Liu Jinjin, Zhang Runhao, Xie Xintai, Wang Juan, Jin Fazheng, Wang Zhifang, Wang Tonghai, Cheng Peng, Lu Jianhao, Zhang Zhenjie
Frontiers Science Centre for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, China.
School of Materials Science and Engineering, Tiangong University, Tianjin, 300387, China.
Angew Chem Int Ed Engl. 2025 Jan 10;64(2):e202414211. doi: 10.1002/anie.202414211. Epub 2024 Nov 29.
Solid-state electrolytes (SSEs) with high Li-ion transference numbers and fast ionic conductivity are urgently needed for technological innovations in lithium-metal batteries. To promote the dissociation of ion pairs and overcome the mechanical brittleness and interface defects caused by traditional fillers in polymeric electrolytes, we designed and fabricated a cationic hypercrosslinking metal-organic polyhedra (HCMOPs) polymer as SSE. Benefiting a three-component synergistic effect: cationic MOPs, branched polyethyleneimine macromonomer and polyelectrolyte units, the Li-HCMOP electrolyte possesses a high Li-ion conductivity, a high Li-ion transference number and a low activation energy. The LiFePO/Li battery exhibits high capacity with superior rate performance and cycling stability. Moreover, soluble MOPs serve as high crosslinking nodes to provide excellent mechanical strength for electrolytes and good compatibility with polymers. This work highlights an effective idea of high-performance MOP-based solid-state electrolytes applied in LMBs.
