Invention Grant
- Patent Title: High energy density secondary lithium batteries
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Application No.: US16253688Application Date: 2019-01-22
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Publication No.: US10930969B2Publication Date: 2021-02-23
- Inventor: Jagjit Nanda , Nancy J. Dudney , Chaitanya Kumar Narula , Sreekanth Pannala , Raymond Robert Unocic , Surendra Kumar Martha
- Applicant: UT-BATTELLE, LLC
- Applicant Address: US TN Oak Ridge
- Assignee: UT-BATTELLE, LLC
- Current Assignee: UT-BATTELLE, LLC
- Current Assignee Address: US TN Oak Ridge
- Agency: Fox Rothschild LLP
- Main IPC: H01M10/0525
- IPC: H01M10/0525 ; H01M4/04 ; H01M4/131 ; H01M4/134 ; H01M4/1391 ; H01M4/1395 ; H01M4/505 ; H01M4/525 ; H01M4/587 ; H01M4/62 ; H01M4/02

Abstract:
A lithium ion battery includes a positive electrode comprising carbon fibers, a binder composition with conductive carbon, and a lithium rich composition. The lithium rich composition comprises at least one selected from the group consisting of Li1+x(My MzII MwIII)O2 where x+y+z+w=1, and where M, MII and MIII are interchangeably manganese, nickel and cobalt, and LiM*2-xMx*IIO4, where M* and M*II are manganese and nickel, respectively, with x=0.5. A negative electrode comprises carbon fibers having bound thereto silicon nanoparticles, and a mesophase pitch derived carbon binder between the silicon nanoparticles and the carbon fibers. An electrolyte is interposed between the positive electrode and the negative electrode. Methods of making positive and negative electrodes are also disclosed.
Public/Granted literature
- US20190157712A1 HIGH ENERGY DENSITY SECONDARY LITHIUM BATTERIES Public/Granted day:2019-05-23
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