Lithium Battery

Grading and matching is the final quality gate in lithium battery manufacturing — the last step before cells are assembled […]

After coating and calendering, the electrode sheet is a continuous ribbon of active material on metal foil — hundreds of

Every lithium battery has an anode. For 30 years, that anode was graphite. For the next 30 years, it probably

Electrolyte filling—the step where liquid electrolyte is injected into a sealed or semi-sealed battery cell—looks simple. A needle dispenses liquid

When a lithium-ion battery reaches end of life, everyone focuses on the metals—cobalt, nickel, lithium. The electrolyte? Usually burned off

The cathode is 30-40% of a lithium-ion cell’s cost and determines its voltage, capacity, safety characteristics, and roughly half its

China Watch is a weekly briefing on under-reported regulatory developments from China’s environmental and battery sectors. What Happened On June

Every Monday, China Watch brings you one under-the-radar regulatory or industry development from China that will matter to your business

After coating and drying, your electrode is a porous, fragile film of active material particles loosely bonded to a metal

Every lithium battery cell—whether it powers a power tool, an EV, or a grid storage system—starts with the same two

在锂电池制造链上，匀浆是第一步，也是良率的第一个分水岭。 涂布机再好、辊压机再精密、化成柜再先进——如果浆料不对，后面的每一步都是在做”损伤控制”。我见过一条产线因为浆料粘度漂移的问题，涂布良率从95%掉到82%，持续了两周才找到根因。两周，每天少出3000颗电芯的合格品。 这篇文章不讲匀浆的基础原理（那部分在[前一篇](https://greenengguide.com/lithium-battery-slurry-preparation)已经写过了），而是聚焦在参数优化上——固含量、粘度、分散性这三个变量如何相互制约，以及如何在它们之间找到真正适合你产线的平衡点。 为什么是这三个参数？ 匀浆有十几个可调变量：搅拌速度、搅拌时间、加料顺序、温度、真空度、固含量、溶剂比例……但最终决定浆料能不能涂好的，只有三个输出指标： 1. 固含量（Solid Content）——浆料里有多少活性物质2. 粘度（Viscosity）——浆料流动的难易程度3. 分散性（Dispersion Quality）——颗粒在浆料中的均匀程度 所有其他参数（转速、时间、温度等）都是为这三个输出指标服务的。问题是，这三个指标之间存在天然的冲突： – 提高固含量，粘度会急剧上升，分散性下降– 过度分散（长时间高剪切），粘度可能反弹（过分散效应）– 降低粘度（加溶剂）会降低固含量，影响涂布面密度 这就是”三角平衡”——你不可能同时最大化三个指标，必须根据你的涂布工艺找到最优解。 固含量：不是越高越好，也不是越低越安全 固含量决定了什么？ 固含量直接影响三件事：