Organic active materials for batteries
A rechargeable battery includes a compound having at least two active sites, R 1 and R 2 ; wherein the at least two active sites are interconnected by one or more conjugated moieties; each active site is coordinated to one or more metal ions M a+ or each active site is configured to coordinate to one or more metal ions; and “a” is 1, 2, or 3.
1. A flow battery comprising an active material comprising a compound represented by any one or more of Formulas IA, IB, and ID:
wherein R 1 and R 2 are individually C(O)OM, or C(O)OR 3 ; each R 3 is individually H or C 1 -C 6 alkyl; each R 4 is H; and M is Na, K, or Mg.
2. The flow battery of claim 1 , wherein each R 3 is H.
3. The flow battery of claim 1 , wherein each R 3 is C 1 -C 6 alkyl.
4. The flow battery of claim 1 , wherein the compound is represented by one or more of:
5. A redox flow battery comprising monosodium terephthalate (HNaBDC), monopotassium terephthalate (HKBDC), dipotassium terephthalate (K 2 BDC), monosodium monolithium terephthalate (NaLiBDC), monosodium monopotassium terephthalate (NaKBDC), or monolithium monopotassium terephthalate (LiKBDC).
6. The redox flow battery of claim 5 comprising monosodium terephthalate (HNaBDC), monopotassium terephthalate (HKBDC), dipotassium terephthalate (K 2 BDC), or monosodium monopotassium terephthalate (NaKBDC).