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学者姓名：郭永榔
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Abstract ：
In this work, the PtAg2/C-D and PtPd3Ag5/C-D catalysts with Pt-rich surfaces were fabricated via chemical reduction following electrochemical dealloying. The as-prepared catalysts were characterized by X-ray diffraction (XRD), transmission electron spectroscopy (TEM), atomic adsorption spectroscopy (AAS), X-ray electron spectroscopy (XPS) and electrochemical methods It is found that external Ag atoms are dealloyed by the cyclic voltammetry (CV) to expose more Pt active sites on the surface, which enhances the electrocatalytic performance greatly. The addition of Pd as another sacrificing element triggers higher activity due to the synergistic effect between Pd and Pt. The mass activity of as-prepared PtAg2/C-D catalyst reaches 3.35 times as high as that of Pt/C. The PtPd3Ag5/C-D catalyst has the highest electrocatalytic activity of 4500 mA mg(-1), which is 6.22 and 1.87 times as high as those of mono component Pt/C and Pd/C, respectively. Their high electrocatalytic activity is attributed to electronic effects, oxygen-containing species from Pd oxides and higher utilization of Pt. (C) 2017 Elsevier Ltd. All rights reserved.
Keyword ：
Direct ethanol fuel cells Direct ethanol fuel cells Electrochemical dealloying Electrochemical dealloying Ethanol oxidation Ethanol oxidation Platinum-Palladium-Silver catalysts Platinum-Palladium-Silver catalysts Platinum-rich surfaces Platinum-rich surfaces
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| GB/T 7714 | Yang, Zhongzhao , Wang, Xinle , Kang, Xiang et al. The PtPdAg/C electrocatalyst with Pt-rich surfaces via electrochemical dealloying of Ag and Pd for ethanol oxidation [J]. | ELECTROCHIMICA ACTA , 2017 , 236 : 72-81 . |
| MLA | Yang, Zhongzhao et al. "The PtPdAg/C electrocatalyst with Pt-rich surfaces via electrochemical dealloying of Ag and Pd for ethanol oxidation" . | ELECTROCHIMICA ACTA 236 (2017) : 72-81 . |
| APA | Yang, Zhongzhao , Wang, Xinle , Kang, Xiang , Zhang, Shiqun , Guo, Yonglang . The PtPdAg/C electrocatalyst with Pt-rich surfaces via electrochemical dealloying of Ag and Pd for ethanol oxidation . | ELECTROCHIMICA ACTA , 2017 , 236 , 72-81 . |
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The effects of several rare earth oxides and fluorine-containing compounds as additives on the hydrogen evolution at the negative plates containing commercial and purified carbon materials in valve-regulated lead-acid (VRLA) batteries have been studied by means of the constant current polarization and hydrogen gassing measurements. The activated carbon (AC) and iron impurity in the carbon materials greatly accelerate the hydrogen evolution. La2O3, Sm2O3, Gd2O3, Nd2O3, Dy2O3 and polytetrafluoroethlene (PTFE) as electrolyte additives inhibit the hydrogen evolution. When the hydrogen evolution polarization potential is small as in the case of the oxygen depolarization in the oxygen cycles, the addition of 0.025% PTFE and 0.025% Dy2O3 additives to electrolyte increase its overpotential, but these two additives can promote the hydrogen evolution at negative plates containing activated carbon (AC), expanded graphite (EG) or flake graphite (FG) with low impurity contents. In the test of cycle life of the 12 V 12 Ah VRLA batteries with the negative plate containing acetylene black (AB), the combined additive of PTFE and Dy2O3 greatly increases the charge efficiency and thus decreases water loss.
