Patent ID: 11967686
Assignee: NATRON ENERGY, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A method for assembling an electrochemical cell, comprising:
a) assembling a cell stack having a liquid electrolyte, an anode electrode, a separator, and a cathode electrode, and an electrode-electrolyte communication having a first particular one electrode of said electrodes electrochemically communicated with said liquid electrolyte, with components of said cell stack having an as-synthesized set of properties, a pre-assembly set of properties before said electrode-electrolyte communication, and a post-assembly set of properties after said first particular electrode is electrochemically communicated with said liquid electrolyte;
b) transferring water from said liquid electrolyte to at least one of said electrodes including said first particular electrode providing a water transfer; and thereafter
c) decreasing a concentration of water in said liquid electrolyte;
wherein said first particular electrode contains an active material including a transition metal cyanide coordination compound material having a composition conforming to Formula I, Formula I including AxPy[R(CN)6]z(H2O)n;
wherein A represents an alkali cation and P and R each represent one or more transition metal cations;
wherein 0.5<z<1; and
wherein x, y, and z are related based on electrical neutrality, x>0, y>0, z>0; and
wherein n=6*(1−z)+mk, with n>0, with k=0 identifying an as-synthesized material for said first particular electrode and k=1 to 2 identifying a set of post-synthesized states for said first particular electrode, and with 6*(1−z) identifying as a quantity of coordinated water of said compound material, and with each mk>0, each mk identifying as a quantity of interstitial water of said compound material for one of said states of said first particular electrode, with each said quantity mk of interstitial water being equivalent to a weight percentage Mk=mk*WH2O/Wdry*100%, with WH2O being the molecular weight of water and Wdry being the molecular weight of the composition conforming to Formula I excluding all of its water content, with M0 identifying as an as synthesized set of properties for said first particular electrode, with M1 identifying as said pre-assembly set of properties for said first particular electrode, and with M2 identifying as said post-assembly set of properties for said first particular electrode; and
wherein said liquid electrolyte includes a polar organic solvent combined with an alkali metal salt and water having a water concentration, said water concentration including a pre-assembly water concentration c1 and including a post-communication water concentration c2 and wherein c1>c2;
wherein said as-synthesized set of properties includes M0 up to 45% for a set of as-synthesized materials, said set of as-synthesized materials including said composition conforming to Formula I;
wherein said M1<12% for a set of electrode materials of said first particular electrode, said set of electrode materials including said composition conforming to Formula I; and
wherein M2>M1.