Tackling Our Energy Challenges in a New Era of Science
Combining 4 well-known reactions precisely predicts how well a catalyst performs
High efficiency is the goal when using renewable energy to split water into hydrogen (a fuel) and oxygen. Catalysts are the workhorses that accomplish this conversion, but in some cases, scientists haven't had an easy way to know if a catalyst is living up to its potential. Methods are well established for calculating that potential when the catalyst is in water, but not when in other solvents. Scientists have found a way to bridge this gap. With just four reactions, the team showed how much energy each catalyst could use if it worked perfectly. This work was done through the Center for Molecular Electrocatalysis, an Energy Frontier Research Center.
Phosphorus atoms help drive metal to form ammonia, adding insights to turning renewable energy to fuel
At the Center for Molecular Electrocatalysis, scientists showed what it takes to make long-overlooked chromium help form ammonia; this work is a critical step in controlling a reaction that could store electrons from intermittent wind and solar stations in use-any-time fuels.
New topographical map shows the energy hills and valleys involved in turning electrons into fuel
When starting out on a new adventure, it helps to have a map, allowing you to determine how to best spend your time and energy along the way. The same is true for chemical reactions. Without understanding the steps involved, reactions can end up on energy-wasting backroads or creating toxic wastes. Unfortunately, few reaction maps exist because of the expertise needed to chart all the possible paths. At Pacific Northwest National Laboratory, scientists mapped areaction that turns wind-generated electricity into fuel and the amount of energy needed for each step.
Review highlights molecular-level work involved in creating a design guide for catalysts for use of sustainable energy
In an invited review of research by the Center for Molecular Electrocatalysis, Dr. Morris Bullock and Dr. Monte Helm at Pacific Northwest National Laboratory showed how shoving protons can enable iron and nickel to replace platinum in catalysts, providing a less expensive and more readily available base for sustainable storage of renewable energy.
Researchers use materials free of precious metals to speed the troubling side of the fuel cell reaction
Replacing technologies that use fossil fuel with ones that use rare metals -- that's part of the problem for fuel cells. The cells use hydrogen generated at solar and wind stations to produce electricity. But, the cells require platinum to speed the reactions. Scientists at the Center for Molecular Electrocatalysis, led by Pacific Northwest National Laboratory, have found another way. By combining two simple, inexpensive, metal-free catalysts, they sped the cell's slower reaction.
PNNL scientists share fundamental insights in energy and atmospheric science at ACS National Meeting
Researchers from the Department of Energy's Pacific Northwest National Laboratory will be honored and present new work at the 250th American Chemical Society national meeting in Boston, Massachusetts, Aug. 16-20.
The reaction to convert solar energy to fuel is 50 times faster with a simple change in the solvent used
For catalysts, the environment matters. Packing in protons and water lets a hydrogen-producing catalyst work 50 times faster than the previous record holder, according to scientists at the Center for Molecular Electrocatalysis, which is led by Pacific Northwest National Laboratory. This discovery provides another page to the design guidelines for super-fast catalysts to turn intermittent sunlight into fuels.
Before they can power your car, hydrogen fuel cells need an efficiency boost. Pacific Northwest National Laboratory scientists Dr. Wendy Shaw and Dr. Monte Helm led an invitation-only workshop at the Telluride Science Research Center on hydrogenase mimics, which catalyze hydrogen production and use for fuel cells.
Interview with Chris Jones, Editor-in-Chief of ACS Catalysis, shows what it takes to control protons
Congratulations to the Hydrogen Catalysis Team at Pacific Northwest National Laboratory on receiving the 2015 ACS Catalysis Lectureship for the Advancement of Catalytic Science. Check out the video interview with Chris Jones, an American Chemical Society Editor-in-Chief, to learn what it took for the team to elucidate the design rules of one of the decade's great catalysis breakthroughs.
Once thought unimportant, a supporting film actually speeds or derails electricity production
Quickly, reliably turning wind energy into fuel means looking beyond the catalyst to its foundation, according to a study from the Center for Molecular Electrocatalysis, headquartered at Pacific Northwest National Lab. The team discovered that the catalyst's support has as much of an impact as the catalyst structure itself because the technique used to place the support changes the mesoscale environment.
Catalysis scientist Monte Helm joined national lab colleagues to fill grad students and postdocs in on what it takes to get into a national lab and what it takes to stay. He took part in two webinars hosted by the Center for Sustainable Materials Chemistry in February and March. The CSMC is a Center for Chemical Innovation sponsored by the NSF offering student and professional development opportunities and programs to train the next generation of innovators.
Transformations: The Value of Catalysis, Top Five List from CME's Last Five Years, Catalytic Choreography
The Institute for Integrated Catalysis' Transformations contains an overview on the value of catalysis to the economy, society, and scientific research. This issue's feature is on the first five years of the Center for Molecular Electrocatalysis at PNNL. Don't miss the latest video, "Catalytic Choreography." Zdenek Dohnalek (see photo) explains how his team discovers how molecules move, break and rejoin on the surface of a catalyst--fundamental knowledge for designing better catalysts to produce renewable energy.
Congratulations to the Hydrogen Catalysis Team at Pacific Northwest National Laboratory on winning the 2015 ACS Catalysis Lectureship for the Advancement of Catalytic Science. The team earned the award for research that has revolutionized understanding of the role of proton movement in the electrocatalytic interconversion of electricity and hydrogen fuel.
This is the first team win for the lectureship. The members are Morris Bullock, Daniel DuBois, Monte Helm, Michel Dupuis, Simone Raugei, Jenny Yang, John Roberts, Molly O'Hagan, Wendy Shaw, Aaron Appel, and Eric Wiedner at PNNL, and Sharon Hammes-Schiffer at University of Illinois. The team is part of the Center for Molecular Electrocatalysis, an Energy Frontier Research Center funded by the DOE Office of Science's Basic Energy Sciences.
A new approach shows the molecular consequences of everything from taking unnecessary detours to getting hopelessly lost
With catalysts, small design decisions can derail a trip through complex reaction paths. At Pacific Northwest National Laboratory, scientists have elaborated on a strategy to map the catalytic route. Scientists can now explore design decisions with molecular catalysts that store or release energy from the chemical bond in dihydrogen.
Congratulations to Dr. Sharon Hammes-Schiffer on being appointed editor-in-chief of Chemical Reviews beginning in 2015. Hammes-Schiffer is a world leader in theoretical and computational chemistry. She has extensively studied proton-coupled electron transfer reactions at the Center for Molecular Electrocatalysis. She is the Swanlund Professor of Chemistry at theUniversity of Illinois at Urbana-Champaign.