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Battery Laboratory Q&A VOL.005: Which technology produces better cell performance, stacking process or winding process?

2025-09-09

There is no absolute "better" between the stacking process and the winding process; each has its own technical characteristics and suits different battery demand scenarios. The core differences lie in structural design, performance, and mass production features. Winding is an efficient standardized production of "one-roll forming," while stacking is a precise customized process of "layer-by-layer stacking." Wuhan Chaodian Technology compares and analyzes the differences between the stacking and winding processes from the following dimensions.

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This year's Gaokao chemistry question from Hubei is quite interesting...

2025-07-04

In the 2025 Hubei Gaokao (College Entrance Examination) chemistry paper, a question about the "lithium bis(trifluoromethylsulfonyl)imide lithium replenishment mechanism" stumped some candidates.

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20+ Common Problems, Defects, and Solutions in Battery Coating Processes

2025-06-16

In the coating process practice of the battery R&D laboratory, problems such as slurry layering and equipment clogging frequently occur, seriously affecting the quality of the electrode and the efficiency of the experiment. The following deeply analyzes more than 20 typical process defects and optimization paths from four technical dimensions: equipment, materials, microstructure, and special processes. Help you efficiently locate problems and optimize experimental steps.

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What are the bottlenecks in the mass production of solid-state batteries? How can dry-film electrode technology overcome the two major challenges of coating cracks and solvent residue?

2025-06-10

Solid-state battery materials are currently a core bottleneck hindering the commercialization of all-solid-state batteries due to issues such as high interfacial impedance, uneven electrolyte coverage, and difficulties in mass production. Currently, innovation in electrode manufacturing processes is the key to breaking through this bottleneck. Traditional wet processes face problems such as solvent residue and interfacial cracks in solid-state electrolyte coating, while dry processes are becoming the industry focus due to their advantages of being solvent-free and highly compatible.

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Understanding in One Reading | From Lab to Production Line: An Analysis of Dry/Wet Pulp Processes for Electrodes

2025-05-28

Battery performance is 70% determined by the electrode slurry. The core objective of the slurry preparation process is to achieve "uniform dispersion of three phases" - with changes in temperature, viscosity, and environment, active materials (energy storage main body, responsible for storing charge, such as lithium iron phosphate in the positive electrode and graphite in the negative electrode), conductive agents (charge pathways, such as carbon nanotubes), and binders (structural support, such as PVDF) form a stable suspension in a solvent (mixed into a slurry, such as NMP), which is finally coated to form an electrode with an ideal porous structure. This article interprets the two major processes of battery slurry preparation: "dry method slurry preparation" and "wet method slurry preparation", understanding the core differences in their principles. Which slurry preparation process is more suitable for your project? How to balance cost and efficiency? Is the technical threshold high? Help you deal with project decisions!

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Fundamentals of Blade Coating Technology | Key Processes and Solutions for Common Problems in Laboratory Film Making

2025-04-25

In the lab, electrode coating often suffers from issues such as uneven coating, bubbles, pinholes, and drying cracks due to factors like rudimentary equipment, raw material contamination, unstable coating processes, non-standard operation, and improper drying environments. How can a beginner in battery research address these problems?

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