Keyword ：
carbon materials carbon materials electrolyte additives electrolyte additives hydrogen evolution hydrogen evolution negative plate negative plate valve-regulated lead-acid batteries valve-regulated lead-acid batteries
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| GB/T 7714 | Hu, Jingcheng , Wu, Chengbin , Wang, Xinle et al. Additives of Suppressing Hydrogen Evolution at Carbon-Containing Negative Plates of Valve-Regulated Lead-Acid Batteries [J]. | INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE , 2016 , 11 (2) : 1416-1433 . |
| MLA | Hu, Jingcheng et al. "Additives of Suppressing Hydrogen Evolution at Carbon-Containing Negative Plates of Valve-Regulated Lead-Acid Batteries" . | INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 11 . 2 (2016) : 1416-1433 . |
| APA | Hu, Jingcheng , Wu, Chengbin , Wang, Xinle , Guo, Yonglang . Additives of Suppressing Hydrogen Evolution at Carbon-Containing Negative Plates of Valve-Regulated Lead-Acid Batteries . | INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE , 2016 , 11 (2) , 1416-1433 . |
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Abstract ：
本发明属于直接乙醇燃料电池阳极催化剂的技术领域，具体涉及一种提高燃料电池阳极催化剂抗中毒性的复合载体。具体为：将活化处理后的碳化钛和预处理后的碳材料按质量比0.1~1 : 1复合制得燃料电池阳极催化剂载体；所述的碳材料包括导电炭黑和多壁碳纳米管中的一种。该复合载体担载单一或多元贵金属后，制得质子交换膜阳极催化剂，应用于碱性燃料电池的有机小分子的阳极电催化氧化。相比其它单一碳载体，本发明的复合载体表面可以提供更多的含氧物种(OH吸附)，这些含氧物种通过双功能机理可以促进催化剂上吸附反应中间物的氧化，有效地提高催化剂对中毒物种(CO吸附)的抵抗能力，从而提高燃料电池的性能。
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| GB/T 7714 | 郭永榔 , 张诗群 . 一种提高燃料电池阳极催化剂抗中毒性的复合载体 : CN201610135099.5[P]. | 2016/3/10 . |
| MLA | 郭永榔 et al. "一种提高燃料电池阳极催化剂抗中毒性的复合载体" : CN201610135099.5. | 2016/3/10 . |
| APA | 郭永榔 , 张诗群 . 一种提高燃料电池阳极催化剂抗中毒性的复合载体 : CN201610135099.5. | 2016/3/10 . |
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The MnO-coated Li3V2(PO4)(3)/C (LVP/C) cathode material was successfully synthesized by a sol-gel method. The nanolayer structure of MnO coating on the surface of LVP/C is demonstrated by the transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) etc. It indicates that the manganese oxide in the coating layer appears in the form of MnO. The MnO coating prevents the preferential growth of LVP at the (1 2 0) crystal plane. The key function of MnO modification is to improve the structure of SEI film. The as-prepared 4% MnO-coated LVP/C has the best electrochemical behavior. The MnO coating greatly enhances the stability of the SEI structure and Li+ ion conductivity, and reduces the electrode polarization, so the as-prepared 4% MnO-coated LVP/C has excellent rate capability and cycle performance. Its apparent Li+ diffusion coefficient (D-Li(+)) reaches 4.0 x 10(-9) cm(2) s(-1). In the range of 3.0-43 V, its specific capacities are 121.4 and 108.4 mAh g(-1) in the 1st and 300th cycles at 10C rate, respectively. Its capacity retention reaches 89.3%, but it is only 75.6% for LVP/C without MnO coating. (C) 2014 Elsevier B.V. All rights reserved.
