教師資料查詢 | 類別: 期刊論文 | 教師: 董崇禮 CHUNG-LI DONG (瀏覽個人網頁)

標題:Zirconium-regulation-induced bifunctionality in 3D cobalt-iron oxide nanosheets for overall water splitting
學年107
學期2
出版(發表)日期2019/05/30
作品名稱Zirconium-regulation-induced bifunctionality in 3D cobalt-iron oxide nanosheets for overall water splitting
作品名稱(其他語言)
著者L. Huang; D. Chen; G. Luo; Y. R. Lu; C. Chen; Y. Zou; C. L. Dong; Y. Li; S. Wang
單位
出版者
著錄名稱、卷期、頁數Advanced Materials 31(28), 1901439
摘要The design of high‐efficiency non‐noble bifunctional electrocatalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is paramount for water splitting technologies and associated renewable energy systems. Spinel‐structured oxides with rich redox properties can serve as alternative low‐cost OER electrocatalysts but with poor HER performance. Here, zirconium regulation in 3D CoFe2O4 (CoFeZr oxides) nanosheets on nickel foam, as a novel strategy inducing bifunctionality toward OER and HER for overall water splitting, is reported. It is found that the incorporation of Zr into CoFe2O4 can tune the nanosheet morphology and electronic structure around the Co and Fe sites for optimizing adsorption energies, thus effectively enhancing the intrinsic activity of active sites. The as‐synthesized 3D CoFeZr oxide nanosheet exhibits high OER activity with small overpotential, low Tafel slope, and good stability. Moreover, it shows unprecedented HER activity with a small overpotential of 104 mV at 10 mA cm−2 in alkaline media, which is better than ever reported counterparts. When employing the CoFeZr oxides nanosheets as both anode and cathode catalysts for overall water splitting, a current density of 10 mA cm−2 is achieved at the cell voltage of 1.63 V in 1.0 m KOH.
關鍵字bifunctional electrocatalysts;cationic regulation;electronic structure regulation;hydrogen evolution reaction;oxygen evolution reaction;spinel‐structured oxides
語言英文
ISSN1521-4095
期刊性質國外
收錄於SCI;
產學合作
通訊作者
審稿制度
國別德國
公開徵稿
出版型式,電子版
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