Porous silicon oxide (SiO) anode enabled by a conductive polymer binder and performance enhancement by stabilized lithium metal power (SLMP)
Abstract
The invention demonstrates that only 2% functional conductive polymer binder without any conductive additives was successfully used with a micron-size silicon monoxide (SiO) anode material, demonstrating stable and high gravimetric capacity (>1000 mAh/g) for .about.500 cycles and more than 90% capacity retention. Prelithiation of this anode using stabilized lithium metal powder (SLMP.RTM.) improves the first cycle Coulombic efficiency of a SiO/NMC full cell from .about.48% to .about.90%. This combination enables good capacity retention of more than 80% after 100 cycles at C/3 in a lithium-ion full cell. We also demonstrate the important connection between porosity and the loading of silicon electrodes. By employing a highly porous silicon electrode, a high areal capacity (3.3 mAh/cm.sup.2) is obtained. This method works well to achieve high loading of other high-capacity alloy anodes, the state-of-art graphite anode, as well as a high loading of positive electrodes for LIBs.
- Inventors:
- Issue Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1568556
- Patent Number(s):
- 10340508
- Application Number:
- 14/741,383
- Assignee:
- The Regents of the University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- DOE Contract Number:
- AC02-05CH11231
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 06/16/2015
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Liu, Gao, and Zhao, Hui. Porous silicon oxide (SiO) anode enabled by a conductive polymer binder and performance enhancement by stabilized lithium metal power (SLMP). United States: N. p., 2019.
Web.
Liu, Gao, & Zhao, Hui. Porous silicon oxide (SiO) anode enabled by a conductive polymer binder and performance enhancement by stabilized lithium metal power (SLMP). United States.
Liu, Gao, and Zhao, Hui. Tue .
"Porous silicon oxide (SiO) anode enabled by a conductive polymer binder and performance enhancement by stabilized lithium metal power (SLMP)". United States. https://www.osti.gov/servlets/purl/1568556.
@article{osti_1568556,
title = {Porous silicon oxide (SiO) anode enabled by a conductive polymer binder and performance enhancement by stabilized lithium metal power (SLMP)},
author = {Liu, Gao and Zhao, Hui},
abstractNote = {The invention demonstrates that only 2% functional conductive polymer binder without any conductive additives was successfully used with a micron-size silicon monoxide (SiO) anode material, demonstrating stable and high gravimetric capacity (>1000 mAh/g) for .about.500 cycles and more than 90% capacity retention. Prelithiation of this anode using stabilized lithium metal powder (SLMP.RTM.) improves the first cycle Coulombic efficiency of a SiO/NMC full cell from .about.48% to .about.90%. This combination enables good capacity retention of more than 80% after 100 cycles at C/3 in a lithium-ion full cell. We also demonstrate the important connection between porosity and the loading of silicon electrodes. By employing a highly porous silicon electrode, a high areal capacity (3.3 mAh/cm.sup.2) is obtained. This method works well to achieve high loading of other high-capacity alloy anodes, the state-of-art graphite anode, as well as a high loading of positive electrodes for LIBs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {7}
}
Works referenced in this record:
Electronically Conductive Polymer Binder for Lithium-Ion Battery Electrode
patent-application, May 2012
- Liu, Gao; Xun, Shidi; Battaglia, Vincent S.
- US Patent Application 13/294885; 20120119155
Battery Cell Engineering and Design to Reach High Energy
patent-application, November 2013
- Masarapu, Charan; Deng, Haixia; Han, Yongbong
- US Patent Application 13/464034; 20130295439
Stabilized lithium metal powder for Li-ion application, composition and process
patent, September 2011
- Yakovleva, Marina V.; Gao, Yuan; Li, Yangxing
- US Patent Document 8,021,496