So far, the application of fullerene derivative support in electrocatalysis has been limited by fullerene’s low electronic conductivity and the difficulty in film morphology control. Although highly conductive (1.5 s m⁻¹) fullerene ammonium iodide (PCBANI) had been demonstrated to be a potential support, the solid self-assembled film is not of benefit for metallic nanoparticle (NP) to exhibit catalytic activity. In this work, we found solvent engineering of pristine PCBANI aggregate could maintain stacked short-range assembly structure and porous morphology. Moreover, PCBANI film fabricated from the optimized DMSO/methanol could immobilize Pd NPs with a uniform size of around 4.8 ± 1.7 nm which was characterized by SEM, TEM, and SAED. The resulting Pd/PCBANI-1-coated electrode exhibits a mass-specific activity for Pd of 3361.0 mA mg⁻¹ at a scan rate of 50 mV s⁻¹ and good stability toward alcohol electrooxidation, which are both significantly higher than that of the Pd/PCBANI-2 fabricated from PCBANI’s acetic acid/methanol dispersion and commercial Pd/C (active carbon). To the best of our knowledge, Pd/PCBANI-1 exhibits almost the highest catalytic activity among the existing fullerene-based Pd nanocatalysts. The high performance of the as-fabricated catalyst is attributed to highly conductive and porous PCBANI support, good dispersibility of Pd NPs on support, and favorable mass transfer.

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迄今为止，由于富勒烯的低电子电导率和膜形态控制的困难，限制了富勒烯衍生物载体在电催化中的应用。虽然导电性高（1.5 s m ^-1）富勒烯碘化铵（PCBANI）已被证明是潜在的载体，固体自组装膜不利于金属纳米颗粒（NP）表现出催化活性。在这项工作中，我们发现原始PCBANI聚集体的溶剂工程可以保持堆叠的短程组装结构和多孔形态。此外，由优化的DMSO /甲醇制备的PCBANI膜可以固定4.8 1.7 nm左右大小的Pd NP，通过SEM，TEM和SAED对其进行表征。将所得的Pd / PCBANI -1-涂覆的电极显示出对3361.0毫安毫克的钯特定的质量活性^-1以50毫伏s的扫描速率^-1以及对醇电氧化的良好稳定性，均明显高于由PCBANI的乙酸/甲醇分散体和市售Pd / C（活性炭）制成的Pd / PCBANI-2。据我们所知，Pd / PCBANI-1在现有的基于富勒烯的Pd纳米催化剂中几乎表现出最高的催化活性。制成的催化剂的高性能归因于高导电性和多孔性的PCBANI载体，Pd NP在载体上的良好分散性以及良好的传质性。

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