You need a professional or a very fine diamond sharpener if you want to sharpen a ceramic knife in particular.
How to sharpen ceramic knives at home video.
The bad news is that it s very difficult and or expensive to do so.
But although these knives do not require frequent sharpening due to a long period of operation or due to improper use sooner or later there is a problem how to sharpen a ceramic knife.
The good news is that ceramic knives don t need to be sharpened as often as steel knives.
If you like to use a sharpening rod make sure that it s made of diamond steel like the dmt d2sf 12 inch diamond steel sharpening rod.
I have the kyocerca advanced ceramic electric diamond knife sharpener at home and so far it has done a good job of sharpening both ceramic and steel knives.
How long a ceramic knife needs sharpening depends on usage.
Manual sharpening rods may be less convenient than electric knife sharpeners but some of them may be up to the task of sharpening a ceramic knife.