Keyword ：
Composite materials Composite materials Electrochemical properties Electrochemical properties Sol-gel growth Sol-gel growth
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| GB/T 7714 | Yang, Zhongzhao , Huang, Caixia , Ke, Rongping et al. Effects of MnO nanolayer coating on Li3V2(PO4)(3)/C cathode material for lithium-ion batteries [J]. | MATERIALS CHEMISTRY AND PHYSICS , 2015 , 151 : 259-266 . |
| MLA | Yang, Zhongzhao et al. "Effects of MnO nanolayer coating on Li3V2(PO4)(3)/C cathode material for lithium-ion batteries" . | MATERIALS CHEMISTRY AND PHYSICS 151 (2015) : 259-266 . |
| APA | Yang, Zhongzhao , Huang, Caixia , Ke, Rongping , Xi, Jingchao , Guo, Yonglang . Effects of MnO nanolayer coating on Li3V2(PO4)(3)/C cathode material for lithium-ion batteries . | MATERIALS CHEMISTRY AND PHYSICS , 2015 , 151 , 259-266 . |
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The battery temperature, H2SO4 distribution, Pb2+ ion concentration and composition of the plates during the plate soaking of the 12 V 12 Ah valve-regulated lead-acid (VRLA) battery are studied. A simulated cell composed by two pure Pb plates and the absorptive glass mat (AGM) separator is used to investigate the growth of the lead dendrite in the separator, which is verified by analyzing the faulty batteries after the formation and the failure batteries after the usage. It is found that the H2SO4 is exhausted very quickly after filling and the separator near the plates can become neutral during soaking. Low acidity, high temperature and small PbSO4 particle size will increase the Pb2+ ion concentration. Higher Pb2+ ion concentration makes more PbSO4 tend to deposit on the coarse glass fibers, develop along them and even enwrap the entire fiber. And the fine PbSO4 crystals are continually transformed into large PbSO4 crystals via dissolution-deposition. In the subsequent charge, these PbSO4 crystals will be reduced to the club-shaped lead dendrites and may lead to short circuit of the battery. (C) 2015 Elsevier B.V. All rights reserved.
Keyword ：
Absorptive glass mat separator Absorptive glass mat separator Lead dendrite Lead dendrite Soaking process Soaking process Sodium sulfate Sodium sulfate Valve-regulated lead-acid batteries Valve-regulated lead-acid batteries
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| GB/T 7714 | Zeng, Yanzhen , Hu, Jingcheng , Ye, Wenmei et al. Investigation of lead dendrite growth in the formation of valve-regulated lead-acid batteries for electric bicycle applications [J]. | JOURNAL OF POWER SOURCES , 2015 , 286 : 182-192 . |
| MLA | Zeng, Yanzhen et al. "Investigation of lead dendrite growth in the formation of valve-regulated lead-acid batteries for electric bicycle applications" . | JOURNAL OF POWER SOURCES 286 (2015) : 182-192 . |
| APA | Zeng, Yanzhen , Hu, Jingcheng , Ye, Wenmei , Zhao, Wenchao , Zhou, Gang , Guo, Yonglang . Investigation of lead dendrite growth in the formation of valve-regulated lead-acid batteries for electric bicycle applications . | JOURNAL OF POWER SOURCES , 2015 , 286 , 182-192 . |
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本发明公开了一种测量铅酸蓄电池超细玻璃纤维隔板铅枝晶短路的方法，包括以下步骤：(1)对待测超细玻璃纤维隔板、纯铅片进行裁剪处理，用以制备测试电池；(2)对测试电池进行恒流充电，测绘电压 时间曲线，获得从开始充电到发生短路的时间值；(3)测定测试电池在恒流充电时的电压变化，通过测得的这些数值判断超细玻璃纤维隔板是否容易发生短路。本发明通过设计一种模拟电池的化成充电条件的装置，以判断AGM隔板是否在电池内化成充电过程容易导致短路，从而快速判断和挑选出合适的阀控式铅酸蓄电池用AGM隔板。该方法操作过程简单，实验仪器简单易得，明显缩短了检测周期，值得推广。
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| GB/T 7714 | 郭永榔 , 曾燕真 . 测量铅酸蓄电池超细玻璃纤维隔板铅枝晶短路的方法 : CN201510001788.2[P]. | 2015/1/5 . |
| MLA | 郭永榔 et al. "测量铅酸蓄电池超细玻璃纤维隔板铅枝晶短路的方法" : CN201510001788.2. | 2015/1/5 . |
| APA | 郭永榔 , 曾燕真 . 测量铅酸蓄电池超细玻璃纤维隔板铅枝晶短路的方法 : CN201510001788.2. | 2015/1/5 . |
