28-03-2013 дата публикации
Номер: US20130078523A1
Принадлежит:
A high capacity electrode includes a conducting substrate on which a plurality of support filaments are disposed. Each of the support filaments have a length substantially greater than their width and may include, for example, a carbon nano-tube (CNT), a carbon nano-fiber (CNF), and/or a nano-wire (NW). The support filaments are coated with a material, such as silicon, having a greater ion absorbing capacity greater than the neat support filaments. A trunk region of the support filaments proximate to the substrate is optionally kept free of ion absorbing material. This trunk region allows for the expansion of the ion absorbing material without detaching the support filaments form the substrate. 1. A system comprising: a substrate,', 'a plurality of support filaments attached to the substrate, and', 'a non-particulate ion absorbing material attached to the support filaments and configured to expand in volume at least 5 percent up to approximately 400 percent when absorbing ions;, 'A first electrode disposed in a first region of electrolyte and including'}a separator configured to separate the first region and a second region of electrolyte; anda second electrode disposed in the second region of electrolyte, the first and second electrodes and separator configured to operate as a rechargeable battery.2. The system of claim 1 , wherein the ion absorbing material covers some but not all of each of the plurality of support filaments.3. The system of claim 1 , wherein the ion absorbing material covers an area of a member of the plurality of support filaments distal to the substrate and does not cover an area of the member of the plurality of support filaments proximate to the substrate.4. The system of claim 1 , wherein a thickness of the ion absorbing material is greater at an end of the support filaments distal to the substrate relative to a thickness at an end of the support filaments proximate to the substrate.5. The system of claim 1 , wherein the plurality of ...
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