公开(公告)号：US10333141B2

公开(公告)日：2019-06-25

申请号：US15637291

申请日：2017-06-29

申请人： EOCELL LTD.

发明人： Yuriy Matus ,  Michael Pak

IPC分类号： H01M4/38 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/48 ,  H01M4/62 ,  H01M4/131 ,  H01M4/485 ,  H01M10/0525 ,  H01M4/02

摘要： A process for producing a silicon:silicon oxide:lithium composite (SSLC) material useful as a negative electrode active material for non-aqueous battery cells includes: producing a partially lithiated SSLC material by way of mechanical mixing; subsequently producing a further prelithiated SSLC material by way of spontaneous lithiation procedure; and subsequently producing a delithiated SSLC material by way of reacting lithium silicide within the dispersed prelithiated SSLC material with organic solvent(s) to extract lithium from the prelithiated SSLC material, until reactivity of lithium silicide within the prelithiated SSLC material with the organic solvent(s) ceases. The delithiated SSLC material is a porous plastically deformable matrix having nano silicon embedded therein. The delithiated SSLC material can have a lithium silicide content of less than 0.5% by weight. A battery cell having as its negative electrode active material an SSLC material as set forth herein can exhibit an irreversible capacity loss of less than 10%.

公开(公告)号：US10665886B2

公开(公告)日：2020-05-26

申请号：US16191452

申请日：2018-11-15

申请人： EOCELL LTD

发明人： Jun Li ,  Deepak Srivastava ,  Sang Yang

IPC分类号： H01M10/00 ,  H01M10/052 ,  G16C10/00 ,  G16C20/30 ,  G06F30/20 ,  G06F111/10

摘要： Methods, systems, and computer programs for selecting electrode materials for a lithium battery are presented. In one embodiment, a method includes an operation for developing models for structural and energy analysis of battery stability, safety, cycling and performance, where the models are developed based on a selection of elements and compositions for the electrode materials. Properties of at least on cell performance parameter are estimated, and a cell discharge rate behavior is calculated. Another operation in the method is provided for selecting an electrode material composition based on the estimated properties and the cell discharge rate behavior. The method operations are performed by a computer system that includes a processor.

公开(公告)号：US10177398B2

公开(公告)日：2019-01-08

申请号：US12953068

申请日：2010-11-23

申请人： Jun Li ,  Deepak Srivastava ,  Sang Yang

发明人： Jun Li ,  Deepak Srivastava ,  Sang Yang

IPC分类号： H01M10/00 ,  H01M10/052 ,  H01M10/0525 ,  G06F17/50 ,  G06F19/00

摘要： Provided are methods and computer programs for predicting lithium battery properties. One method includes operations for selecting candidate structures for the battery, and for obtaining a plurality of delithiated structures of the candidate structures with different lithium concentrations. The quantum mechanical (QM) energies of the delithiated structures are calculated, and a functional form is developed to obtain the voltage of the lithium battery. The functional form is a function of the lithium concentration and is based on the QM energies of the delithiated structures. Further, the capacity of the lithium battery is calculated based on a selected lithium concentration, where the functional form returns a cut-off voltage of the lithium battery when the lithium concentration is equal to the selected lithium concentration.

公开(公告)号：US09735425B2

公开(公告)日：2017-08-15

申请号：US15058359

申请日：2016-03-02

申请人： EOCELL LTD.

发明人： Yuriy Matus ,  Michael Pak

IPC分类号： H01M10/0525 ,  H01M4/38 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/48 ,  H01M4/62 ,  H01M4/131 ,  H01M4/485 ,  H01M4/02

CPC分类号： H01M4/386 ,  H01M4/0402 ,  H01M4/131 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/364 ,  H01M4/382 ,  H01M4/483 ,  H01M4/485 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2220/20 ,  H01M2220/30

摘要： A process for producing a silicon:silicon oxide: lithium composite (SSLC) material useful as a negative electrode active material for non-aqueous battery cells includes: producing a partially lithiated SSLC material by way of mechanical mixing; subsequently producing a further prelithiated SSLC material by way of spontaneous lithiation procedure; and subsequently producing a delithiated SSLC material by way of reacting lithium silicide within the dispersed prelithiated SSLC material with organic solvent(s) to extract lithium from the prelithiated SSLC material, until reactivity of lithium silicide within the prelithiated SSLC material with the organic solvent(s) ceases. The delithiated SSLC material is a porous plastically deformable matrix having nano silicon embedded therein. The delithiated SSLC material can have a lithium silicide content of less than 0.5% by weight. A battery cell having as its negative electrode active material an SSLC material as set forth herein can exhibit an irreversible capacity loss of less than 10%.

公开(公告)号：US09589098B2

公开(公告)日：2017-03-07

申请号：US12953080

申请日：2010-11-23

申请人： Deepak Srivastava ,  Sang Yang ,  Jun Li

发明人： Deepak Srivastava ,  Sang Yang ,  Jun Li

IPC分类号： G06G7/48 ,  G06F19/00

CPC分类号： G06F19/00 ,  H01M10/00 ,  H01M10/0525

摘要： Methods and computer programs to quantify defects in an experimentally synthesized material for use in a battery are provided. A method includes an operation for obtaining spectra of the experimentally synthesized material. Further, defected structures of a crystalline structure are created via simulation, and spectra of the defected structures are obtained via simulation. In another method operation, the spectra of the experimentally synthesized material is compared to the spectra of the defected structures obtained via simulation, and if the spectra of the experimentally synthesized material is substantially equal to the spectra of the defected structures obtained via simulation then the defects in the experimentally synthesized material are quantified according to the defects in the defected structures.

摘要翻译： 提供了用于量化用于电池的实验合成材料中的缺陷的方法和计算机程序。 一种方法包括获得实验合成材料的光谱的操作。 此外，通过模拟产生晶体结构的缺陷结构，并且通过模拟获得缺陷结构的光谱。 在另一种方法操作中，将实验合成材料的光谱与通过模拟获得的缺陷结构的光谱进行比较，并且如果实验合成材料的光谱基本上等于通过模拟获得的缺陷结构的光谱，则缺陷 在实验合成材料中根据缺陷结构的缺陷量化。