US Patent Application 18028563. POSITIVE ELECTRODE FOR SECONDARY BATTERY AND SECONDARY BATTERY INCLUDING THE SAME simplified abstract
POSITIVE ELECTRODE FOR SECONDARY BATTERY AND SECONDARY BATTERY INCLUDING THE SAME
Organization Name
Inventor(s)
POSITIVE ELECTRODE FOR SECONDARY BATTERY AND SECONDARY BATTERY INCLUDING THE SAME - A simplified explanation of the abstract
This abstract first appeared for US patent application 18028563 titled 'POSITIVE ELECTRODE FOR SECONDARY BATTERY AND SECONDARY BATTERY INCLUDING THE SAME
Simplified Explanation
The present patent application is about a positive electrode for a secondary battery. The invention proposes a dual layer coating process to achieve uniform distribution of binder in the thickness direction of the electrode active material layer. This improves the binding force by allowing the binder resin to be retained in the lower layer portion of the positive electrode active material layer. Additionally, the invention suggests using a different composition of positive electrode material in the upper and lower layer portions of the positive electrode. This includes introducing a sacrificial positive electrode material only in the lower layer portion.
- Dual layer coating process is used to achieve uniform binder distribution in the positive electrode.
- Binder resin is retained in the lower layer portion to improve binding force.
- Different compositions of positive electrode material are used in the upper and lower layer portions.
- Sacrificial positive electrode material is introduced only in the lower layer portion.
- The invention aims to improve the electrochemical characteristics of the battery.
Original Abstract Submitted
The present disclosure relates to a positive electrode for a secondary battery. According to the present disclosure, when manufacturing a positive electrode having the same thickness, it is possible to make the binder distribution uniform in the thickness direction of the electrode active material layer by using a dual layer coating process, and to provide an effect of improving binding force by allowing the binder resin of the lower layer portion of the positive electrode active material layer to be retained in the lower layer portion. In addition, it is possible to improve the electrochemical characteristics of a battery by using a different composition of positive electrode material in the upper layer portion and the lower layer portion of the positive electrode, particularly, by introducing a sacrificial positive electrode material merely to the lower layer portion.
