Uchicago Argonne, LLC

YoungHo Shin

Gregory K Krumdick

The invention provides a battery material comprising-monocrystalline particles not having internal void fractions, wherein each of the monocrystalline particles is without internal grain boundaries such that anisotropic volume change issues of polycrystalline particles don't occur when the particles are charged and discharged during cycling. Also provided is the monocrystalline particles with less-lithium on the particle surface. Also provided is a method for preparing monocrystalline battery material, wherein the battery material may be incorporated into a secondary battery.

Continuous hydrothermal manufacturing method for concentration-gradient monocrystalline battery material

The invention provides a cathode active material having a discrete change in concentrations of a first base region and a second pulse region. Also provided is a method for preparing a cathode active material, the method having the steps: supplying chelating agent, aqueous basic solution and a first aqueous metal salt solution to a reactor to create a base region; supplying a second aqueous metal-salt solution to a reactor to form a pulse region, wherein the second aqueous metal-salt solution is intermittently or continuously added during or after the creation of the base region; thermally treating the base region and the pulse region to create active metal precursors; mixing the precursors with lithium salt to produce a mixture; and thermally treating the mixture.

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LaGrange Highlands, IL, United States of America

YoungHo Shin