Semi-solid electrodes having high rate capability
First Claim
1. An electrochemical cell, comprising:
- an anode;
a semi-solid cathode including a suspension of about 35% to about 75% by volume of an active material and about 1% to about 8% by volume of a conductive material in a non-aqueous liquid electrolyte; and
an ion-permeable membrane disposed between the anode and the semi-solid cathode,wherein, the semi-solid cathode has a thickness in the range of about 250 μ
m to about 2,000 μ
m,wherein the electrochemical cell has an area specific capacity of at least 7 mAh/cm2 at a C-rate of C/4, andwherein the semi-solid cathode has a mixing index in the range of about 0.8 to 0.975.
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Accused Products
Abstract
Embodiments described herein relate generally to electrochemical cells having high rate capability, and more particularly to devices, systems and methods of producing high capacity and high rate capability batteries having relatively thick semi-solid electrodes. In some embodiments, an electrochemical cell includes an anode, a semi-solid cathode that includes a suspension of an active material and a conductive material in a liquid electrolyte, and an ion permeable membrane disposed between the anode and the cathode. The semi-solid cathode has a thickness in the range of about 250 μm-2,500 μm, and the electrochemical cell has an area specific capacity of at least 5 mAh/cm2 at a C-rate of C/2.
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Citations
30 Claims
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1. An electrochemical cell, comprising:
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an anode; a semi-solid cathode including a suspension of about 35% to about 75% by volume of an active material and about 1% to about 8% by volume of a conductive material in a non-aqueous liquid electrolyte; and an ion-permeable membrane disposed between the anode and the semi-solid cathode, wherein, the semi-solid cathode has a thickness in the range of about 250 μ
m to about 2,000 μ
m,wherein the electrochemical cell has an area specific capacity of at least 7 mAh/cm2 at a C-rate of C/4, and wherein the semi-solid cathode has a mixing index in the range of about 0.8 to 0.975. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An electrochemical cell, comprising:
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a semi-solid anode including a suspension of about 40% to about 75% by volume of a first active material and about 0% to about 10% by volume of a first conductive material in a first non-aqueous liquid electrolyte; a semi-solid cathode including a suspension of about 35% to about 75% by volume of a second active material and about 1% to about 8% by volume of a second conductive material in a second non-aqueous liquid electrolyte; and an ion-permeable membrane disposed between the semi-solid anode and the semi-solid cathode, wherein, the semi-solid anode and the semi-solid cathode each have a thickness in the range of about 250 μ
m to about 2,000 μ
m,wherein the electrochemical cell has an area specific capacity of at least 7 mAh/cm2 at a C-rate of C/4, and wherein the semi-solid anode and the semi-solid cathode each have a mixing index in the range of about 0.8 to 0.975. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An electrochemical cell comprising:
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an anode; a semi-solid cathode including a suspension of about 35% to about 75% by volume of an active material and about 1% to about 8% by volume of a conductive material in a non-aqueous liquid electrolyte; and an ion-permeable membrane disposed between the anode and the semi-solid cathode, wherein, the semi-solid cathode has a thickness in the range of about 250 μ
m to about 2,000 μ
m,wherein the electrochemical cell has an area specific capacity of at least 7 mAh/cm2 at a C-rate of C/2, and wherein the semi-solid cathode has a mixing index in the range of about 0.8 to 0.975. - View Dependent Claims (17, 18, 19, 20, 21)
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22. An electrochemical cell, comprising:
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a semi-solid anode including a suspension of about 40% to about 75% by volume of a first active material and about 0% to about 10% by volume of a first conductive material in a first non-aqueous liquid electrolyte; a semi-solid cathode including a suspension of about 35% to about 75% by volume of a second active material and about 1% to about 8% by volume of a second conductive material in a second non-aqueous liquid electrolyte; and an ion-permeable membrane disposed between the semi-solid anode and the semi-solid cathode, wherein, the semi-solid anode and the semi-solid cathode each have a thickness in the range of about 250 μ
m to about 2,000 μ
m,wherein the electrochemical cell has an area specific capacity of at least 7 mAh/cm2 at a C-rate of C/2, and wherein the semi-solid anode and the semi-solid cathode each have a mixing index in the range of about 0.8 to 0.975. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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Specification