10.1002\/advs.201903168<\/a><\/p>\nAuthors:<\/h4>\n
Yong Xie, Guoyu Pan, Qiang Jin, Xiaoqun Qi, Tan Wang, Wei Li, Hui Xu, Yuheng Zheng, Sa Li, Long Qie, Yunhui Huang, Ju Li<\/p>\n
Abstract:<\/h4>\n
Lean electrolyte (small E\/S ratio) is urgently needed to achieve high practical energy densities in Li-S batteries, but there is a distinction between the cathode’s absorbed electrolyte (AE) which is cathode-intrinsic and total added electrolyte (E) which depends on cell geometry. While total pore volume in sulfur cathodes affects AE\/S and performance, it is shown here that pore morphology, size, connectivity, and fill factor all matter. Compared to conventional thermally dried sulfur cathodes that usually render \u00ab\u00a0open lakes\u00a0\u00bb and closed pores, a freeze-dried and compressed (FDS-C) sulfur cathode is developed with a canal-capillary pore structure, which exhibits high mean performance and greatly reduces cell-to-cell variation, even at high sulfur loading (14.2 mg cm-2<\/sup>) and ultralean electrolyte condition (AE\/S = 1.2 \u00b5L mg-1<\/sup>). Interestingly, as AE\/S is swept from 2 to 1.2 \u00b5L mg-1<\/sup>, the electrode pores go from fully flooded to semi-flooded, and the coin cell still maintains function until (AE\/S)min<\/sub> \u2248 1.2 \u00b5L mg-1<\/sup> is reached. When scaled up to Ah-level pouch cells, the full-cell energy density can reach 481 Wh kg-1<\/sup> as its E\/S \u2248 AE\/S ratio can be reduced to 1.2 \u00b5L mg-1<\/sup>, proving high-performance pouch cells can actually be working in the ultralean, semi-flooded regime.<\/p>\n","protected":false},"excerpt":{"rendered":"DOI: 10.1002\/advs.201903168 Authors: Yong Xie, Guoyu Pan, Qiang Jin, Xiaoqun Qi, Tan Wang, Wei Li, Hui Xu, Yuheng Zheng, Sa Li, Long Qie, Yunhui Huang, Ju Li Abstract: Lean electrolyte (small E\/S ratio) is urgently needed to achieve high practical energy densities in Li-S batteries, but there is a distinction between the cathode’s absorbed electrolyte […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[34],"class_list":["post-342","post","type-post","status-publish","format-standard","hentry","category-its-e","tag-battery"],"_links":{"self":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts\/342","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=342"}],"version-history":[{"count":0,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts\/342\/revisions"}],"wp:attachment":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=342"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=342"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=342"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}