Hello, I am starting research about lithium-selenium battery.

In many researches, they used encapsulated selenium to porous carbon.

Like as this method

1. ball milling with porous carbon and selenium powder.

2. Heat treatment

To exercise above method, i tried that and then I found the disappeared selenium in ball milling.

Selenium is very light. When I opened the vessel of ball milling, some black gas? powder? fly out unlike sulfur-porous carbon composite, . Maybe, I expected that is selenium.

So, I want to know how can I mix them without loss of selenium in ball milling.

Thanks.