After the official announcement by Samsung, for which they later publicly apologized and uncover the reason behind the explosions of batteries. The Korean investigation team came forward with the results as well which has the same result as Samsung.

big acer xr382cqk left angle 4.jpg 4 Korean Government finally finds out the reason behind the Galaxy Note 7 Fiasco
Image Source: cdn.phonearena

Except Galaxy Note 7 Debacle lithium-ion (Li-ion) batteries Are Safe to Use