Posts Tagged: Lithium Sulfur

Graphene wrapper enhances performance of lithium-sulfur batteries

Lithium-sulfur batteries are of great interest, as they could offer specific energy densities far greater than those of current lithium-ion chemistries. However, current designs are plagued by low efficiency and capacity degradation. A team of researchers from the University of Cambridge and the Beijing Institute of Technology has devised a three-dimensional sandwich-type graphene sheet-sulfur/carbon composite… Read more »

OXIS Energy achieves specific energy of 300 Wh/kg with lithium-sulfur cell

OXIS has developed its largest lithium-sulfur cell to date, achieving specific energy in excess of 300 Wh/kg. The company has also increased cell capacity to 25 Ah, a twelve-fold improvement in 18 months. OXIS predicts that it will achieve a cell capacity of 33 Ah by mid-2015. The OXIS scientific team expects to achieve its… Read more »

Fraunhofer Institute presents November workshop on lithium-sulfur batteries

The Fraunhofer Institute will hold its third annual workshop on lithium-sulfur batteries in Dresden, Germany, on November 12 and 13. Lithium-sulfur is a leading contender for the battery chemistry of the future, and Fraunhofer believes that novel materials such as nanostructured carbon/sulfur composite cathodes, solid electrolytes and alloy-based anodes will significantly enhance performance. Dr Oliver… Read more »

GM researchers develop improved Li-Sulfur cathode material

A GM R&D team has developed a way to improve the cycling stability and Coulombic efficiency of lithium-sulfur (Li/S) batteries. The new paper, Polydopamine-Coated, Nitrogen-Doped, Hollow Carbon-Sulfur Double-Layered Core-Shell Structure for Improving Lithium-Sulfur Batteries, appears in the ACS journal Nano Letters. Lithium-sulfur chemistry theoretically promises impressive energy capacity, but practical Li-S batteries have been hindered… Read more »

OXIS and Multi Source Power work together to develop marine lithium-sulfur batteries

UK-based battery maker OXIS and Multi Source Power (MSP), a manufacturer of hybrid and electric marine drivetrains, have formed a partnership to develop lithium-sulfur batteries for marine applications. The new product will be part of the Ghost Power Brand, and is scheduled for launch in the spring of 2015. It will be a versatile battery… Read more »

New anode extends the life of lithium-sulfur batteries

Many researchers are interested in lithium-sulfur batteries, because they can offer up to four times the energy density of lithium-ion chemistries. However, current lithium-sulfur batteries have a much shorter lifespan. In a paper published this week in Nature Communications, a team from the Department of Energy’s Pacific Northwest National Laboratory (PNNL) described a “hybrid” anode… Read more »

Researchers demonstrate major advance in lithium-sulfur battery chemistry

Researchers at the Lawrence Berkeley National Laboratory have demonstrated a lithium-sulfur (Li/S) battery that has more than twice the specific energy of current lithium-ion batteries, and that lasts for more than 1,500 charge/discharge cycles with minimal capacity loss. This is the longest cycle life yet reported for any lithium-sulfur battery. The results were reported in the… Read more »

NOHMs Technologies establishes Li-S battery manufacturing facility in Kentucky

NOHMs Technologies, a lithium-sulfur battery spin-off from Cornell University, will locate a new research, manufacturing and product development facility in Lexington, Kentucky. The company will use the Kentucky-Argonne Battery Manufacturing Research and Development Center, a partnership of the Argonne National Laboratory, the state and the Universities of Kentucky and Louisville. Ford, Hitachi and Toyota are some… Read more »

OXIS Energy bets on lithium-sulfur

Though it may have a stinky reputation, sulfur could set EVs on the path to total ICE replacement if energy-dense, low-weight lithium-sulfur batteries become the norm. British-based OXIS Energy is banking its business on it. If American clean energy industries are to take full advantage of the emerging lithium-sulfur (Li-S) battery chemistry, they just may… Read more »

New report: Solid-state batteries will rule by 2030, driven by consumer electronics

A report from technology advisory firm Lux Research predicts that new battery technologies will become strong competitors with existing lithium-ion technology by 2020, and that solid-state batteries will surpass Li-ion by 2030. However, consumer electronics, not electric vehicles, will be the market driving the advances. “While much of the motivation for next-generation batteries – whether… Read more »