材料科学
介孔材料
锂(药物)
聚合物
固态
钠
球体
化学工程
纳米技术
复合材料
工程物理
有机化学
催化作用
冶金
工程类
内分泌学
化学
物理
医学
天文
作者
Weidong Zhou,Hongcai Gao,John B. Goodenough
标识
DOI:10.1002/aenm.201501802
摘要
A practical, low-cost synthesis of hollow mesoporous organic polymer (HMOP) spheres is reported. The electrochemical properties of Li+/Na+-electrolyte membranes with these spheres substituting for oxide filler particles in poly(ethylene oxide) (PEO)-filler composite are explored. The electrolyte membranes are mechanically robust, thermally stable to over 250 °C, and block dendrites from a metallic-lithium/sodium anode. The Li+/Na+ transfer impedance across the lithium/sodium–electrolyte interface is initially acceptable at 65 °C and scavenging of impurities by the porous-spheres filler lowers this impedance relative to that with Al2O3. All-solid-state Li/LiFePO4 and Na/NaTi2(PO4)3 cells give stable discharge capacity of ≈130 and 80 mAh g−1, respectively, at 0.5 C and 65 °C for 100 cycles.
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