Advanced engineered catalyst and catalyst support ... · Fig. 4 SEM Images of ECS Materials Fig. 5...
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English Fig. 4 SEM Images of ECS Materials Fig. 5 X-Ray Diffractograms of Pt/ECS Materials 10 20 30 40 50 60 70 80 90 2θ 50Pt/2402 2.5 nm 30Pt/2402 2.4 nm 50Pt/1602 2.8 nm 30Pt/1602 2.7 nm 50Pt/3701 2.7 nm 30Pt/3701 2.0 nm 63 66 69 72 Fig. 3 Raman Spectra of ECS Pajarito Powder manufactures advanced materials that improve performance, reduce cost and extend the durability of fuel cell and electrolyzer systems. Pajarito Powder utilizes the VariPore TM proprietary manufacturing platform across product lines to provides flexible materials development and rapid manufacturing scalability of catalysts, ECS catalyst supports and PGM-free catalysts for PEM, AEM, & Alkaline applications. Catalysts • PMF Precious-Metal-Free catalyst, completely PGM-free for the lowest possible cost per kilowatt catalyst • PtX on ECS Platinum alloys on ECS (X = cobalt, nickel, niobium) for high power density and fuel quality tolerance applications • EEC PEM, AEM, & Alkaline Engineered Electrolyzer Catalysts, high efficiency and low operating cost Engineered Catalyst Supports • ECS Engineered Catalyst Supports for high power, high durability applications for substantially lower cost than existing support systems, featuring enhanced tolerance for cell reversal – all of which are critical for cost-sensitive applications VariPore TM Product Family: Engineered Catalyst Supports (ECS) Pajarito Powder ECS are designed to maximize performance and cost- effectiveness of catalysts, maximizing the performance of the PGM component. The VariPore TM manufacturing platform allows for discrete manufacturing control of catalysts support characteristics for optimal performance across a range of applications and operating conditions. Figure 1 Nitrogen isotherm shows the range of ECS surface areas and pore volumes possible across several products. Figure 2 Demonstrates highly tunable pore size and distribution range across ECS materials, including nano-, meso- and macro-porous supports. Figure 3 Raman spectroscopy demon- strates the variable graphiticity indicated by G/D ~ 0.8 to 1.2. Figure 4 SEM images of ECS material providing information on the interconnected porous structure (10k and 50k magnification). ECS ECS-based Catalysts ECS Material Characteristics Specification: Value/Range Surface area, BET 400 – 1,000 m 2 /g Pore size 3.5 nm – 40 nm Particle size, DLS 0.4 - 2.0 µm Available dopants Nitrogen, boron, phosphorus and others Other properties G/D ~0.8 - 1.2, pore volume ~0.5 – 3.0 cc/gr Fig. 2 Control of Pore Size & Distribution 0 1 2 3 4 5 6 0 5 10 15 20 Dv(Log d) Pore diameter, nm 4401 0201 4501 3701 3501 3604 3804 1000 1250 1500 1750 2000 Intensity, normalized Rel, 1/cm 4005 2402 3701 XC72 graphite D G Fig. 1 N2 Adsorption/Desorption 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 Voltage (V, iR uncorrrected) Current Density (A/cm 2 ) 0 200 400 600 800 1000 1200 1400 0 0.5 1 cc/gr P/P 0 1602 2402 3701 3804 4005 4201 Fig. 6 Catalyst Fuel Cell Performance Advanced engineered catalyst and catalyst support materials for PEM, AEM & Alkaline Catalyzed ECS Product Characteristics Specification: Value/Range Loading (active mat.) 10 - 85 wt% Crystallite size, XRD 2-7 nm PGM metals/alloys Pt, Pd, Ir, Ru PtX, X (X=Co, Mn, Ni, Nb, Ru, Sn…) PdX, X (X=Co, Mn, Ni, Nb, Ru, Sn…) Other properties Catalyst pH, BET, alloyed/de-alloyed, stabilized ECS-based Catalyst Systems A variety of catalyzed ECS products are available in 10 g to 1 kg batch-levels. Products are available for precious and base metals including various alloys. A range of loadings and crystallite sizes is available, typically 10 to 85 wt% loading and 2 to 7 nm crystallite particle size for precious metal products. Other controllable properties include surface area, catalyst pH, thermal stabilization, surface passivation and functionalization. Alloys, intermetallics and de-alloyed catalyzed ECS products are available. Figure 5 X-Ray Diffractogram (XRD) demonstrates crystallite size and size distribution control of platinum nanoparticles at different weight loadings and for different ECS materials. Figure 6 Proton Exchange Membrane (PEM)-based fuel cell application of Pt/ECS demonstrates excellent performance at low platinum loading and standardized U.S. D.O.E. FCTT protocols. 50 cm 2 LT-PEM MEA 0.15 mg Pt/cm 2 @cathode, 50 wt% Pt/ECS-003701. EW 830 IV -curve according to FCTT @ 80 o C, PAnode/Cathode: 2.5/2.3 barabs, H2 = 1.5, 50 %RH, Air =1.8, 30 %RH Products
Transcript of Advanced engineered catalyst and catalyst support ... · Fig. 4 SEM Images of ECS Materials Fig. 5...
