Amorphous Ni-S-Co alloy was prepared by means of chemical electro-deposition method on the foam nickel matrix. The surface morphology and microstructure of Ni-S-Co coatings were studied using SEM and XRD, and the elec...Amorphous Ni-S-Co alloy was prepared by means of chemical electro-deposition method on the foam nickel matrix. The surface morphology and microstructure of Ni-S-Co coatings were studied using SEM and XRD, and the electrochemical properties were tested by electrochemical methods. The results show that the coating has amorphous structure and the particles of the surface are fine with large specific surface area. The Ni-S-Co alloy is more active with lower potential for hydrogen evolution, higher exchange current density and lower activation energy compared with Ni and Ni-S electrode. Its hydrogen evolution reaction(HER) is enhanced, the size of particles of surface decreases and the surface area increases after being activated by KOH alkaline solution.展开更多
采用水热法制备硼硫(B/S)共掺杂纳米二氧化钛(B-S-TiO_2),并配制成浆料,利用丝网印刷技术在FTO导电玻璃上制备B-S-TiO_2薄膜;用化学浴沉积(CBD)法制备了CdS量子点敏化B-S-TiO_2薄膜电极,并用X射线衍射(XRD)、电子显微镜(TEM)、元素分析...采用水热法制备硼硫(B/S)共掺杂纳米二氧化钛(B-S-TiO_2),并配制成浆料,利用丝网印刷技术在FTO导电玻璃上制备B-S-TiO_2薄膜;用化学浴沉积(CBD)法制备了CdS量子点敏化B-S-TiO_2薄膜电极,并用X射线衍射(XRD)、电子显微镜(TEM)、元素分析能谱(EDS)和紫外–可见光谱对其进行表征分析;结果显示:B/S共掺杂不会改变TiO_2的晶型,掺杂后的TiO_2吸收边带发生明显红移,吸收强度显著增强;同样用化学浴沉积的方法制备Ni S工作电极,用改性的聚硫化物((CH3)4N)2S/((CH3)4N)2Sn)电解液,组装CdS量子点敏化硼硫(B/S)共掺杂纳米二氧化钛(B-S-TiO_2)太阳能电池,并测试电池光电性能。测试结果表明,在AM1.5G的照射下,电池的能量转化效率(η)由3.21%增大到3.69%,提高了14.9%,电池获得高达(Voc)1.218 V的开路电压和3.42 m A/cm2的短路光电流(Jsc),以及高达88.7%的填充因子(ff)。展开更多
基金Project(2003AA305980) supported by the National High-Tech Research and Development Program of China
文摘Amorphous Ni-S-Co alloy was prepared by means of chemical electro-deposition method on the foam nickel matrix. The surface morphology and microstructure of Ni-S-Co coatings were studied using SEM and XRD, and the electrochemical properties were tested by electrochemical methods. The results show that the coating has amorphous structure and the particles of the surface are fine with large specific surface area. The Ni-S-Co alloy is more active with lower potential for hydrogen evolution, higher exchange current density and lower activation energy compared with Ni and Ni-S electrode. Its hydrogen evolution reaction(HER) is enhanced, the size of particles of surface decreases and the surface area increases after being activated by KOH alkaline solution.
文摘采用水热法制备硼硫(B/S)共掺杂纳米二氧化钛(B-S-TiO_2),并配制成浆料,利用丝网印刷技术在FTO导电玻璃上制备B-S-TiO_2薄膜;用化学浴沉积(CBD)法制备了CdS量子点敏化B-S-TiO_2薄膜电极,并用X射线衍射(XRD)、电子显微镜(TEM)、元素分析能谱(EDS)和紫外–可见光谱对其进行表征分析;结果显示:B/S共掺杂不会改变TiO_2的晶型,掺杂后的TiO_2吸收边带发生明显红移,吸收强度显著增强;同样用化学浴沉积的方法制备Ni S工作电极,用改性的聚硫化物((CH3)4N)2S/((CH3)4N)2Sn)电解液,组装CdS量子点敏化硼硫(B/S)共掺杂纳米二氧化钛(B-S-TiO_2)太阳能电池,并测试电池光电性能。测试结果表明,在AM1.5G的照射下,电池的能量转化效率(η)由3.21%增大到3.69%,提高了14.9%,电池获得高达(Voc)1.218 V的开路电压和3.42 m A/cm2的短路光电流(Jsc),以及高达88.7%的填充因子(ff)。
