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var __INLINE_SCRIPT__=function(){"use strict";var e=function(e,a,t){function i(e,a){var t=e.match(new RegExp(a+"\\s*=\\s*[\"']?([^\"'\\s>]+)[\"']?"));return t&&t[1]}if(e=a?window.__emojiFormat(function(e){var a;e=e.split(/(]*>)(.*?)()/);for(var t=0;ts.offsetHeight+1?e.style.display="block":e.style.display="none"}),300)}};if(!window.__second_open__){var a=window.a_value_which_never_exists||"在之前的視頻中,導師們分享了一份好的經費申請書會包含的五大要素:受眾、關鍵信息、證據、角色、結構。其中關鍵信息是對整個敘事內容的一兩句話總結,通過簡潔明了地陳述你想達成的目標,並不時地呼應這一信息,可以幫助讀者更加容易地記住你的研究重點。在這個視頻中,導師們將就關鍵信息的作用以及如何將關鍵信息與資助者的目標對等起來分享他們的觀點和看法。歡迎訪問官網,免費體驗更多試聽課程。\x0a\x0a相關閱讀:\x26nbsp;\x0a\x3ca target=\x22_blank\x22 data-itemshowtype=\x220\x22 href=\x22http://mp.weixin.qq.com/s?__biz=MzAwNTAyMDY0MQ==\x26amp;mid=2652658653\x26amp;idx=2\x26amp;sn=61a6c206901ab01dd8a9c14ca8a86144\x26amp;chksm=80cbf553b7bc7c45457092b5c950514dff34dbfc2df290b5f6a231e11ce0a0ed4f526f90c2e6\x26amp;scene=142#wechat_redirect\x22\x3e你離一篇優秀的經費申請書,可能還差這個技巧\x3c/a\x3e\x0a\x3ca target=\x22_blank\x22 href=\x22https://mp.weixin.qq.com/s?__biz=MzAwNTAyMDY0MQ==\x26amp;mid=2652630919\x26amp;idx=2\x26amp;sn=7566ba157f66183d35d7c129a0160aac\x26amp;chksm=80cc4109b7bbc81fce807506b5cdcf1663045767795c8f0a6b7a8552a33865f40efa9cdfdb1d\x26amp;scene=142#wechat_redirect\x22\x3e課程上新!經費申請書怎麼撰寫?Nature請9位專家為你支招\x3c/a\x3e";a?e(a,!0,"5"):e("在之前的視頻中,導師們分享了一份好的經費申請書會包含的五大要素:受眾、關鍵信息、證據、角色、結構。其中關鍵信息是對整個敘事內容的一兩句話總結,通過簡潔明了地陳述你想達成的目標,並不時地呼應這一信息,可以幫助讀者更加容易地記住你的研究重點。在這個視頻中,導師們將就關鍵信息的作用以及如何將關鍵信息與資助者的目標對等起來分享他們的觀點和看法。歡迎訪問官網,免費體驗更多試聽課程。\x0a\x0a相關閱讀:\x26amp;nbsp;\x0a\x26lt;a target=\x26quot;_blank\x26quot; data-itemshowtype=\x26quot;0\x26quot; href=\x26quot;http://mp.weixin.qq.com/s?__biz=MzAwNTAyMDY0MQ==\x26amp;amp;mid=2652658653\x26amp;amp;idx=2\x26amp;amp;sn=61a6c206901ab01dd8a9c14ca8a86144\x26amp;amp;chksm=80cbf553b7bc7c45457092b5c950514dff34dbfc2df290b5f6a231e11ce0a0ed4f526f90c2e6\x26amp;amp;scene=142#wechat_redirect\x26quot;\x26gt;你離一篇優秀的經費申請書,可能還差這個技巧\x26lt;/a\x26gt;\x0a\x26lt;a target=\x26quot;_blank\x26quot; href=\x26quot;https://mp.weixin.qq.com/s?__biz=MzAwNTAyMDY0MQ==\x26amp;amp;mid=2652630919\x26amp;amp;idx=2\x26amp;amp;sn=7566ba157f66183d35d7c129a0160aac\x26amp;amp;chksm=80cc4109b7bbc81fce807506b5cdcf1663045767795c8f0a6b7a8552a33865f40efa9cdfdb1d\x26amp;amp;scene=142#wechat_redirect\x26quot;\x26gt;課程上新!經費申請書怎麼撰寫?Nature請9位專家為你支招\x26lt;/a\x26gt;",!1,"5"),window.__setDesc=e}return e}();

