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| 1 | NiCoP合金纳米棒阵列制备及电催化析氢性能研究显示文摘开发非贵金属析氢电催化剂对于解决当前严重的能源危机具有现实意义。本文在导电金属基底泡沫镍上原位生长NiCoP纳米棒阵列,该自支撑合金电极材料显示出优异的电催化析氢性能,在1 mol/L氢氧化钾电解液中,达到电流密度10 mA/cm^2时,其仅需要过电位93 mV,此外该催化剂还具有较低的塔菲尔斜率、电荷迁移电阻和较高的催化稳定性。 | 于博 李研 刘辉 张晓庆 | 2020 | 人工晶体学报2020,49,2: | 4 |
| 2 | 过渡金属磷化物用于电解水析氢反应的研究进展显示文摘近年来,随着社会的发展,传统化石能源消耗急剧增加,环境问题日益加剧,可再生清洁能源的开发迫在眉睫。电化学水分解法是公认为将电能转化为氢燃料的一种实用策略。因此,为了实现大规模制氢,开发低成本、资源丰富、高效且稳定的电催化剂至关重要。过渡金属磷化物具有价格低廉、资源丰富、化学稳定性等特点,被广泛应用于电催化析氢领域。本文总结了过渡金属磷化物用于电催化析氢的制备方法,且详细概述了从形貌设计、界面调控、材料复合3个方面,提高电解水析氢反应性能,并对其今后发展趋势以及面临的机遇和挑战进行展望。 | 王钟 刘家岐 刘琛 袁双 王强 | 2021 | 中国有色金属学报2021,31,11: | 3 |
| 3 | FeNi doped porous carbon as an efficient catalyst for oxygen evolution reaction显示文摘Polymer-derived porous carbon was used as a support of iron and nickel species with an objective to obtain an efficient oxygen reduction reaction(OER)catalyst.The surface features were extensively characterized using X-ray diffraction,X-ray photoelectron spectroscopy and high-resolution transmission electron microscopy.On FeNi-modified carbon the overpotential for OER was very low(280 mV)and comparable to that on noble metal catalyst IrO_(2).The electrochemical properties have been investigated to reveal the difference between the binary alloy-and single metal-doped carbons.This work demonstrates a significant step for the development of low-cost,environmentally-friendly and highly-efficient OER catalysts. | Jun-Wei Zhang Hang Zhang Tie-Zhen Ren Zhong-Yong Yuan Teresa JBandosz | 2021 | Frontiers of Chemical Science and Engineering2021,15,2: | 1 |
| 4 | Bamboo-like N-doped carbon nanotubes encapsulating M(Co,Fe)-Ni alloy for electrochemical production of syngas with potential-independent CO/H_(2) ratios显示文摘The electrochemical conversion of CO_(2)-H_(2)O into CO-H_(2) using renewable energy is a promising technique for clean syngas production.Low-cost electrocatalysts to produce tunable syngas with a potential-independent CO/H_(2) ratio are highly desired.Herein,a series of N-doped carbon nanotubes encapsulating binary alloy nanoparticles(MxNi-NCNT,M=Fe,Co)were successfully fabricated through the co-pyrolysis of melamine and metal precursors.The MxNi-NCNT samples exhibited bamboo-like nanotubular structures with a large specific surface area and high degree of graphitization.Their electrocatalytic performance for syngas production can be tuned by changing the alloy compositions and modifying the electronic structure of the carbon nanotube through the encapsulated metal nanoparticles.Consequently,syngas with a wide range of CO/H_(2) ratios,from 0.5:1 to 3.4:1,can be produced on MxNi-NCNT.More importantly,stable CO/H_(2) ratios of 2:1 and 1.5:1,corresponding to the ratio to produce biofuels by syngas fermentation,could be realized on Co1Ni-NCNT and Co2Ni-NCNT,respectively,over a potential window of-0.8 to-1.2 V versus the reversible hydrogen electrode.Our work provides an approach to develop low-cost and potential-independent electrocatalysts to effectively produce syngas with an adjustable CO/H_(2) ratio from electrochemical CO_(2) reduction. | Jinxiao Bo Mei Li Xinli Zhu Qingfeng Ge Jinyu Han Hua Wang | 2022 | Frontiers of Chemical Science and Engineering2022,16,4: | 0 |
| 5 | Noble-metal-free cobalt hydroxide nanosheets for efficient electrocatalytic oxidation显示文摘Cobalt hydroxide has been emerging as a promising catalyst for the electrocatalytic oxidation reactions,including the oxygen evolution reaction(OER)and glucose oxidation reaction(GOR).Herein,we prepared cobalt hydroxide nanoparticles(CoHP)and cobalt hydroxide nanosheets(CoHS)on nickel foam.In the electrocatalytic OER,CoHS shows an overpotential of 306 mV at a current density of 10 mA·cm^-2.This is enhanced as compared with that of CoHP(367 mV at 10 mA·cm^-2).In addition,CoHS also exhibits an improved performance in the electrocatalytic GOR.The improved electrocatalytic performance of CoHS could be due to the higher ability of the two-dimensional nanosheets on CoHS in electron transfer.These results are useful for fabricating efficient catalysts for electrocatalytic oxidation reactions. | Jie Lan Daizong Qi Jie Song Peng Liu Yi Liu Yun-Xiang Pan | 2020 | Frontiers of Chemical Science and Engineering2020,14,6: | 0 |