Electrochemical Urea Synthesis 2026 — PatSnap Eureka
Electrochemical Urea Synthesis: C–N Coupling, Catalysts & IP Signals
The field of electrochemical urea synthesis has accelerated rapidly since 2021, driven by decarbonization imperatives and breakthroughs in electrocatalyst design. Explore the full landscape — from ambient C–N coupling routes to power-to-urea techno-economics — powered by PatSnap Eureka.
Two Distinct Technology Families in Electrochemical Urea
Electrochemical urea synthesis encompasses two fundamentally distinct technology families. The first is reductive C–N coupling synthesis — electrochemical co-reduction of nitrogen-containing feedstocks (N2, NO2⁻, NO3⁻) with CO2 to form urea under ambient or mild conditions. The second is urea electrooxidation (UOR) — anodic oxidation of pre-formed urea for hydrogen generation, fuel cell operation, or wastewater remediation.
The core electrochemical synthesis challenge is achieving selective C–N bond coupling while suppressing competing reactions: hydrogen evolution, CO2 reduction to CO/formate, and N2 reduction to NH3. The catalytic C–N coupling step — forming the NCON precursor intermediate — is identified as the thermodynamic and kinetic bottleneck across multiple studies in this dataset.
Feedstock pairs investigated across retrieved results include N2 + CO2, NO2⁻ + CO2, and N2 + CO (via in situ CO generation). Research into these routes is tracked comprehensively via PatSnap's IP analytics platform, which covers patent and literature data across all major jurisdictions. The World Intellectual Property Organization (WIPO) also provides complementary global patent filing statistics relevant to green chemistry innovation.
A third adjacent technology — photocatalytic urea synthesis — appears in the dataset as a complementary non-electrochemical route, primarily via TiO2-based materials. This approach is reviewed in depth by researchers at PatSnap's chemicals and materials intelligence vertical.
Catalyst Faradaic Efficiency & Energy Benchmarks
All data sourced from patent and literature records (2019–2025) retrieved via PatSnap Eureka. Values represent reported laboratory-scale results.
Faradaic Efficiency by Catalyst System (%)
ZnO vacancy nanosheets and AuCu nanofibers lead reported FE values; all remain below the ~50% threshold likely needed for commercial viability.
Specific Energy: Power-to-Urea vs. Conventional (GJ/MT)
The techno-economic analysis reports a greater than 20× energy gap between electrochemical and conventional urea synthesis routes.
Geographic Distribution of Core C–N Coupling Contributions
Chinese academic institutions account for approximately 8 of 12 core urea synthesis contributions in this dataset.
Urea Yield Rate: Fe–Ni Diatomic vs. Single-Atom Controls
Bonded Fe–Ni diatomic pairs outperform single-atom and isolated diatomic controls by an order of magnitude at 20.2 mmol h⁻¹ g⁻¹.
Four Active Research Clusters in Electrochemical Urea
Based on retrieved patent and literature records spanning 2019–2025, the field clusters around four distinct catalyst and mechanism families.
Bimetallic Alloy & Dual-Atom Catalysts for CO2 + Nitrite/N2 Co-Reduction
Bimetallic or dual-atom sites co-adsorb and activate both carbon (CO2) and nitrogen (N2 or NO2⁻) feedstocks simultaneously, enabling C–N coupling. Key results include AuCu alloy nanofibers achieving 3,889.6 μg h⁻¹ mg⁻¹ at 24.7% FE (Zhejiang University of Technology, 2022) and bonded Fe–Ni diatomic pairs delivering 20.2 mmol h⁻¹ g⁻¹ at 17.8% FE (USTC, 2022) — outperforming single-atom controls by an order of magnitude. Computational screening of 72 dual-metal MN3–M'N3 systems on N-doped graphene established the first principal descriptor for urea electrosynthesis selectivity (Changchun, 2022).
NCON intermediate pathwayTransition Metal Oxides & Vacancy-Engineered Catalysts
This cluster focuses on scalable, non-precious-metal catalysts based on engineered defects (oxygen vacancies) or mixed metal oxide architectures. Oxygen vacancy-rich ZnO (ZnO-V) achieves 23.26% urea FE at −0.79 V vs. RHE, approximately 3× higher than stoichiometric ZnO (Tianjin University, 2021). In situ DEMS and DRIFTS confirm the NH2* + COOH* coupling pathway. BiFeO3/BiVO4 perovskite hybrids exploit local charge redistribution for targeted N2 and CO activation (Taiyuan, 2021). MBene DFT screening (Mo2B2, Ti2B2, Cr2B2) demonstrates superior basal activity for N2 + CO2 → urea under ambient conditions (Nanjing Normal University, 2021).
