材料科学
介孔材料
电解质
锂(药物)
膜
聚合物
阳极
氧化物
钠
环氧乙烷
电化学
化学工程
纳米颗粒
纳米技术
无机化学
电极
复合材料
有机化学
共聚物
催化作用
冶金
化学
物理化学
内分泌学
工程类
医学
生物化学
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 Al 2 O 3 . All‐solid‐state Li/LiFePO 4 and Na/NaTi 2 (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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