What is Silicon powder material used for? As many lithium battery companies in the industry continue to search for process improvements, some companies have begun to replace graphite with silicon powder as the battery anode material. Silicon Anode Powders being selected as the anode material has been increasing in popularity after it was proven faster in recharge time for EV batteries. Sieving silicon for batteries is a process that must be done delicately in order to hit the target specification. Sieving silicon powder is not an easy process due to the fact that it is very lightweight and can be somewhat sticky in nature. The result is that if it is not sieved using the right technology, the machine will quickly blind. This will lead to inconsistent material and processing issues downstream.