BVS V-type Single-pass AAO Template

Figure 1. Schematic diagram of the structure of the V-hole AAO template.

D_int is the hole center spacing, D_t is the hole top diameter, and D_b hole bottom diameter.

Figure 2. (a) low magnification (b) medium magnification (c) high magnification (d) cross-sectional SEM diagram of BVS450450-900nm.

Figure 3. Type BVS450450-1500nm V-shaped hole AAO template cross-sectional SEM diagram.

Figure 4. Model BVS450450-400nm V-shaped hole AAO template cross-sectional SEM diagram.

Figure 5. Model BVS125125-250nm V-shaped hole AAO template cross-sectional SEM diagram.

The V-shaped hole AAO template, also known as the taper-nanopore or inverted conical (inverse-nanocone) AAO template, is similar to the aluminum-based single-pass AAO template, and its structure is shown in Figure 1. From the front, the arrangement of the hole also has a short-range ordered structure, the ordered area is micron-level, from the cross-section, its hole upper part is large, the lower part is small, gradually transitioning, similar to an inverted cone, the bottom of the hole retains the barrier layer, the lower part of the barrier layer is not oxidized aluminum base. As shown in Figure 2, the hole center spacing of model BVS450450-900nm is about 450nm, the diameter of the V-shaped orifice is about 450nm, the bottom pore diameter is about 100nm, the pore depth is about 900nm, and the hole depth of the pore diameter hole depth has a certain distribution width and measurement error.

Figure 6. V-shaped hole AAO template product physical drawing.

Figure 7. V-hole AAO template product placement direction diagram.

The front of the V-shaped hole AAO template is an effective AAO porous structure. The product packaging box is affixed with the company logo on the lid, and the inner film of the box is facing up, as shown in Figure 7. Due to the support of the aluminum base, like the aluminum base AAO (single way AAO), the V-shaped hole AAO has higher strength, and there is also a layer of oxide on the back, with a total thickness of about 0.2mm, which can be clamped and slightly bent with tweezers, and ultrasonic cleaning can be carried out. Be careful not to touch the membrane surface directly with your fingers, otherwise grease or other foreign objects on your hands will easily get on the membrane surface.

The upper surface of the V-shaped hole AAO template product is an effective AAO layer, and there is also a layer of porous alumina on the back, but the back layer of alumina is thinner than the effective AAO layer, and the quality is poor, please do not use this layer of oxide as a porous template. The V-shaped pore AAO membrane can be slowly dissolved and removed by 5wt% phosphoric acid (40 °C), or 5~10wt.% NaOH (room temperature) for rapid dissolution removal.

V-shaped pore AAO templates can be characterized by SEM or AFM. Since AAO is very thin, there is no need to spray gold or carbon when doing SEM testing, and it can be directly detected. When observing the cross-section, the membrane can be gently bent to 90°, and a fresh section can be formed at the bend for observation.

The appearance and thickness of the V-shaped hole AAO template are the same as the single-pass AAO template with similar hole depth, the total thickness is about 0.2mm, there is also an oxide layer on the back, an aluminum layer in the middle, and an effective V-shaped AAO on the front, and the AAO side is facing up when packing.

Note: Our AAO products (including V-shaped hole AAO) hole arrangement is short-range ordered, the order area is micron-level, not as long-range ordered as in the references, please know before purchasing.

Tips:

Inside the box, a round separator sheet is placed between the AAO film, the diameter of the paper piece is 28mm, please do not confuse it with AAO film. Inside the box, the front side of the V-hole AAO is placed upwards, please pay attention to the distinction.

Note: Pore diameter refers to the diameter of the hole, and interpore distance refers to the center spacing of the hole.

