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  • Solid electrolytes have attracted much attention due to their great prospects
    in a number of energy- and environment-related applications including fuel
    cells. Fast ion transport and superior mechanical properties of solid electrolytes
    are both of critical significance for these devices to operate with high
    efficiency and long-term stability. To address a common tradeoff relationship
    between ionic conductivity and mechanical properties, electrolyte membranes
    with proton-conducting 2D channels and nacre-inspired architecture
    are reported. An unprecedented combination of high proton conductivity
    (326 mS cm?1 at 80 °C) and superior mechanical properties (tensile strength
    of 250 MPa) are achieved due to the integration of exceptionally continuous
    2D channels and nacre-inspired brick-and-mortar architecture into one materials
    system. Moreover, the membrane exhibits higher power density than
    Nafion 212 membrane, but with a comparative weight of only ≈0.1, indicating
    potential savings in system weight and cost. Considering the extraordinary
    properties and independent tunability of ion conduction and mechanical
    properties, this bioinspired approach may pave the way for the design of nextgeneration
    high-performance solid electrolytes with nacre-like architecture.


    Guangwei He,Mingzhao Xu,Jing Zhao,Shengtao Jiang,Shaofei Wang,Zhen Li,Xueyi He,Tong Huang,Moyuan Cao,Hong Wu,Michael D.Guiver and Zhongyi Jiang.


    Advanced Materials,29:28,1605898(2017)