amy calgaro, nirala singh, professor eric mcfarland: department...

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Amy Calgaro, Nirala Singh,

Professor Eric McFarland: Department of Chemical Engineering

UC LEADS, UCSB, UCR

August 25th, 2011

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Energy Storage

Regenerable Fuel cell

Electrolysis

Electricity production

HBr

Br2H2

Electricity

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Energy Storage

Regenerable Fuel cell

Electrolysis

Electricity production

Br2H2

HBr

Electricity

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Ti

TiO2

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Synthesize doped TiO2

High-throughput testing

Compare to TiO2, Pt and electrographite

Optimum dopant

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Metal Oxide Synthesis Carbon powder support

Cyclic Voltammagrams

Br2 evolution

*Investigation and development of new materials for electrochemical energy conversion , Anna Ivanovskaya

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Vary Dopant

3M HBr bath

Analyze with Inductively Coupled Plasma spectrometer (ICP)

High concentrations = unstable

iCAP ICP User's Guide, Joe Doyle

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Ru doped TiO2

Pt

Glassy Carbon

Support

Fe doped TiO2

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Ru doped TiO2

Pt

Glassy Carbon

Support

Fe doped TiO2

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50

40

30

10

20

0

12

-0.15

-0.1

-0.05

0

0.05

0.1

0.15

0.2

0 100 200 300 400 500

Co

ncen

trati

on

(P

PM

)

Time (hours)

Fe

Ru

Cr

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--- 5% Fe doped TiO2

--- 5% Cr doped TiO2

--- 10% Ru doped TiO2

--- TiO2 ink

--- 5% Ni doped TiO2

--- Pt Ink

--- 30% Ru doped TiO2

--- Graphite

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Fe doped TiO2

Conductive but Unstable

Ru doped TiO2

Happy Medium

Cr doped TiO2

Really stable

Great potential electrode

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Determine optimum dopant concentrations

Characterize doped TiO2

Synthesize doped electrodes

Ti

TiO2 + Dopant

*Investigation and development of new materials for electrochemical energy conversion , Anna Ivanovskaya

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Thank you to Nirala Singh, Prof. Eric McFarland

Anna Ivanovskaya and the Stucky Lab

Arica Lubin, Maria Franco-Aguilar, and UC LEADS for the wonderful opportunity to research this summer

Funding: Thank you to NSF EFRI-RESTOR grant # 1038234

for partial funding.

ICP use was made possible by the MRL Central Facilities, which are supported by the NSF

UC Office of the President for funding the UC LEADS internship program

ICP atomic emissions spectroscopy