Preparation of nickel-cobalt nanowire arrays anode electro-catalyst and its application in direct urea/hydrogen peroxide fuel cell
Preparation of nickel-cobalt nanowire arrays anode electro-catalyst and its application in direct urea/hydrogen peroxide fuel cell
复制标题
镍钴纳米线阵列阳极电催化剂的制备及其在直接尿素/过氧化氢燃料电池中的应用
DOI：
10.1016/j.electacta.2016.01.215
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发表时间：
2016-05-01
影响因子：
6.6
通讯作者：
Cao, Dianxue
中科院分区：
文献类型：
--
作者：
Guo, Fen;Cheng, Kui;Cao, Dianxue
以聚碳酸酯膜为模板，采用一步恒流沉积法制备了镍钴纳米线阵列电极。通过将Ni和Co溶液中的Co比例调整为10%，获得了相对较低的起始电位和最高的尿素电氧化电流密度的最佳Ni-Co NWAs电极。通过构建单个直接尿素/过氧化氢（H2O2）燃料电池，研究了其催化性能。结果表明，以9.0 mol L-1的KOH和0.33 mol L-1的尿素为阳极液，H2SO4和H2O2为阴极液，在室温下可获得峰值功率密度为7.4 mW cm(-2)，开路电压为0.92 V。此外，尿素/H2O2燃料电池在短期持续测试中也表现出出色的稳定性。(C) 2016 Elsevier Ltd.版权所有。
Nickel-cobalt nanowire arrays (Ni-Co NWAs) electrode is prepared by one-step galvanostatic electrodeposition with a polycarbonate membrane as the template. By adjusting the Co proportion in the Ni and Co bath solution into 10%, the optimal Ni-Co NWAs electrode in terms of relatively lower onset potential and highest current density towards urea electro-oxidation is obtained. Its catalytic performance is investigated by constructing single direct urea/hydrogen peroxide (H2O2) fuel cell. Results show that a peak power density of 7.4 mW cm(-2) and an open circuit voltage of 0.92 V are achieved at room temperature when 9.0 mol L-1 KOH and 0.33 mol L-1 urea are used as the anolyte, H2SO4 and H2O2 as the catholyte. Additionally, the urea/H2O2 fuel cell also demonstrates excellent stability during short term duration test. (C) 2016 Elsevier Ltd. All rights reserved.