Uchicago Argonne, LLC

Northwestern University

Shionogi Company Limited

Nagoya University

Jun Lu

Khalil Amine

Larry A Curtiss

Yang-Kook Sun

Tongchao Liu

Kah Chun Lau

Xiangyi Luo

Xuanxuan Bi

Zhengcheng Zhang

Xiaoqiao Zeng

Peng Du

Rui Xu

Yuanyuan Guo

Jeffrey W Elam

Osamu Yoshida

Tsutomu Iwaki

Kenji Morimoto

Huiming Wu

Xiaoping Wang

Christopher Mark Wolverton

Deborah J Myers

Stefan Vajda

Yutaka Yoshida

Yoshinori Yamano

Xiulei Ji

Yun Jung Lee

Hirokazu Arimoto

Zhenpeng Yao

Issei Kato

Tatsuro Yasukata

Jianguo Wen

Matthew Li

Eric C Tyo

Yu Lei

Kayo Yasoshima

Chun Zhan

A cathode material comprising: a cathode active material of formula LiNiMnCoOor NaNiMnCoOand having a partial or whole particle concentration gradient, wherein at least two or three elements concentration gradually change in the part or whole particle from the center part to the surface part of the particle (i.e. along a vector radius); 0.5<x≤1, 0≤y≤0.33, 0≤z≤0.33.

Cathode materials for secondary batteries

An electrochemical device includes a cathode comprising a first cathode component of lithium and SeS; and a second cathode component of an alkali metal and/or alkaline earth metal sulfur and/or selenide, different from the first cathode component; an initial discharge product of a polyselenide and/or polysulfide anion charge compensated by an alkali metal and/or alkaline earth metal cation; an anode; a porous separator; and a non-aqueous electrolyte with one or more lithium salts, and one or more solvents; wherein the electrochemical device is a lithium sulfur and/or lithium selenide battery.

Rechargeable lithium sulfur and/or selenium battery

A cathode active material of formula LiNiMnAlMOBor NaNiMnAlM'OB, wherein M is a combination of Ti, and Mg; M&#x2032; is Ti, Mg, or a combination of thereof; B is selected from the group of F, S, Se, or Cl; 0.8&#x3c;x&#x3c;1, 0&#x3c;y&#x3c;0.2, 0&#x3c;z&#x2264;0.2, 0&#x2264;&#x3b1;&#x2264;0.2, 0&#x2264;&#x3b5;&#x2264;0.1, 0.5&#x3c;x&#x2032;&#x3c;1, 0&#x3c;y&#x2032;&#x3c;0.5, 0&#x3c;z&#x2032;&#x2264;0.2, 0&#x2264;&#x3b1;&#x2032;&#x2264;0.2, and 0&#x2264;&#x3b5;&#x2032;&#x2264;0.1. The particle is a single crystal, a single particle, or a secondary particle comprising a plurality of primary particles; and the particle is a uniform composition or a concentration gradient composition.

Cathode active materials for secondary batteries

A cathode material comprising: a cathode active material of formula LiNiMnCoOor NaNiMnCoOand having a partial or whole particle concentration gradient, wherein at least two or three elements concentration gradually change in the part or whole particle from the center part to the surface part of the particle (i.e. along a vector radius); 0.5&#x3c;x&#x2264;1, 0&#x2264;y&#x2264;0.33, 0&#x2264;z&#x2264;0.33.

Cathode materials for lithium ion batteries, lithium ion batteries incorporating the cathode materials, and methods of operating the lithium ion batteries are provided. The materials, which are composed of lithium iron oxides, are able to undergo reversible anionic and cationic redox reactions with no Ogeneration.

Anionic redox active lithium iron oxide based cathode materials for rechargeable lithium ion batteries

An electrochemical device includes an air cathode comprising a SEI (solid electrolyte interphase) layer on a carbon support.

Cathode for alkaline earth air batteries

A metal-air battery includes an anode; a low-dimensional catalyst cathode; and an electrolyte; wherein: the low-dimensional catalyst cathode comprises a functional metal layer on a carbon support overcoated with a catalyst layer; the electrolyte comprises an aprotic solvent that is an ether-based solvent, a fluorinated ether-based solvent, an oligo (ethylene oxide) solvent, or a mixture of any two or more thereof; and the electrolyte is free of carbonate solvents.

Catalytic cathode for a lithium-oxygen battery

An electrochemical device includes an air cathode using air as the cathodic gas; a discharge product of sodium peroxide dihydrate; an anode comprising sodium metal; a porous fiber separator; and a non-aqueous electrolyte comprising a sodium salt and a solvent.

Rechargeable non-aqueous sodium-air batteries

An electrochemical device includes an air cathode; a lithium-containing anode metal; a porous separator; and a non-aqueous electrolyte comprising a lithium salt, a sodium salt, and a solvent; wherein the electrochemical device is a lithium-air battery. A total concentration of the lithium salt and the sodium salt in the non-aqueous electrolyte may be from about 0.001 M to about 7 M.

Rechargeable lithium-hydroxide based non-aqueous lithium oxygen batteries

A process of forming a coated cathode active material include preparing a cathode material precursor by co-precipitation; coating the cathode material precursor with an electrochemically inert coating material precursor by precipitation to form a coated cathode material precursor; lithiating the coated cathode material precursor with a lithium source material to form a lithiated coated cathode material precursor; and sintering the lithiated coated cathode material precursor to form a cathode active material coated with an electrochemically inert material.

Cathode materials for lithium ion batteries

Described herein is an electrochemical device including a cathode containing an electroactive material including LOor LO, wherein each L is independently selected from Li, Na, K, Be, Mg, Ca, and Al; the electroactive material is carbon-coated, metal-coated, metal oxide-coated, nano-sized, or doped; and the electroactive material is substantially free of transition metal catalyst.

High capacity lithium ion batteries having oxides, peroxides, or superoxides as cathode active material

An electrochemical device includes a cathode containing graphene-wrapped LiS nanoparticles. The graphene-wrapped LiS nanoparticles are prepared by a method including heating lithium metal, and a carbon-sulfur source or a carbon source and a sulfur source in a sealed container at a temperature to produce lithium vapors, and vapors of the carbon-sulfur source or vapors of the carbon source and vapors of the sulfur source; and cooling the sealed container to produce the graphene-wrapped LiS nanoparticles.

[object Object]

A lithium-air battery cathode catalyst includes core-shell nanoparticles on a carbon support, wherein: a core of the core-shell nanoparticles is platinum metal; and a shell of the core-shell nanoparticles is copper metal; wherein: the core-shell nanoparticles have a weight ratio of the copper metal to the platinum metal from about 4% to about 6% copper to from about 2% to about 12% platinum, with a remaining percentage being the carbon support.

Bi-metallic nanoparticles as cathode electrocatalysts

An active material composition includes a porous graphene nanocage and a source material. The source material may be a sulfur material. The source material may be an anodic material. A lithium-sulfur battery is provided that includes a cathode, an anode, a lithium salt, and an electrolyte, where the cathode of the lithium-sulfur battery includes a porous graphene nanocage and a sulfur material and at least a portion of the sulfur material is entrapped within the porous graphene nanocage. Also provided is a lithium-air battery that includes a cathode, an anode, a lithium salt, and an electrolyte, where the cathode includes a porous graphene nanocage and where the cathode may be free of a cathodic metal catalyst.

Porous graphene nanocages for battery applications

A composition includes LiO, reduced graphene oxide, and a metal catalyst or residue thereof.

Growing community of inventors

Bolingbrook, IL, United States of America

Jun Lu