Energy storage electrode processing process

What is a dry process in electrode fabrication?

The goal of utilizing a dry process in electrode fabrication is to achieve an areal capacity greater than 4 mAh/cm 2 while also attaining an energy density above 400 Wh/kg [66, 67]. This targeted approach, which avoids liquid solvents in manufacturing, seeks to enhance energy storage capabilities.

Why is electrode processing important for lithium-ion batteries?

For batteries, the electrode processing process plays a crucial role in advancing lithium-ion battery technology and has a significant impact on battery energy density, manufacturing cost, and yield.

What is a battery electrode manufacturing procedure?

The electrode manufacturing procedure is as follows: battery constituents, which include (but are not necessarily limited to) the active material, conductive additive, and binder, are homogenized in a solvent. These components contribute to the capacity and energy, electronic conductivity, and mechanical integrity of the electrode.

How can we reduce energy usage in electrode manufacturing?

A highly effective strategy for cutting down energy usage in electrode manufacturing is to do away with the use of the NMP solvent, transitioning instead to a dry electrode processing technique. The dry electrode process technology is increasingly recognized as a pivotal advancement for the next generation of batteries, particularly LIBs.

How does electrode manufacturing work?

Electrode manufacture involves several steps including the mixing of the different components, casting in a current collector and solvent evaporation . After the solvent evaporation step, a calendering process is used to reduce porosity and to improve particles cohesion, consequently improving battery performance .

What are the different dry electrode manufacturing techniques?

In addition, other dry electrode manufacturing techniques are being developed, such as AM Batteries (a spin-off from Worcester Polytechnic Institute), which uses the electrostatic spraying concept, further diversifies the dry electrode process techniques by referencing mature methods of different industries. 13b, 13c