Eng l i sh
Fig. 4 SEM Images of ECS Materials
Fig. 5 X-Ray Diffractograms of Pt/ECS Materials
10 20 30 40 50 60 70 80 902θ
50Pt/2402 2.5 nm30Pt/2402 2.4 nm50Pt/1602 2.8 nm30Pt/1602 2.7 nm50Pt/3701 2.7 nm30Pt/3701 2.0 nm
63 66 69 72
Fig. 3 Raman Spectra of ECS
Pajarito Powder manufactures advanced materials that improve performance, reduce cost and extend the durability of fuel cell and electrolyzer systems. Pajarito Powder utilizes the VariPoreTM proprietary manufacturing platform across product lines to provides flexible materials development and rapid manufacturing scalability of catalysts, ECS catalyst supports and PGM-free catalysts for PEM, AEM, & Alkaline applications.
Catalysts • PMF Precious-Metal-Free catalyst, completely PGM-free for the lowest possible cost per kilowatt catalyst • PtX on ECS Platinum alloys on ECS (X = cobalt, nickel, niobium) for high power density and fuel quality tolerance applications • EEC PEM, AEM, & Alkaline Engineered Electrolyzer Catalysts, high efficiency and low operating cost
Engineered Catalyst Supports • ECS Engineered Catalyst Supports for high power, high durability applications for substantially lower cost than existing support
systems, featuring enhanced tolerance for cell reversal – all of which are critical for cost-sensitive applications
VariPoreTM Product Family:
Engineered Catalyst Supports (ECS) Pajarito Powder ECS are designed to maximize performance and cost-effectiveness of catalysts, maximizing the performance of the PGM component. The VariPoreTM manufacturing platform allows for discrete manufacturing control of catalysts support characteristics for optimal performance across a range of applications and operating conditions.
Figure 1 Nitrogen isotherm shows the range of ECS surface areas and pore volumes possible across several products. Figure 2 Demonstrates highly tunable pore size and distribution range across ECS materials, including nano-, meso- and macro-porous supports. Figure 3 Raman spectroscopy demon-strates the variable graphiticity indicated by G/D ~ 0.8 to 1.2. Figure 4 SEM images of ECS material providing information on the interconnected porous structure (10k and 50k magnification).
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Specification: Value/Range Surface area, BET 400 – 1,000 m2/g Pore size 3.5 nm – 40 nm Particle size, DLS 0.4 - 2.0 µm Available dopants Nitrogen, boron, phosphorus and others Other properties G/D ~0.8 - 1.2, pore volume ~0.5 – 3.0 cc/gr
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Fig. 6 Catalyst Fuel Cell Performance
Advanced engineered catalyst and catalyst support materials for PEM, AEM & Alkaline
Catalyzed ECS Product Characteristics
Specification: Value/Range Loading (active mat.) 10 - 85 wt% Crystallite size, XRD 2-7 nm PGM metals/alloys Pt, Pd, Ir, Ru
PtX, X (X=Co, Mn, Ni, Nb, Ru, Sn…) PdX, X (X=Co, Mn, Ni, Nb, Ru, Sn…)
Other properties Catalyst pH, BET, alloyed/de-alloyed, stabilized
ECS-based Catalyst Systems A variety of catalyzed ECS products are available in 10 g to 1 kg batch-levels. Products are available for precious and base metals including various alloys. A range of loadings and crystallite sizes is available, typically 10 to 85 wt% loading and 2 to 7 nm crystallite particle size for precious metal products. Other controllable properties include surface area, catalyst pH, thermal stabilization, surface passivation and functionalization. Alloys, intermetallics and de-alloyed catalyzed ECS products are available.
