Nitrate-to-Ammonia Conversion on Ru/Ni Hydroxide Hybrid through Zinc-Nitrate Fuel Cell

Article Nanoscience & Nanotechnology

Tuning the Oxidation State of Cu Electrodes for Selective Electrosynthesis of Ammonia from Nitrate

Jili Yuan et al.

Summary: Oxidic Cu formed on a Cu electrode can enhance its activity and selectivity for NO3- reduction to NH3, leading to improved catalytic performance. Research on oxidic Cu contributes to higher efficiency in nitrate recycling.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Multidisciplinary

Theoretical Insights into the Mechanism of Selective Nitrate-to-Ammonia Electroreduction on Single-Atom Catalysts

Huan Niu et al.

Summary: Selective nitrate-to-ammonia electrochemical conversion is an efficient pathway to solve nitrate pollution, and current research on single-atom catalysts demonstrates high efficiency and selectivity in NO3RR, paving the way for further development in this area.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Review Engineering, Environmental

Recent advances in non-noble metal electrocatalysts for nitrate reduction

Xi Zhang et al.

Summary: This review highlights the latest research progress in non-noble metal materials for electrochemical nitrate reduction, discussing mechanistic insights and strategies for improving performance.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Multidisciplinary Sciences

A rechargeable zinc-air battery based on zinc peroxide chemistry

Wei Sun et al.

Summary: The study presents a zinc-O-2/zinc peroxide chemistry that operates through a 2e(-)/O-2 process in nonalkaline aqueous electrolytes, allowing highly reversible redox reactions in zinc-air batteries. This innovative ZnO2 chemistry, enabled by water-poor and zinc ion (Zn2+)-rich inner Helmholtz layer, shows superior reversibility and stability compared to alkaline zinc-air batteries.

SCIENCE (2021)

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Review Chemistry, Multidisciplinary

Electrocatalytic Refinery for Sustainable Production of Fuels and Chemicals

Cheng Tang et al.

Summary: The emerging electrocatalytic refinery (e-refinery) is a more sustainable and environmentally friendly strategy for converting renewable feedstocks and energy sources into transportable fuels and chemicals. Challenges remain in understanding mechanistic aspects and materials design for complex reactions in e-refinery processes.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Metallic Co Nanoarray Catalyzes Selective NH3 Production from Electrochemical Nitrate Reduction at Current Densities Exceeding 2 A cm(-2)

Xiaohui Deng et al.

Summary: The study demonstrates the high NH3 producing capability and close-to-unity Faradaic efficiency of metallic cobalt nanoarrays in electrochemical nitrate reduction. Density function theory calculation reveals the optimized adsorption energy of NITRR intermediates on Co surface. Additionally, the study proposes a water dissociation-hydrogenation pathway that facilitates proton-supplying in the process.

ADVANCED SCIENCE (2021)

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Article Chemistry, Multidisciplinary

Efficient Nitrogen Fixation to Ammonia through Integration of Plasma Oxidation with Electrocatalytic Reduction

Laiquan Li et al.

Summary: The process of converting N-2 to NH3 can be decoupled into a two-step process for efficient and selective ammonia production, utilizing air and water as low-cost raw materials. Surface boron-rich nickel boride electrocatalyst plays a key role in enhancing activity, selectivity, and stability, resulting in significant ammonia production with nearly 100% Faradaic efficiency.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Review Chemistry, Multidisciplinary

Main-group elements boost electrochemical nitrogen fixation

Laiquan Li et al.

Summary: In this review, we critically evaluate the application of main-group elements in electrocatalytic nitrogen reduction, present methodologies for N2 activation and HER suppression, and demonstrate the potential of MGEs-based mechanisms for smart design. The conclusion shows that MGEs can significantly enhance electrochemical N2 fixation.

CHEM (2021)

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Article Multidisciplinary Sciences

Electrochemical ammonia synthesis via nitrate reduction on Fe single atom catalyst

Zhen-Yu Wu et al.

Summary: The study reports a method for selectively converting nitrate to ammonia using an Fe single atom catalyst, which effectively prevents the formation of N-N coupling products while increasing the production rate of ammonia.

NATURE COMMUNICATIONS (2021)

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Article Chemistry, Physical

A New Pd Doped Proton Conducting Perovskite Oxide with Multiple Functionalities for Efficient and Stable Power Generation from Ammonia at Reduced Temperatures

Fan He et al.

