文献类型：期刊文献

英文题名：Carbon-anchoring synthesis of Pt1Ni1@Pt/C core-shell catalysts for stable oxygen reduction reaction

作者：Cui, Jialin[1];Zhang, Di[2];Liu, Zhongliang[1];Li, Congcong[1];Zhang, Tingting[1];Yin, Shixin[1];Song, Yiting[1];Li, Hao[2];Li, Huihui[1];Li, Chunzhong[1,3]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai, Peoples R China;[2]Tohoku Univ, Adv Inst Mat Res WPI AIMR, Sendai, Japan;[3]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn, Shanghai, Peoples R China

年份：2024

卷号：15

期号：1

外文期刊名：NATURE COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001346598500001)】；

基金：This work was supported by the National Natural Science Foundation of China (U22B20143, 21838003, and 21771170), the Shanghai Municipal Science and Technology Major Project, the Shanghai Scientific and Technological Innovation Project (22dz1205900), the Shanghai Rising-Star Program (20QA1402700), JSPS KAKENHI (no. JP23K13703), and the Hirose Foundation. The authors thank the Shanghai Synchrotron Radiation Facility (14W1, SSRF) and the Center for Computational Materials Science, Institute for Materials Research, Tohoku University for the use of MASAMUNE-IMR (project nos. 202312-SCKXX-0203 and 202312-SCKXX-0207) and the Institute for Solid State Physics (ISSP) at the University of Tokyo for the use of their supercomputers. D.Z. acknowledges the National Natural Science Foundation of China (no. 22309109) and KAKENHI Start-Up (no. JP24K23068). D.Z. gratefully acknowledges the support provided by the Shanghai Jiao Tong University Outstanding Doctoral Student Development Fund.

语种：英文

摘要：Proton-exchange-membrane fuel cells demand highly efficient catalysts for the oxygen reduction reaction, and core-shell structures are known for maximizing precious metal utilization. Here, we reported a controllable "carbon defect anchoring" strategy to prepare Pt1Ni1@Pt/C core-shell nanoparticles with an average size of similar to 2.6 nm on an in-situ transformed defective carbon support. The strong Pt-C interaction effectively inhibits nanoparticle migration or aggregation, even after undergoing stability tests over 70,000 potential cycles, resulting in only 1.6% degradation. The stable Pt1Ni1@Pt/C catalysts have high oxygen reduction reaction mass activity and specific activity that reach 1.424 +/- 0.019 A/mg(Pt) and 1.554 +/- 0.027 mA/cm(Pt)(2) at 0.9 V, respectively, attributed to the optimal compressive strain. The experimental results are generally consistent with the theoretical predictions made by our comprehensive microkinetic model which incorporates essential kinetics and thermodynamics of oxygen reduction reaction. The consistent results obtained in our study provide compelling evidence for the high accuracy and reliability of our model. This work highlights the synergy between theory-guided catalyst design and appropriate synthetic methodologies to translate the theory into practice, offering valuable insights for future catalyst development.