10.1021\/jp500382s<\/a><\/p>\nAuthors:<\/h4>\n
Yi\u2010Chun Lu, Qi He, Hubert A. Gasteiger<\/p>\n
Abstract:<\/h4>\n
Detailed mechanistic understanding of sulfur redox reactions is critical for developing efficient and stable lithium\u2013sulfur batteries. Here, we employ the rotating-ring disk electrode technique to probe the reaction kinetics and reaction mechanism of lithium\u2013sulfur redox reactions in dimethyl sulfoxide and 1,3-dioxolane:1,2-dimethoxyethane. We quantitatively determine the number of electrons involved in the reduction reactions and the specific activity of sulfur reduction reactions. We show that the electrochemical steps of sulfur reduction exhibit fast reaction kinetics and only account for approximately one-quarter of the total capacity (i.e., \u22484 e\u2013\/S8) within the short reaction time in RRDE experiments (seconds). The complete conversion of sulfur to Li2S can only be accomplished via chemical (i.e., potential-independent) polysulfide recombination\/dissociation reactions that generate electrochemically reducible polysulfides with long reaction time (hours) in a closed battery cell. The influence of the solvent\u2019s solvation power on the rate capability of the sulfur reduction\/oxidation processes and the implications for lithium\u2013sulfur batteries will be discussed.<\/p>\n","protected":false},"excerpt":{"rendered":"
DOI: 10.1021\/jp500382s Authors: Yi\u2010Chun Lu, Qi He, Hubert A. Gasteiger Abstract: Detailed mechanistic understanding of sulfur redox reactions is critical for developing efficient and stable lithium\u2013sulfur batteries. Here, we employ the rotating-ring disk electrode technique to probe the reaction kinetics and reaction mechanism of lithium\u2013sulfur redox reactions in dimethyl sulfoxide and 1,3-dioxolane:1,2-dimethoxyethane. We quantitatively determine […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[34],"class_list":["post-1142","post","type-post","status-publish","format-standard","hentry","category-blurev-rde-rrde","tag-battery"],"_links":{"self":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts\/1142","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1142"}],"version-history":[{"count":0,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts\/1142\/revisions"}],"wp:attachment":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1142"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1142"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1142"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}