公开(公告)号：US09829458B2

公开(公告)日：2017-11-28

申请号：US14955776

申请日：2015-12-01

Applicant: Hitachi High-Technologies Corporation

Inventor： Hiroshi Kanemoto ,  Hauro Akahoshi ,  So Oguchi ,  Kenta Imai ,  Taku Sakazume ,  Hiroshi Yoshida

IPC: G01N27/30 ,  C25B11/08 ,  H01M4/92 ,  C25B11/04 ,  G01N27/327 ,  G01N33/49 ,  G01N27/403

CPC classification number: G01N27/307 ,  C25B11/0426 ,  C25B11/0431 ,  C25B11/0473 ,  C25B11/0484 ,  C25F3/16 ,  C25F7/00 ,  G01N27/30 ,  G01N27/3271 ,  G01N27/403 ,  G01N33/4915 ,  H01M4/92 ,  H01M4/921 ,  H01M4/923 ,  H01M4/925

Abstract: Provided are an electrode, an electrolysis cell, and an electrochemical analyzer that improve the long-term stability of analysis data. A working electrode, a counter electrode, and reference electrode are disposed in an electrolysis cell. The working electrode is obtained by forming a lead wire in a composite material having platinum or a platinum alloy as a base material, in which a metal oxide is dispersed, or in a laminated material obtained by laminating a valve metal and platinum such that the cross sectional crystal texture in the thickness direction of the platinum is formed in layers and the thickness of each layer of the platinum is 5 micrometers or less. The metal oxide is selected from among zirconium oxide, tantalum oxide, and niobium oxide, and the metal oxide content of the platinum or the platinum alloy is 0.005 to 1 wt % in terms of the zirconium, tantalum, or niobium metal.

公开(公告)号：US10018586B2

公开(公告)日：2018-07-10

申请号：US14760032

申请日：2014-01-14

Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION

Inventor： Shinya Matsuoka ,  So Oguchi ,  Yukie Tokiwa ,  Toshinari Sakurai ,  Yasushi Niiyama ,  Noriko Iizumi

IPC: G01N27/416

CPC classification number: G01N27/4163

Abstract: A flow cell for electrochemical measurement which introduces a sample solution, applies a voltage between a working electrode and a counter electrode to analyze the sample solution electrochemically, discharges the sample solution, and performs the electrochemical measurement continuously. The flow cell includes a unit which measures a value of a current flowing between electrodes at the time of applying a voltage, a unit which records the measured current value, a unit which compares the recorded current value with a current value set separately as a determination standard, and a unit which determines whether the current value measured at a cycle of a determination target and the recorded current value is normal by the comparison.