Figure 5 X-Ray Diffractogram (XRD) demonstrates crystallite size and size distribution control of platinum nanoparticles at different weight loadings and for different ECS materials. Figure 6 Proton Exchange Membrane (PEM)-based fuel cell application of Pt/ECS demonstrates excellent performance at low platinum loading and standardized U.S. D.O.E. FCTT protocols.
50 cm2 LT-PEM MEA 0.15 mg Pt/cm2 @cathode, 50 wt% Pt/ECS-003701. EW 830 IV -curve according to FCTT @ 80 oC, PAnode/Cathode: 2.5/2.3 barabs, H2 = 1.5, 50 %RH, Air =1.8, 30 %RH
Prod
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Fig. 9 BET Surface Area for Pt IrOx
Fig. 8 X-Ray Diffractograms of Pt and IrOx
Fig. 7 Precious-Metal-Free (PMF) Catalyst Performance
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Precious-Metal-Free (PMF) Catalysts
Completely PGM-free, Pajarito Powder PMF catalysts provide the lowest possible cost per kilowatt of any commercially available catalyst. Pajarito Powder’s materials, featuring uniform structure and low impurity levels, are designed for continuous operation in air, providing moderate power densities for stationary applications. Because PMF is completely precious-metal-free, manufacturing costs at scale are exceptionally low and ideal for applications where lowest capital and operating costs are desired.
Figure 7 Proton Exchange Membrane (PEM)-based fuel cell application of Pajarito Powder’s PMF catalysts for the oxygen reduction reaction. These atomically precise active site materials are engineered for exceptional selectivity and high performance yielding unprecedented power densities at the lowest possible cost.
Below, SEM images of PMF materials magnified from 10 µm and to 1 µm to show detail of porous structure and surface features.
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About Pajarito Powder
Pajarito Powder is a venture-backed startup based in Albuquerque, NM USA.
Pajarito Powder, LLC 3600 Osuna Rd NE Ste 309 Albuquerque, NM 87109 USA www.pajaritopowder.com [email protected] +1.505.293.5367 office +1.505.244.8040 fax
Electrocatalysts for Alkaline and Anion Exchange Membrane Electrolyzers & Fuel Cells Pajarito Powder is developing electrolyzer catalysts under an ARPA-E cooperative agreement (Award DE-AR0000688) and offering evaluation and pre-production catalyst samples to select customers and partners.
• Developing precious metal-free fuel cell/electrolyzer catalysts and electrodes
• Target of USD $50/kW
• 8x cost reduction versus state-of-the-art • Markets for products: power generation coolant, high value chemicals, back-up power, transportation, and energy storage
Partners: Proton OnSite, EWII Fuel Cells, Northeastern University, University of New Mexico with Pajarito Powder as Awardee.
PMF
Intellectual Property Position
Pajarito Powder’s VariPoreTM platform, ECS, and PMF catalysts are covered by nearly 50 U.S. and international patents, both issued and pending, including: 7,678,728 (US), 9,425,464 (US) 2013290185 (Aus) 8,252,711 (US) 9,570,761 (US)
Published papers, presentations, activities and product information
For links to academic papers, presentation, information about products and applications, please visit our website at www.pajaritopowder.com
Applications
PEM/AEM/Alkaline Fuel Cells PEM/AEM/Alkaline Electrolyzer Direct Liquid Fuel Cells High Temperature PEM Fuel Cells Flow Batteries Depolarized Electrodes Microbial Fuel Cells Wastewater Treatment Super Capacitors and Batteries
Not
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Engineered Electrolyzer Catalysts (EEC)
Pajarito Powder manufactures high-performance electrolyzer catalysts explicitly designed for Proton Exchange Membrane (PEM), AEM, and alkaline systems. These products consist of PGM, supported-PGM, and PGM-free catalysts available in 10 g to 1 kg batch-levels.
High quality production platinum black and pre-production iridium oxide products explicitly designed for electrochemical applications are available with electrochemical-relevant specifications.
Figure 8 X-Ray Diffractogram (XRD) illustrates the homogeneous crystal structure of the platinum black (top) and iridium oxide (bottom).
Figure 9 Nitrogen physisorption analysis using Brunauer-Emmett-Teller (BET) shows high surface area of platinum black (bottom) and iridium oxide (top) electrolyzer catalysts.
PMF: Affordable, completely PGM-free, high-performance catalysts
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