Non-lithium metal ion battery electrode material architecture
A method for configuring a non-lithium-intercalation electrode includes intercalating an insertion species between multiple layers of a stacked or layered electrode material. The method forms an electrode architecture with increased interlayer spacing for non-lithium metal ion migration. A laminate electrode material is constructed such that pillaring agents are intercalated between multiple layers of the stacked electrode material and installed in a battery.
1. A method of fabrication and use of a battery electrode, comprising:
delaminating an electrode material comprising A x M y N z ,
exposing the delaminated A x M y N z to a solution containing the insertion species, such that the insertion species intercalate A x M y N z layers;
restacking the delaminated A x M y N z around the insertion species to form a battery electrode, wherein restacking comprises forming an electrode of a layered structure comprising A x M y N z , a pillaring agent, and at least one non-lithium metal ion X n+ , wherein, in a first state, the layered structure comprises a first layer of A x M y N z a second layer of A x M y N z , and a spacing between the first and the second layers, wherein the pillaring agent and the non-lithium metal ion are disposed between the first layer and the second layer of the A x M y N z ; and
cycling the battery electrode for a plurality of cycles, wherein, in a second state, subsequent to a plurality of battery electrode cycles, the pillaring agent remains disposed between the first and second layers and the layered structure is configured to maintain the spacing of the first state.
2. The method of claim 1 , wherein the delaminating A x M y N z electrode material comprises at least one method chosen from the group consisting of physical exfoliation, electrochemical reduction/oxidation, and chemical reduction/oxidation.
3. The method of claim 1 , wherein the restacking the delaminated A x M y N z around the insertion species comprises at least one method chosen from the group consisting of filtration, centrifugation, drying, or combinations thereof at a temperature ranging from −80° C. to 150° C.
4. The method of claim 1 , wherein the non-lithium metal ions comprise a formula X n+ , wherein X is at least one non-lithium metal chosen from the group consisting of Na, K, Mg, Ca, Al, Ga, and Y, and 1≦n≦3.
5. A battery comprising:
an electrolyte; and
at least one electrode material architecture comprising a layered structure comprising A x M y N z , a pillaring agent, and at least one non-lithium metal ion X n+
wherein the layered structure comprises a first layer of A x M y N z a second layer of A x M y N z , and a spacing between the first and the second layers, wherein the pillaring agent and the non-lithium metal ion are disposed between the first layer and the second layer of the A x M y N z ; and
wherein the layered structure is configured such that, subsequent to a plurality of battery electrode cycles, the pillaring agent remains disposed between the first and second layers and the spacing between the first and second layers does not change;
A is at least one low-valence element chosen from the group consisting of
H, alkaline, and alkaline earth metals, and 0≦x≦1.5;
M is at least one metal and 1≦y≦2.5;
N is at least one non-metal element chosen from the group consisting of O, S, Se, N, P, Br, and I, and 1.8≦z≦4.2; and
X is at least one non-lithium metal ion chosen from the group consisting of Na, K, Mg, Ca, Al, Ga, and Y, and 1≦n≦3.
6. The battery of claim 5 , wherein a low-valence element further comprises at least one chosen from the group consisting of Li, Na, K, Mg, and Ca.
7. The battery of claim 5 , wherein at least one metal comprises a metal chosen from the group consisting of Ti, Zr, V, Ta, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, Zn, Cd, Ga, In, Sn, Pb, Sb, Bi, and Te.
8. The battery of claim 5 , wherein the pillaring agent comprises at least one electrically neutral polymer containing O, N, F, and/or S atoms chosen from the group consisting of poly(ethylene oxide), poly(propylene glycol), poly(vinylpyrrolidinone), methyl cellulose, poly(methyl acrylate), polyacrylonitrile, polyethyleneimine, poly(aniline), and polypyrrole.
9. The battery of claim 5 , wherein the pillaring agent comprises at least one electrically neutral molecule containing O, N, F, and/or S atoms chosen from the group consisting of alkylamines and glymes.
10. The battery of claim 9 , wherein the alkylamines comprise at least one molecule chosen from the group consisting of diethylamine, dibutylamine, dipentylamine, N-isopropylcyclohexylamine, and dicyclohexylamine.
11. The battery of claim 9 , wherein the glymes consist of at least one molecule chosen from the group consisting of diglyme, triglyme, and tetraglyme.
12. The battery of claim 5 , wherein the non-lithium metal ions are positioned within the lattice spacing of A x M y N z and induce a lattice expansion of 1-300% in at least one dimension.