Advanced Functional Materials

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  1. Enhancing Ion Migration in Grain Boundaries of Hybrid Organic–Inorganic Perovskites by Chlorine

    Bin Yang, Chance C. Brown, Jingsong Huang, Liam Collins, Xiahan Sang, Raymond R. Unocic, Stephen Jesse, Sergei V. Kalinin, Alex Belianinov, Jacek Jakowski, David B. Geohegan, Bobby G. Sumpter, Kai Xiao and Olga S. Ovchinnikova

    Version of Record online: 26 MAY 2017 | DOI: 10.1002/adfm.201700749

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    By combining a novel, open-loop, band-excitation, contact Kelvin probe force microscopy, in conjunction with ab initio molecular dynamics simulations, it is demonstrated that ion migration can be significantly enhanced by introducing additional mobile chloride ions into grain boundaries of CH3NH3PbI3 perovskite films. This may serve as the first step toward the development of high-performance electrically and optically tunable memristors and synaptic devices.

  2. High Electroactive Material Loading on a Carbon Nanotube@3D Graphene Aerogel for High-Performance Flexible All-Solid-State Asymmetric Supercapacitors

    Zhenghui Pan, Meinan Liu, Jie Yang, Yongcai Qiu, Wanfei Li, Yan Xu, Xinyi Zhang and Yuegang Zhang

    Version of Record online: 26 MAY 2017 | DOI: 10.1002/adfm.201701122

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    A simple, scalable, and environmentally friendly method is described for preparing a novel carbon nanotube (CNT)@3D graphene aerogel (3DGA) that acts as an ideal support for high loading of electroactive materials. Lightweight and flexible all-solid-state asymmetric supercapacitors are assembled from the MnO2@CNTs@3DGA and polypyrrole@CNTs@3DGA electrodes. The devices realize high areal capacitance and superior mechanical strength and hold great promise for future flexible electronics.

  3. Conductive Metal–Organic Framework Nanowire Array Electrodes for High-Performance Solid-State Supercapacitors

    Wen-Hua Li, Kui Ding, Han-Rui Tian, Ming-Shui Yao, Bhaskar Nath, Wei-Hua Deng, Yaobing Wang and Gang Xu

    Version of Record online: 26 MAY 2017 | DOI: 10.1002/adfm.201702067

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    Conductive metal–organic framework (MOF) nanowire arrays (NWAs) are prepared as the sole electrode material for solid-state supercapacitors. By taking advantage of their nanostructure and making full use of the high porosity and excellent conductivity, the MOF NWAs in the solid-state supercapacitor show the highest areal capacitance and best rate performance of all reported MOF materials.

  4. A Ratiometric Near-Infrared Fluorescent Probe for Quantification and Evaluation of Selenocysteine-Protective Effects in Acute Inflammation

    Xiaoyue Han, Xinyu Song, Fabiao Yu and Lingxin Chen

    Version of Record online: 24 MAY 2017 | DOI: 10.1002/adfm.201700769

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    A ratiometric near-infrared fluorescent probe (Cy-SS) is developed for qualitative and quantitative detection of selenocysteine (Sec) in living cells and in vivo. The probe is used to target the liver and detect Sec concentrations in normal and acute hepatitis BALB/c mice models. Sec is critical to maintain the redox statues of the liver and protect liver from inflammatory injury.

  5. Phase and Composition Tuning of 1D Platinum-Nickel Nanostructures for Highly Efficient Electrocatalysis

    Kezhu Jiang, Qi Shao, Dandan Zhao, Lingzheng Bu, Jun Guo and Xiaoqing Huang

    Version of Record online: 24 MAY 2017 | DOI: 10.1002/adfm.201700830

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    Porous Pt3Ni nanowires (NWs) are obtained by selectively etching Pt-Ni NWs with phase and component control. Due to their unique structure of high index facets, highly open structure, 1D structure, and ultrathin Pt-rich surface, the resulting porous Pt3Ni NWs show extraordinary activity and stability toward the oxygen reduction reaction, suggesting that superior Pt-based catalysts can be developed by precisely tailoring.