Oxygen vacancy engineeringUrea Electrooxidation (UOR) Catalysts for H2 & Wastewater
A substantial portion of the dataset addresses the reverse process — oxidizing urea electrochemically for hydrogen production, direct urea fuel cells (DUFCs), and wastewater remediation. Ni2P@NiO/NiF catalyst achieves 50 mA cm⁻² at 1.31 V vs. RHE (University of West Bohemia, 2022). NiMn0.14-BDC MOF delivers 10 mA cm⁻² at 1.317 V vs. RHE with a turnover frequency of 0.15 s⁻¹ (Huazhong University, 2022). Ni-based anodes are the dominant catalyst class for DUFCs using urea from urine and wastewater, as documented by Universitas Indonesia (2021, 2024). UOR is positioned as an energy-efficient anode replacement for the oxygen evolution reaction (OER) in water electrolyzers.
Dual function: H2 + remediationOrganic Routes & Ionic Liquid-Mediated CO2 Fixation
A smaller but distinct cluster explores urea derivative synthesis via unconventional electrochemical pathways. Tulane University (2022) demonstrated that O2 electroreduction in ionic liquids directly drives CO2 + primary amine → urea compounds at low potentials without chemical reagents, opening a new mechanistic space potentially applicable to substituted urea pharmaceutical intermediates. The 2025 EP patent from Harbin Institute of Technology (Shenzhen) on continuous-flow ¹³C-urea synthesis represents process engineering maturation for high-value isotope-labeled urea used in Helicobacter pylori diagnostic breath tests.
Pharmaceutical & isotope nicheFrom Fertilizers to Diagnostic Isotopes: Six Application Domains
The primary motivation across the dataset is displacing the conventional urea synthesis route for agricultural fertilizer production. Urea represents more than 50% of the nitrogen fertilizer market, and its global demand has increased more than 100× in recent decades — contextualizing the urgency of green synthesis routes, as noted in the photocatalytic urea synthesis review (Pontificia Universidad Católica de Chile, 2022). The Food and Agriculture Organization of the UN (FAO) tracks global fertilizer consumption trends relevant to this demand driver.
For wastewater treatment and urea removal, multiple UOR catalyst studies explicitly target remediation of agricultural and human wastewater. UOR is simultaneously positioned as a hydrogen production pathway — an energy-efficient anode replacement for the oxygen evolution reaction (OER) in water electrolyzers, as framed by Pittsburg State University's CuCo2O4 nanosheet work (2019). Researchers tracking hydrogen production innovation can explore related IP via PatSnap's chemicals and materials intelligence tools.
Direct urea fuel cells (DUFCs) represent a power generation application using urea from urine and wastewater. Two reviews from Universitas Indonesia (2021, 2024) document the state of Ni-based anodes as the dominant catalyst class in this segment. The International Energy Agency (IEA) provides broader context on electrochemical energy conversion technologies.
The most recent patent in the dataset — the 2025 EP patent from Harbin Institute of Technology (Shenzhen) on continuous-flow ¹³C-urea synthesis — targets medical diagnostic isotope applications, specifically isotopically labeled urea for Helicobacter pylori diagnostic breath tests. This represents a niche but high-value application signaling process engineering maturation. R&D teams in life sciences can access related patent landscapes via PatSnap's life sciences intelligence platform.
Five Strategic Signals for IP and R&D Teams
Derived from the patent and literature dataset spanning 2019–2025. These signals should inform catalyst development priorities, IP filing strategy, and commercial entry sequencing.
Catalyst Design Is the Primary Bottleneck
The best-performing catalysts (AuCu nanofibers: 3,889.6 μg h⁻¹ mg⁻¹ at 24.7% FE; Fe–Ni diatomic: 20.2 mmol h⁻¹ g⁻¹ at 17.8% FE) remain at laboratory scale with Faradaic efficiencies well below the >50% threshold likely needed for economic viability. R&D priority should focus on simultaneously improving FE and current density.
