Cheng-Chieh Chao

US Patent:

8551868, Oct 8, 2013

Filed:

Mar 24, 2011

Appl. No.:

13/065582

Inventors:

Timothy P. Holme - Menlo Park CA, US
Andrei Iancu - Stanford CA, US
Hee Joon Jung - Palo Alto CA, US
Michael C Langston - Los Altos Hills CA, US
Munekazu Motoyama - Kumamoto, JP
Friedrich B. Prinz - Woodside CA, US
Takane Usui - Palo Alto CA, US
Hitoshi Iwadate - Palo Alto CA, US
Neil Dasgupta - San Francisco CA, US
Cheng-Chieh Chao - Mountain View CA, US

Assignee:

The Board of Trustees of the Leland Stanford Junior Universit - Palo Alto CA
Honda Patents & Technologies North America, LLC - Raymond OH

International Classification:

H01L 21/36

US Classification:

438478, 438487, 257 9, 257 14, 257E33008, 257E29069, 257E21089, 977755, 977762, 977773, 977774

Abstract:

A method of fabricating quantum confinements is provided. The method includes depositing, using a deposition apparatus, a material layer on a substrate, where the depositing includes irradiating the layer, before a cycle, during a cycle, and/or after a cycle of the deposition to alter nucleation of quantum confinements in the material layer to control a size and/or a shape of the quantum confinements. The quantum confinements can include quantum wells, nanowires, or quantum dots. The irradiation can be in-situ or ex-situ with respect to the deposition apparatus. The irradiation can include irradiation by photons, electrons, or ions. The deposition is can include atomic layer deposition, chemical vapor deposition, MOCVD, molecular beam epitaxy, evaporation, sputtering, or pulsed-laser deposition.

US Patent:

20090011314, Jan 8, 2009

Filed:

Jul 3, 2008

Appl. No.:

12/217503

Inventors:

Cheng-Chieh Chao - Palo Alto CA, US
Timothy P. Holme - Stanford CA, US
Friedrich B. Prinz - Woodside CA, US
Masayuki Sugawara - Palo Alto CA, US

International Classification:

H01M 8/10

US Classification:

429 30

Abstract:

A solid oxide fuel cell (SOFC) with reduced electrical resistance and greater vacancy density control is provided. The SOFC includes an interfacial layer deposited, preferably by atomic layer deposition (ALD), between an electrode layer and an electrolyte layer. The interfacial layer includes an ion-conductive material. By use of ALD, the interfacial layer can have a very small thickness and can include layered structures of alternating materials. The interfacial layer can also include doping gradient structures of doped ion-conductive materials. Ultra-thin film platinum layers for high current density and cermet layers at the electrode/electrolyte interface are also provided.

US Patent:

20100183948, Jul 22, 2010

Filed:

Dec 7, 2009

Appl. No.:

12/653111

Inventors:

Cheng-Chieh Chao - Stanford CA, US
Turgut M. Gür - Palo Alto CA, US
Munekazu Motoyama - Kumamoto, JP
Friedrich B. Prinz - Woodside CA, US
Joon Hyung Shim - Cupertino CA, US
Joong Sun Park - Stanford CA, US

International Classification:

H01M 8/10

US Classification:

429495

Abstract:

The present invention provides solid oxide fuel cell that includes an electrolyte membrane, a first electrode layer, and a second electrode layer, where the electrolyte membrane is disposed between the first electrode layer and the second electrode layer. The electrolyte membrane includes a solid electrolyte structure having at least two solid electrolyte nanoscopic closed-end tubes, where an open-ended base of each solid electrolyte nanoscopic closed-end tube is connected by a solid electrolyte layer.

US Patent:

20110027694, Feb 3, 2011

Filed:

Jul 26, 2010

Appl. No.:

12/804705

Inventors:

Cheng-Chieh Chao - Stanford CA, US
Friedrich B. Prinz - Woodside CA, US
Turgut M. Gür - Palo Alto CA, US
Joon Hyung Shim - Seoul, KR

International Classification:

H01M 8/10

US Classification:

429496, 429495

Abstract:

A solid oxide fuel cell with an electrolyte membrane having one or more layers with interfaces perpendicular to the surfaces of the membrane is provided. The layers can be deposited on vertical walls of holes in a nanoporous membrane until the layers fully fill the holes, thereby forming superlattices in the holes. The final shape of the superlattices in this example will be concentric, laminating layers as seen in a top view looking down on the membrane. According to one aspect, conventional electrodes can be deposited on both sides of the membrane for current collection and surface charge transfer reactions.

