Surface-modified cyanide-based transition metal compounds
View Patent ↗A system, method, and articles of manufacture for a surface-modified transition metal cyanide coordination compound (TMCCC) composition, an improved electrode including the composition, and a manufacturing method for the composition. The composition, compound, device, and uses thereof according to A x Mn (y-k) M j k [Mn m (CN) (6-p-q) (NC) p (Che) r q ] z . (Che) r w (Vac) (1-z) .nH 2 O (wherein Vac is a Mn(CN) (6-p-q) (NC) p (Che) r q vacancy); wherein Che is an acid chelating agent; wherein: A=Na, K, Li; and M=Mg, Al, Ca, Sc, Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Ga, Pd, Ag, Cd, In, Sn, Pb; and wherein 0<j≦4; 0≦k≦0.1; 0≦(p+q)<6; 0<x≦4; 0≦y≦1; 0<z≦1; 0<w≦0.2; 0<n≦6; −3≦r≦3; and wherein: x+2(y−k)+jk+(m+(r+1)q−6)z+wr=0.
1. A method for manufacturing an environment-stabilized transition metal cyanide coordination compound (TMCCC) material, comprising:
a) producing a particulated TMCCC material; and thereafter
b) combining the particulated TMCCC material with a solution including a material containing an acid group to produce a stabilized TMCCC material;
wherein said stabilized TMCCC material includes:
at least one composition represented by Formula I:
A x Mn (y-k) M j k [Mn m (CN) (6-p-q) (NC) p (Che) r q ] z .(Che) r w (Vac) (1-z) .n H 2 O (Formula I)
wherein, in Formula I, each A is an independently selected alkali metal Li, Na, or K; and each dopant M may optionally be at least one independently selected alkaline earth metal Mg or Ca, post-transition metal Al, Ga, In, Sn, or Pb, or transition metal Sc, Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Pd, Ag, or Cd having an average valence j; and Che represents an acid chelating agent which includes ligand binding atoms that form one or more covalent linkages with Mn or with Mn and M; and
wherein 0<j≦4, 0≦k≦0.1, 0≦(p+q)≦6, 0<x≦4, 0<y≦1, 0<z≦1, 0<w≦0.2; −3≦r≦3; and 0≦n≦6;
wherein x+2(y−k)+jk+(m+(r+1)q−6)z+wr=0; and
wherein Formula I includes one or more Mn(CN) (6-p-q) (NC) p (Che) r q complexes each including an Mn atom, and wherein p is an average number of NC groups found in said one or more Mn(CN) (6-p-q) (NC) p (Che) r q complexes; and
wherein q is an average number of Che groups found in said one or more Mn(CN) (6-p-q) (NC) p (Che) r q complexes; and
wherein m is an average valence of said Mn atoms found in said one or more Mn(CN) (6-p-q) (NC) p (Che) r q complexes;
wherein (Vac) identifies a Mn(CN) (6-p-q) (NC) p (Che) r q vacancy
wherein CN identifies a cyano group; and
wherein NC identifies an isocyano group.
2. The method of claim 1 wherein said solution comprises one or more components selected from the group consisting of formic acid, acetic acid, gluconic acid, malic acid, citric acid, homo citric acid, succinic acid, lactic acid, malonic acid, aspartic acid, 3,4-dihydroxybenzoic acid, 2,3-dihydroxybenzoic acid, tartaric acid, salicylic acid, glutamic acid, oxalic acid, 2,3-Di mercapto-1-propane sulfonic acid, meso-2,3-di mercapto succinic acid, glycine, alanine, imino di acetic acid, EDTA (ethylene diamine tetra-acetic acid), EGTA ethylene glycol-bis(2-amino ethyl ether)-N,N,N′,N′-tetra acetic acid), EDDS (ethylene di amine-N,N′-di succinic acid), NTA (nitrilo-tri-acetic acid), DTPA (diethyl triamine penta-acetic acid), PDTA (1,3-propylene diamine penta-acetic acid), MGDA (methyl glycine diacetic acid), β-ADA (β-alanine diacetic acid), HEIDA (N-(2-hydroxyethyl)imino diacetic acid), DHEG (N,N-bis(2-hydroxyethyl)glycine), HEDTA (hydroxy ethyl-ethylene diamine tri-acetic acid), quadrol (N,N,N′,N′-tetrakis-2-hydroxyisopropyl-ethylendiamine), DTPMP (diethylene triaminopenta (methylene phosphonic acid)), EDTMP (ethylene diaminotetra(methylene phosphonic acid)), HDTMP (hexamethylene diaminotetra (methylene phosphonic acid)), ATMP (aminotrimethylene phosphonic acid), HEDP (hydroxyethane dimethylene phosphonic acid), PBTC (2-butane phosphate 1,2,4-tricarboxylic acid), phosphoric acid, pyrophosphoric acid, and combinations thereof.