Apparatus for analyzing active material of secondary battery and method of analyzing active material using the same
US9970906B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2015 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Feb 1, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2697
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for analyzing an active material of a secondary battery may include: a first electrode; a piezoelectric layer on the first electrode; a second electrode on the piezoelectric layer, configured to provide a voltage having a polarity opposite to a polarity of the first electrode; and/or an insulating layer on the second electrode and including a through hole exposing a portion of the second electrode. A method of analyzing an active material of a secondary battery may include: disposing an active material in a through hole of a bulk acoustic resonator, in which a first electrode, a piezoelectric layer, a second electrode, and an insulating layer are stacked; measuring a resonance frequency of the resonator by applying an electric signal to the first and second electrodes of the resonator; and/or measuring a weight of the active material in the through hole, based on the measured resonance frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.