Battery membranes and components thereof
Provided herein is a battery cell. The battery cell can include a cation-selective ion-exchange membrane. The cation-selective ion-exchange membrane can allow lithium ions to pass through the membrane. The cation-selective ion-exchange membrane can impede manganese ions from passing through the membrane.
1 . A method, comprising:
disposing a cation-selective ion-exchange membrane in a battery cell comprising an electrolyte, a cathode comprising lithium and manganese, and an anode, wherein the membrane is disposed between the cathode and the anode, and the membrane is in contact with the electrolyte; and
applying a voltage pulse, the voltage pulse configured to reduce a concentration of manganese ions in the electrolyte,
wherein the membrane is configured to allow lithium ions to pass through the membrane and impede manganese ions from passing through the membrane.
2 . The method of claim 1 , wherein the voltage pulse is configured to generate a reaction that decomposes one or more components of the electrolyte to form HF in the electrolyte.
3 . The method of claim 2 , wherein the HF formed in the electrolyte reacts with dissolved manganese ions present in the electrolyte to form a cathode solid electrolyte interphase (CEI).
4 . The method of claim 1 , wherein disposing the membrane in the battery cell comprises disposing the membrane on a separator film in the battery cell.
5 . The method of claim 1 , wherein the membrane comprises one or more materials selected from polyaniline (PANi), ethylenediamine polymerized with 1,3,5-benzenetricarbonyl trichloride, polypyrrole (Ppy) coated sulfonated interpolymer of polyethylene (PE), styrene-divinylbenzene copolymer, polyvinylidene fluoride (PVDF), sulfonated polyvinylidene fluoride (S-PVDF), polydiacetylene (PDA), polyethylene diamine (PEDI), MIL-53(Al), charged nanofibers, PANi coated with p-toluenesulfonic acid (p-TSA), doped PANi with S30-valine, electrospun carbon nanofibers, and combinations of any two or more thereof.
6 . The method of claim 1 , wherein the membrane comprises one or more pores, each of the one or more pores independently having a pore size in a range of 1 nm to 5 μm.
7 . The method of claim 1 , wherein the membrane comprises one or more pores, each of the one or more pores independently having a pore size in a range of 1 nm to 150 nm.
8 . The method of claim 1 , wherein the membrane has a porosity in a range of 5% to 90%.
9 . The method of claim 1 , wherein the membrane has a porosity in a range of 40% to 60%.
10 . The method of claim 1 , wherein a ratio of a transport rate of lithium ions through the membrane to a transport rate of manganese ions through the membrane is in a range of 30:1 to 2:1.
11 . The method of claim 1 , wherein a ratio of a transport rate of lithium ions through the membrane to a transport rate of manganese ions through the membrane is greater than 15:1.