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3篇 您的检索式:作者名="Benjamin Papandrea"
    题名 作者 年代 出处 被引量
1Three-dimensional graphene framework with ultra-high sulfur content for a robust lithium-sulfur battery显示文摘Benjamin Papandrea Xu Xu Yuxi Xu Chih-Yen Chen Zhaoyang Lin Gongming Wang Yanzhu Luo Matthew Liu yu Huang Liqiang Mai Xiangfeng Duan 2016Nano Research2016,9,1:13
2Three-dimensional graphene membrane cathode for high energy density rechargeable lithium-air batteries in ambient conditions显示文摘锂空气电池在活动电源供应的高精力密度为应用吸引了重要兴趣,还对有在周围的条件下面的稳定的骑车性能的可充电的 Li 空气电池的发展有可观的挑战。这里,我们报导一三维(3D ) 恐水病的 graphene 膜作为为高效 Li 空气电池的潮湿抵抗的阴极。 3D graphene 膜为有效电荷运输展示一个高度互连的 graphene 网络,为氧和电解质离子的有效散开的高度多孔的结构,为绝缘的分泌物产品的高能力存储的一个大特定的表面区域,并且为 O 2/H2 O 选择。当延迟时,这些隧道便于 O 2 ingression 潮湿散开并且保证优秀控告 / 解除骑车在周围的条件下面的稳定性。膜能因此与非凡的性能启用柔韧的 Li 空气电池,包括超过 5,700 mAh/g 的一个最大的阴极能力并且优秀再装骑车行为(> 在 140 mAh/g 的 2,000 个周期,并且 > 在 1,400 mAh/g 的 100 个周期) 。graphene 膜空气阴极能交付 100,000-300,000 mAh/g 的一个一生能力,比得上典型的锂离子电池阴极的。有显著地改进的单个费用能力和 Li 离子电池的比得上那些的一生能力的 Li 空气电池的稳定的操作可以为为未来其他的吸引人的高精力密度存储提供活动电源供应。这些电池可以提供长得多的电池生活并且极大地减少再装频率。Xing Zhong Benjamin Papandrea Yuxi Xu Zhaoyang Lin Hua Zhang Yuan Liu Yu Huang Xiangfeng Duan 2017Nano Research2017,10,2:4
3Reduced graphene oxide/silicon nanowire hetero- structures with enhanced photoactivity and superior photoelectrochemical stability显示文摘Silicon nanowires (SiNWs) have been widely studied as light harvesting antennas in photocatalysts due to their ability to absorb broad-spectrum solar radiation, but they are typically limited by poor photoelectrochemical stability. Here, we report the synthesis of reduced graphene oxide-SiNW (rGO-SiNW) heterostructures to achieve greatly improved photocatalytic activity and stability. The SiNWs were synthesized through a metal-assisted electroless etching process and functionalized with reduced graphene oxide (rGO) flakes through a chemical absorption process. Here, the rGO not only functions as a physical protection layer to isolate the SiNWs from the harsh electrochemical environment but also serves as a charge mediator to facilitate the charge separation and transport processes. Furthermore, the rGO may also function as a redox catalyst to ensure efficient utilization of photo-carriers for the desired chemical reactions. Photocatalytic dye degradation studies show that the photoactivity of the heterostructures can be significantly enhanced with an initial activation process and maintained without apparent decay over repeated reaction cycles. Electrochemical and photo- electrochemical studies indicate that the enhanced photoactivity and photostability can be attributed to the more efficient separation of photoexcited charge carriers in SiNWs and the reduced self-oxidation of the surface of the SiNWs during the photocatalytic dye degradation process. The ability to significantly improve the photocatalytic activity and stability in rGO-SiNW heterostructures can not only lead to more opportunities for the application of silicon-based photocatalysts/ photoelectrodes for solar energy harvesting but also provide new insights into the stabilization of other unstable photocatalyticXing Zhong Gongming wang Benjamin Papandrea Mufan Li Yuxi Xu Yu Chen Chih-Yen Chen Hailong Zhou Teng Xue Yongjia Li Dehui Li Yu Huang Xiangfeng Duan 2015Nano Research2015,8,9:4
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