Battery structures, self-organizing structures, and related methods
View Patent ↗An energy storage device includes a first electrode comprising a first material and a second electrode comprising a second material, at least a portion of the first and second materials forming an interpenetrating network when dispersed in an electrolyte, the electrolyte, the first material and the second material are selected so that the first and second materials exert a repelling force on each other when combined. An electrochemical device, includes a first electrode in electrical communication with a first current collector; a second electrode in electrical communication with a second current collector; and an ionically conductive medium in ionic contact with said first and second electrodes, wherein at least a portion of the first and second electrodes form an interpenetrating network and wherein at least one of the first and second electrodes comprises an electrode structure providing two or more pathways to its current collector.
1. A cell having a positive electrode and a negative electrode and an electrolyte in ionic communication with the positive and negative electrodes, wherein at least one of the positive and negative electrodes comprises an electrode in electrical communication with a current collector, the electrode comprising sintered particles of an electroactive material, wherein the electrode is substantially free of binder, has an open porosity and a pore volume fraction in the range of from about 10% to about 80%.
2. The cell of claim 1 , wherein the sintered particles of the positive electrode comprise a lithium intercalating material.
3. The cell of claim 2 , wherein the sintered particles of the negative electrode comprise a lithium intercalating material.
4. The cell of claim 1 , wherein the electrolyte has an ionic conductivity of less than 10 −4 S/cm.
5. The cell of claim 1 , wherein the electrolyte is at least one of poly(ethylene oxide), poly(propylene oxide), poly(styrene), poly(imide), poly(amine), poly(acrylonitrile), poly(vinylidene fluoride), methoxyethyoxyethoxy phosphazine, diiodomethane, 1,3-diiodopropane, N,N-dimethylformamide, dimethylpropylene urea, ethylene carbonate, diethylene carbonate, dimethyl carbonate, propylene carbonate, a block copolymer lithium electrolyte doped with a lithium salt, glass with at least one of LiI, LiF, LiCl, Li 2 O—B 2 O 3 —Bi 2 O 3 , Li 2 O—B 2 O 3 —P 2 O 5 and Li 2 O—B 2 O 3 —PbO a sol or gel of the oxides or hydroxides of Si, B, P, Ti, Zr, Pb, or Bi.
6. The cell of claim 1 , wherein sintered particles are one or more particles selected from the group consisting of LiCoO 2 , LiCoO 2 doped with Mg, LiNiO 2 , LiMn 2 O 4 , LiMnO 2 , LiMnO 2 doped with Al, Li(Fe,Mn)PO 4 , LiFePO 4 , LiFePO 4 doped with one or more of Mg, Al, Ti, Nb, Ta, Zr, or W, Li 2 Fe 2 (SO 4 ) 3 , V 2 O 5 , V 6 O 11 , C, amorphous carbon, graphite, mesocarbon microbeads, Li, LiAl, Li 9 Al 4 , Li 3 Al, Zn, LiZn, Ag, LiAg, Li 10 Ag 3 , B, Li 5 B 4 , Li 7 B 6 , Ge, Si, Li 12 Si 7 , Li 21 Si 8 , Li 13 Si 4 ,Li 21 Si 5 , Sn, Li 5 Sn 2 , Li 13 Sn 5 , Li 7 Sn 2 , Li 22 Sn 5 , Sb, Li 2 Sb, Li 3 Sb, Bi, LiBi, Li 3 Bi, SnO 2 , SnO, MnO, Mn 2 O 3 , MnO 2 , Mn 3 O 4 , CoO, NiO, FeO, LiFe 2 O 4 , TiO 2 , LiTi 2 O 4 , glass with a Sn—B—P—O compound and mesocarbon microbeads coated with at least one of poly(o-methoxyanaline), poly(3-octylthiophene), and poly(vinylidene fluoride).
7. The cell of claim 1 , further comprising a conductive additive.
8. The cell of claim 7 , wherein the conductive additive comprises carbon.