Toyota Motor Engineering & Manufacturing North America, Inc.

Toyota Jidosha Kabushiki Kaisha

Deakin University

Timothy Sean Arthur

Nikhilendra Singh

Fuminori Mizuno

Rana Mohtadi

Oscar Tutusaus

Ruigang Zhang

Kensuke Takechi

Ryuta Sugiura

Shingo Ota

Chen Ling

John Muldoon

Masaki Matsui

Patrick Craig Howlett

Maria Forsyth

Robert Kerr

Ruidong Yang

Patrick J Bonnick

Tyler J Carter

Claudiu Bogdan Bucur

Koji Suto

Wei Song

Erika Nagai

Tomoya Matsunaga

Jason Germain

Keiko Kato

An anode composite (AC) for use in an anode for solid-state lithium batteries includes particles of a silicon active material, a carbon additive for electrical conductivity, and a solid electrolyte that combines solid elastic electrolyte (SEE) with a solid non-elastic electrolyte. The solid non-elastic electrolyte is a lithium thiophosphate or other ceramic lithium ion conductor and the SEE includes an ammonium or phosphonium ion closo-borate doped with a lithium salt. The SEE is diffused onto the combined particles uniformly by heating, where pressing achieves about 100% relative density at modest pressures. The anode displays high stability upon charge-discharge cycles of a solid-state lithium battery prepared with the AC layer, appearing to maintain stable intrinsic and extrinsic interfaces.

Ceramic-soft composites for solid-state silicon anodes

A lithium metal electrode having an artificial interphase layer is provided. The artificial interphase layer conducts lithium ions but is nonconductive of electrons. A method to prepare the lithium metal electrode is also provided. A solid state electrochemical cell containing the lithium metal electrode is provided. A solid state lithium-sulfur electrochemical cell is provided which has a sustained discharge capacity of about 3 mAh/cm.

Interphase between lithium metal and solid electrolyte

An inorganic compound for a Li-ion conductor includes an oxyhalide compound with a chemical composition of MOX where M is at least one of Al, Sc, La, and Y, and X is at least one of F, Cl, Br, and I. Also, the oxyhalide compound has a thermal decomposition start temperature of the oxyhalide compound is greater than a thermal decomposition start temperature of FeOCl and a conductivity that is general equal to or greater than a conductivity of the FeOCl.

Inorganic compounds for lithium-ion conductors

3-D magnesium voltaic cells have a magnesium anode coated on multiple opposing surfaces with a continuous protective/electrolyte layer that is ionically conductive and electronically insulating. The resulting protected 3-D magnesium anode is coated on multiple opposing surfaces with a continuous cathode layer that is electronically and ionically conductive, and includes a magnesium storage medium. Suitable magnesium anodes, in particular, magnesium foam anodes, can be made by pulsed galvanostatic deposition of magnesium on a copper substrate. The protective layer can be formed by electropolymerization of a suitable methylacrylate ester. The continuous cathode layer can be a slurry cathode having powders of an electronic conductor and a reversible magnesium storage component suspended in a magnesium electrolyte solution.

3D magnesium battery and method of making the same

A method of synthesizing an inorganic precursor for an ionic conductor includes mixing at least one oxide of M with at least one halide of M, heating the mixture of the at least one oxide of M and the at least one halide of M and forming an MOX inorganic oxyhalide compound, and injecting defects in the MOX inorganic oxyhalide compound and forming a defect doped (MOX)' precursor for an ionic conductor. The element or component M is selected from at least one of Fe, Al, La, and Y, the at least one halide of M is selected from at least one of a fluoride of M, a chloride of M, a bromide of M, and an iodide of M, and the element or component X is at least one of F, Cl, Br, and I.

Inorganic precursors for ionic conductors

A solid-state electrolyte for a lithium battery that includes a hard-inorganic electrolyte and at least two soft electrolytes (SEs), where the melting point of the solid-state electrolyte is less than the melting point of a highest melting SE included in the solid-state electrolyte. The SEs include ammonium or phosphonium salts of closo-borates and can include lithium closo-borates salts. The hard-inorganic electrolyte is a lithium thiophosphate (LPS), where the plurality of SEs is melt-diffused throughout the homogeneous combined hard-inorganic electrolyte and a plurality of SEs at a temperature below the highest melting point SE, generally below 100&#xb0; C. The relative density of the solid-state electrolyte is greater than 90 percent.

Uniform organic-ceramic composites including a hard-inorganic lithium ion electrolyte and a plurality of soft electrolytes, solid-state batteries including the same, and methods of preparing the same

A lithium-ion conducting composite material includes a Li binary salt, a Li-ion conductor with a chemical composition of LiFeO(OH)Cl, and at least two of: a first inorganic compound with a chemical composition of (FeM1)O(OH)Cl; a second inorganic compound with a chemical composition of M2OX; and a defected doped inorganic compound with a chemical composition of (M3OX)'. The value of n is 1 or 2, x is greater than 0 and less than or equal to 0.25, and y is greater than or equal to 0 and less than or equal to 0.25. Also, M1 is at least one of Mg and Ca, M2 and M3 are each at least one of Fe, Al, Sc, La, and Y, and X is at least one of F, Cl, Br, and I.

