Hydrogen ion electrode composed of composite material of nano iridium oxide and polymer resin and enabling surface regeneration, pH sensor using same, and method for manufacturing same
US9810655B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2014 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | Nov 13, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4167
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided are a hydrogen ion electrode composed of a composite material of polymer resin and nano iridium oxide, the composite material containing 1-10 nm sized nano iridium oxide particles and/or aggregates thereof which are dispersed to be electrically connected to each other in a moldable, thermoplastic, and hydrophobic polymer resin matrix; a pH sensor using the same; and a method for manufacturing the same. The surface of the hydrogen ion electrode shows very fast pH sensitivity when exposed to a sample solution, and the pH sensitivity is approximate to biphasic characteristics. Furthermore, regardless of high reproducibility of pH sensitivity, abrupt pH change, and repetitive use, very low hysteresis, durability due to high physical strength, and high surface regeneration due to polishing are exhibited, and thus, the lifetime of the electrode can be extended and various sizes and shapes of electrodes can be easily manufactured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.