How can I ask for divorce and still get my مؤخّر صداق

My husband is emotionally abusive and he keeps saying if you want a divorce just ask, but I don’t work and need my مؤخر صداق so I settle my 4 kids until I am able to find work, his abuse is mental and psychological and if I try to make up with him he insists on abusing me in an intimate way that is haram in Islam, I used to let him hoping for things to get better but they never do