Advanced Functional Materials

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  1. Elemental Ferroelectricity and Antiferroelectricity in Group-V Monolayer

    Chengcheng Xiao, Fang Wang, Shengyuan A. Yang, Yunhao Lu, Yuanping Feng and Shengbai Zhang

    Version of Record online: 23 FEB 2018 | DOI: 10.1002/adfm.201707383

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    Robust ferroelectricity is predicted in 2D elemental group-V (As, Sb, and Bi) monolayers with the puckered lattice structure similar to phosphorene. Interestingly, for Bi monolayer, a metastable antiferroelectric phase is also found. The revealed phase-change mechanism for such elemental monolayer takes to deeply understand the effect of s-p hybridization on stability and distortion of 2D system.

  2. Transparent, Anisotropic Biofilm with Aligned Bacterial Cellulose Nanofibers

    Sha Wang, Tian Li, Chaoji Chen, Weiqing Kong, Shuze Zhu, Jiaqi Dai, Alfredo J. Diaz, Emily Hitz, Santiago D. Solares, Teng Li and Liangbing Hu

    Version of Record online: 23 FEB 2018 | DOI: 10.1002/adfm.201707491

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    A transparent and anisotropic cellulose biofilm from bacteria cellulose (BC) is constructed via a well-developed stretching process. The hierarchical alignment of high quality cellulose fibrils renders the biofilm ultrastrong and ultratough. With tailored nanoscale and microscale morphology of stretched BC paper, the optical properties can be dramatically modulated with well-controlled anisotropic transmission patterns, enabling new photonic applications.

  3. Direct Growth of Edge-Rich Graphene with Tunable Dielectric Properties in Porous Si3N4 Ceramic for Broadband High-Performance Microwave Absorption

    Fang Ye, Qiang Song, Zhenchuang Zhang, Wei Li, Shouyang Zhang, Xiaowei Yin, Yuzhao Zhou, Huiwen Tao, Yongsheng Liu, Laifei Cheng, Litong Zhang and Hejun Li

    Version of Record online: 23 FEB 2018 | DOI: 10.1002/adfm.201707205

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    Edge-rich graphene (ERG) with tunable dielectric properties has been grown in porous Si3N4 ceramic by a simple chemical vapor deposition method using methyl alcohol as precursor. ERG/Si3N4 hybrids exhibit superior electromagnetic wave absorption, due to the unique structure of ERG and the resulted good impedance matching.

  4. Fabrication of Nickel–Cobalt Bimetal Phosphide Nanocages for Enhanced Oxygen Evolution Catalysis

    Bocheng Qiu, Lejuan Cai, Yang Wang, Ziyuan Lin, Yunpeng Zuo, Mengye Wang and Yang Chai

    Version of Record online: 23 FEB 2018 | DOI: 10.1002/adfm.201706008

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    Ni–Co bimetal phosphide nanocages as highly efficient and robust electrocatalysts are synthesized by using Cu2O nanocubes templates. Through accurate regulation of Co doping concentration, the optimum oxygen evolution reaction performance can be achieved. Theoretical analysis suggests that the Co incorporation into Ni2P effectively optimizes the electronic structures of bimetal phosphide catalysts and enhances their interaction with reactants.

  5. Addressing Passivation in Lithium–Sulfur Battery Under Lean Electrolyte Condition

    Huilin Pan, Kee Sung Han, Mark H. Engelhard, Ruiguo Cao, Junzheng Chen, Ji-Guang Zhang, Karl T. Mueller, Yuyan Shao and Jun Liu

    Version of Record online: 23 FEB 2018 | DOI: 10.1002/adfm.201707234

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    Addressing the passivation issue of insulating Li2S is extremely critical to extend the cycle life of lithium–sulfur batteries, especially under the lean electrolyte condition. An electrolyte additive promoting the dissociation of Li2S is an effective solution to prevent the uncontrollable accumulation of Li2S, leading to an active S cathode interface and homogeneous Li metal deposition morphology.