You won't be able to use effects in CocoonJS -- it doesn't handle WebGL. You might get what you are looking for by using Ejecta for iOS or Crosswalk for Android.
As far as the low framerate goes, I recommend spending some time in the debugger. Things will run WAY faster in the native Safari or Chrome browser on a device then they will in a webview. In order to solve my framerate problems, I worked on my desktop and tried to see which Construct 2 groups were taking the most CPU time. I took one simulation from 1-2 FPS all the way to 60 FPS in CocoonJS and Ejecta on the iPad using this technique. It took a lot of debugging to find and fix the CPU-hogging functions, but it was worth it.