An environment-friendly, water-soluble, and cellulose based binder (lithium carboxymethyl cellulose, CMC-Li) was successfully synthesized by using Li⁺ to replace Na⁺ in the commercial sodium carboxymethyl cellulose (CMC-Na). Li-O₂ batteries based on the CMC-Li binder present enhanced discharge specific capacities (11151 mAh/g at 100 mA/g) and a superior cycling stability (100 cycles at 200 mA/g) compared with those based on the CMC-Na binder. The enhanced performance may originate from the electrochemical stability of the CMC-Li binder and the ion-conductive nature of CMC-Li, which promotes the diffusion of Li⁺ in the cathode and consequently retards the increase of charge transfer resistance of the cathode during cycling. The results show that the water-soluble CMC-Li binder can be a green substitute for poly(vinylidene fluoride) (PVDF) binder based on organic solvent in the lithium oxygen batteries (LOBs).

以Li ⁺取代市售羧甲基纤维素钠（CMC-Na）中的Na ⁺，成功合成了一种环保型水溶性纤维素基粘合剂（羧甲基纤维素锂，CMC-Li ）。与基于 CMC-Li 粘合剂的电池相比，基于 CMC-Li 粘合剂的Li-O ₂电池具有更高的放电比容量（100 mA/g 时为 11151 mAh/g）和优异的循环稳定性（200 mA/g 时 100 次循环）。钠粘合剂。增强的性能可能源于 CMC-Li 粘合剂的电化学稳定性和 CMC-Li 的离子导电性，这促进了 Li ⁺的扩散在阴极中，因此在循环过程中延缓了阴极电荷转移电阻的增加。结果表明，水溶性CMC-Li粘合剂可以作为锂氧电池（LOBs）中基于有机溶剂的聚偏二氟乙烯（PVDF）粘合剂的绿色替代品。