{"id":98145,"date":"2021-10-05T07:12:00","date_gmt":"2021-10-05T05:12:00","guid":{"rendered":"https:\/\/renewable-carbon.eu\/news\/?p=98145"},"modified":"2021-09-30T15:44:14","modified_gmt":"2021-09-30T13:44:14","slug":"researchers-reveal-multi-path-mechanism-in-electrochemical-co2-reduction","status":"publish","type":"post","link":"https:\/\/renewable-carbon.eu\/news\/researchers-reveal-multi-path-mechanism-in-electrochemical-co2-reduction\/","title":{"rendered":"Researchers reveal multi-path mechanism in electrochemical CO2 reduction"},"content":{"rendered":"\n\n\n

A research group led by Prof. XIAO Jianping from the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences (CAS) and their collaborators synthesized a single-atom Pb-alloyed Cu catalyst (Pb1<\/sub>Cu), which showed high activity for the electrochemical CO2<\/sub> reduction reaction (CO2<\/sub>RR) with a selectivity of 96% to formate and stability of up to 180 h at 100 mA cm-2<\/sup>.<\/strong><\/p>\n\n\n\n

The researchers reported multi-path for CO2<\/sub> reduction to formate, namely the reaction paths through COOH* and HCOO* intermediates. The reaction phase diagram was built based on the “energy global optimization” approach, describing the activity trend for CO2<\/sub>RR to formate. A double-peak activity trend was obtained owing to the consideration of multi-path.<\/p>\n\n\n\n

They found that Cu preferred the COOH* path, resulting in the production of hydrocarbons and oxygenates, which exhibit limited selectivity and activity toward a specific product. However, Pb1<\/sub>Cu preferred the HCOO* path. The optimal HCOO* binding energy in Pb1<\/sub>Cu revealed either high activity or selectivity to formate via CO2<\/sub>RR. The agreement between experimental and theoretical activity trend confirms the reliability of multi-path mechanism.<\/p>\n\n\n\n

The Cu site on the Pb1<\/sub>Cu step surface, rather than the single-atom Pb site, showed the highest CO2<\/sub>RR activity toward exclusive formate production. The free-energy diagram with the calculated electrochemical barriers also confirms the formate selectivity.<\/p>\n\n\n\n

“The ‘double-peak’ describes a more accurate activity trend for CO2<\/sub>RR, providing a significant insight for catalyst design,” said Prof. XIAO.<\/p>\n\n\n\n

Original publication<\/h3>\n\n\n\n

Zheng, T., Liu, C., Guo, C. et al.; “Copper-catalysed exclusive CO2 to pure formic acid conversion via single-atom alloying”; Nat. Nanotechnol.; 2021<\/a><\/p>\n\n\n\n

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

A research group led by Prof. XIAO Jianping from the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences (CAS) and their collaborators synthesized a single-atom Pb-alloyed Cu catalyst (Pb1Cu), which showed high activity for the electrochemical CO2 reduction reaction (CO2RR) with a selectivity of 96% to formate and stability of up to 180 h […]<\/p>\n","protected":false},"author":105,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","nova_meta_subtitle":"A double-peak activity trend was obtained on a reaction phase diagram","footnotes":""},"categories":[5571],"tags":[19120,19121],"supplier":[7471,23094],"class_list":["post-98145","post","type-post","status-publish","format-standard","hentry","category-co2-based","tag-co2reduction","tag-electrochemical","supplier-chinese-academy-sciences","supplier-dalian-institute-of-chemical-physics-dicp"],"_links":{"self":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/98145","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/users\/105"}],"replies":[{"embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/comments?post=98145"}],"version-history":[{"count":0,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/98145\/revisions"}],"wp:attachment":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/media?parent=98145"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/categories?post=98145"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/tags?post=98145"},{"taxonomy":"supplier","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/supplier?post=98145"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}