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本文是《自然-化學》元素故事系列的第83篇文章:鐒(láo)在元素周期表上的位置

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關注+星標🌟,好搭檔不錯過


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Covalent organic framework–based porous ionomers for high-performance fuel cells
QINGNUAN ZHANG, SHUDA DONG, PENGPENG SHAO , YUHAO ZHU, ZHENJIE MU, DAFEI SHENG, TENG ZHANG, XIN JIANG, RUIWEN SHAO, ZHIXIN REN,JING XIE,XIAO FENG AND BO WANG
SCIENCE,13 Oct 2022 Vol 378, Issue 6616 pp. 181-186
DOI: 10.1126/science.abm6304
Lowering platinum (Pt) loadings without sacrificing power density and durability in fuel cells is highly desired yet challenging because of the high mass transport resistance near the catalyst surfaces. We tailored the three-phase microenvironment by optimizing the ionomer by incorporating ionic covalent organic framework (COF) nanosheets into Nafion. The mesoporous apertures of 2.8 to 4.1 nanometers and appendant sulfonate groups enabled the proton transfer and promoted oxygen permeation. The mass activity of Pt and the peak power density of the fuel cell with Pt/Vulcan (0.07 mg of Pt per square centimeter in the cathode) both reached 1.6 times those values without the COF. This strategy was applied to catalyst layers with various Pt loadings and different commercial catalysts.
https://www.science.org/doi/10.1126/science.abm6304

Crystallographic Mapping and Tuning of Water Adsorption in Metal–Organic Frameworks Featuring Distinct Open Metal SitesJournal of the American Chemical Society,Pub Date:2022-10-13, DOI:10.1021/jacs.2c08717Yi Han, Prasenjit Das, Yiwen He, Dan C. Sorescu, Kenneth D. Jordan, Nathaniel L. Rosi
Crucial steps toward designing water sorption materials and fine-tuning their properties for specific applications include precise identification of adsorption sites and establishment of rigorous molecular-level insight into the water adsorption process. We report stepwise crystallographic mapping and density functional theory computations of adsorbed water molecules in ALP-MOF-1, a metal–organic framework decorated with distinct open metal sites and carbonyl functional groups that serve as water anchoring sites for seeding the nucleation of a complex water network. Identification of an unusual water adsorption step in ALP-MOF-1 motivated the tuning of metal ion composition to adjust water uptake. These studies provide direct evidence that the identity of the open metal sites in MOFs can dramatically affect water adsorption behavior between 0 and ∼20% RH and that multiple proximal water anchoring sites along the MOF skeleton facilitate water uptake which could be potentially useful for applications requiring rapid and energetically facile water sorption.
https://pubs.acs.org/doi/abs/10.1021/jacs.2c08717

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各位KYer大家好鴨~

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去年年底,一個話題火爆全網,「被疫情偷走的這兩年......」。可能疫情偷走的不僅僅是兩年的時光,還有實實在在的職業機會,以及我們內心對於未來的安全感。

未來因為未知,是讓我們心生恐懼。隨着年齡增長,我們在外部職場和內部生活中都面臨着呈幾何級數增長的複雜和困難,而有時候我們感到無奈和絕望,是因為我們發現自己的體力和精力正在衰減,無法與日趨複雜的人生抗衡。35歲職場歧視的傳聞也讓我們窺探到冷酷的現實不會體恤我們日益艱難的人生處境。
所以,你是否思考過,有一份職業值得你投入終身,並且現在開始「一切剛剛好」。

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