of Technology, Sweden, have developed a nanometric graphite-like anode for sodium ion (Na + storage), formed by stacked graphene sheets functionalized only on one side, termed Janus graphene. The estimated sodium storage up to C 6.9 Na is comparable to graphite for standard lithium ion batteries.
Green Car Congress
AUGUST 1, 2011
Researchers at Justus Liebig University, Giessen, Germany, have improved the performance of sodium-ion batteries ( earlier post ) by using tailor-made carbon materials with hierarchical porosity for the anode instead of common carbon-based anode materials. 1 at C/5 while exhibiting excellent rate capability and reasonable cycle life.
Green Car Congress
OCTOBER 13, 2010
Schematic of a sodium-nickel chloride cell with planar design. A planar (flat) sodium-nickel chloride battery could deliver 30% more power at lower temperatures than the typical cylindrical design, according to researchers at the US Department of Energy’s Pacific Northwest National Laboratory (PNNL). Click to enlarge.
Green Car Congress
JUNE 1, 2016
The process produces a toxic byproduct referred to as black liquor—a primarily liquid mixture of pulping residues (such as lignin and hemicellulose) and inorganic chemicals from the Kraft process (sodium hydroxide and sodium sulfide, for example). The kraft process converts wood into wood pulp for paper production.
Green Car Congress
JUNE 12, 2013
Lithium-intercalation compounds and sodium-intercalation compounds are used for anode and cathode, respectively. Sodium-ion based rechargeable batteries (SIBs, e.g., earlier post ) are of interest due to sodium’s abundance, far lower prices, and a greener synthesis while maintaining a similarity in ion-insertion chemistry.
Green Car Congress
AUGUST 24, 2016
The shelf-life of stored charge in rechargeable devices does not scale linearly with maximum SP and has led to trends referred to as ‘range-anxiety’, ‘compulsive charging’, etc. Comparison of commercially available electric vehicles driving range to recharge time (min) (for a full recharge), abbreviated as MPM (and for use akin to MPG).
Green Car Congress
JANUARY 29, 2018
Although silicon is an abundantly available element with ten times the gravimetric energy density of graphite, several performance issues continue to limit its commercial exploitation. However, it also possible to separate and manipulate a few connected layers of graphene giving a material researchers refer to as few-layer graphene (FLG).
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