{"id":9447,"date":"2014-11-13T11:01:46","date_gmt":"2014-11-13T18:01:46","guid":{"rendered":"http:\/\/cafe.foundation\/blog\/?p=9447"},"modified":"2014-11-13T11:01:46","modified_gmt":"2014-11-13T18:01:46","slug":"400-watt-hours-per-kilogram-2014","status":"publish","type":"post","link":"http:\/\/cafe.foundation\/blog\/400-watt-hours-per-kilogram-2014\/","title":{"rendered":"400 Watt-Hours per Kilogram by 2014"},"content":{"rendered":"

On its web site, the company boasts<\/a>, \u201cOXIS Energy is leading the World with its latest cell Energy Density and Capacity,\u201d and proceeds to announce that it\u2019s \u201cdeveloped its largest Lithium Sulfur cell achieving in excess of 300 [Watt-hours per kilogram]. This outperforms Lithium ion technology that has dominated the performance battery market for many years. In addition OXIS has achieved an increase in cell capacity to a 25 Amp-hour (Ah) cell \u2013 a world first.\u201d \u00a0They’re working toward a 33Ah cell.<\/span><\/p>\n

Claiming a twelve-fold improvement in the last 18 months, OXIS, a British battery manufacturer, says it has the confidence to \u201cachieve a cell capacity of 33Ah by mid 2015.\u201d\u00a0 The firm has hopes of energy densities \u201cin excess of 400Wh\/kg by the end of 2016 and in excess of 500Wh\/kg by the end of 2018.\u201d This doubling of energy density over the best of available lithium-ion batteries now would make the 175-mile-range Nissan Leaf a reality, and bring an end to most instances of \u201crange anxiety.\u201d\u00a0 These would be admirable achievements for the nine-year-old company, which has 19 families of patents, with 60 patents granted and 55 pending.<\/p>\n

Capable of almost 100-percent discharge with no ill effects, the batteries make allowances for ham-handed owners. \u00a0Perhaps more important, OXIS offers a battery not prone to sudden meltdowns.\u00a0 Thermal runaways in lithium-ion cells is always a possibility, but OXIS is able to demonstrate freedom from that fear, first with a nail puncture test and second with a bullet test (in case you\u2019re flying your electric airplane in a war zone \u2013 some of OXIS\u2019s work is with defense companies).<\/p>\n