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2D PdAg Alloy Nanodendrites for Enhanced Ethanol Electroxidation
Advanced Materials ( IF 27.4 ) Pub Date : 2018-01-16 , DOI: 10.1002/adma.201706962 Wenjing Huang 1 , Xiaolin Kang 2 , Cheng Xu 2 , Junhua Zhou 1 , Jun Deng 1 , Yanguang Li 1 , Si Cheng 2
Advanced Materials ( IF 27.4 ) Pub Date : 2018-01-16 , DOI: 10.1002/adma.201706962 Wenjing Huang 1 , Xiaolin Kang 2 , Cheng Xu 2 , Junhua Zhou 1 , Jun Deng 1 , Yanguang Li 1 , Si Cheng 2
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The development of highly active and stable electrocatalysts for ethanol electroxidation is of decisive importance to the successful commercialization of direct ethanol fuel cells. Despite great efforts invested over the past decade, their progress has been notably slower than expected. In this work, the facile solution synthesis of 2D PdAg alloy nanodendrites as a high‐performance electrocatalyst is reported for ethanol electroxidation. The reaction is carried out via the coreduction of Pd and Ag precursors in aqueous solution with the presence of octadecyltrimethylammonium chloride as the structural directing agent. Final products feature small thickness (5–7 nm) and random in‐plane branching with enlarged surface areas and abundant undercoordinated sites. They exhibit enhanced electrocatalytic activity (large specific current 
) and excellent operation stability (as revealed from both the cycling and chronoamperometric tests) for ethanol electroxidation. Control experiments show that the improvement comes from the combined electronic and structural effects.
中文翻译：
二维PdAg合金纳米枝晶，用于增强乙醇的电氧化作用
用于乙醇电氧化的高活性和稳定的电催化剂的开发对于直接乙醇燃料电池的成功商业化具有决定性的重要性。尽管在过去的十年中付出了巨大的努力，但其进展却明显慢于预期。在这项工作中，已报道了将2D PdAg合金纳米枝晶作为高性能电催化剂的简便溶液合成，可用于乙醇电氧化。该反应是通过在水溶液中氯化十八烷基三甲基铵作为结构导向剂的情况下，将Pd和Ag前体在水溶液中进行共反应而进行的。最终产品具有较小的厚度（5–7 nm）和随机的平面内分支，具有扩大的表面积和大量未充分配合的位点。它们表现出增强的电催化活性（大比电流）和出色的操作稳定性（从循环和计时安培测试中都可以看出），可进行乙醇电氧化。控制实验表明，这种改进来自于电子和结构效应的结合。
更新日期：2018-01-16
) and excellent operation stability (as revealed from both the cycling and chronoamperometric tests) for ethanol electroxidation. Control experiments show that the improvement comes from the combined electronic and structural effects.
中文翻译：
二维PdAg合金纳米枝晶，用于增强乙醇的电氧化作用
用于乙醇电氧化的高活性和稳定的电催化剂的开发对于直接乙醇燃料电池的成功商业化具有决定性的重要性。尽管在过去的十年中付出了巨大的努力，但其进展却明显慢于预期。在这项工作中，已报道了将2D PdAg合金纳米枝晶作为高性能电催化剂的简便溶液合成，可用于乙醇电氧化。该反应是通过在水溶液中氯化十八烷基三甲基铵作为结构导向剂的情况下，将Pd和Ag前体在水溶液中进行共反应而进行的。最终产品具有较小的厚度（5–7 nm）和随机的平面内分支，具有扩大的表面积和大量未充分配合的位点。它们表现出增强的电催化活性（大比电流
）和出色的操作稳定性（从循环和计时安培测试中都可以看出），可进行乙醇电氧化。控制实验表明，这种改进来自于电子和结构效应的结合。
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