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Porous palladium phosphide nanotubes for formic acid electrooxidation
Carbon Energy ( IF 19.5 ) Pub Date : 2022-01-10 , DOI: 10.1002/cey2.170 Tian‐Jiao Wang 1 , Yu‐Chuan Jiang 1 , Jia‐Wei He 1 , Fu‐Min Li 1 , Yu Ding 1 , Pei Chen 1 , Yu Chen 1
Carbon Energy ( IF 19.5 ) Pub Date : 2022-01-10 , DOI: 10.1002/cey2.170 Tian‐Jiao Wang 1 , Yu‐Chuan Jiang 1 , Jia‐Wei He 1 , Fu‐Min Li 1 , Yu Ding 1 , Pei Chen 1 , Yu Chen 1
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The development of an efficient catalyst for formic acid electrocatalytic oxidation reaction (FAEOR) is of great significance to accelerate the commercial application of direct formic acid fuel cells (DFAFC). Herein, palladium phosphide (PdxPy) porous nanotubes (PNTs) with different phosphide content (i.e., Pd3P and Pd5P2) are prepared by combining the self-template reduction method of dimethylglyoxime-Pd(II) complex nanorods and succedent phosphating treatment. During the reduction process, the self-removal of the template and the continual inside–outside Ostwald ripening phenomenon are responsible for the generation of the one-dimensional hollow and porous architecture. On the basis of the unique synthetic procedure and structural advantages, Pd3P PNTs with optimized phosphide content show outstanding electroactivity and stability for FAEOR. Importantly, the strong electronic effect between Pd and P promotes the direct pathway of FAEOR and inhibits the occurrence of the formic acid decomposition reaction, which effectively enhances the FAEOR electroactivity of Pd3P PNTs. In view of the facial synthesis, excellent electroactivity, high stability, and unordinary selectivity, Pd3P PNTs have the potential to be an efficient anode electrocatalyst for DFAFC.
中文翻译：
用于甲酸电氧化的多孔磷化钯纳米管
开发一种高效的甲酸电催化氧化反应（FAEOR）催化剂，对于加速直接甲酸燃料电池（DFAFC）的商业化应用具有重要意义。在此，具有不同磷化物含量（即 Pd 3 P 和 Pd 5 P 2 ）的磷化钯 (Pd x P y ) 多孔纳米管 (PNT))采用二甲基乙二肟-Pd(II)复合纳米棒的自模板还原法与后续磷化处理相结合的方法制备。在还原过程中，模板的自我去除和持续的内外奥斯特瓦尔德成熟现象是产生一维中空和多孔结构的原因。基于独特的合成工艺和结构优势，磷化物含量优化的Pd 3 P PNTs在FAEOR中表现出优异的电活性和稳定性。重要的是，Pd和P之间的强电子效应促进了FAEOR的直接通路，抑制了甲酸分解反应的发生，有效增强了Pd 3的FAEOR电活性P PNT。鉴于表面合成、优异的电活性、高稳定性和非同寻常的选择性，Pd 3 P PNTs 具有成为 DFAFC 的高效阳极电催化剂的潜力。
更新日期：2022-01-10
中文翻译：
用于甲酸电氧化的多孔磷化钯纳米管
开发一种高效的甲酸电催化氧化反应（FAEOR）催化剂，对于加速直接甲酸燃料电池（DFAFC）的商业化应用具有重要意义。在此，具有不同磷化物含量（即 Pd 3 P 和 Pd 5 P 2 ）的磷化钯 (Pd x P y ) 多孔纳米管 (PNT))采用二甲基乙二肟-Pd(II)复合纳米棒的自模板还原法与后续磷化处理相结合的方法制备。在还原过程中，模板的自我去除和持续的内外奥斯特瓦尔德成熟现象是产生一维中空和多孔结构的原因。基于独特的合成工艺和结构优势，磷化物含量优化的Pd 3 P PNTs在FAEOR中表现出优异的电活性和稳定性。重要的是，Pd和P之间的强电子效应促进了FAEOR的直接通路，抑制了甲酸分解反应的发生，有效增强了Pd 3的FAEOR电活性P PNT。鉴于表面合成、优异的电活性、高稳定性和非同寻常的选择性，Pd 3 P PNTs 具有成为 DFAFC 的高效阳极电催化剂的潜力。
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