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Tunable Decoration of Reduced Graphene Oxide with Au Nanoparticles for the Oxygen Reduction Reaction 下载免费PDF全文
Sung‐Soo Kim Yang‐Rae Kim Taek Dong Chung Byeong‐Hyeok Sohn 《Advanced functional materials》2014,24(19):2764-2771
Reduced graphene oxide (rGO) films are decorated with non‐overlapping Au nanoparticles using diblock copolymer micelles that provide controllability over the number density as well as the diameter of the nanoparticles. This synthetic process produces a pure Au surface without extra layers. Furthermore, the rGO film enables the transferability of the Au nanoparticles without deterioration of their arrays. Thus, the controllability of the Au nanoparticles and their transferability with rGO films allow the effective modification of electrochemical electrodes. With a glassy carbon electrode modified with an rGO film with Au nanoparticles, high electrochemical activity is observed in the oxygen reduction reaction (ORR). Furthermore, it is possible to identify a size‐dependent ORR mechanism, showing that Au nanoparticles with an average diameter of 8.6 nm exhibit a 4‐electron direct reduction of O2 to H2O. 相似文献
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Electrocatalysts: Nitrogen‐Doped Nanoporous Carbon/Graphene Nano‐Sandwiches: Synthesis and Application for Efficient Oxygen Reduction (Adv. Funct. Mater. 36/2015) 下载免费PDF全文
Jing Wei Yaoxin Hu Yan Liang Biao Kong Jin Zhang Jingchao Song Qiaoliang Bao George P. Simon San Ping Jiang Huanting Wang 《Advanced functional materials》2015,25(36):5876-5876
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Electrochemistry: Development and Simulation of Sulfur‐doped Graphene Supported Platinum with Exemplary Stability and Activity Towards Oxygen Reduction (Adv. Funct. Mater. 27/2014) 下载免费PDF全文
Drew Higgins Md Ariful Hoque Min Ho Seo Rongyue Wang Fathy Hassan Ja‐Yeon Choi Mark Pritzker Aiping Yu Jiujun Zhang Zhongwei Chen 《Advanced functional materials》2014,24(27):4324-4324
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Graphene Oxide: Ultrafast Fabrication of Covalently Cross‐linked Multifunctional Graphene Oxide Monoliths (Adv. Funct. Mater. 31/2014) 下载免费PDF全文
Wubo Wan Lingli Li Zongbin Zhao Han Hu Xiaojuan Hao David A. Winkler Lingcong Xi Timothy C. Hughes Jieshan Qiu 《Advanced functional materials》2014,24(31):4914-4914
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Graphene oxide (GO) films can be readily prepared at wafer scale, then reduced to form graphene-based conductive circuits relevant to a range of practical device applications. Among a variety of reduction methods, laser processing has emerged as an important technique for localized reduction and patterning of GO films. In this study, the novel use of confocal microscopy is demonstrated for high-resolution characterization, in situ laser reduction, and versatile patterning of GO films. Multi-modal imaging and real-time tracking are performed with 405 and 488 nm lasers, enabling large-area direct observation of the reduction progress. Using image analysis to cluster flake types, the different stages of reduction can be attributed to thermal transfer and accumulation. Delicate control of the reduction process over multiple length scales is illustrated using millimeter-scale stitched patterns, micropatterning of single flakes, and direct writing conductive 2D wires with sub-micrometer resolution (530 nm). The general applicability of the technique is shown, allowing fabrication of both conductive reduced graphene oxide (rGO) films (sheet resistance: 2.5 kOhm sq−1) and 3D microscale architectures. This simple and mask-free method provides a valuable tool for well-controlled and scalable fabrication of reduced GO structures using compact low-power lasers (< 5 mW), with simultaneous in situ monitoring and quality control. 相似文献
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Hybrid Supercapacitors: High‐Performance Sodium‐Ion Hybrid Supercapacitor Based on Nb2O5@Carbon Core–Shell Nanoparticles and Reduced Graphene Oxide Nanocomposites (Adv. Funct. Mater. 21/2016) 下载免费PDF全文
Eunho Lim Changshin Jo Min Su Kim Mok‐Hwa Kim Jinyoung Chun Haegyeom Kim Jongnam Park Kwang Chul Roh Kisuk Kang Songhun Yoon Jinwoo Lee 《Advanced functional materials》2016,26(21):3553-3553
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