Abstract: Electrochemical systems for mitigating or reducing the release of undesirable by-products of electrochemical cells are provided. These systems may be particularly relevant to the sequestering of hydrogen sulfide gas in solid state electrochemical cells with sulfide-based electrolytes. Some of the systems include an integrated hydrogen sulfide eliminating layer or microspheres containing a hydrogen sulfide eliminating material adjacent to one or more electrochemical cells and within a containment structure.

Abstract: A solid polymer electrolyte having a reinforcing substrate, a polymer having ethylene oxide portions and hydrocarbon portions with pendent functional groups having high relative permittivity for an electrochemical cell is provided. The solid polymer electrolyte may provide good ionic conductivity at room temperature and good mechanical strength.

Abstract: A battery electrode material includes a composition of (A) a charge-conducting radical polymer, (B) poly[poly(ethylene oxide) methyl ether methacrylate] (PPEGMA); and (A) a lithium salt, the composition being a mixed ionic and electronic conductor with ionic conductivity at room temperature of at least about 10?4 S/cm and electronic conductivity of at least about 10?3 S/cm.

Abstract: A solid-state battery includes an anode, a cathode, and a solid electrolyte between the anode and cathode. The anode or cathode includes bonded active material particles having thereon a mixed ionic and electronic conducting conformal interface layer that provides a transport path for ions and electrons during operation of the solid-state battery, and lacks solid electrolyte particles.

Abstract: According to one or more embodiments, a lithium-ion battery includes an anode including titanium niobium oxide (TNO) particles and solid electrolyte particles configured to form an interphase layer therebetween, a cathode including an active material, electronic conductor, and a non-solid electrolyte; and an ionically conductive and liquid-impermeable solid electrolyte separator. The solid electrolyte separator is in direct contact with and between the anode and cathode, and is configured to prevent reduction of the non-solid electrolyte by isolating the non-solid electrolyte from the TNO particles.

Abstract: A solid-state battery includes an anode, a cathode, and a solid electrolyte between the anode and cathode. The anode or cathode includes bonded active material particles having thereon a mixed ionic and electronic conducting conformal interface layer that provides a transport path for ions and electrons during operation of the solid-state battery, and lacks solid electrolyte particles.

Abstract: A solid-state battery comprises an anode in electrical contact with an anode current collector, including a first ionically conductive solid electrolyte material having a susceptibility to reduction in a presence of lithium metal such that, upon contact with lithium, the ionically conductive material partially reduces to a mixed ionic and electronic conductor including a partially reduced species, a cathode, and a separator positioned between and in ionic contact with the anode and cathode. The separator is formed of a second ionically conductive solid electrolyte material which is in contact with the first ionically conductive material but not susceptible to reduction in a presence of lithium metal and not soluble for the partially reduced species such that the separator has a susceptibility for migration of lithium ions from the mixed ionic and electronic conductor and impedes propagation or exchange of the partially reduced species from the mixed ionic and electronic conductor.

Abstract: A solid-state battery includes a positive electrode, a negative electrode, and a separator between the positive and negative electrodes. The negative electrode includes reduced lithium titanate (LTO) particles and solid electrolyte particles. The negative electrode lacks electronically conductive additives.

Abstract: A Li-ion battery includes a cathode; an anode having a primary active material, conductive carbon, binder, and reserve material; and a separator between the cathode and anode. The reserve material has a reaction potential between a lithium reaction potential and a primary active material reaction potential. The reserve material is configured to intercalate with lithium at the reaction potential responsive to the primary active material being fully intercalated to inhibit lithium plating on the anode.

Abstract: According to one or more embodiments, a lithium-ion battery includes an anode including lithium titanate (LTO) particles and solid electrolyte particles configured to form an interphase layer therebetween, a cathode including an active material, electronic conductor, and a non-solid electrolyte; and an ionically conductive and liquid-impermeable solid electrolyte separator. The solid electrolyte separator is in direct contact with and between the anode and cathode, and is configured to prevent reduction of the non-solid electrolyte by isolating the non-solid electrolyte from the LTO particles.

