Secondary lithium-bromine (Li–Br₂) batteries offer cell potentials near 4 V and storage capacities over 1200 Whkg⁻¹-LiBr. Here, we demonstrate Li–Br₂ cells with two types of carbonized metal-organic frameworks (MOFs). Carbonized MIL-53(Al) electrodes show capacities of 224 mAhg⁻¹ LiBr (at 3.4 V) and 72% capacity retention after 100 cycles, while carbonized ZIF-8 electrodes show specific capacities of 273 mAhg⁻¹ LiBr and 88% capacity retention over 100 cycles at 1C (at 3.4 V). Surface characterization (XPS, EDS) and porosimetry indicate that the ZIF-8 derived MOF electrodes are heavily microporous with heteroatom (C–N) doping. The increased capacity and reversibility of ZIF-8 derived carbon during cyclic voltammetry and cycling measurements is ascribed to higher LiBr loadings, enhanced bromine trapping and adsorption due to the electrode microporosity and heteroatom bonding.

二次溴化锂（Li–Br ₂）电池提供的电势接近4 V，存储容量超过1200 Whkg ^-1 -LiBr。在这里，我们演示了具有两种碳化金属有机骨架（MOF）的Li-Br ₂电池。碳化的MIL-53（Al）电极在100次循环后显示容量为224 mAhg ^-1 LiBr（在3.4 V电压下）和72％的容量保持率，而碳化ZIF-8电极显示的比容量为273 mAhg ^-1在1C（3.4 V）下100个循环中，LiBr和88％的容量保持率。表面表征（XPS，EDS）和孔隙率分析表明，ZIF-8衍生的MOF电极具有杂原子（C–N）掺杂的大量微孔。ZIF-8衍生碳在循环伏安法和循环测量过程中容量和可逆性的提高归因于较高的LiBr载量，由于电极微孔和杂原子键合导致的溴捕获和吸附增强。