MAGNESIUM HYBRID BATTERY AND ITS FABRICATION METHOD

• US 20140349177A1
• Filed: 09/03/2013
• Published: 11/27/2014
• Est. Priority Date: 05/24/2013
• Status: Abandoned Application

• Current Assignee: Korea Advanced Institute of Science and Technology
• Original Assignee: Korea Advanced Institute of Science and Technology
• Inventors: CHUNG, Kyung Yoon, CHO, Byung Won, LEE, Joong Kee, KIM, Hyung Sun, CHO, Jae Hyun, CHANG, Won Young, LEE, Hwa Young
• Application Number:
  US14/016,549
• Publication Number:
  US 20140349177A1
• Time in Patent Office: Days
• US Class Current: 429/200
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/054 Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
• CPC Class Codes: H01M 10/0568 characterised by the solutes
• CPC Class Codes: H01M 10/058 Construction or manufacture
• CPC Class Codes: H01M 2300/0025 Organic electrolyte
• CPC Class Codes: H01M 4/381 Alkaline or alkaline earth metals elements H01M4/40 takes precedence
• CPC Class Codes: H01M 4/466 Magnesium based
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y10T 29/49108 Electric battery cell making

Abstract

The present disclosure relates to a magnesium hybrid battery and a method for fabricating same. The magnesium hybrid battery according to the present disclosure, which includes magnesium or magnesium alloy metal as an anode, a cathode including a cathode active material wherein not only magnesium ion but also one or more ion selected from lithium ion and sodium ion can be intercalated and deintercalated and an electrolyte including magnesium ion and further including one or more ion selected from lithium ion and sodium, can overcome the limitation of the existing magnesium secondary battery and provide improved battery capacity, output characteristics, cycle life, safety, etc.

Claims

1. A magnesium hybrid battery comprising (1) an anode, (2) a cathode and (3) an electrolyte,

wherein

the anode is a magnesium or magnesium alloy metal;

the cathode comprises a cathode active material wherein one or more ion selected from magnesium ion, lithium ion and sodium ion can be intercalated and deintercalated;

the electrolyte comprises magnesium ion; and

the electrolyte further comprises one or more ion selected from lithium ion and sodium ion.

2. The magnesium hybrid battery according to claim 1, wherein the cathode active material is one or more material selected from Mo₆S₈, MoS₂, Mg_xVPO₅F_0.5, Li_1-a1FePO₄, Li_1-a1Fe_xMn_yPO₄, Li_3-a3V₂(PO₄)₃, Li_1-a1VPO₄F, Li_1-a1CoO₂, Li_1-a1Ni_0.8Co_0.2O₂, Li_1-a1Ni_xCo_yMn_zO₂, Li_1-a1Mn₂O₄, Li_1-a1Ni_0.5Mn_1.5O₄, Li_2-a2FeSiO₄, Li_2-a2Fe_xMn_ySiO₄, V₂O₅, S, Na_2-b2FePO₄F, Na_2-b2FeP₂O₇, Na_1-b1Ni_xCo_yMn_zO₂, Na_1-b1VPO₄F, Na_1.5-b1.5VOPO₄F_0.5 and Na_3-b3V₂(PO₄)₃,

wherein

a1 is a real number satisfying 0<

a1<

1;

a2 is a real number satisfying 0<

a2<

2;

a3 is a real number satisfying 0<

a3<

3;

b1 is a real number satisfying 0<

b1<

1;

b1.5 is a real number satisfying 0<

b1.5<

1.5;

b2 is a real number satisfying 0<

b2<

2;

b3 is a real number satisfying 0<

b3<

3;

x is a real number satisfying 0<

x<

1;

y is a real number satisfying 0<

y<

1; and

z is a real number satisfying 0<

z<

1.

