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Nacre-like laminate nitrogen-doped porous carbon/carbon nanotubes/graphene composite for excellent comprehensive performance supercapacitors†
Nanoscale ( IF 5.8 ) Pub Date : 2018-07-16 00:00:00 , DOI: 10.1039/c8nr02439a Zeyu Chen 1, 2, 3, 4 , Siqi Zhao 1, 2, 3, 4 , Yang Zhou 1, 2, 3, 4 , Chuying Yu 1, 2, 3, 4 , Wenbin Zhong 1, 2, 3, 4 , Wantai Yang 4, 5, 6, 7
Nanoscale ( IF 5.8 ) Pub Date : 2018-07-16 00:00:00 , DOI: 10.1039/c8nr02439a Zeyu Chen 1, 2, 3, 4 , Siqi Zhao 1, 2, 3, 4 , Yang Zhou 1, 2, 3, 4 , Chuying Yu 1, 2, 3, 4 , Wenbin Zhong 1, 2, 3, 4 , Wantai Yang 4, 5, 6, 7
Affiliation
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A nitrogen-doped porous carbon/carbon nanotubes/graphene (PGMC) composite was prepared through a process of hydrothermal treatments, polymerization of o-phenylenediamine (OPD), and pyrolysis. The as-prepared PGMC composite was found to be of a nacre-like laminate porous structure, constructed with alternatively stacked two-dimensional (2D) graphene sheets and porous carbons, and also interspersed within one-dimensional (1D) multi-walled carbon nanotubes (MWNTs). The MWNTs effectively suppressed agglomeration of graphene sheets during the hydrothermal process and were interspersed in PGMC to help construct more networks with excellent conductivity. The PGMC possessed an enriched nitrogen doping ratio of 15.67 at% and relative high density of 1.39 g cm−3. The electrode composed of PGMC provided high gravimetric capacitance of 562.9 F g−1 and volumetric capacitance of 782.4 F cm−3 at current density of 1 A g−1, as well as excellent rate capability and cycling stability. The symmetric supercapacitors mounted with the as-prepared PGMC electrode were stably operated in a wide potential range of 0–1.3 V and demonstrated a superb gravimetric energy density of 19.79 W h kg−1 at high power density of 650 W kg−1, and a high volumetric energy density of 27.51 W h L−1 with a power density of 904 W L−1. The outstanding electrochemical performance enables this as-prepared nacre-like laminate PGMC composite to be a promising candidate for energy storage application.
中文翻译：
珍珠母状层压板，氮掺杂的多孔碳/碳纳米管/石墨烯复合材料，具有出色的综合性能超级电容器†
通过水热处理，邻苯二胺（OPD）聚合和热解工艺制备了氮掺杂的多孔碳/碳纳米管/石墨烯（PGMC）复合材料。发现所制备的PGMC复合材料具有珍珠层状的层压多孔结构，由交替堆叠的二维（2D）石墨烯片和多孔碳构成，并且散布在一维（1D）的多壁碳纳米管中（MWNT）。MWNTs在水热过程中有效地抑制了石墨烯片的团聚，并散布在PGMC中，以帮助构建更多具有优异电导率的网络。PGMC具有15.67 at％的富氮掺杂比和1.39 g cm -3的相对高密度。由PGMC组成的电极在1 A g -1的电流密度下提供了562.9 F g -1的高重力电容和782.4 F cm -3的体积电容，以及出色的倍率性能和循环稳定性。对称超电容器安装有作为制备PGMC电极是在0-1.3 V的宽电位范围稳定地工作和表现出19.79 W时公斤的一个极好的重量能量密度-1在650高功率密度钨千克-1，和高体积能量密度为27.51 W h L -1，功率密度为904 WL -1。出色的电化学性能使这种制备的珍珠质层状PGMC复合材料成为储能应用的有希望的候选者。
更新日期：2018-07-16
中文翻译：
珍珠母状层压板，氮掺杂的多孔碳/碳纳米管/石墨烯复合材料，具有出色的综合性能超级电容器†
通过水热处理，邻苯二胺（OPD）聚合和热解工艺制备了氮掺杂的多孔碳/碳纳米管/石墨烯（PGMC）复合材料。发现所制备的PGMC复合材料具有珍珠层状的层压多孔结构，由交替堆叠的二维（2D）石墨烯片和多孔碳构成，并且散布在一维（1D）的多壁碳纳米管中（MWNT）。MWNTs在水热过程中有效地抑制了石墨烯片的团聚，并散布在PGMC中，以帮助构建更多具有优异电导率的网络。PGMC具有15.67 at％的富氮掺杂比和1.39 g cm -3的相对高密度。由PGMC组成的电极在1 A g -1的电流密度下提供了562.9 F g -1的高重力电容和782.4 F cm -3的体积电容，以及出色的倍率性能和循环稳定性。对称超电容器安装有作为制备PGMC电极是在0-1.3 V的宽电位范围稳定地工作和表现出19.79 W时公斤的一个极好的重量能量密度-1在650高功率密度钨千克-1，和高体积能量密度为27.51 W h L -1，功率密度为904 WL -1。出色的电化学性能使这种制备的珍珠质层状PGMC复合材料成为储能应用的有希望的候选者。
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