High Performance Battery Materials

Cathodes, Anodes, and Electrolytes

Niobium Oxide Tapes

Anode Electrode Sheets

Niobium Oxide (Nb2O5) is a new electrode material with pseudocapacitive charge storage being introduced to the market for the first time as a potential anode material. It is capable of exceptionally high rate charge as well as discharge (6 – 10C), with good cycling stability (1,000 – 3,000 cycles) and minimal heat generation during high-rate charge-discharge. The unique architecture of the oxide material enables rapid lithium diffusion on a macro and micro-scale enabling enhanced rate performance.

NANOMYTE® BE-400E is a cast electrode tape of Niobium oxide powder. The standard anode tape is cast on 5 inch x 10 inch sheets of copper foil, single-side coated with an 81% active material loading. Our tapes can also be customized to accommodate different active material loadings, coating thickness, binder type (aqueous/non-aqueous), and binder content, as well as choice of current collector.

Select a tab below to learn more.

Electrode Sheets Brochure

Product Specifications

NANOMYTE® BE-400E Specifications:


Active Material Characteristics

  • Product Description: Niobium Oxide electrode sheet
  • Formula: Nb2O5
  • Purity: > 99%
  • Average Particle Size (APS): 30 – 70nm

Standard Electrode Tape Characteristics

  • Current Collector: Copper
  • Current Collector Thickness: 10 μm
  • Sheet Size: 5 in x 10 in (12.7 cm x 25.4 cm)
  • Areal Capacity: 1.44 mAh/cm2 ± 5%
  • Tape Thickness: 110 μm ± 5% (excluding current collector)
  • Standard Tape Composition: 81% Niobium Oxide (active material); 6% CMC-SBR (binder); 13% Carbon (conductive)

Electrical Characteristics

  • Average Voltage vs. Li/Li+: 1.6V
  • Minimum Capacity at 0.05C: 140 mAh/g
  • Nominal Capacity at 0.05C: ≥ 150 mAh/g

Recommended Operating Conditions

  • Maximum Charge Voltage: 3V vs. Li/Li+
  • Maximum Discharge Voltage: 1V vs. Li/Li+
  • Maximum Charge Current: 10C (6C recommended)
  • Maximum Discharge Current: 10C (6C recommended)

Complete Specification Sheet: NANOMYTE® BE-400E (pdf) »

Safety Information

Product Safety Information

Tape Composition / Materials:

Percentage % Material Hazards
81% Niobium Oxide (active material) Causes skin irritation; Causes serious eye irritation; May cause respiratory irritation.
6% CMC-SBR (water-based binder) Not a hazardous substance or mixture.
13% Carbon mixture* (conductive carbon) Carcinogenicity – suspected of causing cancer

*Mixture includes 2% Super P, 2% carbon nanofiber, and 9% graphite nanosheet.

Precautions for Safe Handling:
Appropriate personal protective equipment should be used at all times. Avoid contact with eyes and skin. Ensure adequate ventilation and avoid inhalation of dusts. Wash hands thoroughly after handling.

Conditions for Safe Storage:
Store in a dry and sealed pouch or under inert atmosphere, away from heat. Avoid moisture.

For complete information on the safe use of this material, please refer to the Safety Data Sheet » (coming soon)

NOTE: NEI Corporation believes that the information provided is an accurate description of the typical use of the product. However, NEI disclaims any liability for incidental or consequential damages, which may result from the use of their products that are beyond its control. Employers should use this information only as a supplement to other information gathered by them and should make independent judgment of suitability of this information to ensure proper use and protect the health and safety of employees. Therefore, it is the user’s responsibility to thoroughly test the product in their particular application to determine its performance, efficacy, and safety. Nothing contained herein is to be considered as permission or a recommendation to infringe any patent or any other intellectual right.

Frequently Asked Questions

Frequently Asked Questions

NANOMYTE® BE-400E electrode sheets are made and shipped directly from NEI and are available for purchase in ready-to-ship packages of 2, 5, or 10 sheets (larger quantities available upon request). Standard Niobium Oxide electrode sheets are cast single-side on 5 inch x 10 inch sheets of aluminum, with 81% Niobium Oxide (active material), 6% CMC-SBR (binder), 13% Conductive Carbon.

Where can I find pricing?

To request pricing or a quote, please fill out our quote form on the next tab.

Where can I find the specifications?

A list of specification sheets for all of our electrode sheets can be found on the Battery Spec Sheets page »

Can any of the tape specifications be modified?

Yes, we can modify the active material loading, coating thickness, binder type (aqueous/non-aqueous), and binder content, as well as choice of current collector (additional fees may apply).

Where can I find the Material Safety Data Sheet?

A list of available Safety Data Sheets can be found on our MSDS page »

Do you provide any additional materials or compositions not listed?

If you are looking for a particular material or composition not found in our list of products, we may be able to make it for you. As a Specialty Materials company, NEI specializes in producing non-commodity cathode, anode, and solid electrolyte battery materials with compositions and powder morphologies that are not readily readily found in the market.

Can I have a free sample to see if it works for my application?

Unfortunately, we are unable to provide free samples for a number of reasons.

What is the minimum quantity order for your electrode sheets?

The minimum order quantity is 2 sheets per material composition and specification.

How can I place an order?

NEI sells and ships it’s battery materials directly from Somerset, NJ (USA). We accept company and university purchase orders, or we can provide you with an order form. We can also accept orders through third-party buyers. For customers in Korea or Japan, we will put you in touch with our respective representative in your country, and you can place an order directly through them.

What kinds of payments do you accept?

NEI accepts several forms of payment:

  • Domestic – Checks (USD), ACH bank transfers, Credit Cards
  • International – Wire transfer, Electronic Funds Transfer (EFT), Credit Cards

Accepted Credit Cards: Visa, MasterCard, Discover, or American Express

What are your payment terms?

For most new customers, we require a prepayment or credit card, until a relationship is established. After that, we accept NET 30 payment terms, from date of invoice. Invoices are sent at the time of shipment.

How else can I contact you?

Email: You can send us a message, and one of our experts will be happy to answer any of your technical questions regarding our battery products and services.

Give us a Call: +1 (732) 868-3141

Business Hours: Monday – Friday, 8:30 am to 5:30 pm (ET)

Additional questions & answers can also be found on our Frequently Asked Questions Page.

Request Quote

Quote Request Form

To submit a request for pricing or a formal quote, please complete the Quote Request form and someone will be in touch with you soon. We can also customize tapes to your specifications – such as loading, thickness, binder, & collector – for an additional fee (select “Custom” under Specifications on the form).

NEI accepts purchase orders (check, wire, or bank transfer) and credit cards. Please note that by entering your information and submitting this form, you are agreeing to the terms of our privacy policy

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