Electrode having modal distribution of zinc-based particles
View Patent ↗An electrode containing zinc-based particles suspended in a fluid medium is disclosed. The zinc-based particles have a multi-modal distribution, such as a bi-modal distribution, of particle sizes, particle morphologies and/or particle compositions. The electrode can be used as the anode in an alkaline battery, such as a primary alkaline battery.
1. An electrochemical cell having
a cathode;
an anode comprising zinc particles suspended in a liquid medium, the particles being suspended in a fluid medium, at least 10%, by weight, of the particles being spherical particles having an effective particle size diameter distribution peak between 50 microns and 100 microns;
a separator; and
an alkaline electrolyte.
2. The electrochemical cell of claim 1 , wherein the spherical particles have an effective particle size diameter distribution between 60 microns and 90 microns.
3. The electrochemical cell of claim 1 , wherein the spherical particles an effective particle size diameter distribution between 70 microns and 80 microns.
4. The electrochemical cell of claim 1 , wherein spherical particles have an effective particle size diameter distribution of about 74 microns.
5. The electrochemical cell of claim 1 , wherein at least 25%, by weight, of the particles are spherical particles having an effective particle size diameter distribution between 50 microns and 100 microns.
6. The electrochemical cell of claim 1 , wherein the zinc particles comprise a zinc alloy.