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Pt nanoparticles deposited on manganese oxide-carbon nanotubes (Pt/MnOx-CNTs) are prepared by a microwave-assisted polyol method. Their structure characterizations are carried out by Fourier transform infrared spectrometry (FTIR), thermogravimetric analysis (TGA), X-ray diffraction (XRD), transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS) measurements, indicating that MnOx nanoparticles cover the surface of CNTs and then Pt nanoparticles are uniformly dispersed on MnOx-CNTs with the average particle size of about 2.2 nm. Ethanol oxidation peak current on Pt/MnOx-CNTs (1141.4 mA mg(-1) Pt) is 1.82 times higher than that on Pt/CNTs (626.4 mA mg(-1) Pt) and 1.28 times higher than that on PtRu/C (JM) (888.6 mA mg(-1) Pt). The Pt/MnOx-CNT catalyst presents not only excellent electrocatalytic activity and very high stability for ethanol oxidation, but also high tolerance to the poisonous carbonaceous intermediates generated during ethanol oxidation compared to Pt/CNT catalyst. This is attributed to the excellent proton conductivity of MnOx and the synergistic effect between Pt and MnOx. The optimum mass ratio of MnOx to CNTs is 1:1 in the Pt/MnOx-CNT catalysts. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Keyword ：
Ethanol oxidation Ethanol oxidation Fuel cells Fuel cells Manganese oxides Manganese oxides Microwave method Microwave method Platinum nanoparticles Platinum nanoparticles
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| GB/T 7714 | Cai, Jindi , Huang, Yiyin , Huang, Binbin et al. Enhanced activity of Pt nanoparticle catalysts supported on manganese oxide-carbon nanotubes for ethanol oxidation [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2014 , 39 (2) : 798-807 . |
| MLA | Cai, Jindi et al. "Enhanced activity of Pt nanoparticle catalysts supported on manganese oxide-carbon nanotubes for ethanol oxidation" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 39 . 2 (2014) : 798-807 . |
| APA | Cai, Jindi , Huang, Yiyin , Huang, Binbin , Zheng, Shiying , Guo, Yonglang . Enhanced activity of Pt nanoparticle catalysts supported on manganese oxide-carbon nanotubes for ethanol oxidation . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2014 , 39 (2) , 798-807 . |
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This work presents fabrication of a novel ternary PdCuPb/C nanocatalyst via reducing Cu2+ and Pb2+ ions on carbon surface followed by Pd2+ ion substitution. X-ray power diffraction, transmission electron microscope, X-ray photoelectron spectroscopy, cyclic voltammogram, constant potential and linear current sweep tests were used to characterize the catalyst. More Cu relative to Pb was substituted by Pd2+ ions to form the PdCuPb/C catalyst. The three metals were uniformly dispersed on carbon surface. The PdCuPb/C catalyst can produce abundant oxygenated species on its surface for oxidative removal of poisonous intermediates at a low potential. Owing to the promoting effects of the factors above, the PdCuPb/C nanocatalyst exhibited excellent activity for ethanol electrooxidation in alkaline medium. The catalytic stability and anti-poisoning ability were also greatly improved. Crown Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Keyword ：
Alkaline medium Alkaline medium Ethanol oxidation Ethanol oxidation Palladium Palladium Substitution synthesis Substitution synthesis Ternary catalyst Ternary catalyst
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| GB/T 7714 | Huang, Yiyin , Guo, Yonglang , Wang, Yaobing et al. Synthesis and performance of a novel PdCuPb/C nanocatalyst for ethanol electrooxidation in alkaline medium [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2014 , 39 (9) : 4274-4281 . |
| MLA | Huang, Yiyin et al. "Synthesis and performance of a novel PdCuPb/C nanocatalyst for ethanol electrooxidation in alkaline medium" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 39 . 9 (2014) : 4274-4281 . |
