氯化镍(NiCl_(2))作为一种高电位热电池正极材料,自身不佳的导电性限制了其在热电池中的应用。在本研究中,利用液相混合-低温煅烧工艺制备了亚铜离子掺杂的氯化镍(NiCl_(2)-Cu_(x))。其中NiCl_(2)-Cu5具备最佳的电化学性能,与NiCl_(2)相...氯化镍(NiCl_(2))作为一种高电位热电池正极材料,自身不佳的导电性限制了其在热电池中的应用。在本研究中,利用液相混合-低温煅烧工艺制备了亚铜离子掺杂的氯化镍(NiCl_(2)-Cu_(x))。其中NiCl_(2)-Cu5具备最佳的电化学性能,与NiCl_(2)相比,NiCl_(2)-Cu5展现出高电压、高比能量优势,尤其是在500 mA cm-2电流密度下,NiCl_(2)-Cu5展现出724 Wh kg-1的高比能量,相比于NiCl_(2)约提升了82%。脉冲测试证明,NiCl_(2)-Cu5正极材料具备更低的内阻,能够缓解放电过程中的欧姆极化,实现高比能量输出。这项工作为高性能热电池正极材料的开发提供了一种新的思路。展开更多
The effects of the diameter of high-voltage electrode wire, the voltage of discharge, the structure of reactor and the total flow rate of H2-O2 feed on the direct synthesis of hydrogen peroxide in ambient conditions b...The effects of the diameter of high-voltage electrode wire, the voltage of discharge, the structure of reactor and the total flow rate of H2-O2 feed on the direct synthesis of hydrogen peroxide in ambient conditions by the dielectric barrier discharge （DBD） plasma method were studied.The results showed that the diameter of high-voltage electrode wire, the voltage of discharge and the structure of reactor had pronounced effects on H2O2 synthesis. By using a self-designed DBD plasma reactor （recycled flowing electrolyte as grounding electrode）, H2O2 was synthesized with 32.51% yield at room temperature and atmospheric pressure from H2-O2 feed, which was several times higher than that reported in literature.展开更多
The kinetic effects of neutral salt（KCl） on the reaction between acetone and iodine have been studied by means of the spectrophotomenter method.It was found that the reaction rate constant was increased with the inc...The kinetic effects of neutral salt（KCl） on the reaction between acetone and iodine have been studied by means of the spectrophotomenter method.It was found that the reaction rate constant was increased with the increasing of the ionic strength and the positive salt effect was observed when the ionic strength was lower than 2.1 mol·dm-3.A preliminary explanation of this phenomenon was proposed,and the effects of the ionic strength on spparent actovation energy（Ea）,apparent preexponential factor（A）,enthalpy of actlvation（Hm） and entropy of activation（Sm） were discussed.The related quantitative equations were established.展开更多
文摘氯化镍(NiCl_(2))作为一种高电位热电池正极材料,自身不佳的导电性限制了其在热电池中的应用。在本研究中,利用液相混合-低温煅烧工艺制备了亚铜离子掺杂的氯化镍(NiCl_(2)-Cu_(x))。其中NiCl_(2)-Cu5具备最佳的电化学性能,与NiCl_(2)相比,NiCl_(2)-Cu5展现出高电压、高比能量优势,尤其是在500 mA cm-2电流密度下,NiCl_(2)-Cu5展现出724 Wh kg-1的高比能量,相比于NiCl_(2)约提升了82%。脉冲测试证明,NiCl_(2)-Cu5正极材料具备更低的内阻,能够缓解放电过程中的欧姆极化,实现高比能量输出。这项工作为高性能热电池正极材料的开发提供了一种新的思路。
文摘The effects of the diameter of high-voltage electrode wire, the voltage of discharge, the structure of reactor and the total flow rate of H2-O2 feed on the direct synthesis of hydrogen peroxide in ambient conditions by the dielectric barrier discharge （DBD） plasma method were studied.The results showed that the diameter of high-voltage electrode wire, the voltage of discharge and the structure of reactor had pronounced effects on H2O2 synthesis. By using a self-designed DBD plasma reactor （recycled flowing electrolyte as grounding electrode）, H2O2 was synthesized with 32.51% yield at room temperature and atmospheric pressure from H2-O2 feed, which was several times higher than that reported in literature.
文摘The kinetic effects of neutral salt（KCl） on the reaction between acetone and iodine have been studied by means of the spectrophotomenter method.It was found that the reaction rate constant was increased with the increasing of the ionic strength and the positive salt effect was observed when the ionic strength was lower than 2.1 mol·dm-3.A preliminary explanation of this phenomenon was proposed,and the effects of the ionic strength on spparent actovation energy（Ea）,apparent preexponential factor（A）,enthalpy of actlvation（Hm） and entropy of activation（Sm） were discussed.The related quantitative equations were established.
