{"id":642,"date":"2025-09-05T15:54:02","date_gmt":"2025-09-05T13:54:02","guid":{"rendered":"https:\/\/sites.unica.it\/superfici\/?page_id=642"},"modified":"2025-09-05T18:36:30","modified_gmt":"2025-09-05T16:36:30","slug":"study-of-hydrogen-diffusion-by-electrochemical-measurements","status":"publish","type":"page","link":"https:\/\/sites.unica.it\/superfici\/study-of-hydrogen-diffusion-by-electrochemical-measurements\/","title":{"rendered":"Study of hydrogen diffusion by electrochemical measurements\u00a0"},"content":{"rendered":"\n

Green hydrogen storage and transportation requires steel containers and pipelines that have efficient coatings to prevent hydrogen uptake into steel. This hydrogen permeation barriers (HPB) play a crucial role in preventing the medium to high-strength steel used for storage and transportation infrastructure from hydrogen embrittlement (HE). In the framework of the e.INS WP 7 project “Study of hydrogen permeation barriers for the safe storage and transport of green hydrogen<\/a><\/strong>” a procedure (see figure) to determine hydrogen permeation according to Devanathan Starchurski with the electrochemical double cell has been established by the group of Surface Analysis, Electrochemistry and Corrosion.<\/p>\n\n\n\n

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Procedure to determine hydrogen permeation according to Devanathan Starchurski as installed in the laboratory for Surface Analysis, Electrochemistry and Corrosion <\/figcaption><\/figure>\n\n\n\n

The procedure follows a defined timing both for the hydrogen production and hydrogen detection cell. In the detection cell (figure right) the sample is first exposed to 0.1 N NaOH solution for 1 h at the open circuit potential, then passivated at a potential of OCP + 0.3 V. After one hour of passivation the hydrogen production (figure right) is started at a current of -1 mA\/cm2<\/sup>. The hydrogen atoms that absorb and diffuse through the sample are detected by an anodic current in the detection cell. <\/p>\n\n\n\n

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Results of three replica hydrogen permeation experiments of X60 steel. Left: hydrogen production cell, right: hydrogen detection current<\/figcaption><\/figure>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Green hydrogen storage and transportation requires steel containers and pipelines that have efficient coatings to prevent hydrogen uptake into steel. This hydrogen permeation barriers (HPB) play a crucial role in preventing the medium to high-strength steel […]<\/p>\n","protected":false},"author":335,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-642","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.unica.it\/superfici\/wp-json\/wp\/v2\/pages\/642","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.unica.it\/superfici\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.unica.it\/superfici\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.unica.it\/superfici\/wp-json\/wp\/v2\/users\/335"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.unica.it\/superfici\/wp-json\/wp\/v2\/comments?post=642"}],"version-history":[{"count":4,"href":"https:\/\/sites.unica.it\/superfici\/wp-json\/wp\/v2\/pages\/642\/revisions"}],"predecessor-version":[{"id":681,"href":"https:\/\/sites.unica.it\/superfici\/wp-json\/wp\/v2\/pages\/642\/revisions\/681"}],"wp:attachment":[{"href":"https:\/\/sites.unica.it\/superfici\/wp-json\/wp\/v2\/media?parent=642"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}