NO2⁻ and NO3⁻ Preferred Over N2 as Nitrogen Feedstocks
Multiple high-performing catalysts in this dataset use nitrite or nitrate rather than N2, as the N≡N triple bond activation barrier is lower for these pre-activated nitrogen sources. IP strategies should differentiate between N2-based and nitrogen oxyanion-based routes, as they represent distinct catalyst spaces.
Five Emerging Technology Directions in Electrochemical Urea
Based on the most recent filings and publications (2023–2025) in this dataset, these directions signal where the field is heading.
Diatomic & Bonded Metal Pair Catalysts
The shift from single-atom to bonded diatomic catalyst architectures (e.g., Fe–Ni pairs) is the most prominent emerging catalyst design direction. The Fe–Ni diatomic catalyst (USTC, 2022) achieved order-of-magnitude performance gains over single-atom controls, establishing a new design paradigm. Access related patent filings via PatSnap Analytics.
MOF-Based UOR Electrocatalysts with Tunable Active Site Density
The emergence of NiMn-BDC MOFs (2022) and NiCo-MOFs (2023) signals a move from bulk Ni electrodes toward structurally precise porous frameworks that enable rational tuning of site geometry and density. The Royal Society of Chemistry publishes extensively on MOF electrocatalysis relevant to this direction.
Isotope-Labeled Urea via Continuous-Flow Electrochemistry
The 2025 EP patent from Harbin Institute of Technology (Shenzhen) on ¹³C-urea continuous-flow synthesis represents process engineering maturation, transitioning from batch laboratory demonstrations toward continuous-flow production systems for high-value specialty urea used in H. pylori diagnostic breath tests.
Ionic Liquid-Mediated CO2 Fixation to Urea Derivatives
Tulane University's O2-triggered electrochemical route (2022) opens a new mechanistic space by using electroreduced O2 as the sole catalyst in ionic liquids to drive CO2 + amine condensation — potentially applicable to substituted urea pharmaceutical intermediates. Enterprise IP teams can monitor this space via PatSnap customer case studies.
Multi-Product Faradaic Efficiency Coupling
The Fe–Ni diatomic work reports approximately 100% total FE across urea, CO, and NH3 co-products, pointing toward future process designs that valorize all C–N coupling intermediates rather than maximizing urea selectivity alone. This systems-level approach may reframe the economics of electrochemical urea synthesis entirely.
Track emerging electrochemical urea patents as they publish
Set up automated alerts for new C–N coupling filings across CN, EP, and US jurisdictions in PatSnap Eureka.
Electrochemical Urea Synthesis — key questions answered
Electrochemical urea synthesis encompasses two fundamentally distinct technology families: reductive C–N coupling synthesis — electrochemical co-reduction of nitrogen-containing feedstocks (N2, NO2⁻, NO3⁻) with CO2 to form urea under ambient or mild conditions — and urea electrooxidation (UOR) — anodic oxidation of pre-formed urea for hydrogen generation, fuel cell operation, or wastewater remediation.
The conventional Bosch–Meiser process combines CO2 and NH3 at 150–200 bar and 180–200°C. Electrochemical routes aim to replace this with ambient-condition processes using waste feedstocks such as CO2, N2, nitrite, and NO3⁻. However, the retrieved techno-economic analysis reports 109 GJ/MT urea specific energy consumption for power-to-urea vs. approximately 3.2–5.5 GJ/t for conventional synthesis — indicating a greater than 20× energy gap that must be addressed before green electrochemical urea can compete commercially without carbon pricing or policy support.
Among retrieved results, the best-performing catalysts are: AuCu alloy nanofibers (Zhejiang University of Technology, 2022) achieving a urea yield rate of 3,889.6 μg h⁻¹ mg⁻¹cat and Faradaic efficiency of 24.7% at −1.55 V vs. Ag/AgCl; and bonded Fe–Ni diatomic pairs (University of Science and Technology of China, 2022) delivering a urea yield rate of 20.2 mmol h⁻¹ g⁻¹ with FE of 17.8%, outperforming single-atom and isolated diatomic controls by an order of magnitude.
The catalytic C–N coupling step — forming the *NCON* precursor intermediate — is identified as the thermodynamic and kinetic bottleneck across multiple studies in this dataset. The core challenge is achieving selective C–N bond coupling while suppressing competing reactions including hydrogen evolution, CO2 reduction to CO/formate, and N2 reduction to NH3.
