公开(公告)号：US20210300780A1

公开(公告)日：2021-09-30

申请号：US16317981

申请日：2017-07-11

Applicant: HALDOR TOPSØE A/S

Inventor： Line Holten KOLLIN ,  Rainer Küngas ,  Steen Henrik Olsen ,  Anni Stahl ,  Søren DAHL

IPC: C01G53/06 ,  C01G53/00 ,  B01J19/18

Abstract: In a method for the precipitation of particles of a metal carbonate material comprising nickel and manganese in an atomic ratio of 0≤Ni:Mn≤1:3, aqueous solutions comprising sulfates or nitrates of nickel and manganese are mixed with aqueous solutions of carbonates or mixtures of carbonates and hydroxides of sodium or potassium in a stirred reactor at pH>7.5 without the use of a chelating agent. Thereby agglomerated particles are formed without any subsequent process steps, in particular no subsequent process at temperatures higher than the precipitation temperature.

公开(公告)号：US20190173084A1

公开(公告)日：2019-06-06

申请号：US16323566

申请日：2017-08-21

Applicant: HALDOR TOPSØE A/S

Inventor： Søren DAHL ,  Jakob Weiland HØJ ,  Jonathan HØJBERG ,  Line Holten KOLLIN

IPC: H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  C01G45/12

Abstract: The invention relates to a cathode active material for a high voltage secondary battery with a cathode arranged for being fully or mainly operated above 4.4 V vs. Li/Li+, wherein the cathode active material is an oxide that comprises sulfate as a capacity fade reducing compound. The invention also relates to a cathode active material for a high voltage secondary battery having the composition LixMyMn2−yO4−v(SO4)z, where 0.9≤x≤1.1, 0.4≤y≤0.5, 0