Methods of fabricating rechargeable positive electrodes
AssigneePolyPlus Battery Company
InventorMay-Ying Chu
Life of this patent
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Abstract
Disclosed are methods of making solid-phase active-sulfur-based composite electrodes. The method begins with a step of combining the electrode components (including an electrochemically active material, an electronic conductor, and an ionic conductor) in a slurry. Next, the slurry is homogenized such that the electrode components are well mixed and free of agglomerates. Very soon thereafter, before the electrode components have settled or separated to any significant degree, the slurry is coated on a substrate to form a thin film. Finally, the coated film is dried to form the electrode in such a manner that the electrode components do not significantly redistribute.
Claims22
A method of forming an active-sulfur-containing electrode, the method comprising the following steps:
- combining active-sulfur, an electronic conductor, and an ionic conductor to form a mixture;
- homogenizing the mixture to form a homogeneous mixture;
- and
- forming the active-sulfur-containing electrode from said homogeneous mixture, wherein said active-sulfur-containing electrode has at least about 10% of its active-sulfur accessible to electrons and ionic charge carriers.
A method of forming an active-sulfur-containing electrode, the method comprising the following steps:
- combining active-sulfur, an electronic conductor, and an ionic conductor to form a mixture;
- homogenizing the mixture to form a homogeneous mixture;
- and
- depositing a layer of said homogeneous mixture on a substrate by a technique that does not rely on capillary action to form said active-sulfur containing electrode, wherein said active-sulfur-containing electrode has at least about 10% of its active-sulfur is accessible to electrons and ionic charge carriers.
Dependencies are inferred from the claim text.