Topic: Electrochemical Ammonia

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Nitrogen Reduction Reaction at High Current-to-Ammonia Efficiency

By , and on August 25, 2022
Apart from its use in the fertiliser and chemical industries, ammonia is currently attracting our community as a potential carbon-neutral fuel and as an energy carrier for worldwide transportation of renewable sources. To achieve this goal, replacements of the conventional hydrocarbon deposit-based technology for NH3 production require to be a green but inexpensive and scale-flexible technology, namely the only genuine electrochemical lithium-mediated nitrogen reduction reaction (Li-NRR). Reported by many research groups around the world, the process had so far been hampered by poor yield rates and efficiencies. At Monash University, we introduced a compact ionic assembly arranged in the electrode-electrolyte…

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3rd generation ammonia synthesis: new catalysts & production pathways

By on December 08, 2021

We look at four new developments this week:

1. A team from DTU Energy and the Dalian Institute of Chemical Physics have uncovered a new class of alternative catalysts for mild condition ammonia synthesis. The ternary ruthenium complex hydrides Li4RuH6 and Ba2RuH6 avoid the energy-intensive pathway of nitrogen dissociation in a "synergistic" manner.

2. A team from the Korea Institute of Machinery and Materials reported a highly selective (95%) plasma ammonia synthesis method.

3. A team from Delft University of Technology has presented an present an "unconventional electrochemical design" that physically separates hydrogen and dinitrogen activation sites.

4. A team at the Max Planck Institute for Coal Research has demonstrated a new mechanochemical ammonia synthesis system that operates at room temperature and pressures as low as 1 bar.

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High-productivity electrosynthesis of ammonia from dinitrogen

By on August 26, 2021
The so-called lithium redox-mediated nitrogen reduction reaction presents the only known process enabling genuine electrochemical conversion of N2 to ammonia. Notwithstanding the rapidly increasing investigative efforts, the commonly reported performances of the Li-mediated N2 electroreduction, viz. yield rate, current-to-ammonia (faradaic) efficiency and durability in operation, still pertain to the domain of academic research rather than practical development. Our most recent work focused on redesigning the key components of the electrolytic N2 reduction cell enabled breakthroughs in all the key metrics of the process. Specifically, we have introduced a stable proton shuttle based on the phosphonium cation that delivers protons to…

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The Ammonia Wrap: EU ambitions, new tankers, and GW scale green ammonia in Denmark, Norway, and Chile

By on February 25, 2021
Welcome to the Ammonia Wrap: a summary of all the latest announcements, news items and publications about ammonia energy. In this week's wrap: HyDeal Ambition, new marine tankers, fuel forecasts & SOFC developments, a new technical briefing on power generation, UNSW leads research in P2X, GWs of green ammonia in Denmark, Norway and Chile, green ammonia in the Orkneys, new government focus on ammonia in South Africa, and India to make green ammonia production mandatory?

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Panel discussion on next-generation ammonia synthesis

By on December 03, 2020
This year’s Ammonia Energy Conference included a panel discussion on next-generation ammonia synthesis, moderated by Sarb Giddey (CSIRO, Australia), and featuring panelists Doug MacFarlane (Monash University, Australia), Karthish Manthiram (MIT, United States), and Michael Stoukides (Aristotle University of Thessaloniki, Greece). The panel discussed the direct fixation of nitrogen in the form of ammonia from water and air in a single electrochemical device, which is considered the “holy grail” of ammonia synthesis. During the panel, the participants gave their perspectives on the state of the art, and the obstacles and opportunities for progress.

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ARENA’s Investments in Renewable Hydrogen and Ammonia

By on August 27, 2020
ARENA’s purpose is to improve the competitiveness of renewable energy technologies and increase the supply of renewable energy through innovation that benefits Australian consumers and businesses. By connecting investment, knowledge and people to deliver energy innovation, we are helping to build the foundation of a renewable energy ecosystem in Australia. We provide funding support to help the renewable hydrogen industry overcome barriers to its further development, such as the high cost of producing renewable hydrogen, limited regulatory frameworks for applications such as use in the natural gas network, under-developed end-use markets and insufficient demand to attract investment in projects. ARENA…

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The global quest to decarbonize ammonia production

By on June 20, 2019
NEWS BRIEF: The industrial process for ammonia production is increasingly being recognized as a target for decarbonization - by researchers, investors, regulators, and the producers themselves. Demonstrating this shift in awareness, Chemical and Engineering News (C&EN), one of the flagship publications of the American Chemical Society (ACS), this week published an in-depth review of global research and development efforts and demonstration plants for sustainable ammonia synthesis. Its review is all-encompassing, from near-term feasible renewable Haber-Bosch plants, to long-term research areas of electrochemistry, photocatalysis, and bioengineering.

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A rigorous protocol for measuring electrochemical ammonia synthesis rates

By on May 26, 2019
NEWS BRIEF: A paper published this week in Nature addresses the challenge of accurately reporting synthesis rates for electrochemical ammonia production technologies. According to the authors, from Stanford University, the Technical University of Denmark (DTU), and Imperial College London, it is not always clear if new technologies really synthesize ammonia, or if the researchers simply measured contaminants. This is because, at experimental scale, materially significant amounts of ammonia (or other nitrogen-containing molecules) could be present in the air, membranes, catalysts, or simply the researchers' breath. To support the development of viable electrochemical ammonia synthesis technologies, the authors propose "benchmarking protocols," and "a standardized set of control experiments."

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Ammonia Energy Coming on Like Gangbusters in Australia

By on September 13, 2018
NH3FA.Oz, the Australian chapter of the NH3 Fuel Association, held a meeting on August 30 in approximate observance of its one-year anniversary.  John Mott, one of the founders of NH3FA.Oz and a member of the NH3 Fuel Association’s Advisory Board, reported that more than two dozen stakeholders from academia, industry, and the public sector participated.  The meeting came on the heels of the rapid-fire release of three significant reports, and preceded by a week the announcement of an important set of research grants.  The meeting, the reports, and the announcement all made clear that ammonia  is fast becoming a fixture in Australian energy policy.
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