Christine H Ho

US Patent:

20130105193, May 2, 2013

Filed:

Oct 25, 2012

Appl. No.:

13/660783

Inventors:

The Regents of the University of California - Oakland CA, US
Christine Ho - Fremont CA, US
Alejandro de la Fuente Vornbrock - San Carlos CA, US
David Garmire - Honolulu HI, US

Assignee:

THE REGENTS OF THE UNIVERSITY OF CALIFORNIA - Oakland CA

International Classification:

H01B 7/04

US Classification:

174 681

Abstract:

A flexible, moldable material is provided with bi-conductive surfaces that can be fabricated using simple, cost-effective, and scalable deposition processes. The material is a composite structure composed of two conductive or semi-conductive sheets sandwiching a thin polymer insulator, all bonded together at their interfaces. The two functionalized sheets are made of conductive or semi-conductive particles dispersed through a flexible polymer. In one embodiment, a protective coating over the outer conductive sheets is applied to improve the durability of the composite structure. The material can be patterned into custom shapes and patterns with sizes ranging from meso-scale (millimeters) to macro-scale (meters) dimensions. The thicknesses of the components can also be tailored to be thin, such as a few hundred microns, yet the material maintains very good durability.

US Patent:

20130280579, Oct 24, 2013

Filed:

Mar 5, 2013

Appl. No.:

13/784935

Inventors:

Christine Ho - Fremont CA, US

International Classification:

H01M 10/0565
H01G 9/035
H01G 9/145
H01M 6/40

US Classification:

429124, 429188, 429303, 429302, 429300, 361505, 252 622

Abstract:

An electrochemical cell includes solid-state, printable anode layer, cathode layer and non-aqueous gel electrolyte layer coupled to the anode layer and cathode layer. The electrolyte layer provides physical separation between the anode layer and the cathode layer, and comprises a composition configured to provide ionic communication between the anode layer and cathode layer by facilitating transmission of multivalent ions between the anode layer and the cathode layer.

US Patent:

20140059820, Mar 6, 2014

Filed:

Aug 16, 2013

Appl. No.:

13/968603

Inventors:

Christine Ho - Fremont CA, US

Assignee:

IMPRINT ENERGY, INC. - Alameda CA
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA - Oakland CA

International Classification:

H01G 9/00
H01G 9/145
H01M 10/0565
H01M 10/058

US Classification:

29 2503, 296231, 296235

Abstract:

An electrochemical cell includes solid-state, printable anode layer, cathode layer and non-aqueous gel electrolyte layer coupled to the anode layer and cathode layer. The electrolyte layer provides physical separation between the anode layer and the cathode layer, and comprises a composition configured to provide ionic communication between the anode layer and cathode layer by facilitating transmission of multivalent ions between the anode layer and the cathode layer.

US Patent:

20070213044, Sep 13, 2007

Filed:

Mar 1, 2007

Appl. No.:

11/713464

Inventors:

Daniel Steingart - Berkeley CA, US
Andrew Redfern - Berkeley CA, US
Christine Ho - Berkeley CA, US
Chris Kumai - Berkeley CA, US
James Evans - Piedmont CA, US

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

H04M 1/00

US Classification:

455423000, 455553100

Abstract:

In one embodiment, a wireless measurement device is provided. A wireless transceiver is configured to communicate with a base station through a wireless medium to receive configuration information. The wireless transceiver outputs a signal for use in measuring a potential or current based on the configuration information. A circuit is configured to function as a galvanostat and can receive the signal and achieve a desired current using the signal. A potential of a test cell is then measurable using the current. Also, the circuit is configured to function as a potentiostat and can achieve a desired potential using the signal. The current of the test cell is then measurable using the potential. The wireless transceiver transmits the measured potential or current wirelessly to a second wireless transceiver.

US Patent:

20220416306, Dec 29, 2022

Filed:

Jun 29, 2022

Appl. No.:

17/809832

Inventors:

- Alameda CA, US
Chaojun Shi - Fremont CA, US
Christine Ho - Fremont CA, US
Jesse Smithyman - Oakland CA, US
Alex Gurr - Oakland CA, US
Danny Hellebusch - Oakland CA, US
Ehsan Faegh - Alameda CA, US
Albert Aumentado - San Pablo CA, US
Pavel Khokhlov - San Ramon CA, US

Assignee:

Imprint Energy, Inc. - Alameda CA

International Classification:

H01M 10/0585
H01M 50/30
H01M 4/66
H01M 10/0568
H01M 50/403
H01M 50/446
H01M 50/431
H01M 50/10
H01M 4/04

Abstract:

