Could it lead to a new storage method? Helium lasts for microseconds, perhaps other atoms can store it indefinitely. Could that enable bulk antimatter storage?

Could it lead to a new storage method? Helium lasts for microseconds, perhaps other atoms can store it indefinitely. Could that enable bulk antimatter storage? E.g. 1 mol of mercury that contains 1 mole of anti-protons and doesn't annihilate unless subjected to some extreme condition.