Negative electrode for lithium ion battery and lithium ion battery using the same

A negative electrode for a battery, comprising

• a current collector;
• an inner coating on the current collector;
• and
• an outer coating on the inner coating;
• wherein the inner and outer coatings comprise a carbonaceous material, and a lithium titanium oxide compound;
• wherein the weight percentage of the carbonaceous material is higher than that of the lithium titanium oxide compound in the inner coating;
• wherein the weight percentage of the carbonaceous material is lower than that of the lithium titanium oxide compound in the outer coating;
• wherein the total weight percentage of the carbonaceous material in the combined inner and outer coatings is higher than the total weight percentage of the lithium titanium oxide compound in the combined inner and outer coatings;
• and
• wherein each of the inner and outer coatings comprises one layer.

A lithium ion battery, comprising:

• a negative electrode, comprising
• a current collector;
• an inner coating on the current collector;
• and
• an outer coating on the inner coating;
• wherein the inner and outer coatings comprise a carbonaceous material, and a lithium titanium oxide compound;
• wherein the weight percentage of the carbonaceous material is higher than that of the lithium titanium oxide compound in the inner coating;
• wherein the weight percentage of the carbonaceous material is lower than that of the lithium titanium oxide compound in the outer coating;
• and
• wherein the total weight percentage of the carbonaceous material in the combined inner and outer coatings is higher than the total weight percentage of the lithium titanium oxide compound in the combined inner and outer coatings;
• a positive electrode, comprising
• a current collector;
• and
• a coating on the current collector;
• a separator;
• an electrolyte;
• and
• a case;
• wherein the negative electrode, the positive electrode, the separator, and the electrolyte are disposed in the case.