10.1038\/nenergy.2015.4<\/a><\/p>\nAuthors:<\/h4>\n
Feng Lin, Dennis Nordlund, Yuyi Li, Matthew K. Quan, Lei Cheng, Tsu\u2010Chien Weng, Yijin Liu, Huolin L. Xin, Marca M. Doeff<\/p>\n
Abstract:<\/h4>\n
In technologically important LiNi1-x-y<\/sub>Mnx<\/sub>Coy<\/sub>O2<\/sub> cathode materials, surface reconstruction from a layered to a rock-salt structure is commonly observed under a variety of operating conditions, particularly in Ni-rich compositions. This phenomenon contributes to poor high-voltage cycling performance, impeding attempts to improve the energy density by widening the potential window at which these electrodes operate. Here, using advanced nano-tomography and transmission electron microscopy techniques, we show that hierarchically structured LiNi0.4<\/sub>Mn0.4<\/sub>Co0.2<\/sub>O2<\/sub> spherical particles, made by a simple spray pyrolysis method, exhibit local elemental segregation such that surfaces are Ni-poor and Mn-rich. The tailored surfaces result in superior resistance to surface reconstruction compared with those of conventional LiNi0.4<\/sub>Mn0.4<\/sub>Co0.2<\/sub>O2<\/sub>, as shown by soft X-ray absorption spectroscopy experiments. In conclusion, the improved high-voltage cycling behaviour exhibited by cells containing these cathodes demonstrates the importance of controlling LiNi1-x-y<\/sub>Mnx<\/sub>Coy<\/sub>O2<\/sub> surface chemistry for successful development of high-energy lithium ion batteries.<\/p>\n","protected":false},"excerpt":{"rendered":"DOI: 10.1038\/nenergy.2015.4 Authors: Feng Lin, Dennis Nordlund, Yuyi Li, Matthew K. Quan, Lei Cheng, Tsu\u2010Chien Weng, Yijin Liu, Huolin L. Xin, Marca M. Doeff Abstract: In technologically important LiNi1-x-yMnxCoyO2 cathode materials, surface reconstruction from a layered to a rock-salt structure is commonly observed under a variety of operating conditions, particularly in Ni-rich compositions. This phenomenon […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29],"tags":[],"class_list":["post-1305","post","type-post","status-publish","format-standard","hentry","category-vmp-3-potentiostat"],"_links":{"self":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts\/1305","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=1305"}],"version-history":[{"count":0,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts\/1305\/revisions"}],"wp:attachment":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1305"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1305"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}