3. The magnesium hybrid battery according to claim 1,

wherein

the magnesium ion included in the electrolyte is dissociated from one or more magnesium compound selected from ethylmagnesium bromide (EtMgBr), ethylmagnesium chloride (EtMgCl), all-ethyl complex (AEC, EtMgCl-(EtAlCl₂)₂ complex), all-phenyl complex (APC, PhMgCl-AlCl₃ complex), Mg(ClO₄)₂ and Mg(TFSI)₂;

the lithium ion included in the electrolyte is dissociated from one or more lithium compound selected from LiCl, LiClO₄ and Li(TFSI); and

the sodium ion included in the electrolyte is dissociated from one or more sodium compound selected from NaCl, NaClO₄ and Na(TFSI).

4. A method for fabricating a magnesium hybrid battery comprising (1) an anode, (2) a cathode and (3) an electrolyte, the method comprising:

(a) obtaining an assembled structure by assembling an anode and a cathode with a separator membrane therebetween; and

(b) injecting an electrolyte into the assembled structure;

wherein

the anode comprises magnesium or magnesium alloy metal foil;

the cathode comprises a cathode active material wherein one or more ion selected from magnesium ion, lithium ion and sodium ion can be intercalated and deintercalated;

the electrolyte comprises magnesium ion; and

the electrolyte further comprises one or more ion selected from lithium ion and sodium ion.

5. The method for fabricating a magnesium hybrid battery according to claim 4, wherein the cathode active material is one or more material selected from Mo₆S₈, MoS₂, Mg_xVPO₅F_0.5, Li_1-a1FePO₄, Li_1-a1Fe_xMn_yPO₄, Li_3-a3V₂(PO₄)₃, Li_1-a1VPO₄F, Li_1-a1CoO₂, Li_1-a1Ni_0.8Co_0.2O₂, Li_1-a1Ni_xCo_yMn_zO₂, Li_1-a1Mn₂O₄, Li_1-a1Ni_0.5Mn_1.5O₄, Li_2-a2FeSiO₄, Li_2-a2Fe_xMn_ySiO₄, V₂O₅, S, Na_2-b2FePO₄F, Na_2-b2FeP₂O₇, Na_1-b1Ni_xCo_yMn_zO₂, Na_1-b1VPO₄F, Na_1.5-b1.5VOPO₄F_0.5 and Na_3-b3V₂(PO₄)₃,

wherein

a1 is a real number satisfying 0<

a1<

1;

a2 is a real number satisfying 0<

a2<

2;

a3 is a real number satisfying 0<

a3<

3;

b1 is a real number satisfying 0<

b1<

1;

b1.5 is a real number satisfying 0<

b1.5<

1.5;

b2 is a real number satisfying 0<

b2<

2;

b3 is a real number satisfying 0<

b3<

3;

x is a real number satisfying 0<

x<

1;

y is a real number satisfying 0<

y<

1; and

z is a real number satisfying 0<

z<

1.

6. The method for fabricating a magnesium hybrid battery according to claim 4,

wherein

the magnesium ion included in the electrolyte is dissociated from one or more magnesium compound selected from ethylmagnesium bromide (EtMgBr), ethylmagnesium chloride (EtMgCl), all-ethyl complex (AEC, EtMgCl-(EtAlCl₂)₂ complex), all-phenyl complex (APC, PhMgCl-AlCl₃ complex), Mg(ClO₄)₂ and Mg(TFSI)₂;

the lithium ion included in the electrolyte is dissociated from one or more lithium compound selected from LiCl, LiClO₄ and Li(TFSI); and

the sodium ion included in the electrolyte is dissociated from one or more sodium compound selected from NaCl, NaClO₄ and Na(TFSI).

7. The method for fabricating a magnesium hybrid battery according to claim 4, wherein an organic solvent used to dissolve the magnesium ion, the lithium ion and the sodium ion, which may be identical or different, is independently one or more selected from tetrahydrofuran (THF), dimethoxyethane (DME), diglyme, triglyme, tetraglyme, acetonitrile and an ionic liquid.

8. The method for fabricating a magnesium hybrid battery according to claim 7, wherein the ionic liquid comprises one or more cation selected from pyrrolidinium, imidazolium, piperidinium, pyridinium, ammonium and morpholinium.