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US 10,950,851 B2Granted
Electrode including active materials having coat materials with different isoelectric points, and battery using same
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYuji Yamamoto, Ryuta Sugiura
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Abstract
One aspect of the present invention provides an electrode having a collector and an electrode mix layer disposed on the collector. The electrode mix layer contains an active material A having a core portion A and a coat material A, and an active material B having a core portion B and a coat material B. The isoelectric point of the coat material A is 7 or lower. The isoelectric point of the coat material B is 7 or higher. The isoelectric point of at least one of the coat material A and the coat material B is not 7.
Claims17
An electrode comprising:
- a collector;
- and
- an electrode mix layer disposed on the collector, the electrode mix layer comprising:
- an active material A provided with a core portion A and a coat material A disposed on a surface of the core portion A, and
- an active material B provided with a core portion B and a coat material B disposed on a surface of the core portion B, wherein:
- the coat material A has an isoelectric point, based on an electrophoretic method, of 7 or lower,
- the coat material B has an isoelectric point, based on the electrophoretic method, of 7 or higher,
- the isoelectric point of at least one of the coat material A and the coat material B is not 7, and
- the active material A and the active material B have different surface charge states.
6 more elements
Dependencies are inferred from the claim text.