Title: Mesoporous silicon synthesis and applications in Li-ion batteries and solar hydrogen fuel cells

Abstract

We provide a mesoporous silicon material (PSi) prepared via a template-free and HF-free process. The production process is facile and scalable, and it may be conducted under mild reaction conditions. The silicon may be produced directly by the reduction of a silicon-halogenide precursor (for example, SiCl.sub.4) with an alkaline alloy (for example, NaK alloy). The resulting Si-salt matrix is then annealed for the pore formation and crystallite growth. Final product is obtained by removal of the salt by-products with water.

Inventors:

Wang, Donghai; Dai, Fang; Yi, Ran; Zai, Jianto

Issue Date:

2017-05-23

Research Org.:

Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1358270

Patent Number(s):

9656243

Application Number:

14/328,136

Assignee:

The Penn State Research Foundation

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J21/06 - Silicon, titanium, zirconium or hafnium
B01J35/004 - {Photocatalysts}
B01J35/1019 - {100-500 m2/g}
B01J35/1023 - {500-1000 m2/g}
B01J35/1042 - {0.5-1.0 ml/g}
B01J35/1047 - {more than 1.0 ml/g}
B01J35/1061 - {2-50 nm}

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

C01B33/033 - by reduction of silicon halides or halosilanes with a metal or a metallic alloy as the only reducing agents

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

H01M10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes
H01M4/386 - {Silicon or alloys based on silicon}
H01M4/622 - {being polymers}
H01M4/623 - {fluorinated polymers}
H01M8/0606 - with means for production of gaseous reactants

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E60/10 - Energy storage
Y02E60/32 - Hydrogen storage
Y02E60/50 - Fuel cells

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

Y02P70/50 - Manufacturing or production processes characterised by the final manufactured product

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DOE Contract Number:  

AC02-05CH11231

Resource Type:

Patent

Resource Relation:

Patent File Date: 2014 Jul 10

Country of Publication:

United States

Language:

English

Subject:

25 ENERGY STORAGE