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Partial references citing our materials (from Google Scholar)

Carbon Dioxide Reduction

1. ACS Nano Strain Relaxation in Metal Alloy Catalysts Steers the Product Selectivity of Electrocatalytic CO₂ Reduction

The bipolar membrane (Fumasep FBM) in this paper was purchased from SCI Materials Hub, which was used in rechargeable Zn-CO₂ battery tests. The authors reported a strain relaxation strategy to determine lattice strains in bimetal MNi alloys (M = Pd, Ag, and Au) and realized an outstanding CO₂-to-CO Faradaic efficiency of 96.6% with outstanding activity and durability toward a Zn-CO₂ battery.

2. Front. Chem. Boosting Electrochemical Carbon Dioxide Reduction on Atomically Dispersed Nickel Catalyst

In this paper, Vulcan XC-72R was purchased from SCI Materials Hub. Vulcan XC 72R carbon is the most common catalyst support used in the anode and cathode electrodes of Polymer Electrolyte Membrane Fuel Cells (PEMFC), Direct Methanol Fuel Cells (DMFC), Alkaline Fuel Cells (AFC), Microbial Fuel Cells (MFC), Phosphoric Acid Fuel Cells (PAFC), and many more!

3. Adv. Mater. Partially Nitrided Ni Nanoclusters Achieve Energy-Efficient Electrocatalytic CO₂ Reduction to CO at Ultralow Overpotential

An AEM membrane (Sustainion X37-50 Grade RT, purchased from SCI Materials Hub) was activated in 1 M KOH for 24 h, washed with ultra-purity water prior to use.

4. Adv. Funct. Mater. Nanoconfined Molecular Catalysts in Integrated Gas Diffusion Electrodes for High-Current-Density CO₂ Electroreduction

In this paper (Supporting Information), an anion exchanged membrane (Fumasep FAB-PK-130 obtained from SCI Materials Hub (www.scimaterials.cn)) was used to separate the catholyte and anolyte chambers.

SCI Materials Hub: we also recommend our Fumasep FAB-PK-75 for the use in a flow cell.

5. Appl. Catal. B Efficient utilization of nickel single atoms for CO₂ electroreduction by constructing 3D interconnected nitrogen-doped carbon tube network

In this paper, the Nafion 117 membrane was obtained from SCI Materials Hub.

6. Vacuum Modulable Cu(0)/Cu(I)/Cu(II) sites of Cu/C catalysts derived from MOF for highly selective CO₂ electroreduction to hydrocarbons

In this paper, Proton exchange membrane (Nafion 117), Nafion D520, and Toray 060 carbon paper were purchased from SCI Materials Hub.

7. National Science Review Confinement of ionomer for electrocatalytic CO2 reduction reaction via efficient mass transfer pathways

An anion exchange membrane (PiperION-A15-HCO3) was obtained from SCI Materials Hub.

8. Catalysis Communications Facilitating CO2 electroreduction to C2H4 through facile regulating {100} & {111} grain boundary of Cu2O

Carbon paper (TGPH060), membrane solution (Nafion D520), and ionic membrane (Nafion N117) were obtained from Wuhu Eryi Material Technology Co., Ltd (a company under SCI Materials Hub).

Batteries

1. J. Mater. Chem. A Blocking polysulfides with a Janus Fe3C/N-CNF@RGO electrode via physiochemical confinement and catalytic conversion for high-performance lithium–sulfur batteries

Graphene oxide (GO) in this paper was obtained from SCI Materials Hub. The authors introduced a Janus Fe3C/N-CNF@RGO electrode consisting of 1D Fe3C decorated N-doped carbon nanofibers (Fe3C/N-CNFs) side and 2D reduced graphene oxide (RGO) side as the free-standing carrier of Li2S6 catholyte to improve the overall electrochemical performance of Li-S batteries.

2. Joule A high-voltage and stable zinc-air battery enabled by dual-hydrophobic-induced proton shuttle shielding

This paper used more than 10 kinds of materials from SCI Materials Hub and the authors gave detailed properity comparsion.

The commercial IEMs of Fumasep FAB-PK-130 and Nafion N117 were obtained from SCI Materials Hub.

