阳极
化学工程
电解质
材料科学
碳纤维
钠离子电池
钠
离子
硒化物
多孔性
纳米技术
复合数
法拉第效率
电极
化学
复合材料
物理化学
有机化学
工程类
硒
冶金
作者
Liuyang Zhang,Ping Xie,Xilong Zhang,Bicheng Zhu,Tao Liu,Jiaguo Yu
标识
DOI:10.1016/j.jcis.2024.02.112
摘要
Sodium-ion batteries offer significant advantages in terms of low-temperature performance and safety. In this study, we present a straightforward synthetic approach to produce bimetallic selenide NiCoSe2 nanoparticles grown on a three-dimensional porous carbon framework for application as anode materials in sodium-ion batteries. This unique architecture enhances reaction kinetics and structural stability. The three-dimensional interconnected porous carbon network establishes a continuous pathway of electronic conductive, while increasing specific surface area and mitigating volume expansion. Consequently, these features expedite ion transfer and enhance electrolyte interaction. Notably, compared to CoSe, NiCoSe2 exhibits reduced ion transport distances and lower sodium diffusion barriers. Leveraging these attributes, NiCoSe2/N, Se co-doped carbon composite materials (NiCoSe2/NSC) demonstrate a high specific capacity of 320.8 mAh/g, even after 1000 cycles at 5.0 A/g, with a capacity retention rate of 85.1%. The study further delves into the revelation of the reaction mechanism and ion transport pathway through in-situ X-ray diffraction (XRD) analysis and theoretical calculations. The development of these anode materials is poised to pave the way for advancements in sodium-ion battery technology.
科研通智能强力驱动
Strongly Powered by AbleSci AI