Polearms which cannot be used with a shield are marked as "Polearm(No Shield)" in-game any of the others are fair game. Unfortunately they are not noted as such on the site.
In general just about all spears/lances can be used 1/2H. Exceptions are, IIRC, all Pikes, and the Long Spear. Everything else that is 1/2H is the exception, i.e. staves, I think some Scythes.
Generally speaking though many of the polearms are not in fact very good while used 1H, and if you are going to use one, make sure it is primarily a thrust/pierce such as a spear. *E: since you can only deliver a weakened thrust while using it 1H, you lose side-swings and overhead.