abstract |
The present invention relates to an electroless chromium plating composition capable of improving the corrosion resistance of iron, for example, the corrosion resistance of a cylindrical case of a lithium ion battery, and an electroless chrome plating method using the same, wherein a hexavalent chromium source 0.031M, 3 0.009M of chromium source, 0.0267M of sodium metasilicate, 0.035M of phosphoric acid, and 0.003-0.007M of lactic acid as a fixing agent. |