| Related citation: | Tongtong Zhu,Haige Wang,Xiaopeng Li,Yaozu Liao,Meifang Zhu.Boosting Hydrogen Evolution and Oxygen Reduction Performances of Pd/C upon Surface Phosphorization[J].Journal of Harbin Institute Of Technology(New Series),2022,29(6):74-88.DOI:10.11916/j.issn.1005-9113.2022036. |
|
| Author Name | Affiliation | | Tongtong Zhu | State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China | | Haige Wang | State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China | | Xiaopeng Li | State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China | | Yaozu Liao | State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China | | Meifang Zhu | State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China |
|
| Abstract: |
| Simultaneous heterostructure and composition engineering is an effective route to construct electrocatalyst of high performance. Conjugated microporous polymer (CMP) is a new emerging platform material with designable porosity and functionality. Here, a facile CMP-guest chemistry method was presented to prepare PdP2@Pd/C heterostructure with bifunctional electrocatalytic activity. The formation of heterostructure relies on a CMP precursor consisting of nitrogen groups that allow binding Pd species and introducing phosphorus inclusion. The Pd-bound CMP precursor formed in-situ could be directly converted into nitrogen- and phosphide-doped porous carbon (NPC) during pyrolysis, while P diffused to the Pd/C interface results in shallow phosphorization. The as-prepared NPC consisting of PdP2@Pd/C (Pd content 4 wt%) heterostructure demonstrated significantly enhanced electrocatalytic performances including a promising HER activity (58mV @ 10 mA/cm2), and an ORR activity approaching commercial 20 wt% Pd/C together with excellent long-term stability. Our work illustrates the intriguing power of CMP-guest potential in heterostructure engineering. |
| Key words: Conjugated microporous polymers Palladium phosphide heterostructures Bifunctional electrocatalysts Hydrogen evolution reaction Oxygen reduction reaction Document Code |
| DOI：10.11916/j.issn.1005-9113.2022036 |
| Clc Number:TQ426 |
| Fund: |
|
| Descriptions in Chinese: |
| 表面磷化策略提高 Pd/C 的析氢和氧还原性能 朱桐桐， 王海鸽， 李小鹏， 廖耀祖， 朱美芳 （东华大学 材料科学与工程学院 纤维材料改性国家重点实验室，上海 201620） 中文说明： 构筑金属异质结构是实现高性能电催化剂的有效途径之一，共轭微孔聚合物（CMP）是一种具有可设计孔隙率的功能新材料。基于此，本文提出利用CMP 客体化学方法来制备具有双功能电催化活性的PdP2@Pd/C 异质结构。该异质结构的形成依赖于由氮基团组成的 CMP前体，它允许结合 Pd 物质并引入磷掺杂剂。原位形成的 Pd 负载CMP 前体在热解过程中可直接转化为氮和磷化物掺杂的多孔碳（NPC），而 P 则扩散到 Pd/C 界面导致Pd颗粒表面磷化。所制备的由 PdP2@Pd/C（Pd 含量 4 wt.%）异质结构组成的 NPC 表现出显著增强的电催化性能，包括具有高析氢活性（58mV @ 10 mA/cm2）和接近商业化 20 wt.% Pt/Cd电极的氧还原活性以及出色的循环稳定性。该研究指出了CMP作为客体，在构筑异质结构的电催化剂方面展现的巨大潜力。 关键词：共轭微孔聚合物，钯磷异质结构，双功能电催化剂，析氢反应，氧还原反应 |
