Can powder spray be used for energy storage devices?

Powder spray technology has grown to be very mature, but has not been reported many times for large-scale production of energy storage devices. Powder spray production can be used in a roll-to-roll manner, with surface energy density and electrode size exceeding the requirements of power batteries and portable electronic devices.

How does the powder spray method work?

As shown in the schematic diagram (Fig. 3 c), the powder spray method applies powder to the current collector through a powder application device, and then fix the powder on the current collector through hot rolling.

What is powder spray used for?

Powder spray is mainly used in the preparation of LIB electrodes, followed by SCs electrode and ASSBs preparation. In 2004, Chaturvedi et al. released a patent for applying powder spray technology to the preparation of SC electrodes.

Are powder spray and binder fibrillation suitable for mass production of batteries?

Based on the obtained insights, powder spray and binder fibrillation processes are found to be suitable for mass production of batteries, especially all solid-state batteries (ASSBs). Since its commercialization in the 1990s, lithium-ion batteries (LIBs) have greatly changed our lives in various fields.

What is powder Electrostatic spraying?

Powder electrostatic spraying solved the problems of uneven and thick coating of the fluidized bed coating method caused by the electric field. With technological development, powder spray was gradually applied in the energy-storage field.

How can a large-scale mass-production of batteries be achieved?

This method can effectively increase the strength and energy density of the battery. As mentioned above, powder spray and binder fibrillation are the most two promising technologies that can realize large-scale mass-production of batteries, because they are suitable for roll-to-roll production.