As previously discussed, the cathode is one end of the battery which is positively charged. The cathode can be made out of a few different compounds. All of the compounds have the lithium in them though. One of the most popular things to make the cathode out of is lithium manganese oxide (LiMn2O4). This compound is produced by combining manganese oxide (Mn2O3) with Lithium carbonate (Li2CO3). To get the Manganese oxide, it is roasted first in a controlled environment that has very low amounts of oxygen, then in one very high in oxygen