Lithium-ion conducting composite material

An ionic conductor includes an inorganic oxychloride compound with a chemical composition of (FeM)O(OH)Clwhere M is selected from at least one of Mg and Ca, and x is greater than 0 and less than or equal to 0.25, y is greater than or equal to 0 and less than or equal to 0.25. The inorganic oxychloride compound has a thermal decomposition start temperature of about 410&#xb0; C. and x-ray diffraction peaks (2&#x3b8;) between about 20.79&#xb0; and about 22.79&#xb0;, between about 30.03&#xb0; and about 32.03&#xb0;, between about 39.47&#xb0; and about 41.47&#xb0;, and between about 76.44&#xb0; and about 78.44&#xb0;.

Inorganic oxychloride ionic conductors

An insertion anode for a Li-ion cell, protected with an SEI by pre-treatment in an SEI-formation cell, is stable for cell cycling even in the presence of substantial water in the cell electrolyte. A method for making the protected anode includes forming an SEI on a lithium-ion insertion electrode by performing multiple charge/discharge cycles on the electrode in a first cell having an SEI formation electrolyte to produce the protected anode. The SEI formation electrolyte includes an ionic liquid having at least one of twelve organic cations.

Artificial SEI transplantation for insertion anodes

The present disclosure relates to a composite material of formula (I): (LPS)(OIPC)wherein each of a and b is a mass % value from 1% to 99% such that a+b is 100%; (LPS) is a material selected from the group consisting of LiPS, LiPS, LiGePS, and a material of formula (II): xLiS.yPS.(100&#x2212;x&#x2212;y)LiX; wherein X is I, Cl or Br, each of x and y is a mass % value of from 33.3% to 50% such that x+y is from 75% to 100% and the total mass % of LiS, PSand LiX is 100%; and (OIPC) is a salt of a cation and a closo-borane cluster anion.

Ceramic soft composites for solid-state batteries

An anode for a lithium or lithium-ion cell, protected with an SEI by pre-treatment in an SEI-formation cell, is stable for cell cycling even in the presence of substantial water in the cell electrolyte. A method for making the protected anode includes forming an SEI on a lithium or lithium-ion electrode by performing multiple charge/discharge cycles on the electrode in a first cell having an SEI formation electrolyte to produce the protected anode. The SEI formation electrolyte includes an ionic liquid having at least one of eight organic cations.

Ionic liquids for artificial SEI transplantation

Methods for forming polymeric protective layers on magnesium anodes for magnesium batteries include placing a solution of electropolymerizable monomers onto all exposed surfaces of a magnesium anode, and electropolymerizing the monomers in the solution. The monomers can be glycidyl methacrylate, a salt of 3-sulfopropyl methacrylate, or a mixture of the two. Protected magnesium foam anodes for 3-D magnesium batteries have a magnesium foam electrolyte, and a polymeric coating covering all exposed surfaces of the magnesium foam electrolyte. The polymeric protective coating formed of (poly)glycidyl methacrylate, poly(3-sulfopropyl methacrylate), or a copolymer of the two.

Electro-polymerized protective layer for 3D magnesium battery

A composite material of formula (I) is provided:(LPS)(MPS)&#x2003;&#x2003;(I)wherein each of a and b is a mass % value from 1% to 99% such that a+b is 100%; (LPS) is a material selected from the group consisting of LiPS, LiPS, LiGePS, and a material of formula (II):LiS.PS.(100&#x2212;)LiX&#x2003;&#x2003;(II)wherein X is I, Cl or Br, each of x and y is a mass % value of from 33.3% to 50% such that x+y is from 75% to 100% and the total mass % of LiS, PSand LiX is 100%; and (MPS) is a material of formula (III):LiS.MS.PS.(100&#x2212;)LiX&#x2003;&#x2003;(III)wherein MS is a transition metal sulfide or a semi metal sulfide, X is I, Cl or Br, each of m, n and o is a mass % value greater than 0 such that (m+n+o) is from 75% to 100% and the total mass % of LiS, PSand LiX is 100%. Solid state batteries containing the composite material are also provided.

Metal-phosphorous sulfide additives for solid state batteries

A lithium sulfide (LiS)-lithium phosphorus sulfide (LiPS) composite, electrochemical cells comprising the same, and methods for making the same are described herein. By the mechanochemical method described herein, the LiS&#x2014;LiPScomposite can be formed and used as the active material in a positive electrode for a variety of electrochemical cells. It is shown herein that the composite is an electrochemically active cathode material. Further, it has been shown that the LiS&#x2014;LiPScomposite shows increased resistance to decomposition and HS generation than LiS.

Growing community of inventors

Ann Arbor, MI, United States of America

Timothy Sean Arthur