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  1. Protected Lithium-Metal Anodes in Batteries: From Liquid to Solid

    Chunpeng Yang, Kun Fu, Ying Zhang, Emily Hitz and Liangbing Hu

    Version of Record online: 24 JUL 2017 | DOI: 10.1002/adma.201701169

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    Lithium-metal batteries are promising candidates for high-energy and cost-effective energy-storage systems. Solving the dendritic problem and interfacial instability of the Li-metal anodes is a prerequisite to their practical utilization. Strategies to protect Li-metal anodes in liquid and solid-state electrolytes, which will facilitate the development safe and high-performance Li-metal batteries, are reviewed.

  2. Vacancy-Driven Gelation Using Defect-Rich Nanoassemblies of 2D Transition Metal Dichalcogenides and Polymeric Binder for Biomedical Applications

    Manish K. Jaiswal, James K. Carrow, James L. Gentry, Jagriti Gupta, Nara Altangerel, Marlan Scully and Akhilesh K. Gaharwar

    Version of Record online: 24 JUL 2017 | DOI: 10.1002/adma.201702037

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    A new approach of vacancy-driven gelation to obtain chemically crosslinked hydrogels from defect-rich nanoassemblies of 2D transition metal dichalcogenides and polymeric binder is presented. The approach utilizes planar and edge atomic defects available on the surface of 2D MoS2 to form a chemically reinforced mechanically resilient nanocomposite network. Mechanically stiff and elastomeric nanocomposites hydrogels can be used to encapsulate cells for biomedical applications.

  3. Direct Observation of Inherent Atomic-Scale Defect Disorders responsible for High-Performance Ti1−xHfxNiSn1−ySby Half-Heusler Thermoelectric Alloys

    Ki Sung Kim, Young-Min Kim, Hyeona Mun, Jisoo Kim, Jucheol Park, Albina Y. Borisevich, Kyu Hyoung Lee and Sung Wng Kim

    Version of Record online: 24 JUL 2017 | DOI: 10.1002/adma.201702091

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    Disordered defects at all atomic sites induce a local composition fluctuation, effectively scattering phonons and improving power factors. Direct observation of atomic-scale defect disorders clarifies an enhancement of thermoelectric performance originating from a significant reduction of thermal conductivity in half-Heulser alloys. The collective atomic-scale defect disorder improves the zT to 1.09 ± 0.12 at 800 K for the Ti0.5Hf0.5NiSn0.98Sb0.02 alloy.

  4. Multicellular Vascularized Engineered Tissues through User-Programmable Biomaterial Photodegradation

    Christopher K. Arakawa, Barry A. Badeau, Ying Zheng and Cole A. DeForest

    Version of Record online: 24 JUL 2017 | DOI: 10.1002/adma.201703156

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    A photodegradable material-based approach to generate endothelialized 3D vascular networks within cell-laden hydrogel biomaterials is introduced. Exploiting multiphoton lithography, microchannel networks spanning size scales of nearly all native human vasculature are readily generated with unprecedented user-defined 4D control. Intraluminal channel architectures of synthetic vessels are fully customizable, providing new opportunities for next-generation microfluidics and directed cell function.

  5. Promising Thermoelectric Bulk Materials with 2D Structures

    Yiming Zhou and Li-Dong Zhao

    Version of Record online: 24 JUL 2017 | DOI: 10.1002/adma.201702676

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    Thermoelectric bulk materials with 2D structures possess natural structures similar to artificial superlattices, hence enabling the utilization of enhancement methods for superlattices. General optimization methods for Bi2Te3 are reviewed; meanwhile, the progress of advanced research into SnSe and BiCuSeO as promising thermoelectric materials is summarized.