High Performance and Biodegradable Skeleton Material Based on Soy Protein Isolate for Gel Polymer Electrolyte
High Performance and Biodegradable Skeleton Material Based on Soy Protein Isolate for Gel Polymer Electrolyte
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DOI：
10.1021/acssuschemeng.6b01218
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发表时间：
2016-08
影响因子：
8.4
通讯作者：
Ming Zhu;Chunyu Tan;Q. Fang;Liang Gao;G. Sui;Xiaoping Yang
中科院分区：
文献类型：
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作者：
Ming Zhu;Chunyu Tan;Q. Fang;Liang Gao;G. Sui;Xiaoping Yang
采用静电纺丝技术制备了一种来源丰富、可生物降解的大豆分离蛋白（SPI）/聚乙烯醇（PVA）复合膜，并将其作为锂离子电池凝胶聚合物电解质（GPE）的骨架材料。结果表明，合适的材料配比、较低的结晶度、足够的孔隙率以及纳米粒子与电极/电解质之间良好的亲和性，使得纳米粒子膜具有较高的饱和电解质吸收率和保存率。基于SPI/PVA复合膜的GPE具有优异的电化学性能，包括高的离子电导率、与锂电极良好的相容性和良好的电化学稳定性。当纺丝液中SPI与PVA的质量比为3：1时，GPEs的离子电导率为3.8 × 10-3 S cm-1，界面电阻为250 Ω，比现有的生物基GPEs有上级的提高。此外，还研究了以GPE为基础的Li/GPE/LiCoO 2电池。
A kind of biodegradable and well-sourced soy protein isolate (SPI)/poly(vinyl alcohol) (PVA) composite nanofiber membranes was fabricated via electrospinning and used as skeleton material in gel polymer electrolyte (GPE) of lithium-ion batteries. This study revealed that the proper material proportion, low crystallinity, sufficient porosity and good affinity between nanofiber and the electrode/electrolyte resulted in high saturated electrolyte uptake and conservation rate of the nanofiber membranes. The GPEs based on the SPI/PVA composite nanofiber membranes presented remarkable electrochemical performance, including high ionic conductivity, excellent compatibility with lithium electrode and good electrochemical stability. An ionic conductivity of 3.8 × 10–3 S cm–1 and interfacial resistance of 250 Ω for the GPEs can be obtained when the weight ratio of SPI to PVA in the spinning solution was 3:1, which was more superior to the existing biobased GPEs. In addition, the Li/GPE/LiCoO2 cells with GPEs based o...