论文标题
li-ion和na-ion电池的二维阳极材料的创纪录的高离子存储能力
A Record-High Ion Storage Capacity of T-Graphene as Two-Dimensional Anode Material for Li-ion and Na-ion Batteries
论文作者
论文摘要
近年来，开发具有高性能的适用二维（2D）电极材料，尤其是具有高离子存储能力，已成为越来越强迫的追求。基于第一原理计算，我们报告说，基于碳的新型2D材料T-Graphene具有创纪录的LI/NA存储容量。对于Li，T-膦烯的容量高达2233.2 mA H G-1，对于Na而言，Na的能力可以达到2357.2 mA H G-1，这是商业石墨的6倍，并且是迄今为止确定的2D阳极材料中最高的。我们证明，T-Graphene的超高存储能力主要受益于其低原子质量和特殊周期性晶格结构。 T-膦烯不仅具有超高的存储能力，而且还具有稳定的离子吸附，良好的电导率，快速离子扩散速度和低的开路电压，这是借用超高存储能力的锂离子和Na-ion电池的优质阳极材料所需的优点。
Developing applicable two-dimensional (2D) electrode materials with high performance, especially with high ion storage capacity, has become an ever more obsessive quest in recent years. Based on first-principles calculations, we report that T-graphene, a new carbon-based 2D material, has a record-high Li/Na storage capacity. The capacity of T-graphene is as high as 2233.2 mA h g-1 for Li, and can reach 2357.2 mA h g-1 for Na, which are 6 times as much as that of the commercial graphite and are the highest among 2D anode materials identified so far. We demonstrate that the ultrahigh storage capacity of T-graphene mostly benefits from its low atomic mass and special periodic lattice structure. T-graphene has not only the ultrahigh storage capacity but also hosts the stable ion adsorption, good electric conductivity, fast ion diffusion speed, and low open-circuit voltage, which are merits required as a superior anode material for Li-ion and Na-ion batteries with ultrahigh storage capacity.
