{
  "$type": "site.standard.document",
  "description": "Provided is a method of diagnosing the degradation of a lithium secondary battery in a non-destructive manner without disassembling the battery, which includes: (A) manufacturing a lithium secondary battery including a positive electrode including a layered positive electrode active material and a…",
  "path": "/patents/1409745",
  "publishedAt": "2023-04-19T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01N23/2055",
    "LG ENERGY SOLUTION LTD [KR]"
  ],
  "textContent": "Provided is a method of diagnosing the degradation of a lithium secondary battery in a non-destructive manner without disassembling the battery, which includes: (A) manufacturing a lithium secondary battery including a positive electrode including a layered positive electrode active material and a negative electrode; (B) obtaining, from X-ray diffraction (XRD) data obtained during first charging of the lithium secondary battery, a first graph showing the change of the c-axis d-spacing value of the layered positive electrode active material according to the number of moles of lithium ions deintercalated from the layered positive electrode active material during the charging; (C) obtaining, from XRD data obtained during second charging of the lithium secondary battery, a second graph showing the change of the c-axis d-spacing value of the layered positive electrode active material according to the number of moles of lithium ions deintercalated from the layered positive electrode active material during the charging; and (D) classifying a cause of degradation of the secondary battery by comparing the first graph and the second graph.",
  "title": "METHOD FOR DIAGNOSING CAUSE OF DEGRADATION OF LITHIUM SECONDARY BATTERY"
}