Controlled porosity in electrodes
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.
- Issue Date:
- OSTI Identifier:
- 1185284
- Assignee:
- Massachusetts Institute of Technology (Cambridge, MA) LBNL
- Patent Number(s):
- 9,065,093
- Application Number:
- 13/442,589
- Contract Number:
- AC02-05CH11231
- Resource Relation:
- Patent File Date: 2012 Apr 09
- Research Org:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org:
- USDOE
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 25 ENERGY STORAGE
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