US Patent:

20110076589, Mar 31, 2011

Filed:

Sep 14, 2010

Appl. No.:

12/807777

Inventors:

Cheng-Chieh Chao - Stanford CA, US
Yi Cui - Stanford CA, US
Ching-Mei Hsu - Stanford CA, US
Young Beom Kim - Stanford CA, US
Friedrich B. Prinz - Woodside CA, US

International Classification:

H01M 8/10

US Classification:

429480

Abstract:

A nano-patterned membrane electrode assembly (MEA) is provided, which includes an electrolyte membrane layer having a three-dimensional close-packed array of hexagonal-pyramids, a first porous electrode layer, disposed on a top surface of the electrolyte membrane layer that conforms to a top surface-shape of the three-dimensional close-packed array of hexagonal-pyramids, and a second porous electrode layer disposed on a bottom surface of said electrolyte membrane layer that conforms to a bottom surface-shape of the three-dimensional close-packed array of hexagonal-pyramids, where a freestanding nano-patterned MEA is provided.

US Patent:

20220328867, Oct 13, 2022

Filed:

Mar 30, 2022

Appl. No.:

17/709393

Inventors:

- San Jose CA, US
Cheng-Chieh CHAO - San Jose CA, US
Lei CHENG - San Jose CA, US
Niall DONNELLY - Malvern PA, US
William H. GARDNER - Concord MA, US
Tim HOLME - Mountain View CA, US
Will HUDSON - Belmont CA, US
Sriram IYER - Cupertino CA, US
Oleh KARPENKO - San Jose CA, US
Yang LI - San Jose CA, US
Gengfu XU - Santa Clara CA, US

International Classification:

H01M 10/0562
C01G 25/00
H01M 10/0525

Abstract:

The instant disclosure sets forth multiphase lithium-stuffed garnet electrolytes having secondary phase inclusions, where-in these secondary phase inclusions are material(s) which is/are not a cubic phase lithium-stuffed garnet but which is/are entrapped or enclosed within a lithium-stuffed garnet. When the secondary phase inclusions described herein are included in a lithium-stuffed garnet at 30-0.1 volume %, the inclusions stabilize the multiphase matrix and allow for improved sintering of the lithium-stuffed garnet. The electrolytes described herein, which include lithium-stuffed garnet with secondary phase inclusions, have an improved sinterability and density compared to phase pure cubic lithium-stuffed garnet having the formula LiLaZrO.

US Patent:

20220190382, Jun 16, 2022

Filed:

Sep 28, 2021

Appl. No.:

17/488187

Inventors:

- San Jose CA, US
Cheng-Chieh CHAO - San Jose CA, US
Lei CHENG - San Jose CA, US
Niall DONNELLY - St. Paul MN, US
William H. GARDNER - Concord MA, US
Tim HOLME - Mountain View CA, US
Sriram IYER - Cupertino CA, US
Shuang LI - Sunnyvale CA, US

International Classification:

H01M 10/0562
H01M 10/052
H01M 10/056
H01M 10/058
C04B 35/488
C04B 35/622
H01M 50/403
H01M 50/409
H01M 10/0565

Abstract:

Set forth herein are pellets, thin films, and monoliths of lithium-stuffed garnet electrolytes having engineered surfaces. These engineered surfaces have a list of advantageous properties including, but not limited to, low surface area resistance, high Li ion conductivity, low tendency for lithium dendrites to form within or thereupon when the electrolytes are used in an electrochemical cell. Other advantages include voltage stability and long cycle life when used in electrochemical cells as a separator or a membrane between the positive and negative electrodes. Also set forth herein are methods of making these electrolytes including, but not limited to, methods of annealing these electrolytes under controlled atmosphere conditions. Set forth herein, additionally, are methods of using these electrolytes in electrochemical cells and devices. The instant disclosure further includes electrochemical cells which incorporate the lithium-stuffed garnet electrolytes set forth herein.

US Patent:

20230050593, Feb 16, 2023

Filed:

Oct 6, 2022

Appl. No.:

17/961195

Inventors:

- San Jose CA, US
Cheng-Chieh CHAO - San Jose CA, US
Lei CHENG - San Jose CA, US
Niall DONNELLY - Malvern PA, US
William H. GARDNER - Concord MA, US
Tim HOLME - Mountain View CA, US
Will HUDSON - Belmont CA, US
Sriram IYER - Cupertino CA, US
Oleh KARPENKO - San Jose CA, US
Yang LI - San Jose CA, US
Gengfu XU - Santa Clara CA, US

International Classification:

H01M 10/0562
C01G 25/00
H01M 10/0525

Abstract:

The instant disclosure sets forth multiphase lithium-stuffed garnet electrolytes having secondary phase inclusions, wherein these secondary phase inclusions are material(s) which is/are not a cubic phase lithium-stuffed garnet but which is/are entrapped or enclosed within a lithium-stuffed garnet. When the secondary phase inclusions described herein are included in a lithium-stuffed garnet at 30-0.1 volume %, the inclusions stabilize the multiphase matrix and allow for improved sintering of the lithium-stuffed garnet. The electrolytes described herein, which include lithium-stuffed garnet with secondary phase inclusions, have an improved sinterability and density compared to phase pure cubic lithium-stuffed garnet having the formula LiLaZrO.