Arizona State University

Southwest Research Institute

Leland Stanford Junior University

University of California

Candace K Chan

Jon Mark Weller

Kwai S Chan

Yi Cui

Michael A Miller

Wuwei Liang

Bin Liu

Peidong Yang

Dong-Kyun Seo

Hailin Peng

Riccardo Ruffo

Jianwei Sun

Li-Feng Cui

Daniel Mieritz

Ran Zhao

Ting Yang

Qian Cheng

Ying Li

Fabricating a layer including lithium lanthanum zirconate (LiLaZrO) layer includes forming a slurry including lanthanum zirconate (LaZrO) nanocrystals, a lithium precursor, and a lanthanum precursor in stoichiometric amounts to yield a dispersion including lithium, lanthanum, and zirconium. In some cases, the dispersion includes lithium, lanthanum, and zirconium in a molar ratio of 7:3:2. In certain cases, the slurry includes excess lithium. The slurry is dispensed onto a substrate and dried. The dried slurry is calcined to yield the layer including lithium lanthanum zirconate.

Synthesis of lithium lanthanum zirconate from nanocrystalline lanthanum zirconate

Synthesizing lithium lanthanum zirconate includes combining a reagent composition with a salt composition to yield a molten salt reaction medium, wherein the reagent composition comprises a lithium component, a lanthanum component, and zirconium component having a lithium:lanthanum:zirconium molar ratio of about 7:3:2; heating the molten salt reaction medium to yield a reaction product; and washing the reaction product to yield a crystalline powder comprising lithium lanthanum zirconate.

Synthesis of nanosized cubic lithium lanthanum zirconate fast ion conductor

Forming a lithium lanthanum zirconate thin film includes disposing zirconium oxide on a substrate to yield a zirconium oxide coating, contacting the zirconium oxide coating with a solution including a lithium salt and a lanthanum salt, heating the substrate to yield a dried salt coating on the zirconium oxide coating, melting the dried salt coating to yield a molten salt mixture, reacting the molten salt mixture with the zirconium oxide coating to yield lithium lanthanum zirconate, and cooling the lithium lanthanum zirconate to yield a lithium lanthanum zirconate coating on the substrate. In some cases, the zirconium oxide coating is contacted with an aqueous molten salt mixture including a lithium salt and a lanthanum salt, the molten salt mixture is reacted with the zirconium oxide coating to yield lithium lanthanum zirconate, and the lithium lanthanum zirconate is cooled to yield a lithium lanthanum zirconate coating on the substrate.

Lithium lanthanum zirconate thin films

Nanosized cubic lithium lanthanum zirconate is synthesized by forming a solution including an organic compound and compounds of lithium, lanthanum, and zirconium; drying the solution to yield a solid; and heating the solid in the presence of oxygen to pyrolyze the organic compound to yield a product comprising nanosized cubic lithium lanthanum zirconate.

Preparation of nanosized cubic lithium lanthanum zirconate fast ion conductor via facile polymer-chelate combustion route

Exfoliating transition metal oxide lithium intercalation particles having lithium ions intercalated between transition metal oxide nanosheets includes electrochemically oxidizing a transition metal in first transition metal oxide lithium intercalation particles from a first oxidation state to a second oxidation state, inserting first cations having a radius exceeding the radius of a lithium ion into the vacancies, reducing the transition metal from the second oxidation state to the first oxidation state, and exfoliating the transition metal oxide nanosheets from the second transition metal oxide lithium intercalation particles to yield dispersed transition metal oxide nanosheets comprising the transition metal in the first oxidation state and oxygen. The dispersed transition metal oxide nanosheets can be reassembled to yield a material suitable for a lithium-ion battery cathode. Metal oxide sodium intercalation particles can be similarly exfoliated and reassembled to yield a material suitable for a sodium-ion battery cathode.

Oxidation-reduction assisted exfoliation and reassembly of transition metal oxide lithium intercalation compounds

Forming a metal oxide by treating an acidic solution containing a metal to yield a precursor in the form of a semi-liquid, semi-solid or solid, and treating the precursor to yield a product including the metal oxide. An organic or inorganic component may be combined with the precursor to yield a second semi-liquid, semi-solid or solid. The product may be treated to yield a new material. In some cases, the metal oxide has an empirical formula HMA-A, where M represents a transition metal or any combination of transition metals in Groups 3-12; Ais a first oxyanion; Ais a second oxyanion; 0&#x2264;x&#x2264;3; 0&#x2264;y&#x2264;3; 0&#x2264;z&#x2264;3; and y+z&#x3e;0.

Metal oxides from acidic solutions

An anode for a rechargeable battery includes a Type II clathrate having the formula MX, where a cage structure is formed by X, M represents one or more guest ions, and 0&#x3c;x&#x3c;24. When x=0, no guest ion is present in the cage structure. X may be Si, Ge, Sn, or a combination thereof. M may be an ion of Na, K, Rb, Cs, Ba, Sr, Ca, Cl, Br, I, Eu, P, Te, Li, Mg, or a combination thereof. A rechargeable battery including the anode (e.g., as an anode) includes a cathode and an electrolyte in contact with the anode and the cathode. Forming the anode may include preparing a composition including the Type II clathrate contacting the composition with a current collector to form the anode. Guest ions may be electrochemically inserted and removed from the cage structure during operation of the rechargeable battery.

Type II clathrates for rechargeable battery anodes

A solid electrolyte for a lithium-ion battery including a film having a multiplicity of nanowires, each nanowire including a lithium-ion conductive material, and a lithium-ion battery including the solid electrolyte. The multiplicity of nanowires may be formed in an electrospinning process. The lithium-ion battery may be formed by compressing the solid electrolyte between an anode layer and a cathode layer.

Nanowire-based solid electrolytes and lithium-ion batteries including the same

A transition metal hydroxy-anion electrode material for lithium-ion battery cathodes includes the charge-neutral structure M(OH)(XO4), where M is one or more transition metals, x is the total number of transition metal atoms, X is sulfur or phosphorus, and x, n, and m are integers. (OH)(XO)is a hydroxysulfate or hydroxyphosphate, and M can be one or more (e.g., a solid solution of) transition metals selected from the group consisting of copper, iron, manganese, nickel, vanadium, cobalt, zinc, chromium, and molybdenum. A lithium-ion battery may have a cathode including M(OH)(XO)as a cathode material, and an electronic device may include a lithium-ion battery having a cathode including M(OH)(XO)as a cathode material.

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San Antonio, TX, United States of America

Candace K Chan