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Title: Controlled porosity in electrodes

Abstract

Porous electrodes in which the porosity has a low tortuosity are generally provided. In some embodiments, the porous electrodes can be designed to be filled with electrolyte and used in batteries, and can include low tortuosity in the primary direction of ion transport during charge and discharge of the battery. In some embodiments, the electrodes can have a high volume fraction of electrode active material (i.e., low porosity). The attributes outlined above can allow the electrodes to be fabricated with a higher energy density, higher capacity per unit area of electrode (mAh/cm.sup.2), and greater thickness than comparable electrodes while still providing high utilization of the active material in the battery during use. Accordingly, the electrodes can be used to produce batteries with high energy densities, high power, or both compared to batteries using electrodes of conventional design with relatively highly tortuous pores.

Inventors:
; ; ; ; ;
Issue Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1185284
Patent Number(s):
9065093
Application Number:
13/442,589
Assignee:
Massachusetts Institute of Technology (Cambridge, MA)
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: 2012 Apr 09
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 25 ENERGY STORAGE

Citation Formats

Chiang, Yet-Ming, Bae, Chang-Jun, Halloran, John William, Fu, Qiang, Tomsia, Antoni P., and Erdonmez, Can K. Controlled porosity in electrodes. United States: N. p., 2015. Web.
Chiang, Yet-Ming, Bae, Chang-Jun, Halloran, John William, Fu, Qiang, Tomsia, Antoni P., & Erdonmez, Can K. Controlled porosity in electrodes. United States.
Chiang, Yet-Ming, Bae, Chang-Jun, Halloran, John William, Fu, Qiang, Tomsia, Antoni P., and Erdonmez, Can K. Tue . "Controlled porosity in electrodes". United States. https://www.osti.gov/servlets/purl/1185284.
@article{osti_1185284,
title = {Controlled porosity in electrodes},
author = {Chiang, Yet-Ming and Bae, Chang-Jun and Halloran, John William and Fu, Qiang and Tomsia, Antoni P. and Erdonmez, Can K.},
abstractNote = {Porous electrodes in which the porosity has a low tortuosity are generally provided. In some embodiments, the porous electrodes can be designed to be filled with electrolyte and used in batteries, and can include low tortuosity in the primary direction of ion transport during charge and discharge of the battery. In some embodiments, the electrodes can have a high volume fraction of electrode active material (i.e., low porosity). The attributes outlined above can allow the electrodes to be fabricated with a higher energy density, higher capacity per unit area of electrode (mAh/cm.sup.2), and greater thickness than comparable electrodes while still providing high utilization of the active material in the battery during use. Accordingly, the electrodes can be used to produce batteries with high energy densities, high power, or both compared to batteries using electrodes of conventional design with relatively highly tortuous pores.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {6}
}

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