You must file a new I-751, since the Immigration Judge cannot review the denied one, since you have a different basis than the one USCIS denied. You seem also to be eligible for a self petition as an abused spouse of a US citizen, VAWA Cancellation, and possible other benefits.
The above is intended only as general information, and does not constitute legal advice. You must speak with an attorney to discuss your individual case.
You can file both on the basis of divorce and if a use. You will have to prove good faith marriage either way.
Answers provided by Ksenia Maiorova, Esq. on Avvo.com are of a general nature and do not constitute legal advice.