采用改进Stober法-化学沉淀法制备了Ni(OH)_(2)/氮掺杂空心碳球复合材料(Ni(OH)_(2)/NHCS)。通过X射线衍射(XRD)、透射电镜(TEM)和N 2吸附-脱附等手段对复合材料进行表征和分析,并采用电化学工作站对复合材料的电化学性能进行测试。研...采用改进Stober法-化学沉淀法制备了Ni(OH)_(2)/氮掺杂空心碳球复合材料(Ni(OH)_(2)/NHCS)。通过X射线衍射(XRD)、透射电镜(TEM)和N 2吸附-脱附等手段对复合材料进行表征和分析,并采用电化学工作站对复合材料的电化学性能进行测试。研究结果表明:相比于纯Ni(OH)_(2)而言,NHCS有效抑制了Ni(OH)_(2)的聚集,从而提高了活性材料的利用率。同时,复合材料的中空结构有利于电解质离子的渗入而缩短电解质离子的传输路径,且降低界面电阻,从而有效提高了复合材料Ni(OH)_(2)/NHCS的电化学性能。Ni(OH)_(2)/NHCS在2 M KOH电解质中,电流密度为0.5 A g^(-1)时可表现出1085 F g^(-1)的高比电容。展开更多
With the greatly increasing amount of discarded hydroxyl-terminated polybutadiene(HTPB)propellant year by year,it is of high significance to study the safe,efficient and environmental processing method of disposal HTP...With the greatly increasing amount of discarded hydroxyl-terminated polybutadiene(HTPB)propellant year by year,it is of high significance to study the safe,efficient and environmental processing method of disposal HTPB propellant.In this paper,the decomposition agents are formulated for degrading the waste composite solid propellant.It is found that the following formulations of butanone 25%-55%,xylene 30%-75%,deionized water 40%-45%have effective influence on the degradation of the waste composite solid propellant.The proper degradation time is found to be about 7-8 h.With the help of infrared spectrum analysis,scanning electron microscope imaging,thermogravimetric analysis and solvent viscosity test,it was proved that after degradation reaction on the propellant sometimes,a large number of irregular fractures occurred in bulk resulting from effective degradation.The characterization of the propellant after degradation showed that the hardness of the propellant decreased,the viscosity increased,and a large number of holes and cracks appeared on the surface.The results showed that the formulated degradation agent and degradation condition perform good degradation effects on HTPB solid propellant.展开更多
文摘采用改进Stober法-化学沉淀法制备了Ni(OH)_(2)/氮掺杂空心碳球复合材料(Ni(OH)_(2)/NHCS)。通过X射线衍射(XRD)、透射电镜(TEM)和N 2吸附-脱附等手段对复合材料进行表征和分析,并采用电化学工作站对复合材料的电化学性能进行测试。研究结果表明:相比于纯Ni(OH)_(2)而言,NHCS有效抑制了Ni(OH)_(2)的聚集,从而提高了活性材料的利用率。同时,复合材料的中空结构有利于电解质离子的渗入而缩短电解质离子的传输路径,且降低界面电阻,从而有效提高了复合材料Ni(OH)_(2)/NHCS的电化学性能。Ni(OH)_(2)/NHCS在2 M KOH电解质中,电流密度为0.5 A g^(-1)时可表现出1085 F g^(-1)的高比电容。
基金Supported by the National Natural Science Foundation of China(21706199)。
文摘With the greatly increasing amount of discarded hydroxyl-terminated polybutadiene(HTPB)propellant year by year,it is of high significance to study the safe,efficient and environmental processing method of disposal HTPB propellant.In this paper,the decomposition agents are formulated for degrading the waste composite solid propellant.It is found that the following formulations of butanone 25%-55%,xylene 30%-75%,deionized water 40%-45%have effective influence on the degradation of the waste composite solid propellant.The proper degradation time is found to be about 7-8 h.With the help of infrared spectrum analysis,scanning electron microscope imaging,thermogravimetric analysis and solvent viscosity test,it was proved that after degradation reaction on the propellant sometimes,a large number of irregular fractures occurred in bulk resulting from effective degradation.The characterization of the propellant after degradation showed that the hardness of the propellant decreased,the viscosity increased,and a large number of holes and cracks appeared on the surface.The results showed that the formulated degradation agent and degradation condition perform good degradation effects on HTPB solid propellant.
