JP-2022534928-A5 -

Dates

Publication Date

20230512

Application Date

20200529

Description

Many modifications can be made to any of the above embodiments without departing from the scope of the invention considered. All references, patents, or scientific papers referenced herein are incorporated herein by reference for all purposes. The present invention provides, for example, the following items: (Item 1) An electrode material comprising an electrochemical active material, wherein the electrochemical active material comprises a layered potassium metal oxide of formula K x MO 2 , where x is a numerical value such as 0 < x ≤ 0.7, and M is selected from Co, Mn, Fe, Ni, Ti, Cr, V, Cu, Zr, Sb, and at least two combinations thereof. (Item 2) The electrode material according to item 1, wherein the electrochemical active material comprises a layered potassium metal oxide of the formula K x M y Mn 1-y O 2 , where x is as defined in item 1, y is a numerical value such as 0 ≤ y ≤ 1.0, and M is selected from Co, Fe, Ni, Ti, Cr, V, Cu, Zr, Sb, and at least two combinations thereof. (Item 3) The electrode material described in item 1 or 2 , wherein the layered potassium metal oxide is of the formula K x Fe y Mn 1-y O 2, where x is as defined in item 1, and y is a numerical value such as 0 ≤ y ≤ 1.0. (Item 4) The electrode material according to item 1 or 2, wherein the layered potassium metal oxide is of the formula K x MnO 2 , where x is as defined in item 1. (Item 5) The electrode material according to item 1 or 2, wherein the layered potassium metal oxide is of the formula K x NiMnO 2 , where x is as defined in item 1. (Item 6) The electrode material according to item 1 or 2, wherein the layered potassium metal oxide is of the formula K x NiMnTiO 2 , where x is as defined in item 1. (Item 7) The electrode material according to item 1 or 2, wherein the layered potassium metal oxide is of the formula K x FeMnO 2 , where x is as defined in item 1. (Item 8) The electrode material described in item 1 or 2, wherein the layered potassium metal oxide is of the formula K x Ni 0.5x Mn 1-0.5x O 2 , where x is as defined in item 1. (Item 9) The electrode material according to item 1 or 2 , wherein the layered potassium metal oxide is of the formula K x Ni 0.5x Mn 1-0.5x-y M y O 2 , where x is as defined in item 1, y is a numerical value such as 0 ≤ y ≤ (1.0 - 0.5x), and M is selected from Co, Fe, Ti, Cr, V, Cu, Zr, Sb, and at least two combinations thereof. (Item 10) The electrode material described in item 9, wherein the layered potassium metal oxide is of the formula K x Ni 0.5x Mn 1-0.5x Ti y O 2 , where x is as defined in item 1 and y is as defined in item 9. (Item 11) The electrode material according to item 9 or 10, wherein the layered potassium metal oxide is of the formula K 0.4 Ni 0.2 Mn 0.8-y Ti y O 2 , where y is a numerical value such as 0 ≤ y ≤ 0.8. (Item 12) The layered potassium metal oxides are K 0.67 Ni 0.33 Mn 0.67 O 2 , K 0.6 Ni 0.3 Mn 0.7 O 2 , K 0.5 Ni 0.25 Mn 0.75 O 2 , K 0.4 Ni 0.2 Mn 0.8 O 2 , K 0.4 Ni 0.2 Mn 0.6 Ti 0.2 O 2 , K 0.4 Ni 0.2 Mn 0.7 Ti 0.1 O 2 , K 0.4 Ni 0.2 Mn 0.75 Ti 0.05 O 2 , K 0.4 Fe 0.4 Mn 0.6 O 2 , K 0.4 Ni Electrode material according to any one of items 1 to 11, selected from the group consisting of 0.1 Mn 0.9 O 2, K 0.4 MnO 2, K 0.3 Ni 0.15 Mn 0.85 O 2 , K 0.3 Ni 0.2 Mn 0.8 O 2 , K 0.3 MnO 2 , K 0.2 Ni 0.1 Mn 0.9 O 2 , K 0.2 Ni 0.2 Mn 0.8 O 2 , K 0.2 MnO 2 , K 0.1 Ni 0.05 Mn 0.95 O 2 , K 0.1 Ni 0.1 Mn 0.9 O 2 , and at least two combinations thereof . (Item 13) The electrode material according to item 12, wherein the layered potassium metal oxide is K 0.4 Ni 0.2 Mn 0.8 O 2 . (Item 14) The electrode material according to item 12, wherein the layered potassium metal oxide is K 0.4 Ni 0.2 Mn 0.6 Ti 0.2 O 2 . (Item 15) The electrode material according to item 12, wherein the layered potassium metal oxide is K 0.4 Ni 0.2 Mn 0.75 Ti 0.05 O 2 . (Item 16) The electrode material according to item 12, wherein the layered potassium metal oxide is K 0.4 Fe 0.4 Mn 0.6 O 2 . (Item 17) An electrode material comprising an electrochemical active material, wherein the electrochemical active material comprises a layered potassium metal oxide of the formula Na z K x MO 2 , where x is a numerical value such as 0 < x ≤ 0.7, z is a numerical value such as 0 < x ≤ 0.8, and M is selected from Co, Mn, Fe, Ni, Ti, Cr, V, Cu, Zr, Sb, and at least two combinations thereof. (Item 18) The electrode material according to item 17, wherein the electrochemical active material comprises a layered potassium metal oxide of the formula Na z K x M y Mn 1-y O 2 , where x and z are as defined in item 17, y is a numerical value such as 0 ≤ y ≤ 1.0, and M is selected from Co, Fe, Ni, Ti, Cr, V, Cu, Zr, Sb, and at least two combinations thereof. (Item 19) The electrode material described in item 17 or 18, wherein the layered potassium metal oxide is of the formula Na z K x Ni y Mn 1-y O 2 , where x and z are as defined in item 17, and y is a numerical value such as 0 ≤ y ≤ 1.0. (Item 20) The electrode material accordi