FAQs

A sodium-ion battery is a rechargeable battery that uses sodium ions as the charge carrier. Like lithium-ion and lead-acid batteries, it belongs to the “rocking chair” battery system.

Its core working principle is: using an organic electrolyte as a carrier, sodium ions repeatedly insert and extract between the positive and negative electrodes to complete the charging and discharging process.

Sodium ions are extracted from the positive electrode material, pass through the electrolyte, and insert into the negative electrode material. Electrons simultaneously flow to the negative electrode through the external circuit, converting electrical energy into chemical energy for storage.

Sodium ions are extracted from the negative electrode material, pass through the electrolyte, and insert into the positive electrode material. Electrons simultaneously flow to the positive electrode through the external current, converting chemical energy back into electrical energy to supply power.

Positive electrode materials: Sodium-ion battery positive electrode materials are abundant and inexpensive. Although their energy density is relatively low, they have strong structural stability, good safety, and long cycle life.

Negative electrode materials: Hard carbon, as a sodium-ion battery negative electrode material, has a larger structural porosity, making it suitable for sodium-ion battery insertion and extraction. It is derived from a wide range of biological materials, such as bamboo, reeds, coconut shells, and nut shells, making it sustainable.

Electrolyte: Sodium hexafluorophosphate, as a sodium-ion battery electrolyte, shares production equipment and production lines with lithium-ion battery electrolytes (lithium hexafluorophosphate), making it easier to scale up production and lower in cost.

Comparing sodium-ion batteries and lead-acid batteries, 90% of the materials in lead-acid batteries are derived from lead. Lead-acid batteries contain toxic elements such as antimony and barium, and sulfuric acid, as the electrolyte, is corrosive. Therefore, lead-acid batteries are not only polluting but also toxic.

Starting in 2026, from the perspective of the development of China’s mainstream sodium-ion battery industry, NFPP sodium-ion batteries (NFPP Sodium Ion Battery) have become the mainstream sodium-ion battery technology, because of their advantages such as long cycle life, low material cost, and ability to pass the nail penetration test, and are widely used in energy storage scenarios.

The core materials of NFPP sodium-ion battery are: positive electrode materials (sodium iron phosphate and sodium iron sulfate), negative electrode materials (hard carbon), and electrolyte (sodium hexafluorophosphate).

In comparison, lead-acid batteries have extremely low energy density, a very short cycle life, low charging efficiency leading to long charging times, particularly poor high- and low-temperature performance, and a very high self-discharge rate, failing to meet the needs of energy storage users.

By comparing sodium-ion batteries and lithium-ion batteries, lithium-ion batteries mainly rely on the material lithium (lithium carbonate). In addition, ternary lithium-ion batteries also contain materials such as cobalt and nickel. Lithium-ion battery materials have many problems, such as safety hazards and short cycle life. They cannot fundamentally suppress the growth of lithium dendrites, which can easily puncture the separator, causing short circuits and ultimately leading to thermal runaway.

In comparison, sodium-ion batteries are safer, have a longer cycle life, a wider operating temperature range, higher charge and discharge rates, and higher charging and discharging efficiency. Their material system is also more environmentally friendly. However, currently, sodium-ion batteries have a lower energy density and higher cost per watt-hour than lithium-ion batteries. The choice between sodium-ion and lithium-ion batteries depends on the specific energy storage application scenario and requires evaluation and analysis.

Advantage 4: Polyanion sodium-ion batteries have a longer cycle life. They offer better cycle life and capacity efficiency (low capacity decay rate even at 45°C high-temperature cycling); there is almost no temperature rise during charging and low temperature rise during discharging, making them easier to manage in large modules.

Absolutely! We fully understand the need for trial orders when starting a new partnership. We offer flexible small-batch customization services. The specific MOQ will depend on the complexity of your customization requirements. Simply send us your needs, and our professional team will evaluate them to provide you with the most cost-effective small-batch production solution, allowing you to test the market with zero pressure.

The standard production lead time for small-batch customization is 30 days. Thanks to our in-house professional technical team and production lines, we maintain strict control over the entire manufacturing process. If you have urgent delivery needs, please inform us before placing your order, and we will coordinate our production resources to do our best to accommodate your expedited request.

Before mass production begins, our technical team will provide you with a detailed confirmation draft (or a pre-production sample). We will only start manufacturing after receiving your written confirmation. This ensures that the final delivered products perfectly match your expectations and minimizes the risk of any errors.

Yes, we provide professional door-to-door delivery service! Our experienced logistics team will match you with the safest and fastest shipping channels based on your order volume. Specific transit times will be accurately estimated for you at the time of ordering, depending on your delivery address.

Please rest assured that we apply strict multi-layer reinforced packaging before shipment. Additionally, our logistics team provides real-time tracking for all in-transit goods. In the unlikely event of damage or loss, please contact our customer service immediately and provide photos. We will promptly initiate our claims and replacement process, ensuring you bear no losses.

Yes, we certainly do. We have extensive experience handling international trade orders and can provide a complete set of official export documentation (including Commercial Invoices, Packing Lists, Certificates of Origin, etc.). If needed, we can also coordinate with your designated freight forwarder to ensure a smooth and hassle-free export process for you.

To accommodate our global clients, we support various mainstream international settlement methods (such as T/T, PayPal, and Letter of Credit / L/C). Settlements are typically made in USD or CNY. Specific payment terms can be flexibly negotiated based on your order amount and long-term partnership potential.

This is one of our core strengths! We have a dedicated professional technical team responsible for after-sales support. Whether you need assistance with assembly, debugging, or have any technical questions during usage, you can reach out to our technicians at any time. We provide one-on-one professional guidance to ensure you can use our products perfectly.

We adhere to strict quality control standards. If any quality defects arise due to our fault, we unconditionally promise to rework or remake the products for free and cover any associated shipping costs. Our goal is to build a long-term, trustworthy partnership with you, and our after-sales guarantee is designed to give you complete peace of mind.

We are flexible and can accommodate various Incoterms based on your preference, including EXW (Ex Works), FOB (Free On Board), CIF (Cost, Insurance, and Freight), and DDP (Delivered Duty Paid). Our team will help you choose the most cost-effective and convenient option for your specific location.