Abstract: According to one or more embodiments, a lithium-ion battery includes an anode including titanium niobium oxide (TNO) particles and solid electrolyte particles configured to form an interphase layer therebetween, a cathode including an active material, electronic conductor, and a non-solid electrolyte; and an ionically conductive and liquid-impermeable solid electrolyte separator. The solid electrolyte separator is in direct contact with and between the anode and cathode, and is configured to prevent reduction of the non-solid electrolyte by isolating the non-solid electrolyte from the TNO particles.

Abstract: According to an embodiment, a lithium-ion battery includes a cathode, an anode, a separator between the cathode and anode, a current collector on the anode, and a layer of electronically conducting material between the anode and current collector. The layer of electronically conducting material is configured to, responsive to a potential of the battery crossing a phase-transition potential of the electronically conducting material, phase-transition from a conductor to an insulator to prevent dissolution of metal ions from the current collector into the anode.

Abstract: A solid-state battery comprises an anode in electrical contact with an anode current collector, including a first ionically conductive solid electrolyte material having a susceptibility to reduction in a presence of lithium metal such that, upon contact with lithium, the ionically conductive material partially reduces to a mixed ionic and electronic conductor including a partially reduced species, a cathode, and a separator positioned between and in ionic contact with the anode and cathode. The separator is formed of a second ionically conductive solid electrolyte material which is in contact with the first ionically conductive material but not susceptible to reduction in a presence of lithium metal and not soluble for the partially reduced species such that the separator has a susceptibility for migration of lithium ions from the mixed ionic and electronic conductor and impedes propagation or exchange of the partially reduced species from the mixed ionic and electronic conductor.

Abstract: A pre-sintered all-solid-state battery comprises a powdered lithium titanate (LTO), a powdered lithium lanthanum titanium oxide (LLTO), and a solid lithium compound configured to suppress formation of inactive phases during sintering. The solid lithium compound is about 0.5% to 10% by weight of the pre-sintered all-solid-state battery.

Abstract: A solid-state battery includes an anode, a cathode, and a solid electrolyte between the anode and cathode. The anode or cathode includes bonded active material particles having thereon a mixed ionic and electronic conducting conformal interface layer that provides a transport path for ions and electrons during operation of the solid-state battery, and lacks solid electrolyte particles.

Abstract: A method of making a solid state battery may include heating a flux sandwiched between a solid ceramic electrolyte and a group one metal. The flux may be heated such that it roughens a surface of the solid ceramic electrolyte and the group one metal melts and adheres to the surface of the solid ceramic electrolyte.

Abstract: According to an embodiment, a lithium-ion battery includes a cathode, an anode, a separator between the cathode and anode, a current collector on the anode, and a layer of electronically conducting material between the anode and current collector. The layer of electronically conducting material is configured to, responsive to a potential of the battery crossing a phase-transition potential of the electronically conducting material, phase-transition from a conductor to an insulator to prevent dissolution of metal ions from the current collector into the anode.

Abstract: According to one or more embodiments, a lithium-ion battery includes an anode including lithium titanate (LTO) particles and solid electrolyte particles configured to form an interphase layer therebetween, a cathode including an active material, electronic conductor, and a non-solid electrolyte; and an ionically conductive and liquid-impermeable solid electrolyte separator. The solid electrolyte separator is in direct contact with and between the anode and cathode, and is configured to prevent reduction of the non-solid electrolyte by isolating the non-solid electrolyte from the LTO particles.

Abstract: A pre-sintered all-solid-state battery comprises a powdered lithium titanate (LTO), a powdered lithium lanthanum titanium oxide (LLTO), and a solid lithium compound configured to suppress formation of inactive phases during sintering. The solid lithium compound is about 0.5% to 10% by weight of the pre-sintered all-solid-state battery.

Abstract: A method of forming a solid state battery is disclosed. In a moisture-free inert atmosphere, the method includes combining unreacted solid electrolyte precursors to form a green sheet, stacking the green sheet in between porous electrodes to form a solid state battery, and heating the battery to a melting point temperature of the precursors such that the precursors form a liquid phase penetrating pores in the electrodes to form ion conducting channels in the battery.