Channing C Ahn

7537682, May 26, 2009

Mar 16, 2005

11/081841

Anne Dailly - Pasadena CA, US
Channing Ahn - Pasadena CA, US
Rachid Yazami - Los Angeles CA, US
Brent T. Fultz - Pasadena CA, US

California Institute of Technology - Pasadena CA
Centre National de la Recherche Scientifique - Paris

C01B 31/02

205555, 423460, 423461

Methods of purifying samples are provided that are capable of removing carbonaceous and noncarbonaceous impurities from a sample containing a carbon material having a selected structure. Purification methods are provided for removing residual metal catalyst particles enclosed in multilayer carbonaceous impurities in samples generate by catalytic synthesis methods. Purification methods are provided wherein carbonaceous impurities in a sample are at least partially exfoliated, thereby facilitating subsequent removal of carbonaceous and noncarbonaceous impurities from the sample. Methods of purifying carbon nanotube-containing samples are provided wherein an intercalant is added to the sample and subsequently reacted with an exfoliation initiator to achieve exfoliation of carbonaceous impurities.

7781102, Aug 24, 2010

Apr 22, 2004

10/829598

Jason A. Graetz - Upton NY, US
Brent T. Fultz - Pasadena CA, US
Channing Ahn - Pasadena CA, US
Rachid Yazami - Los Angeles CA, US

California Institute of Technology - Pasadena CA
Centre National de la Recherche Scientifique (C.N.R.S.) - Paris

H01M 4/36
H01M 6/18
H01M 4/00

429226, 429128, 429322

Electrodes comprising an alkali metal, for example, lithium, alloyed with nanostructured materials of formula SiGe, where 0

20040126659, Jul 1, 2004

Sep 10, 2003

10/660382

Jason Graetz - Upton NY, US
Brent Fultz - Pasadena CA, US
Channing Ahn - Pasadena CA, US
Rachid Yazami - Los Angeles CA, US

H01M004/40
H01M004/58

429/218100, 429/231950

Electrodes comprising lithium alloyed with nanostructured silicon materials exhibit improved capacities, cycle lives, and/or cycling rates compared with similar electrodes made from bulk silicon. The electrodes do not require a conductive diluent such as carbon black. These electrodes are useful as anodes for secondary electrochemical cells, for example, batteries and electrochemical supercapacitors.

20100074832, Mar 25, 2010

May 5, 2009

12/435877

Anne Dailly - Pasadena CA, US
Channing Ahn - Pasadena CA, US
Rachid Yazami - Los Angeles CA, US
Brent T. Fultz - Pasadena CA, US

California Institute of Technology - Pasadena CA
Centre National De La Recherche Scientifique - Paris

D01F 9/12

4234471, 977742, 977845

Methods of purifying samples are provided that are capable of removing carbonaceous and noncarbonaceous impurities from a sample containing a carbon material having a selected structure. Purification methods are provided for removing residual metal catalyst particles enclosed in multilayer carbonaceous impurities in samples generate by catalytic synthesis methods. Purification methods are provided wherein carbonaceous impurities in a sample are at least partially exfoliated, thereby facilitating subsequent removal of carbonaceous and noncarbonaceous impurities from the sample. Methods of purifying carbon nanotube-containing samples are provided wherein an intercalant is added to the sample and subsequently reacted with an exfoliation initiator to achieve exfoliation of carbonaceous impurities.

51480255, Sep 15, 1992

Jan 18, 1991

7/643523

Channing C. Ahn - Pasadena CA
Harry A. Atwater - Pasadena CA

H01J 4700
H01J 3700

250305

The composition of material being grown by vapor deposition may be analyzed in situ by applying a beam of electrons, from a source such as a RHEED gun, incident at a low angle to the material being grown. The energy levels in the reflected beam may be analyzed by spectroscopy to qualitatively and quantitatively the presence and absence of elements, as well as their ratio, by analysis of the number of electrons at energy levels related to core level transitions representative of specific materials. Such compositional analysis may be used in real time to control the deposition growth process.

20140113811, Apr 24, 2014

Oct 10, 2013

14/050755

Nicholas P. STADIE - Pasadena CA, US
Brent T. FULTZ - Pasadena CA, US
Channing AHN - Pasadena CA, US
Maxwell MURIALDO - Westminster CA, US

C07C 9/04
C07C 29/76
C07C 17/389
C07C 51/42

502400, 585 2, 562512, 568917, 570262, 568840, 570181, 4236481, 423481, 423483, 423294, 423293, 423292, 423579, 423581, 4234371, 4234182, 423351, 423368, 423400, 423262, 423347, 423443

Provided are methods for storing gases on porous adsorbents, methods for optimizing the storage of gases on porous adsorbents, methods of making porous adsorbents, and methods of gas storage of optimized compositions, as in systems containing porous adsorbents and gas adsorbed on the surface of the porous adsorbent. The disclosed methods and systems feature a constant or increasing isosteric enthalpy of adsorption as a function of uptake of the gas onto the exposed surface of a porous adsorbent. Adsorbents with a porous geometry and surface dimensions suited to a particular adsorbate are exposed to the gas at elevated pressures in the specific regime where n/V (density) is larger than predicted by the ideal gas law by more than several percent.