Swedish sodium-ion battery developer Altris and Finnish pulp and paper maker Stora Enso Oyj (<a href="https://www.nasdaqomxnordic.com/shares/microsite?Instrument=HEX24360" target="_blank">HEL:STERV</a>) have teamed up to adapt Stora Enso’s hard carbon material, called Lignode, as an anode material in Altris’ sodium-ion battery cells.