Capacitor component
A capacitor component includes a body including a dielectric layer and an internal electrode, the internal electrode including nickel and an alloying element, and an external electrode disposed on the body to be connected to the internal electrode. The internal electrode includes an alloy region and an alloying element region.
1. A capacitor component comprising:
a body including a dielectric layer and an internal electrode disposed on the dielectric layer in a stacking direction, the internal electrode including nickel and an alloying element; and
an external electrode disposed on the body to be connected to the internal electrode,
wherein the internal electrode includes an alloy region and an alloying element region,
wherein the alloying element region is disposed in a disconnected portion of the internal electrode and extends from the internal electrode in a direction perpendicular to the stacking direction,
wherein the alloy region includes an alloy of the nickel and the alloying element, and
wherein the alloying element region is a region in which the alloying element is used as a main ingredient.
2. The capacitor component of claim 1 , wherein the alloying element is a period 3 element, a period 4 element, or one or more of group 4 to 11 elements on the periodic table of elements.
3. The capacitor component of claim 1 , wherein the alloying element includes at least one of silicon (Si), aluminum (Al), magnesium (Mg), iron (Fe), phosphorus (P), tin (Sn), zinc (Zn), dysprosium (Dy), copper (Cu), or alloys thereof.
4. The capacitor component of claim 1 , wherein the alloying element includes two or more of silicon (Si), aluminum (Al), magnesium (Mg), iron (Fe), phosphorus (P), tin (Sn), zinc (Zn), dysprosium (Dy), copper (Cu), or alloys thereof.
5. The capacitor component of claim 1 , wherein the alloying element region satisfies an area fraction of more than 5% and less than 60% relative to the disconnected portion of the internal electrode.
6. The capacitor component of claim 1 , wherein a weight of the alloying element is in a range of 0.01 wt % to 15 wt %, relative to a total weight of a conductive paste forming the internal electrode.
7. The capacitor component of claim 1 , wherein the internal electrode includes a sintered element of nickel having a surface on which the alloying element is coated.
8. The capacitor component of claim 1 , wherein the internal electrode has an average thickness of 0.41 μm or less.
9. The capacitor component of claim 1 , wherein the dielectric layer has an average thickness of 0.4 μm or less.
10. The capacitor component of claim 1 , wherein connectivity of the internal electrode, defined as a ratio of an actual length of the internal electrode to an entire length of the internal electrode, is 70% or more.