Binders play a critical role in the mechanical stabilization of electrodes. However, commercial-grade adhesive polyvinylidene fluoride is soluble in N-methyl-2-pyrrolidone, which is an organic solvent that is both toxic and expensive. Therefore, water-soluble binders have recently been considered as a promising alternative. In this study, an aqueous polymer with an interpenetrating network was introduced as a binder. Poly(acrylic acid), polyvinyl alcohol, and lithiated sulfosuccinic acid precursors were employed for blending through an esterification reaction at a high temperature. This gel-like binder exhibited excellent cycling stability and high coulombic efficiency even at high current densities because of the promotion of ionic conductivity. This ionic polymer was systematically connected with active materials to ameliorate the electrochemical polarization of interfacial resistance. On the basis of these advantages, as well as its low cost, facile manufacturing process, and high performance, this simple method provides a pathway for achieving a commercial-grade high-capacity for Li-ion batteries. The electrochemical performance of LiFePO₄/C electrodes maintained a specific capacity of 170 mAhg⁻¹ over 200 cycles at first charge, coupled with a coulombic efficiency of approximately 99% reversibility. In brief, an LiFePO₄/C cathode with water-based binders demonstrated superior electrochemical performance in a half-cell test. The development of aqueous processing should provide considerable potential for meeting the requirements of next-generation high-power Li-ion batteries.

粘合剂在电极的机械稳定性中起关键作用。然而，商业级粘合剂聚偏二氟乙烯可溶于N-甲基-2-吡咯烷酮，N-甲基-2-吡咯烷酮是有毒且昂贵的有机溶剂。因此，水溶性粘合剂最近被认为是有前途的替代品。在这项研究中，引入了具有互穿网络的水性聚合物作为粘合剂。聚丙烯酸，聚乙烯醇和锂化磺基琥珀酸前体用于在高温下通过酯化反应进行共混。即使在高电流密度下，由于促进离子导电性，该凝胶状粘合剂也表现出优异的循环稳定性和高库伦效率。该离子聚合物与活性材料系统连接，以改善界面电阻的电化学极化。基于这些优点以及其低成本，简便的制造工艺和高性能，这种简单的方法为实现锂离子电池的商业级高容量提供了一条途径。LiFePO的电化学性能₄ / C电极在首次充电时经过200个循环后，保持了170 mAhg ^-1的比容量，并具有约99％可逆性的库仑效率。简而言之，具有水基粘合剂的LiFePO ₄ / C阴极在半电池测试中显示出优异的电化学性能。水处理的发展应为满足下一代大功率锂离子电池的需求提供巨大潜力。