Electrode for electrochemical devices, and electrochemical device
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorKazuaki Yamashita
Life of this patent
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Abstract
An electrode for an electrochemical device includes porous carbon particles. In a pore distribution of the porous carbon particles, a ratio B/A of an integrated volume B to an integrated volume A ranges from 1 to 1.5, inclusive. The integrated volume A is an integrated volume of pores each having a pore diameter of more than or equal to 1 nm and less than 2 nm. The integrated volume B is an integrated volume of pores each having a pore diameter of more than or equal to 2 nm and less than or equal to 50 nm. A volume-based particle diameter frequency distribution of the porous carbon particles has a first peak and a second peak. A particle diameter corresponding to the second peak is larger than a particle diameter corresponding to the first peak.
Claims5
An electrode for an electrochemical device, the electrode comprising porous carbon particles, wherein:
- in a pore distribution of the porous carbon particles, a ratio B/A of an integrated volume B to an integrated volume A ranges from 1 to 1.5, inclusive, the integrated volume A being an integrated volume of pores each having a pore diameter of more than or equal to 1 nm and less than 2 nm, the integrated volume B being an integrated volume of pores each having a pore diameter of more than or equal to 2 nm and less than or equal to 50 nm,
- a volume-based particle diameter frequency distribution of the porous carbon particles has a first peak and a second peak, a particle diameter corresponding to the second peak being larger than a particle diameter corresponding to the first peak, and
- the first peak has a maximum frequency larger than a maximum frequency of the second peak.
Dependencies are inferred from the claim text.