辐射交联聚乙烯泡沫(IXPE)材料(卷材)是一种高档闭孔型泡沫材料。它是以低密度聚乙烯(LDPE)与乙烯——醋酸乙烯共聚物(EVA)为主要原料,添加发泡剂 AC 等多种化工原料,经混合、加工、成形,用工业电子加速器产生的高能电子束进行辐射处理...辐射交联聚乙烯泡沫(IXPE)材料(卷材)是一种高档闭孔型泡沫材料。它是以低密度聚乙烯(LDPE)与乙烯——醋酸乙烯共聚物(EVA)为主要原料,添加发泡剂 AC 等多种化工原料,经混合、加工、成形,用工业电子加速器产生的高能电子束进行辐射处理,再经发泡、定型、后处理等系列加工工艺生产出来的。这种材料具有优异的物理机械性能,不仅外观漂亮、手感舒适,而且热加工性非常好。IXPE 可广泛适用于车船制造业、空调制冷业、包装业、建筑、工程、农业、体育用品、娱乐及日常生活中。展开更多
Clean energy technologies such as water splitting and fuel cells have been intensively pursued in the last decade for their free pollution. However, there is plenty of fossil energy consumed in the preparation of the ...Clean energy technologies such as water splitting and fuel cells have been intensively pursued in the last decade for their free pollution. However, there is plenty of fossil energy consumed in the preparation of the catalysts,which results in a heavy pollution. Therefore, it is much desired but challenging to fabricate high-efficiency catalysts without extra energy input. Herein, we used a facile one-pot room-temperature method to synthesize a highly efficient electrocatalyst of nickel iron layered double hydroxide grown on Ni foam(NiFe LDH/NF) for oxygen evolution reaction(OER). The formation of the NiFe LDH follows a dissolutionprecipitation process, in which the acid conditions by hydrolysis of Fe^3+ combined with NO3^- could etch the NF to form Ni^2+. Then, the obtained Ni^2+ was co-precipitated with the hydrolysed Fe^3+ to in situ generate NiFe LDH on the NF. The NiFe LDH/NF exhibits excellent OER performance with a low potential of about 1.411 V vs. reversible hydrogen electrode(RHE) at a current density of 10 m A cm^-2, a small Tafel slope of 42.3 mV dec^-1 and a significantly low potential of ~1.452 V vs. RHE at 100 mA cm^-2 in 1 mol L^-1 KOH. Moreover, the material also keeps its original morphology and structure over 20 h. This energy-efficient strategy to synthesize NiFe LDH is highly promising for widespread application in OER catalyst industry.展开更多
文摘辐射交联聚乙烯泡沫(IXPE)材料(卷材)是一种高档闭孔型泡沫材料。它是以低密度聚乙烯(LDPE)与乙烯——醋酸乙烯共聚物(EVA)为主要原料,添加发泡剂 AC 等多种化工原料,经混合、加工、成形,用工业电子加速器产生的高能电子束进行辐射处理,再经发泡、定型、后处理等系列加工工艺生产出来的。这种材料具有优异的物理机械性能,不仅外观漂亮、手感舒适,而且热加工性非常好。IXPE 可广泛适用于车船制造业、空调制冷业、包装业、建筑、工程、农业、体育用品、娱乐及日常生活中。
基金financially supported by the National Natural Science Foundation of China (21425103 and 21501192)
文摘Clean energy technologies such as water splitting and fuel cells have been intensively pursued in the last decade for their free pollution. However, there is plenty of fossil energy consumed in the preparation of the catalysts,which results in a heavy pollution. Therefore, it is much desired but challenging to fabricate high-efficiency catalysts without extra energy input. Herein, we used a facile one-pot room-temperature method to synthesize a highly efficient electrocatalyst of nickel iron layered double hydroxide grown on Ni foam(NiFe LDH/NF) for oxygen evolution reaction(OER). The formation of the NiFe LDH follows a dissolutionprecipitation process, in which the acid conditions by hydrolysis of Fe^3+ combined with NO3^- could etch the NF to form Ni^2+. Then, the obtained Ni^2+ was co-precipitated with the hydrolysed Fe^3+ to in situ generate NiFe LDH on the NF. The NiFe LDH/NF exhibits excellent OER performance with a low potential of about 1.411 V vs. reversible hydrogen electrode(RHE) at a current density of 10 m A cm^-2, a small Tafel slope of 42.3 mV dec^-1 and a significantly low potential of ~1.452 V vs. RHE at 100 mA cm^-2 in 1 mol L^-1 KOH. Moreover, the material also keeps its original morphology and structure over 20 h. This energy-efficient strategy to synthesize NiFe LDH is highly promising for widespread application in OER catalyst industry.
