Industrial atmosphere trolley furnaces help major South Korean companies sinter battery thin film materials.

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Industrial atmosphere trolley furnaces help major South Korean companies sinter battery thin film materials.

1. Client Introduction

Client Name: A large South Korean company (a leading global battery materials manufacturer)

Industry: New energy battery materials R&D and production

Core Needs: Precise heat treatment of battery thin film materials under a high-purity, controlled atmosphere to optimize the material's microstructure and electrochemical performance

This client is a core company in South Korea's well-known battery industry chain, focusing on the R&D and large-scale production of high-performance battery thin film materials. With the increasing demands for battery energy density, cycle life, and safety from electric vehicles and energy storage systems, the client urgently needs an industrial-grade heat treatment equipment capable of sintering thin film materials under a strictly controlled atmosphere to replace traditional air-environment heat treatment processes, reduce oxidation side reactions, and improve product consistency.

2. Equipment Introduction

Equipment Name: Industrial Atmosphere Trolley Furnace

Model (Example): PT-A1000-2160CS
Operating Temperature: ≤900℃
Temperature Control Accuracy: ±1℃
Effective Furnace Chamber Dimensions: Customized according to customer material specifications (Typical width × depth × height: 1200mm × 1500mm × 1200mm) (Customization available upon request)

Atmosphere Type: Inert atmosphere (N₂, Ar) or specific reactive atmosphere (e.g., H₂/N₂ mixture, CO₂, etc.)
Heating Element: High-quality resistance wire/alloy heating strip, evenly distributed
Furnace Door Structure: Electric trolley type, allowing for smooth loading and unloading of heavy materials; sealing uses silicone/fiber sealing rings + pneumatic clamping

Control System: PLC + The touchscreen supports multi-stage heating-holding-cooling programs and records process curves such as temperature, atmosphere flow rate, and pressure in real time.

Safety features include: over-temperature alarm, furnace pressure interlock, atmosphere under-pressure protection, and emergency exhaust device.

This equipment is specifically designed for high-volume, high-consistency heat treatment of battery thin-film materials. By precisely adjusting the heating rate, holding time, cooling rate, and furnace atmosphere composition, it can achieve target crystal phase growth, interface modification, or residual stress elimination without damaging the thin-film substrate.

3. Equipment Application

Specific Process: Sintering of Battery Thin Film Materials

Processing Stages: Heating → Isothermal Sintering → Controlled Cooling (Protective Atmosphere Throughout)

In the production lines of our Korean customers, this atmosphere-controlled trolley furnace is mainly used for the heat treatment of the following battery thin film materials:

Ceramic Composite Separators: Sintering coatings such as alumina and boehmite under an Ar atmosphere to improve the separator's heat shrinkage resistance and electrolyte wettability.

Solid Electrolyte Membranes: Sintering ceramic electrolyte membranes such as LLZO and LATP under a N₂ or Ar/H₂ mixed atmosphere to obtain high ionic conductivity.

Lithium-Concentrated Negative Electrode Membranes: Heat-treating lithium-containing membranes under a low oxygen partial pressure atmosphere to control lithium activity and improve initial efficiency.

With this equipment, customers have achieved:

An over 80% reduction in oxygen content in thin film materials (compared to air sintering);

A significant reduction in batch-to-batch performance differences;

Effective prevention of film curling and cracking, resulting in a marked improvement in yield.

4. Customer Feedback

"The introduction of the atmosphere trolley furnace has enabled us to truly achieve controlled atmosphere sintering of thin film materials in large-scale production. Temperature uniformity, atmosphere purity, and program control stability all exceeded expectations. In particular, the trolley loading method significantly reduces the labor intensity of manual loading and unloading, and the furnace door has excellent sealing performance. After three months of operation, nitrogen consumption is reduced by approximately 25% compared to similar equipment. The sintered battery films exhibited lower interfacial resistance and higher cycle retention in electrochemical tests. We have already planned to incorporate similar equipment into our next-generation solid electrolyte thin film pilot line."

— Battery Materials Process Technology Team, a large South Korean company

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