Method of characterizing an electrode binder

Details Method of characterizing an electrode binder Method of characterizing an electrode binder

1997-07-25

1999-05-11

Bell, Bruce F.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

429212, 429218, 204294, 204280, 296235, H01M4/62

Patent

active

059026995

ABSTRACT:
In a method of characterizing a polymer binder for cell electrodes in contact with an electrolyte and including a current collector and a paste containing an electrochemically active material and said binder, a spreading coefficient of the binder on the active material is calculated from the measured angle of contact between standard liquids and the active material and the binder, respectively. An interaction energy of the binder with the electrolyte is calculated from the measured angle of contact between the electrolyte and the binder. The binder is selected such that the spreading coefficient is less than zero and the interaction energy is at least 60 mJ/m.sup.2.

REFERENCES:
patent: 3507773 (1970-04-01), Grangaard
patent: 5527638 (1996-06-01), Kinoshita et al.
patent: 5631100 (1997-05-01), Yoshino et al.
patent: 5691085 (1997-11-01), Coco et al.
F. M. Fowkes et al, Attractive Forces at Interfaces, Industrial and Engineering Chemistry, vol. 56, 1964, pp. 40-52.

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