Au@MnO2 Core-Shell Nanomesh Electrodes for Transparent Flexible Supercapacitors

作者：Qiu, Tengfei; Luo, Bin; Giersig, Michael; Akinoglu, Eser Metin; Hao, Long; Wang, Xiangjun; Shi, Lin; Jin, Meihua; Zhi, Linjie^*

来源：Small, 2014, 10(20): 4136-4141.

DOI：10.1002/smll.201401250

• transparent flexible supercapacitors
• MnO2
• Au nanomeshes
• core-shell
• nanosphere lithography

A novel Au@MnO 2 core-shell nanomesh structure on a flexible polymeric substrate through nanosphere lithography combined with electro-deposition processing was investigated. The Au nanomesh film was obtained using a monolayer of close-packed periodic hexagonal polystyrene (PS) particles as a template. First, the PS particles were self-assembled on the water surface and deposited onto a PET substrate and the substrate was dried in air. Next, oxygen reactive-ion etching (RIE) was applied at 60 W in flowing 30 sccm O 2 for 70 s to reduce the size of PS particles. Subsequently, an Au thin film with a thickness of 50 nm was evaporated onto the substrate. The morphology, microstructure and composition of the samples were investigated by FE-SEM. The efficient contact between the Au current collector and the MnO 2 nanosheets provides significantly enhanced electrochemical properties including high areal/gravimetric capacitance and excellent rate capability for transparent flexible supercapacitors (TFSCs).

• 出版日期2014-10-29
• 单位国家纳米科学中心