Hydrogen Sensing of Hawaiji Δ 13th of January 2014 Ω 5:11 AM

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«U.S. Hydrogen Sensing	Θ	Θ
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~ Advanced Material for Hydrogen WaterPhotolysis

»Advanced Material for Hydrogen WaterPhotolysis

Operating Agent:
ξ Dr. Eric Miller, Hawaii Natural Energy Institute (ericm@hawaii.edu)

Term:
ξ Task 26 was launched in 2008 for a three year term.

Purpose and Objectives:

1. Intensification of international collaboration
ξ making use of extended fields of expertise in areas of materials theory,
ξ synthesis and characterization, as well as data and data-base management;

2. Advancement of photoelectrode materials science
ξ particularly addressing the discovery of new practical materials,
ξ with bulk and surface properties
ξ specifically engineered to meet the requirements for efficient and stable Photoelectrochemical (PEC) water splitting;

3. Demonstration of stable and efficient water splitting in the leading materials systems,
ξ using standardized performance characterizations and round-robin testing procedures; and

4. Promotion of photolysis of water through publications, education and outreach program.

Background:
ξ Photoelectrochemical (PEC) hydrogen production, using sunlight to directly split water,
ξ is one of the paramount enabling technologies for a future
ξ where hydrogen is widely deployed as an energy carrier
ξ The “traditional” semiconductor-based PEC material systems studied to date,
ξ in particular the simple metal oxides such as TiO2, WO3 and Fe2O3, however,
ξ have been unable to meet all the performance, durability and cost requirements for practical hydrogen production
ξ Technology-enabling breakthroughs are needed in the development of new, advanced materials systems
ξ Toward this end, the IEA Hydrogen Implementation Agreement Task 26,
ξ working in close conjunction with the U.S. Department of Energy’s “Working Group on PEC Hydrogen Production”,
ξ is bringing together international experts in analysis, theory, synthesis and characterization
ξ from the academic, industry and national laboratory research sectors across the world

Description:
ξ The main goal of the new Task 26 is to seamlessly extend the excellent R&D efforts
ξ made under previous PEC Tasks 14 and 20 toward practical material and systems solutions for water-photolysis
ξ In this continued research, photon conversion efficiency and durability
ξ will be judged as the main measures of success in the development of new PEC materials
ξ A three-year collaborative R&D program (with potential for extension to five years)
ξ has been initiated that plans to involve research experts from
ξ Australia,
ξ France,
ξ Germany,
ξ Japan,
ξ Korea,
ξ the Netherlands,
ξ New Zealand,
ξ Spain,
ξ Sweden,
ξ Switzerland,
ξ the United Kingdom and
ξ the USA as well as
ξ the European Commission
ξ There is serious interest from other countries, both current and prospective IEA HIA members.

Progress:
ξ Within Task 26, international “Task Forces” are being assembled to advance the state-of-the-art in
ξ PEC materials theory, synthesis and characterization; and
ξ to apply these techniques in the development of promising, broad-ranging PEC materials systems,
ξ including complex metal-oxide, -sulfide, and -nitride compounds;
ξ amorphous silicon alloys;
ξ III-V semiconductors; and
ξ the copper chalcopyrites.

Key supporting activities
ξ establishing standardized testing and screening protocols for candidate PEC materials systems,
ξ setting up comprehensive databases of PEC research and development efforts and results, and
ξ performing techno-economic analyses of competing PEC production systems based on the new materials being developed PEC is sometimes called the “Holy Grail” of hydrogen production. Sunlight directly splits water using a low-temperature, and potentially low-cost process. However, the development of practical demonstration systems requires significant scientific and engineering efforts through ongoing, well-structured R&D programs. The IEA HIA Task 26 is helping to provide this structure on a world-wide stage.

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