Innovation in C–N electrochemical coupling is heavily concentrated in Chinese academic institutions. Among the directly relevant electrochemical urea synthesis studies in this dataset, Chinese institutions account for approximately 8 of the 12 core urea synthesis contributions, including Tianjin University, University of Science and Technology of China (Hefei), Nanjing Normal University, Changchun University of Science and Technology, Zhejiang University of Technology, Huazhong University of Science and Technology, Chinese Academy of Sciences (Chongqing), and Harbin Institute of Technology (Shenzhen). No major industrial assignees appear in this dataset's core urea synthesis records, suggesting the field remains largely in academic research stages.
UOR applications documented in this dataset include: hydrogen production (UOR is positioned as an energy-efficient anode replacement for the oxygen evolution reaction in water electrolyzers); wastewater treatment and urea removal from agricultural and human wastewater; and direct urea fuel cells (DUFCs) using urea from urine and wastewater, with Ni-based anodes as the dominant catalyst class.
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References
- Electrosynthesis of Urea from Nitrite and CO2 over Oxygen Vacancy-Rich ZnO Porous Nanosheets — Tianjin University, 2021
- Establishing the Principal Descriptor for Electrochemical Urea Production via Dispersed Dual-Metals Anchored on N-Decorated Graphene — Changchun University of Science and Technology, 2022
- Urea Electrooxidation in Alkaline Environment: Fundamentals and Applications — Chinese Academy of Sciences, Chongqing, 2023
- Electrochemical Synthesis of Urea on MBenes — Nanjing Normal University, 2021
- Identifying and Tailoring C–N Coupling Site for Efficient Urea Synthesis over Diatomic Fe–Ni Catalyst — University of Science and Technology of China, 2022
- AuCu Nanofibers for Electrosynthesis of Urea from Carbon Dioxide and Nitrite — Zhejiang University of Technology, 2022
- Electrochemical C–N Coupling with Perovskite Hybrids toward Efficient Urea Synthesis — Taiyuan, 2021
- Highly Selective Electrochemical Synthesis of Urea Derivatives Initiated from Oxygen Reduction in Ionic Liquids — Tulane University, 2022
- Electrochemically Induced Conversion of Urea to Ammonia — Ohio University, 2015
- Ni2P Nanoparticle-Inserted Porous Layered NiO Heterostructured Nanosheets as a Durable Catalyst for the Electro-Oxidation of Urea — University of West Bohemia, 2022
- Metal-Organic Frameworks Offering Tunable Binary Active Sites toward Highly Efficient Urea Oxidation Electrolysis — Huazhong University of Science and Technology, 2022
- Electrocatalytic Ni-Co Metal Organic Framework for Efficient Urea Oxidation Reaction — Taizhou University, 2023
- Nanosheets of CuCo2O4 as a High-Performance Electrocatalyst in Urea Oxidation — Pittsburg State University, 2019
- Recent Progress in Direct Urea Fuel Cell — Universitas Indonesia, 2021
- Advancements in Ni-based Catalysts for Direct Urea Fuel Cells: A Comprehensive Review — Universitas Indonesia, 2024
- Techno-economic Analysis of a Small-scale Power-to-Green Urea Plant — Department of Chemical Engineering, 2021
- Photocatalyzed Production of Urea as a Hydrogen–Storage Material by TiO2–Based Materials — Pontificia Universidad Católica de Chile, 2022
- Iron-Catalyzed Urea Synthesis: Dehydrogenative Coupling of Methanol and Amines — Columbia, 2018
- Continuous-flow Synthesis Method of ¹³C-Urea — Harbin Institute of Technology, Shenzhen, EP, 2025
- World Intellectual Property Organization (WIPO) — Global Patent Filing Statistics
- Food and Agriculture Organization of the UN (FAO) — Global Fertilizer Consumption Data
- International Energy Agency (IEA) — Electrochemical Energy Conversion Technologies
- Royal Society of Chemistry — MOF Electrocatalysis Research
All data and statistics on this page are sourced from the references above and from PatSnap's proprietary innovation intelligence platform. This landscape is derived from a limited set of patent and literature records retrieved across targeted searches and represents a snapshot of innovation signals within this dataset only.
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