What error message you are getting with this command?
This should give you bunch of files as export of this list and you can use that to import on the destination site and restore/import the list.
Export-SPWeb -Identity <SiteURL> -Path <Path and File Name> [-ItemUrl <URL of Site, List, or Library>]
Another option is you can save the list as template , including content , and use that template to create new list on destination site.