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您的检索式：作者名="Daehee Yang"
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| 1 | Facile synthesis of fully ordered L10-FePt nanoparticles with controlled Pt-shell thicknesses for electrocatalysis显示文摘我们为 ~ 的合成报导一条简单一步舞途径 4 nm 制服并且充分 L1 0-ordered 以脸为中心四角形(fct ) FePt nanoparticles (NP ) 在 ~ 嵌入 60 nm MCM-41 (fct-FePt NPs@MCM-41 ) 。我们由与醋酸(HOAc ) 对待 fct-FePt NPs@MCM-41 控制了 fct-FePt NP 的磅壳厚度或盐酸在 sonication 下面的酸(HCl ) ,从而蚀刻 NP 的表面 Fe 原子。扔到碳支持(fct-FePt NP/C ) 上的 fct-FePt NP 被与碳混合 fct-FePt NPs@MCM-41 并且随后用 NaOH 移开 MCM-41 准备。我们也开发了一个灵巧的方法综合由使用一个 HF 答案同时的 surface-Fe 蚀刻和 MCM-41 移动的酸处理的 fct-FePt NP/C。我们学习了 surface-Fe 为甲醇氧化反应(粗腐殖质) 在 fct-FePt NP 的 electrocatalytic 性质上蚀刻和磅壳厚度的效果。与非对待的 fct-FePt NP/C 催化剂相比,对待 HOAc 、对待 HCl 的催化剂展出多达 34% 更大的电气化学地活跃的表面区域(ECASA ) ;另外,对待 HCl 的 fct-FePt NP (与 ~ 1.0 nm 磅壳)/C 催化剂展览最高特定的活动。对待 HF 的 fct-FePt NP/C 展出 ECASA 比那些大几乎 2 倍另外的酸处理的 fct-FePt NP/C 催化剂和表演最高集体的活动(1,435 妈吗?? | Yonghoon Hong Hee Jin Kim Daehee Yang Gaehang Lee Ki Min Nam Myung-Hwa Jung Young-Min Kim Sang-II Choi Won Seok Seo | 2017 | Nano Research2017，10，8： | 2 |
| 2 | Segmented tomographic evaluation of structural degradation of carbon support in proton exchange membrane fuel cells显示文摘The variation of the three-dimensional(3D)structure of the membrane electrode of a fuel cell during proton exchange cycling involves the corrosion/compaction of the carbon support.The increasing degradation of the carbon structure continuously reduces the electrocatalytic performance of proton exchange membrane fuel cells(PEM-FCs).This phenomenon can be explained by performing 3D tomographic analysis at the nanoscale.However,conventional tomographic approaches which present limited experimental feasibility,cannot perform such evaluation and have not provided sufficient structural information with statistical significance thus far.Therefore,a reliable methodology is required for the 3D geometrical evaluation of the carbon structure.Here,we propose a segmented tomographic approach which employs pore network analysis that enables the visualization of the geometrical parameters corresponding to the porous carbon structure at a high resolution.This approach can be utilized to evaluate the 3D structural degradation of the porous carbon structure after cycling in terms of local surface area,pore size distribution,and their 3D networking.These geometrical parameters of the carbon body were demonstrated to be substantially reduced owing to the cycling-induced degradation.This information enables a deeper understanding of the degradation phenomenon of carbon supports and can contribute to the development of stable PEM-FC electrodes. | Jung A.Hong Min-Hyoung Jung Sung Yong Cho Eun-Byeol Park Daehee Yang Young-Hoon Kim Sang-Hyeok Yang Woo-Sung Jang Jae Hyuck Jang Hyo June Lee Sungchul Lee Hu Young Jeong Young-Min Kim | 2022 | Journal of Energy Chemistry2022，31，11： | 0 |
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