| APA | Huang, Yiyin , Guo, Yonglang , Wang, Yaobing , Yao, Jiannian . Synthesis and performance of a novel PdCuPb/C nanocatalyst for ethanol electrooxidation in alkaline medium . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2014 , 39 (9) , 4274-4281 . |
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The PdSbx/C (x = 0, 0.5, 0.1, 0.15 and 0.2) nanocatalysts were synthesized by the microwave treatment. The structure and morphology of the as-prepared catalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). It is found that the addition of antimony into the Pd/C catalyst leads to formation of PdSb alloy and reduction in particle size. The electrochemical measurements indicate that the PdSb0.15/C catalyst has high electrocatalytic activity and excellent anti-poisoning ability towards ethanol oxidation in alkaline medium. The onset potential of ethanol oxidation on PdSb0.15/C shifts in negative direction as compared with Pd/C. The mass activity of PdSb0.15/C for ethanol oxidation reaches 3690 mA mg(-1) Pd, which is ca. 1.7 times higher than that of Pd/C. The enhanced performance of PdSb0.15/C is mainly ascribed to the bifunctional mechanism and electronic effect. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Keyword ：
Alkaline medium Alkaline medium Ethanol oxidation Ethanol oxidation Microwave method Microwave method Palladium-antimony Palladium-antimony Pd-based catalyst Pd-based catalyst
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| GB/T 7714 | Cai, Jindi , Huang, Yiyin , Guo, Yonglang . Facile synthesis of PdSbx/C nanocatalyst with high performance for ethanol electro-oxidation in alkaline medium [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2014 , 39 (32) : 18256-18263 . |
| MLA | Cai, Jindi et al. "Facile synthesis of PdSbx/C nanocatalyst with high performance for ethanol electro-oxidation in alkaline medium" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 39 . 32 (2014) : 18256-18263 . |
| APA | Cai, Jindi , Huang, Yiyin , Guo, Yonglang . Facile synthesis of PdSbx/C nanocatalyst with high performance for ethanol electro-oxidation in alkaline medium . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2014 , 39 (32) , 18256-18263 . |
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A novel Cu@PdCu/C catalyst with the core shell structure is prepared by the galvanic replacement between Pd2+ ions and Cu particles. It is characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), energy-dispersive X-ray spectra (EDX) and electrochemical measurements. The Cu@PdCu nanoparticles are composed of the Cu core and PdCu alloying shell with a thickness of ca. 0.5 nm. The peak current density of ethanol oxidation on Cu@PdCu/C is 166.0 mA cm(-2), which is 2.78 times higher than that on Pd/C catalyst (59.8 mA cm(-2)). Durability and poisoning tolerance of this catalyst are also greatly improved. (C) 2014 Elsevier B.V. All rights reserved.
Keyword ：
Alkaline media Alkaline media Core-shell structure Core-shell structure Ethanol oxidation Ethanol oxidation Palladium-based catalyst Palladium-based catalyst Palladium-Copper Palladium-Copper
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| GB/T 7714 | Cai, Jindi , Zeng, Yanzhen , Guo, Yonglang . Copper@palladium-copper core-shell nanospheres as a highly effective electrocatalyst for ethanol electro-oxidation in alkaline media [J]. | JOURNAL OF POWER SOURCES , 2014 , 270 : 257-261 . |
| MLA | Cai, Jindi et al. "Copper@palladium-copper core-shell nanospheres as a highly effective electrocatalyst for ethanol electro-oxidation in alkaline media" . | JOURNAL OF POWER SOURCES 270 (2014) : 257-261 . |
| APA | Cai, Jindi , Zeng, Yanzhen , Guo, Yonglang . Copper@palladium-copper core-shell nanospheres as a highly effective electrocatalyst for ethanol electro-oxidation in alkaline media . | JOURNAL OF POWER SOURCES , 2014 , 270 , 257-261 . |
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