Nankai University

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Chinese researchers achieve 700 Wh/kg lithium battery using fluorinated hydrocarbon electrolyte

As of May 2026: Primary research institution behind the breakthrough

The lithium-ion cells in most electric vehicles store about 250 to 300 watt-hours per kilogram. A team from Nankai University and the Shanghai Academy of Spaceflight Technology — which builds Long March rockets and spacecraft power systems — has published results in Nature. The new fluorinated hydrocarbon electrolyte pushes lithium metal batteries to 700 Wh/kg at room temperature and nearly 400 Wh/kg at minus 50 degrees Celsius.

Updated May 30