Click-chemistry and ionic cross-linking induced double cross-linking ionogel electrolyte for flexible lithium-ion batteries
Click-chemistry and ionic cross-linking induced double cross-linking ionogel electrolyte for flexible lithium-ion batteries
复制标题
DOI：
10.1016/j.est.2023.108509
复制
发表时间：
2023-07-29
影响因子：
9.4
通讯作者：
Chen, Han
中科院分区：
文献类型：
--
作者：
Deng, Weina;Liu, Weiming;Chen, Han
随着便携式设备的扩展，高安全性和灵活的储能技术越来越受欢迎。但是，由于商用锂离子电池使用有毒、易燃、不稳定的有机液体电解质，无法为便携式设备的安全和长寿命提供足够的保护。使用硫醇盐点击反应和离子相互作用，通过将1-乙基-3-甲基咪唑鎓双（三氟甲基）酰亚胺（EMIm（TFSI））密封在双交联网络中，成功地产生双交联离子凝胶电解质（DC-离子凝胶）。双交联网络中离子交联网络和共价交联网络交织在一起，大大提高了离子凝胶电解质的柔性和稳定性。因此，DC-离子凝胶在阻燃性和热尺寸稳定性方面表现优异，并且在电化学性能方面表现优异，具有更高的室内离子电导率（1.79 × 10- 3S cm-1）和更宽的电化学窗口（5 V）。由于其优异的性能，它更有可能用于柔性储能设备。
With the expansion of portable devices, high-security and flexible energy storage technologies are gaining popularity. However, because of the use of poisonous, flammable, and unstable organic liquid electrolytes in commercial lithium-ion batteries, they cannot provide sufficient protection for the safety and long-term life of portable devices. A thiolate click reaction and ion interaction are used to successfully create a double cross-linking ionogel electrolyte (DC-Ionogel) by sealing 1-ethyl-3methyimidazolium bis (trifluoromethyl) imide (EMIm(TFSI)) in a double cross-linked network. An ion cross-linking network and a covalent cross-linking network are interlaced in the double cross-linked network, which considerably increased the flexibility and stability of the ionogel electrolyte. As a result, DC-Ionogel outperformed in terms of flame retardancy and thermal dimensional stability and outperformed in terms of electrochemical performance, with higher room ionic conductivity (1.79 x 10- 3S cm-1) and a broader electrochemical window (5 V). Due to its excellent performance, it is more likely to be used in flexible energy-storage devices.