Gas diffusion layers of GDL340 (CeTech) and SGL39BC (Sigracet) and Nafion dispersion (Nafion D520) were obtained from SCI Materials Hub.

Zn foil (100 mm thickness) and Zn powder were obtained from the SCI Materials Hub.

Commercial 20% Pt/C, 40% Pt/C and IrO2 catalysts were also obtained from SCI Materials Hub.

3. Journal of Energy Chemistry Vanadium oxide nanospheres encapsulated in N-doped carbon nanofibers with morphology and defect dual-engineering toward advanced aqueous zinc-ion batteries

In this paper, carbon cloth (W0S1011) was obtained from SCI Materials Hub. The flexible carbon cloth matrix guaranteed the stabilization of the electrode and improved the conductivity of the cathode.

4. Energy Storage Materials Defect-abundant commercializable 3D carbon papers for fabricating composite Li anode with high loading and long life

The 3D carbon paper (TGPH060 raw paper) were purchased from SCI Materials Hub.

5. Nanomaterials A Stable Rechargeable Aqueous Zn–Air Battery Enabled by Heterogeneous MoS2 Cathode Catalysts

Nafion D520 (5 wt%), and carbon paper (GDL340) were received from SCI-Materials-Hub.

6. SSRN An Axially Directed Cobalt-Phthalocyanine Covalent Organic Polymer as High-Efficient Bifunctional Catalyst for Zn-Air Battery

Carbon cloth (W0S1011) and other electrochemical consumables required for air cathode were provided by SCI Materials Hub.

Oxygen Reduction Reaction

1. J. Chem. Eng. Superior Efficiency Hydrogen Peroxide Production in Acidic Media through Epoxy Group Adjacent to Co-O/C Active Centers on Carbon Black

In this paper, Vulcan XC 72 carbon black, ion membrane (Nafion N115, 127 μL), Nafion solution (D520, 5 wt%), and carbon paper (AvCarb GDS 2230 and Spectracarb 2050A-1050) were purchased from SCI Materials Hub.

2. Journal of Colloid and Interface Science Gaining insight into the impact of electronic property and interface electrostatic field on ORR kinetics in alloy engineering via theoretical prognostication and experimental validation

The 20 wt% Pt3M (M = Cr, Co, Cu, Pd, Sn, and Ir) were purchased from SCI Materials Hub. This work places emphasis on the kinetics of the ORR concerning Pt3M (M = Cr, Co, Cu, Pd, Sn, and Ir) catalysts, and integrates theoretical prognostication and experimental validation to illuminate the fundamental principles of alloy engineering.

Water Electrolysis

1. International Journal of Hydrogen Energy Gold as an efficient hydrogen isotope separation catalyst in proton exchange membrane water electrolysis

The cathodic catalysts of Pt/C (20 wt%, 2–3 nm) and Au/C (20 wt%, 4–5 nm) were purchased from SCI Materials Hub.

2. Small Science Silver Compositing Boosts Water Electrolysis Activity and Durability of RuO2 in a Proton-Exchange-Membrane Water Electrolyzer

Two fiber felts (0.35 mm thickness, SCI Materials Hub) were used as the porous transport layers at both the cathode and the anode.

3. Advanced Functional Materials Hierarchical Crystalline/Amorphous Heterostructure MoNi/NiMoOx for Electrochemical Hydrogen Evolution with Industry-Level Activity and Stability

Anion-exchange membrane (FAA-3-PK-130) was obtained from SCI Materials Hub website.

Fuel Cells

1. Polymer Sub-two-micron ultrathin proton exchange membrane with reinforced mechanical strength

Gas diffusion electrode (60% Pt/C, Carbon paper) was purchased from SCI Materials Hub.

Characterization

1. Chemical Engineering Journal Electrochemical reconstitution of Prussian blue analogue for coupling furfural electro-oxidation with photo-assisted hydrogen evolution reaction

An Au nanoparticle film was deposited on the total reflecting plane of a single reflection ATR crystal (SCI Materials Hub, Wuhu, China) via sputter coater.