29 May '17, 10am

#Fujitsu develops new Li iron pyrophosphate cathode material with abnormally high voltage for #LIBs

Half-cell assembling was conducted in a dry room (dew point: <-70°C). The mixture of the cathode materials, Ketjen Black and polyvinylidene difluoride in a ratio of 85:10:5 wt% was dispersed in N-methylpyrrolidone. The resulting paste was coated on Al sheet, and then dried in vacuum at 40 °C to evaporate the solvent. The Al sheet was cut out in disks (φ =16 mm), pressed under 9.5 MPa, and then dried in vacuum at 120°C overnight. 2032-type cells were assembled using the cathode sheets mentioned above as a positive electrode, Li metal disks (φ =16 mm) as a negative electrode, 1M LiPF6 solution in a 3:7 v/v mixture of ethylene carbonate/dimethyl carbonate as the electrolyte, and polypropylene separator (φ =18 mm). Galvanostatic charge and discharge measurements were carried out in CC mode (6.95 mA per 1 g of the cathode material). The voltage range was set to 2.0-4.5 V.

Full article: http://www.greencarcongress.com/2017/05/20170529-fujitsu....

Tweets

.@Riceuniversity team devises Li metal anode that completely suppresses Li dendrite formation

[email protected] team devises Li metal anode th...

greencarcongress.com 26 May '17, 9pm

Rice team devises Li metal anode that completely suppresses Li dendrite formation 19 May 2017 Rice University scientists h...

Alabama Graphite reports high-performance Si-enhanced coated spherical purified graphite (Si-CSPG) for LIBs

Alabama Graphite reports high-performance Si-en...

greencarcongress.com 29 May '17, 4pm

AGC is 100% owner of the only advanced-stage graphite project in the contiguous United States and all requisite downstream...