NEGATIVE ELECTRODE AND BATTERY USING SAME
Disclosed is a negative electrode including a negative electrode charge collector, and a negative electrode layer that is disposed on the negative electrode charge collector and contains solid electrolyte particles. The value of (D 90 −D 10 )/D 50 is less than 10.0, where D 10 , D 50 , and D 90 are defined as cumulative volume particle diameters of the solid electrolyte particles at cumulative volumes of 10 vol %, 50 vol %, and 90 vol % respectively, as measured according to a laser diffraction/scattering particle size distribution measurement method. The negative electrode contains no negative electrode active material. Preferably, a cumulative volume particle diameter D 95 of the solid electrolyte particles at a cumulative volume of 95 vol % as measured according to the laser diffraction/scattering particle size distribution measurement method is less than 65 μm.
1 . A negative electrode comprising:
a negative electrode charge collector; and
a negative electrode layer that is disposed on the negative electrode charge collector and contains solid electrolyte particles, wherein
a value of (D 90 −D 10 )/D 50 is less than 10.0, where D 10 , D 50 , and D 90 are defined as cumulative volume particle diameters of the solid electrolyte particles at cumulative volumes of 10 vol %, 50 vol %, and 90 vol % respectively, as measured according to a laser diffraction/scattering particle size distribution measurement method, and
the negative electrode contains no negative electrode active material.
2 . The negative electrode according to claim 1 , wherein a cumulative volume particle diameter D 95 of the solid electrolyte particles at a cumulative volume of 95 vol % as measured according to the laser diffraction/scattering particle size distribution measurement method is less than 65 μm.
3 . The negative electrode according to claim 1 or 2 claim 1 , further comprising an electroconductive material.
4 . The negative electrode according to claim 1 or 2 claim 1 , wherein the solid electrolyte particles contain a lithium (Li) element, a sulfur(S) element, and an M element, wherein
M comprises at least one selected from phosphorus (P), germanium (Ge), antimony (Sb), silicon (Si), tin (Sn), aluminum (AI), titanium (Ti), iron (Fe), nickel (Ni), cobalt (Co), and manganese (Mn).
5 . The negative electrode according to claim 4 , wherein the solid electrolyte particles include a crystal phase having an argyrodite-type crystal structure.
6 . The negative electrode according to claim 3 , wherein the electroconductive material is a carbon material or a metal material.
7 . The negative electrode according to claim 1 , wherein lithium metal is depositable during charging.
8 . A battery comprising:
a negative electrode;
a positive electrode; and
a solid electrolyte layer disposed between the negative electrode and the positive electrode, wherein
the negative electrode comprises a negative electrode charge collector, and
a negative electrode layer that is disposed on the negative electrode charge collector, contains solid electrolyte particles, and contains no negative electrode active material, and
a value of (D 90 −D 10 )/D 50 is less than 10.0, where D 10 , D 50 , and D 90 are defined as cumulative volume particle diameters of the solid electrolyte particles at cumulative volumes of 10 vol %, 50 vol %, and 90 vol % respectively, as measured according to a laser diffraction/scattering particle size distribution measurement method.