柔性不对称固态超级电容器的SILAR方法在还原氧化石墨烯板上合成层...

来自 : www.x-mol.com/paper/1361808313 发布时间：2021-03-24

Along with growing use of electrochemical energy storage systems, there is a requirement for investigating electrode materials which assure applications in portable and wearable electrical energy storage devices. In this study, facile successive ionic layer adsorption and reaction (SILAR) method was employed to composite CuSe2 with reduced graphene oxide (rGO). The X-ray diffraction study showed orientation of CuSe2 nanoparticles from (200) to (221) plane with rGO composition. The field emission-scanning electron microscope images showed that CuSe2 nanoparticles are uniformly anchored onto the surface of rGO sheets. The composite CuSe2@rGO material offered a higher specific surface area (84 m2 g−1) compared to CuSe2 (24 m2 g−1) with the specific capacitance (Cs) of 612 F g−1 at a scan rate of 2 mV s−1. Moreover, the flexible solid-state asymmetric supercapacitor (ASC) fabricated with configuration CuSe2@rGO/PVA-KOH/CuS exhibited specific energy of 28.3 Wh kg−1 at the specific power of 1538 W kg−1. The device retained about 89% of the initial Cs at a bending angle of 165°. For practical manifestation, two series connected ASC devices charged with 2.8 V delivered 19.6 mW cm−2 of initial power and illuminated LED panel made of 211 red LED’s for 150 s

2021年3月5日在本研究中,采用简便的连续离子层吸附和反应(SILAR)方法将还原型氧化石墨烯(rGO)合成CuSe 2。X射线衍射研究表明CuSe 2纳米粒子的取向从(200)到(221)具...柔性不对称固态超级电容器的SILAR方法在还原氧化石墨烯片上合成层状硒化铜; D.B. Malavekar, R.N. Bulakhe, S.B. Kale, U.M. Patil, Insik In, C.D. Lokhande; J. Alloys Compd.; Journal of Alloys and Compounds; X-MOL随着电化学能量存储系统的日益使用，需要研究确保在便携式和可穿戴电能存储设备中的应用的电极材料。在本研究中，采用简便的连续离子层吸附和反应（SILAR）方法将还原型氧化石墨烯（rGO）合成CuSe 2。X射线衍射研究表明CuSe 2纳米粒子的取向从（200）到（221）具有rGO组成。场发射扫描电子显微镜图像显示，CuSe 2纳米颗粒均匀地锚固在rGO片的表面上。CuSe 2 @rGO复合材料具有更高的比表面积（84 m 2 g-1）相比的CuSe 2（24米2克-1）与特定的电容（C ^小号的612 F G）-1以2毫伏s的扫描速率-1。此外，以CuSe 2 @ rGO / PVA-KOH / CuS构型制造的柔性固态不对称超级电容器（ASC）在1538 W kg -1的比功率下显示出28.3 Wh kg -1的比能。该装置保持大约的初始89％Ç小号在165°的弯曲角度。为了实际表现，两个串联的ASC器件在2.8 V电压下充电时输出的功率为19.6 mW cm -2 的初始功率和由211个红色LED制成的发光LED面板持续150 s柔性不对称固态超级电容器的SILAR方法在还原氧化石墨烯片上合成层状硒化铜,Journal of Alloys and Compounds