In recent years, the demand for efficient and reliable battery technologies has surged, making battery separators a critical component in energy storage systems. This guide delves into the intricacies of battery separators, particularly within the context of China’s rapidly evolving market. Understanding these components is essential for anyone involved in battery manufacturing or research.

Readers can expect to explore the various types of battery separators, their materials, and manufacturing processes. We will also discuss the role of separators in enhancing battery performance, safety, and longevity. Additionally, the guide will highlight the latest innovations and trends shaping the industry in China.

By the end of this guide, readers will gain a comprehensive understanding of battery separators, their significance in the energy landscape, and the challenges and opportunities present in the Chinese market. This knowledge will empower stakeholders to make informed decisions in their respective fields, whether in production, investment, or research.

Top 10 Lithium Battery Separator Suppliers in China

The lithium battery separator is a crucial component in lithium-ion batteries, acting as a barrier between the anode and cathode to prevent short circuits while allowing lithium ions to pass through. As the demand for lithium batteries continues to rise, particularly in electric vehicles and energy storage systems, the importance of high-quality separators cannot be overstated. This article explores the top 10 lithium battery separator suppliers in China, providing insights into their technical features, types, and market positions.

Overview of Lithium Battery Separators

Lithium battery separators are typically made from polymer materials and are designed to withstand high temperatures and chemical reactions. They play a vital role in ensuring the safety and efficiency of lithium-ion batteries. The separator’s performance directly impacts the battery’s charging and discharging efficiency, cycle life, and overall safety.

Technical Features of Lithium Battery Separators

The following table summarizes the key technical features of lithium battery separators:

Feature	Description
Insulation	Prevents short circuits between anode and cathode.
Chemical Stability	High resistance to corrosion, enhancing the separator’s lifespan.
Thermal Stability	Reduces the risk of melting at high temperatures.
Tensile Strength	Prevents deformation under stress.
Porosity	Higher porosity improves charge and discharge efficiency.
Thickness	Thinner separators reduce internal resistance, enhancing performance.
Puncture Strength	Prevents lithium branches from causing short circuits.

Types of Lithium Battery Separators

Lithium battery separators can be classified into two main types based on their production processes: dry-process and wet-process separators. The following table compares these two types:

Type	Dry-Process Separators	Wet-Process Separators
Raw Material	Polypropylene (PP)	Polyethylene (PE)
Tensile Strength	Higher (1500 kg/cm²)	Lower (150 kg/cm²)
Puncture Resistance	Better (600 gf)	Weaker (250 gf)
Thickness	5μm – 30μm	12μm – 30μm
Production Process	More complex	Simpler
Application	High-end power batteries, 3C batteries	Medium and low-end power batteries, energy storage
Cost	Higher	Lower

Top 10 Lithium Battery Separator Suppliers in China

Shanghai SEMCORP
Established: April 27, 2010
Location: Shanghai, China
Website: www.semcorpglobal.com
Overview: SEMCORP is a leading manufacturer of lithium-ion battery separators, specializing in high-performance wet-process separators. They have a significant market share and supply to major global battery manufacturers.
SENIOR
Established: September 17, 2003
Location: Guangdong, China
Website: www.senior798.com
Overview: SENIOR has a comprehensive product range, including dry, wet, and coated separators. They are known for their innovative technologies and have established a strong presence in both domestic and international markets.
Sinoma Lithium Battery Separator
Established: March 10, 2016
Location: Shandong, China
Website: www.cnbmlbs.com
Overview: Sinoma specializes in high-performance lithium battery separators, focusing on wet-process production. Their products are widely used in power batteries and energy storage systems.
ZIMT
Established: August 21, 2012
Location: Shenzhen, China
Website: www.zimt.com.cn
Overview: ZIMT is a high-tech enterprise that produces lithium-ion battery separators. They focus on R&D and have a growing production capacity, catering to various applications.

GELLEC
Established: February 5, 2010
Location: Hebei, China
Website: www.gellec.com
Overview: GELLEC is known for its wet-process separators and has a diverse product range, including ultra-thin and high-strength separators. They have established partnerships with major battery manufacturers.
PTL
Established: November 6, 2012
Location: Shanghai, China
Website: www.putailai.com
Overview: PTL is a major player in the separator coating industry and has a strong focus on R&D. They supply to leading global battery manufacturers and are expanding their production capacity.
JINHUI HI-TECH
Established: February 16, 2006
Location: Guangdong, China
Website: www.jinhuigk.com
Overview: JINHUI HI-TECH specializes in lithium-ion battery separators and has a reputation for high-quality products. They were the first in China to produce separators using the wet process.
HORIZON
Established: November 10, 2017
Location: Jiangsu, China
Website: www.horizon-tech.cn
Overview: HORIZON focuses on high-end lithium battery separators and has a significant production capacity. Their products are used in various applications, including energy storage and electric vehicles.
HUIQIANG NEW ENERGY
Established: January 28, 2011
Location: Henan, China
Website: www.hqnem.com
Overview: HUIQIANG specializes in lithium-ion battery separators and has a strong market presence. They are known for their innovative products and have established partnerships with major battery manufacturers.
HongTu Separator
Established: March 18, 2005
Location: Jilin, China
Website: www.htldgm.cn
Overview: HongTu is a high-tech enterprise that produces various types of lithium battery separators. They have a strong focus on R&D and have developed several patented technologies.

Conclusion

The lithium battery separator market in China is rapidly evolving, with numerous suppliers competing for market share. Companies like SEMCORP, SENIOR, and Sinoma are leading the way with innovative technologies and high-quality products. As the demand for lithium batteries continues to grow, these suppliers are well-positioned to meet the needs of the industry.

FAQs

1. What is the role of a lithium battery separator?
The lithium battery separator acts as a barrier between the anode and cathode, preventing short circuits while allowing lithium ions to pass through.

2. What are the main types of lithium battery separators?
The main types are dry-process and wet-process separators, each with distinct characteristics and applications.

3. Why is the thickness of a separator important?
Thinner separators reduce internal resistance, improving the battery’s charge and discharge performance.

4. How do I choose a lithium battery separator supplier?
Consider factors such as product quality, production capacity, technological innovation, and customer reviews.

5. Where can I find more information about lithium battery separators?
You can visit websites like www.takomabattery.com, batteryswapstation.com, and youmecs.com for detailed insights and supplier information.