Green Car Congress
SEPTEMBER 28, 2015
Researchers from Central South University in Changsha, China, have developed a separator with a nitrogen-doped porous hollow carbon sphere (NHC) coating for use in Li-S batteries. They prepared the nitrogen-doped porous hollow carbon spheres by pyrolysis of a polydopamine (PDA) carbon precursor on the surface of silicon dioxide (SiO 2 ).
Green Car Congress
AUGUST 9, 2015
A team at Cornell University has used ice-templating to synthesize hierarchical porous carbons (HPCs) with extremely high surface areas of up to 2340 m 2 g −1 with total pore volume of up to 3.8 cm 3 g −1 as supports for sulfur for electrodes in Li–S batteries. Ritu Sahore, Luis P. Estevez, Anirudh Ramanujapuram, Francis J.
Green Car Congress
JUNE 1, 2015
Stanford University scientists have created a new ultrahigh surface area three-dimensional porous graphitic carbon material that significantly boosts the performance of energy-storage technologies. The maximum surface area achieved with conventional activated carbon is about 3,000 m 2 g –1. cm –3 ), and hierarchical pore architecture.
Green Car Congress
JUNE 21, 2015
Researchers at Tsinghua University (China) report in a paper in ChemSusChem on their use of both lithium anode passivation and polysulfide anion diffusion suppression strategies to reduce self-discharge of the lithium–sulfur cell. —Xu et al. and Zhang, Q. 201500428. -B. and Zhang, Q. 201500428.
Green Car Congress
FEBRUARY 10, 2015
A team from the China University of Geosciences has taken a novel approach to stabilizing Lithium-sulfur batteries by functionalizing the carbon-sulfur cathode with DNA. Rechargeable lithium/sulfur battery promises an appealing candidate for energy storage to power portable devices and electric vehicles.
Green Car Congress
MAY 31, 2015
Researchers in have shown that a lithium-sulfur (Li-S) battery with a reduced graphen oxide (rGO) -coated separator exhibits much smaller impedance and much better electrochemical performance than cells with an uncoated separator. After coating with rGO, the initial discharge capacity can be as large as 1067 mAh g −1 at 0.2
Green Car Congress
JUNE 21, 2015
Researchers at Zhejiang University (China) have developed a multi-functional binder with cation-conductive polymer and polysulfide absorbents that improves the discharge capacity and rate cycleability of Li-sulfur batteries. The Li–S battery showed very low capacity degradation rate of 0.08% per cycle at 1C rate. 2015.06.083.
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