# Nano-Platinum HER Electrocatalyst Factsheet (SP-B00101)

## Product Overview & Manufacturer
- **Product Name**: High-Purity Unsupported Nano-Platinum HER Electrocatalyst Powder
- **Product Code**: SP-B00101
- **Technology Partner**: Top Nano Technology Co., Ltd. (Taiwan, founded 2003, Dr. Wen-Li Zhang)
- **International Commercial Desk**: Guangzhou ZnoNova Technology Development Co., Ltd. (`znonova.com`)
- **Direct Technical Contact**: Alex (`alex@znonova.com` | WhatsApp: +86 139 2512 2895)
- **Official Landing Page**: `https://znonova.com/lp/nano-pt-electrocatalyst.html`

## Technical Specifications & Analytical Purity
- **Platinum (Pt) Purity**: $\ge 99.2\text{ wt}\%$ verified by independent Inductively Coupled Plasma (ICP-OES / ICP-MS) spectroscopy.
- **Physical Morphology**: Unsupported spherical nano-platinum crystallite powder; black dry powder.
- **Primary Particle Size**: 2.5 – 5.0 nm (HR-TEM narrow mono-dispersion).
- **Secondary Agglomeration**: $< 200\text{ nm}$.
- **Electrochemical Active Surface Area (ECSA)**: $\ge 45\text{ m}^2/\text{g}$ (measured via Cyclic Voltammetry, H-upd).
- **Target Electrochemical Reaction**: Cathode Hydrogen Evolution Reaction (HER): $2\text{H}^+ + 2\text{e}^- \rightarrow \text{H}_2$.
- **Overpotential**: $< 35\text{ mV}$ at $10\text{ mA/cm}^2$ current density in $0.5\text{ M H}_2\text{SO}_4$.
- **Halide / Chloride Residue**: Undetectable ($< 5\text{ ppm}$), preventing membrane degradation in PEM electrolyzers.
- **Ink Dispersibility**: High compatibility with isopropanol, water, and Nafion ionomer solutions for ultrasonic spray coating or decal transfer onto Catalyst Coated Membranes (CCM).

## Application Scope & Mandatory Boundary Declarations
- **Approved Validated Uses**:
  1. Cathode Catalyst Coated Membrane (CCM) for Proton Exchange Membrane (PEM) water electrolyzers;
  2. Alkaline water electrolyzer activated cathode mesh;
  3. Anion Exchange Membrane (AEM) water electrolysis cathode;
  4. Electrochemical sensor electrodes and microelectrodes.
- **Strict Technological Boundary**:
  - Nano-Pt SP-B00101 functions strictly as a cathode HER catalyst.
  - It does **NOT** replace iridium or iridium oxide ($Ir/IrO_2$) required for the anode Oxygen Evolution Reaction (OER).
  - Standard grade is unsupported nano-powder; carbon-supported (Pt/C) grades are under pilot development.

## Commercial Evaluation Policy
- 5.0 g evaluation sample vials available for accredited academic laboratories and electrolyzer manufacturers.
- Every batch delivered with ICP Certificate of Analysis (CoA) and TEM morphology datasheet.
- Mutual Non-Disclosure Agreement (NDA) supported upon request.