Provided are printed electrochemical cells, which utilize zinc salts for ionic transfer, and methods of fabricating such cells. In some examples, a printed electrochemical cell comprises a positive electrode with a positive current collector having a two-dimensional shape and comprising an electrolyte-facing surface formed by the graphite. For example, the positive current collector may be a graphite foil or an aluminum foil with a graphite coating. The cell also comprises electrolyte comprising an electrolyte salt and an electrolyte solvent. For example, the electrolyte salt comprises a zinc salt with a concentration of at least 30% by weight in the electrolyte. The cell is fabricated by printing a positive active material layer over the positive current collector, printing one or more electrolyte layers on various cell components, and laminating a separator layer between the positive and negative electrodes while soaking the separator layer with the electrolyte.

US Patent:

20220384771, Dec 1, 2022

Filed:

Aug 12, 2022

Appl. No.:

17/819453

Inventors:

- Alameda CA, US
Konstantin Tikhonov - Pleasanton CA, US
Christine Ho - Fremont CA, US
Alexander Gurr - Berkeley CA, US

Assignee:

Imprint Energy, Inc. - Alameda CA

International Classification:

H01M 4/04
H01M 10/04
H01M 10/42

Abstract:

Provided are electronic circuits, comprising electrochemical cells directly integrated with other devices of the circuits, and methods of manufacturing these circuits. The direct integration occurs during cell manufacturing, which allows sharing components, reducing operation steps and failure points, and reducing cost and size of the circuits. For example, a portion of a cell enclosure may be formed by a circuit board, providing direct mechanical integration. More specifically, the cell is fabricated right on the circuit board. In the same or other examples, one or both cell current collectors extend outside of the cell boundary and used by other devices, providing direct electrical integration without a need for intermediate connections and eliminating additional failure points. Furthermore, printing one or more components of electrochemical cells, such as electrolytes and current collectors, allows achieving higher levels of mechanical and electrical integration that are generally not available in conventional cells.

US Patent:

20210091411, Mar 25, 2021

Filed:

Sep 28, 2020

Appl. No.:

17/035101

Inventors:

- Oakland CA, US
- Alameda CA, US
Christine Ho - Fremont CA, US

Assignee:

THE REGENTS OF THE UNIVERSITY OF CALIFORNIA - Oakland CA
IMPRINT ENERGY, INC. - Alameda CA

International Classification:

H01M 10/0565
H01B 1/12
H01M 10/04
H01M 10/054
H01G 11/56
H01G 9/035
H01G 9/145
H01M 6/40
H01G 9/00
H01M 10/058
H01G 9/028
H01G 9/042
H01G 9/15
H01G 11/46
H01G 11/86
H01M 4/38
H01M 4/48
H01M 4/50
H01M 4/52
H01M 4/56
H01M 4/66

Abstract:

An electrochemical cell includes solid-state, printable anode layer, cathode layer and non-aqueous gel electrolyte layer coupled to the anode layer and cathode layer. The electrolyte layer provides physical separation between the anode layer and the cathode layer, and comprises a composition configured to provide ionic communication between the anode layer and cathode layer by facilitating transmission of multivalent ions between the anode layer and the cathode layer.

US Patent:

20200411866, Dec 31, 2020

Filed:

Sep 16, 2020

Appl. No.:

17/022778

Inventors:

- Alameda CA, US
Christine Chihfan Ho - Fremont CA, US
Karthik Yogeeswaran - San Francisco CA, US
Po-Jen Cheng - El Cerrito CA, US

Assignee:

Imprint Energy, Inc. - Alameda CA

International Classification:

H01M 4/62
H01M 10/0567
H01M 10/052
H01M 4/06
H01M 6/40
H01M 12/06
H01M 10/0568
H01M 4/13
H01M 4/04
H01M 4/131
H01M 4/134
H01M 4/1391
H01M 4/1395
H01M 4/42
H01M 4/50
H01M 10/054
H01M 10/0565
H01M 10/0585

Abstract:

An electrical or electrochemical cell, c a cathode layer, an electrolyte layer, and an anode layer is disclosed. The cathode layer includes a first material providing a cathodic electric transport, charge storage or redox function. The electrolyte layer includes a polymer, a first electrolyte salt, and/or an ionic liquid. The anode layer includes a second material providing an anodic electric transport, charge storage or redox function. At least one of the cathode and anode layers includes the ionic liquid, a second electrolyte salt, and/or a transport-enhancing additive.