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用于高性能储能器件的银修饰且石墨烯包覆的聚吡咯@Ni(OH) 四元纳米复合材料

Silver Decorated and Graphene Wrapped Polypyrrole@Ni(OH) Quaternary Nanocomposite for High Performance Energy Storage Devices.

作者信息

Jafer Rashida, Alsufyani Sarah A, Iqbal Javed, Ansari Mohammad Omaish, Numan Arshid, Bashir Shahid, Hasan P M Z, Wageh S

机构信息

Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia.

Center of Nanotechnology, King Abdulaziz University, Jeddah 21589, Saudi Arabia.

出版信息

Polymers (Basel). 2023 Mar 2;15(5):1267. doi: 10.3390/polym15051267.

DOI:10.3390/polym15051267
PMID:36904508
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10007114/
Abstract

In this work, silver (Ag) anchored over graphene (GN) wrapped polypyrrole (PPy)@ nickel hydroxide (Ni(OH)) nanocomposites were synthesized through a combination of oxidative polymerization and hydrothermal processes. The synthesized Ag/GN@PPy-Ni(OH) nanocomposites were characterized for their morphological characteristics by field emission scanning electron microscopy (FESEM), while the structural investigations were done by X-ray diffraction and X-ray photoelectron spectroscopy (XPS). The FESEM studies showed Ni(OH) flakes and silver particles attached over the surface of PPy globules, along with the presence of GN sheets and spherical silver particles. The structural analysis also showed the presence of constituents, i.e., Ag, Ni(OH), PPy, GN, and their interaction, therefore vouching that the synthesis protocol is efficacious. The electrochemical (EC) investigations were done in potassium hydroxide (1 M KOH) using a three electrode setup. The quaternary Ag/GN@PPy-Ni(OH) nanocomposite electrode showed the highest specific capacity of 237.25 C g. The highest electrochemical performance of the quaternary nanocomposite is associated with the synergistic/additional effect of PPy, Ni(OH), GN, and Ag. The assembled supercapattery with Ag/GN@PPy-Ni(OH) as a positive and activated carbon (AC) as a negative electrode displayed eminent energy density of 43.26 Wh kg with the associated power density of 750.00 W kg at a current density of 1.0 A g. The cyclic stability of the supercapattery (Ag/GN@PPy-Ni(OH)//AC), comprising a battery-type electrode, displayed a high cyclic stability of 108.37% after 5500 cycles.

摘要

在本工作中，通过氧化聚合和水热过程相结合的方法合成了银（Ag）锚定在石墨烯（GN）包裹的聚吡咯（PPy）@氢氧化镍（Ni(OH)）纳米复合材料。通过场发射扫描电子显微镜（FESEM）对合成的Ag/GN@PPy-Ni(OH)纳米复合材料的形态特征进行了表征，同时通过X射线衍射和X射线光电子能谱（XPS）进行了结构研究。FESEM研究表明，Ni(OH)薄片和银颗粒附着在PPy球粒表面，同时存在GN片层和球形银颗粒。结构分析还表明存在各成分，即Ag、Ni(OH)、PPy、GN及其相互作用，因此证明了合成方案是有效的。电化学（EC）研究在氢氧化钾（1 M KOH）中使用三电极装置进行。四元Ag/GN@PPy-Ni(OH)纳米复合电极显示出最高比容量为237.25 C/g。四元纳米复合材料的最高电化学性能与PPy、Ni(OH)、GN和Ag的协同/附加效应有关。以Ag/GN@PPy-Ni(OH)为正极、活性炭（AC）为负极组装的超级电容器在电流密度为1.0 A/g时显示出43.26 Wh/kg的卓越能量密度和750.00 W/kg的相关功率密度。由电池型电极组成的超级电容器（Ag/GN@PPy-Ni(OH)//AC）的循环稳定性在5500次循环后显示出108.37%的高循环稳定性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/45d8abf2a71f/polymers-15-01267-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/cf853fe44c9d/polymers-15-01267-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/fde78be0772f/polymers-15-01267-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/e72985e24c5c/polymers-15-01267-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/292c55ca3ada/polymers-15-01267-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/0d7d77b64d2a/polymers-15-01267-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/ad8b33cea1e5/polymers-15-01267-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/d28bf85a655b/polymers-15-01267-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/b6e502fc3747/polymers-15-01267-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/45d8abf2a71f/polymers-15-01267-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/cf853fe44c9d/polymers-15-01267-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/fde78be0772f/polymers-15-01267-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/e72985e24c5c/polymers-15-01267-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/292c55ca3ada/polymers-15-01267-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/0d7d77b64d2a/polymers-15-01267-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/ad8b33cea1e5/polymers-15-01267-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/d28bf85a655b/polymers-15-01267-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/b6e502fc3747/polymers-15-01267-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59d1/10007114/45d8abf2a71f/polymers-15-01267-g009.jpg

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