Summary: The use of a new Ba(Zr0.1Ce0.7Y0.1Yb0.1)(0.95)Pd0.05O3-delta perovskite as the key component in ammonia-fueled PCFCs improves catalytic activity for NH3 decomposition and increases proton conductivity, leading to higher power density and stability.

ADVANCED ENERGY MATERIALS (2021)

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Review Energy & Fuels

New roads and challenges for fuel cells in heavy-duty transportation

David A. Cullen et al.

Summary: The recent release of hydrogen economy roadmaps highlights the need for increased global investment in hydrogen production, storage, infrastructure and utilization. The shift in focus towards heavy-duty vehicle applications for fuel cell technologies is discussed, along with the required improvements in fuel cell systems and materials to meet efficiency and durability requirements. The article also summarizes the latest market outlooks and targets for heavy-duty vehicle applications.

NATURE ENERGY (2021)

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Article Chemistry, Multidisciplinary

Electronic Modulation Caused by Interfacial Ni-O-M (M=Ru, Ir, Pd) Bonding for Accelerating Hydrogen Evolution Kinetics

Liming Deng et al.

Summary: Designing a well-defined metal-support interfacial bond is an effective strategy to optimize the intrinsic activity of noble metals, but it is also challenging. The developed quantum-sized metal nanoparticles anchored on nickel metal-organic framework nanohybrids demonstrate excellent hydrogen evolution reaction (HER) activity at all pH values, surpassing even commercial Pt/C and recent noble-metal catalysts. The interfacial-bond-induced electron redistribution plays a crucial role in enhancing the reaction kinetics and overall performance of the hybrids.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Multidisciplinary Sciences

Designing the next generation of proton-exchange membrane fuel cells

Kui Jiao et al.

Summary: The rapid growth of proton-exchange membrane fuel cell technology is driving the demand for clean and sustainable global energy applications. Increasing PEMFC power density is critical for commercialization, with ambitious goals set globally. Future high-power-density PEMFCs will focus on improving membrane electrode assembly components, water and thermal management, and materials.

NATURE (2021)

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Article Multidisciplinary Sciences

Nitrogen reduction to ammonia at high efficiency and rates based on a phosphonium proton shuttle

Bryan H. R. Suryanto et al.

Summary: Ammonia (NH3) is a globally important commodity for fertilizer production, but its synthesis by the Haber-Bosch process causes substantial emissions of carbon dioxide. Alternative methods being explored include the promising electrochemical lithium-mediated nitrogen reduction reaction, which has required sacrificial sources of protons. In this study, a phosphonium salt is introduced as a proton shuttle to help resolve this limitation, resulting in high NH3 production rates and demonstrated continuous operation for more than 3 days.

SCIENCE (2021)

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Article Chemistry, Multidisciplinary

Reaction intermediate-mediated electrocatalyst synthesis favors specified facet and defect exposure for efficient nitrate-ammonia conversion

Qi Hu et al.

Summary: The study demonstrates that in alkaline media, the NH3 yield rate catalyzed by defective Cu(100) facets in NO3-RR is 2.3 times higher than that of the Haber-Bosch process. It is discovered that the intermediates of NO3-RR, N*, can serve as capping agents for controlling the exposed facets during the reduction.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Article Chemistry, Multidisciplinary

Pd doping-weakened intermediate adsorption to promote electrocatalytic nitrate reduction on TiO2 nanoarrays for ammonia production and energy supply with zinc-nitrate batteries

Ying Guo et al.

Summary: This study presents a highly efficient Pd-doped TiO2 nanoarray electrode for ammonia production through nitrate electroreduction, achieving high yields and selectivity. By introducing Pd, the adsorption abilities of intermediates were weakened, leading to record-high NH3 yield, NH3 FE, and nitrate conversion.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Review Energy & Fuels

Bridging the gap between highly active oxygen reduction reaction catalysts and effective catalyst layers for proton exchange membrane fuel cells

Jiantao Fan et al.

Summary: The impressive performance of low-platinum-loading oxygen reduction reaction catalysts in initial electrochemical tests is often not reflected in real fuel cells, leading researchers to explore strategies to address this issue.

NATURE ENERGY (2021)

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Article Chemistry, Multidisciplinary