MXenes公司
阳极
材料科学
法拉第效率
化学工程
电池(电)
储能
电化学
纳米技术
纳米颗粒
碳纤维
电极
兴奋剂
复合数
复合材料
化学
光电子学
物理化学
功率(物理)
工程类
物理
量子力学
作者
Uthman Alli,K. J. McCarthy,Ioan-Alexandru Bărăgău,Nicholas P. Power,David Morgan,Steven C. Dunn,Seamus Killian,Tadhg Kennedy,Suela Kellici
标识
DOI:10.1016/j.cej.2021.132976
摘要
Anode materials are key to determining the energy density, cyclability and of life recyclability for Li-ion energy storage systems. High surface area materials, such as MXenes, can be manufactured with improved electrochemical properties that remove the need for polymeric binders or hazardous chemicals that pose a challenge to recycle Li-ion batteries. However, there remains a challenge to produce Li-ion anode materials that are binder free and poses energy storage characteristics that match the current carbon-based electrodes. Here we show the synthesis of N-doped MXene-TiO2 hybrid anode materials using an aqueous route. N-doped TiO2-MXene was modified using a single step continuous hydrothermal process. Capacity tests indicate an improvement from the initial specific energy capacity of 305 mAhg−1 to 369 mAhg−1 after 100 cycles at a charge rate of 0.1 C and a Coulombic efficiency of 99.7%. This compares to 252 mAhg−1 for the unmodified MXene which exhibited significant capacity fade to 140 mAhg−1. The ability to manufacture a Li-ion anode that does not require toxic chemicals for processing into an electrode and exhibits good energy storage characteristics in a binder free system is a significant step forward for energy storage applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI