富勒烯/金属卟啉自组装衍生HER与ORR双功能电催化剂的合成及性能研究
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陕西科技大学

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TQ153

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国家自然科学基金(52072226);大学生创新创业训练计划(202310708002);陕西省重点研发计划(2024GX-YBXM-466);西安市科技计划 (22GXFW0013);西安市未央区科技计划 (202315)


Synthesis and Properties of HER and ORR Bifunctional Electrocatalysts Derived from Fullerene/Metalporphyrin Self-Assembly
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Shaanxi University of Science and Technology

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    摘要:

    对富勒烯(C60)和双金属卟啉化合物(TPP)进行自组装结合梯度退火工艺,成功制备了氮掺杂石墨碳上负载FeNi合金纳米颗粒复合电催化剂(C60/FeNiTPP-700-900)。通过XRD、SEM、TEM、XPS及电化学方法对所得材料进行了结构表征和析氢(HER)及氧还原(ORR)性能测试。结果表明,在1.0 M KOH中,电流密度达到10 mA cm-2,C60/FeNiTPP-700-900的析氢过电位为164 mV,并且其催化稳定性能够保持至少20 h。在ORR过程中,半波电位达到0.824 V(相对于可逆氢电极电势),且具有良好的稳定性和甲醇耐受性。本工作为设计和制备高效廉价的双功能电催化剂提供了新的思路。

    Abstract:

    Nitrogen-doped graphite-carbon supported FeNi alloy nanoparticle composite electrocatalyst (C60/FeNiTPP-700-900) was successfully prepared by self-assembly and gradient annealing of fullerene (C60) and bimetallic porphyrin compound (TPP). The obtained materials were characterized by XRD, SEM, TEM, XPS and electrochemical methods, and the properties of hydrogen evolution (HER) and oxygen reduction (ORR) were tested. The results showed that the hydrogen evolution overpotential of C60/FeNiTPP-700-900 was 164 mV at a current density of 10 mA cm-2 in 1.0 M KOH, and the catalytic stability of C60/FeNiTPP-700-900 was maintained for at least 20 h. In the ORR process, the half-wave potential reaches 0.824 V (relative to the reversible hydrogen electrode potential), and has good stability and methanol tolerance. This work provides a new idea for the design and preparation of high efficiency and low cost bifunctional electrocatalysts.

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董新宇,强晋源,张荣乐,白秦玉,杨佳睿,陈扬,王海,冯永强.富勒烯/金属卟啉自组装衍生HER与ORR双功能电催化剂的合成及性能研究[J].精细化工,2025,42(3):

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  • 收稿日期:2024-03-15
  • 最后修改日期:2024-04-28
  • 录用日期:2024-04-01
  • 在线发布日期: 2025-03-14
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