论文标题
用于制造磷/碳切凝胶复合材料作为钠离子电池阳极的便利工艺
A Facile Process to Fabricate Phosphorus/Carbon Xerogel Composite as Anode for Sodium Ion Batteries
论文作者
论文摘要
钠离子电池由于其低成本而变得流行。在可能的钠离子电池的阳极材料中，磷由于其高理论能力而具有巨大的潜力。先前的研究产生了磷阳极的高容量和持续时间，使用了昂贵的材料，例如黑磷（BP）和磷烯。为了利用钠离子电池的低成本，我们报告了一种简单而低成本的方法来制造阳极：在碳凝胶上凝结红色磷。 Even with large particle size (~ 50 $μ$m) and high mass loading (2 mg cm$^{-2}$), the composite cycled at 100 mA g$^{-1}$ yielded a capacity of 357 mA g$^{-1}$ or 2498 mAh g$^{-1}_P$ based on phosphorus after subtracting the contribution of carbon.库仑的平均效率高达99.4％。当以200 ma g $^{ - 1} $循环时，它产生的容量为242 mAh g $^{ - 1} $或1723 mAh g $^{ - 1} _p $，平均降解率仅为80个周期的0.06％。我们的研究提供了一种创新的方法，可以以极低的成本合成钠离子电池的阳极，其性能超过或与最先进的材料相当，这将促进其商业化。
Sodium ion batteries become popular due to their low cost. Among possible anode materials of sodium ion batteries, phosphorus has great potential owing to its high theoretical capacity. Previous research that yielded high capacity and long duration of phosphorus anode used expensive materials such as black phosphorus (BP) and phosphorene. To take advantage of the low cost of sodium ion batteries, we report a simple and low-cost method to fabricate anode: condensing red phosphorus on carbon xerogel. Even with large particle size (~ 50 $μ$m) and high mass loading (2 mg cm$^{-2}$), the composite cycled at 100 mA g$^{-1}$ yielded a capacity of 357 mA g$^{-1}$ or 2498 mAh g$^{-1}_P$ based on phosphorus after subtracting the contribution of carbon. The average coulombic efficiency is as high as 99.4%. When cycled at 200 mA g$^{-1}$, it yielded a capacity of 242 mAh g$^{-1}$ or 1723 mAh g$^{-1}_P$, with average degradation rate only 0.06% in 80 cycles. Our research provided an innovative approach to synthesize anodes for sodium ion batteries at extremely low cost, with performance exceeding or comparable to state-of-the-art materials, which will promote their commercialization.
