公开(公告)号：US20190300383A1

公开(公告)日：2019-10-03

申请号：US16089172

申请日：2017-12-14

Applicant: Lionano Inc.

Inventor： Dong Ren ,  Yun Shen ,  Yingchao Yu

IPC: C01G53/00 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/04

Abstract: The present invention generally relates to materials for batteries and other applications. For instance, certain embodiments are directed to a positive electroactive material, e.g., for use in a lithium-ion battery. In some embodiments, the material may have the formula LiaMb[NixMnyCoz]1-bO2, where 1.00≤a

公开(公告)号：US20190081322A1

公开(公告)日：2019-03-14

申请号：US16084519

申请日：2018-02-21

Applicant: Lionano Inc.

Inventor： Dong Ren ,  Yun Shen ,  Yingchao Yu

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525

Abstract: The present invention generally relates to materials for electrochemical cells, e.g., for use in batteries such as lithi- um-ion batteries, and other applications. For example, certain embodiments of the present invention provide a positive electroac- tive material, which may have a core-shell structure. The material, in certain embodiments, has the formula (Li1+a[NiqMrCo1-q-r] O2)x.(Li1−a[NisMntCO1-s-t]O2)1-x, where M may be Mn and/or Al. In some cases, the first portion may represent the core, while the second portion may represent the shell in a core-shell particle. In certain embodiments, x is a numerical value inclusively ranging from 0.70 to 0.95, a is a numerical value inclusively ranging from 0.01 to 0.0 7, q is a numerical value inclusively ranging from 0.80 to 0.96, r is a numerical value inclusively ranging from 0.01 to 0.10, s is a numerical value inclusively ranging from 0.34 to 0.70, t is a numerical IN value inclusively ranging from 0.20 to 0.40. Additionally, some embodiments are directed to methods of forming particles, such as core- shell particles, by forming the core and the shell within the same reactor, and/or by altering the pH to produce the core and the shell, and/or by altering the stirring rate to produce the core and the shell, and/or by altering the feed rate to produce the core and the shell. in In some embodiments, by controlling reaction parameters such as these, the materials may have a surprisingly narrow, homogeneous particle size distribution, e.g., as measured by Span or other suitable techniques.

公开(公告)号：US10741837B2

公开(公告)日：2020-08-11

申请号：US15270767

申请日：2016-09-20

Applicant: Lionano Inc.

Inventor： Dong Ren ,  Yun Shen ,  Yingchao Yu

IPC: H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  C01G53/00 ,  H01M4/02

Abstract: A positive electroactive material for a lithium-ion battery can have a tap density ranging from 2.50 to 2.90 g/cm3, a Span value ranging from 1.04 to 1.68 and/or a capacity ranging from 195 to 210 mAh/g obtained using a discharging current of C/5 current rate. The material can have a formula Lia[NixMnyCo1−x−y]zM1−zO2, wherein a is between approximately 1.02 and 1.07, x is between approximately 0.60 to 0.82, y is between approximately 0.09 to 0.20, z is between approximately 0.95 to 1.0, and 1−x−y is greater than 0. A cost-effective and large-scale synthetic method for preparing the positive electroactive material, an electrochemical cell containing the positive electroactive material, and a battery comprising one or more lithium ion electrochemical cells are also described.