They use a silicon anode, but grow layers of graphene on top to improve the density and longevity that would otherwise suffer. The upgrade might not be showing up in the gadgets for a while. This is still a research project and it could take years before Samsung translates its breakthrough into real-world products.

Besides mobile devices, this would extend far beyond phones to reach laptops, tablets and all the other gadgets

Samsung also plans to launch more handsets running on its own Tizen operating system later this year. Samsung will launch several Tizen smartphones at varying prices, the source said without disclosing other specifications.
Samsung aims to build its own ecosystem through Tizen, which powers its smartwatches and premium television sets. But the firm needs more handsets running on the system to expand its user base and attract third-party developers, analysts say.