Inter-cell connection materials
Batteries according to embodiments of the present technology may include a first battery cell including a first current collector. The batteries may include a second battery cell including a second current collector. The second battery cell may be vertically aligned with the first battery cell, and the second current collector may be positioned adjacent the first current collector. The first battery cell and the second battery cell may be electrically coupled together so the first battery cell and the second battery cell transfer current through the cells between the first current collector and the second current collector. The batteries may also include a patterned coupling material disposed between the first battery cell and the second battery cell and joining the first current collector with the second current collector.
1. A battery comprising:
a first battery cell comprising a first current collector and a third current collector, wherein an electrode active material is disposed along a first surface of the first current collector;
a second battery cell comprising a second current collector and a fourth current collector, wherein the second battery cell is vertically aligned with the first battery cell, wherein the second current collector is positioned adjacent the first current collector, wherein the first battery cell and the second battery cell are electrically coupled together so the first battery cell and the second battery cell transfer current through the cells between the first current collector and the second current collector; and
a patterned coupling material disposed between the first battery cell and the second battery cell and joining the first current collector with the second current collector, wherein the patterned coupling material is disposed along a second surface of the first current collector opposite the first surface, wherein a location across the first current collector includes the electrode active material on the first surface of the first current collector and the patterned coupling material on the second surface of the first current collector, wherein the patterned coupling material comprises a metal-containing material characterized by a melting temperature below about 100° C.
2. The battery of claim 1 , wherein the metal-containing material comprises a tin alloy.
3. The battery of claim 1 , wherein the metal-containing material forms a conductive bond between the first current collector and the second current collector.
4. The battery of claim 1 , wherein the patterned coupling material is characterized by a Young's modulus greater than or about 1,000 MPa.
5. A battery comprising:
a first battery cell comprising:
a first current collector coupled with a cathode active material, and
a second current collector coupled with an anode active material along a first surface of the second current collector;
a second battery cell comprising:
a third current collector coupled with a cathode active material, and
a fourth current collector coupled with an anode active material, wherein the second battery cell is vertically aligned with the first battery cell, wherein the third current collector is positioned against the second current collector, wherein the first battery cell and the second battery cell are electrically coupled together so the first battery cell and the second battery cell transfer current through the cells between the second current collector and the third current collector; and
a patterned coupling material disposed between the first battery cell and the second battery cell and joining the third current collector with the second current collector along a second surface of the second current collector opposite the first surface, wherein at least one vertical position along the second current collector includes the anode active material on the first surface of the second current collector and the patterned coupling material on the second surface of the second current collector, and wherein the patterned coupling material comprises a metal-containing material characterized by a melting temperature below about 100° C.
6. The battery of claim 5 , wherein the metal-containing material comprises a tin alloy.
7. The battery of claim 5 , wherein the metal-containing material forms a conductive bond between the third current collector and the second current collector.
8. A battery comprising:
a first battery cell comprising:
a first current collector,
a separator, and
a second current collector;
a second battery cell comprising:
a third current collector,
a separator, and
a fourth current collector, wherein the second battery cell is vertically aligned with the first battery cell, wherein the third current collector is positioned against the second current collector, wherein the first battery cell and the second battery cell are electrically coupled together so the first battery cell and the second battery cell transfer current through the cells between the second current collector and the third current collector; and
a patterned coupling material disposed between the first battery cell and the second battery cell and joining the third current collector with the second current collector along an interior region of the first battery cell and the second battery cell, wherein the interior region extends across a midpoint of the second current collector, and wherein the patterned coupling material comprises a metal-containing material characterized by a melting temperature below about 100° C.