一、活動時間：2024年12月12日 (四) 12:00~13:30
二、活動地點：工學大樓10樓-永續發展與能源科技研究中心會議室(如人數較多時將調整至其他會議室)
三、講題：Probing Materials Transformation During Reaction via X-ray Spectroscopy: Importance of Evaluating Intrinsic Activity of Oxygen Electrocatalysts
四、主講人：吳以璿 博士

瑞士蘇黎世聯邦理工學院 博士候選人

國立中央大學 材料科學與工程研究所 碩士

五、摘要：

Oxygen electrocatalysis sets a cornerstone for electrocatalytic energy conversion techniques such as fuel cells, electrolyzers and metal-air batteries. The oxygen evolution reaction (OER) is the limiting factor in cell efficiency for conventional water electrolyzer and a sustainable corresponding reaction for emerging CO₂ electrolysis. Despite enormous number of publications each year, evaluation of intrinsic activity of metal-oxide OER electrocatalysts is relatively rare. Most of reports aim to highlight the claimed “high activity” without deciphering bulk/surface transformation of materials under reaction conditions and understanding the real active sites of studied catalysts. In contrast to heterogeneous thermal catalysis, charge transfer at solid-electrolyte interface and stability of pristine or evolved crystal structure in aqueous environment determine the electrocatalysis itself. Here two showcases will be shared to emphasize the importance of the aforementioned factors: (1) ex-situ X-ray photoelectron spectroscopy and soft X-ray absorption spectroscopy at O K-edge for qualitative analyse the structure-related surface reconstruction in Ruddlesden-Popper lanthanum nickelates and (2) in-situ hard X-ray spectroscopy at Ir LIII-edge to quantify the interatomic structure of hydrous iridium oxide evolved from bimetallic Ir-based nanocrystals. The talk will finish with a brief view of the experience to properly perform lab-scale electrocatalytic studies using conventional three-electrode system and analyze data from-ray spectroscopies.

六、聯絡人：永續發展與能源科技研究中心 邱小姐 分機:3744
七、報名方式：網路報名，操作說明如下，活動與會者操作路徑：
A. 校務資訊系統→長庚大學活動報名系統。
B. 長庚大學APP→行動CGU→校園活動。
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八、報名日期截止：2024年12月11日(三)
九、主辦單位：永續發展與能源科技研究中心
十、注意事項：
1.為了對演講者表示尊重，及避免違反學術倫理行為，請衡酌時間，逾報到時間20分鐘恕不給予簽到；敬請全程參加並於會後簽退，未完成簽退者，本次專題演講將無法納入活動參與時數(此次活動研習時數1.5小時)。

2.承辦單位保有變更時間及演講者之權利。
3.演講當日務必帶 行動裝置 至現場掃描QR code簽到、退，請事先完成安裝長庚大學校園行動APP，謝謝!
( 活動報名系統各項功能，請詳看APP使用者之操作說明：https://mycgu.blogspot.com/2020/09/blog-post.html )