Cross-Linking of Sugar-Derived Polyethers and Boronic Acids for Renewable, Self-Healing, and Single-Ion Conducting Organogel Polymer Electrolytes.
Cross-Linking of Sugar-Derived Polyethers and Boronic Acids for Renewable, Self-Healing, and Single-Ion Conducting Organogel Polymer Electrolytes.
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DOI：
10.1021/acsaem.2c03937
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发表时间：
2023-03-13
影响因子：
6.4
通讯作者：
Buchard, Antoine
中科院分区：
文献类型：
--
作者：
Daniels, Emma L.;Runge, James R.;Oshinowo, Matthew;Leese, Hannah S.;Buchard, Antoine
本文报道了由D-木糖衍生的含二醇聚醚与1，4-苯二硼酸(PDBA)反应合成和表征有机凝胶的方法。用红外光谱(FT-IR)、热重分析(TGA)、扫描电子显微镜(FE-SEM)和流变学等方法对交联材料进行了分析。材料的流变性能可调：凝胶或粘弹性行为依赖于聚合物的浓度，力学刚度随交联剂PDBA用量的增加而增加。有机凝胶显示出自我修复的能力，并在应用和随后的菌株释放后立即恢复其存储和丢失弹性系数。通过将双(三氟甲磺酰亚胺)锂(LiTFSI)引入到交联基质中，合成了锂离子有机凝胶。这些锂-硼聚合物凝胶在25℃时表现出高的离子电导率，高达3.71×10-3 S cm-1，高的锂迁移数(t+=0.88-0.92)和电化学稳定性(4.51V)。该凝胶与锂-金属电极兼容，在电镀/剥离实验中表现出稳定的极化曲线。该系统为生产电池用可再生原料制备的自愈性凝胶聚合物电解质(GPES)提供了一个很有前途的平台。
This report describes the synthesis and characterization of organogels by reaction of a diol-containing polyether, derived from the sugar d-xylose, with 1,4-phenylenediboronic acid (PDBA). The cross-linked materials were analyzed by infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), scanning electron microscopy (FE-SEM), and rheology. The rheological material properties could be tuned: gel or viscoelastic behavior depended on the concentration of polymer, and mechanical stiffness increased with the amount of PDBA cross-linker. Organogels demonstrated self-healing capabilities and recovered their storage and loss moduli instantaneously after application and subsequent strain release. Lithiated organogels were synthesized through incorporation of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) into the cross-linked matrix. These lithium–borate polymer gels showed a high ionic conductivity value of up to 3.71 × 10–3 S cm–1 at 25 °C, high lithium transference numbers (t+ = 0.88–0.92), and electrochemical stability (4.51 V). The gels were compatible with lithium-metal electrodes, showing stable polarization profiles in plating/stripping tests. This system provides a promising platform for the production of self-healing gel polymer electrolytes (GPEs) derived from renewable feedstocks for battery applications.
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