{"id":23197,"date":"2022-07-18T14:28:24","date_gmt":"2022-07-18T13:28:24","guid":{"rendered":"https:\/\/www.innovationnewsnetwork.com\/?p=23197"},"modified":"2022-07-18T14:28:24","modified_gmt":"2022-07-18T13:28:24","slug":"differential-electrochemical-mass-spectrometry-real-time-analysis-electrochemical-processes","status":"publish","type":"post","link":"https:\/\/www.innovationnewsnetwork.com\/differential-electrochemical-mass-spectrometry-real-time-analysis-electrochemical-processes\/23197\/","title":{"rendered":"Differential electrochemical mass spectrometry: real-time analysis of electrochemical processes"},"content":{"rendered":"

Dr Dane Walker from Hiden Analytical<\/a> discusses how differential electrochemical mass spectrometry offers real-time analysis of electrochemical processes.<\/h2>\n

Electrochemistry is a field of research focussed on chemical change and the relating flow of electrons. British scientist Michael Faraday pioneered and carried out fundamental work in generating electricity from chemical change, creating chemical change using electricity, electrolysis and storing this electrical change in batteries.<\/p>\n

Electrochemistry is fundamental in many areas of modern life, with important applications such as batteries, fuel cells, electroplating, electrowinning and hydrogen production.<\/p>\n

Until recently, analysis of electrochemical processes was limited to electrical impedance spectroscopy (EIS), linear polarisation resistance (LPR) and remote, post process chemical measurements. Traditional measurements, albeit useful, are limited in their species specificity and measurement speed.<\/p>\n

To gain real-time measurements of both dissolved and evolved gases from an electrochemical process, differential electrochemical mass spectrometry (DEMS) was developed. The DEMs technique provides quantifiable insights into cell chemistry by integrating a mass spectrometer system with a customised nanoporous electrode. This allows dissolved species from the electrochemical reaction to be analysed in real time, and these can be correlated to electrode potential and other external parameters such as time. Data gained can be directly correlated to the electrodes\u2019 faradaic current, enabling the determination of key parameters hydrogen evolution and carbon dioxide (CO2<\/sub>) production.<\/p>\n

DEMS allows for in-situ mass resolved determination of reaction intermediates, gaseous or volatile electrochemical reactants, and products in real-time. A typical DEMS system comprises an electrochemical half-cell, membrane interface, and a vacuum system that includes a quadrupole mass spectrometer.<\/p>\n

DEMS systems are used in many research areas, including:<\/p>\n