Ionics ( IF 2.8 ) Pub Date : 2020-06-16 , DOI: 10.1007/s11581-020-03633-2 Tianren Chen , Xuemin Yan , Zhaofei Ma , Yan Zhang , Xianfeng Zheng , Yu Jiang
A MoC/C composite material was conveniently synthesized via self-polymerization and pyrolysis. MoC nanoparticles are evenly distributed upon the carbon matrix and feature a cross-linked structure that can efficiently restrain the aggregation of MoC nanoparticles and relieve the volume alteration during the charging/discharging process. Moreover, the carbon material highly improved conductivity and reduced charge transfer resistance of the MoC/C-based electrode; this ensured its long-term stability with superior reversible capacity. At a current density of 1 A g−1, the MoC/C electrode delivered a reversible specific capacity of 550 mAh g−1 even after 500 cycles, demonstrating excellent electrochemical performance. This MoC-based electrode with an ultralong life cycle could be utilized as an anode material for next-generation lithium-ion batteries.
中文翻译:
潜在地合成MoC / C复合材料作为锂离子电池阳极材料的一般方法
MoC / C复合材料可通过自聚合和热解方便地合成。MoC纳米颗粒均匀分布在碳基质上,并具有可有效抑制MoC纳米颗粒聚集并缓解充电/放电过程中体积变化的交联结构。此外,碳材料极大地提高了MoC / C基电极的导电性并降低了电荷转移电阻;这确保了其长期稳定性,并具有出色的可逆容量。在1 A g -1的电流密度下,MoC / C电极的可逆比容量为550 mAh g -1即使经过500次循环,仍具有出色的电化学性能。这种具有超长使用寿命的基于MoC的电极可以用作下一代锂离子电池的负极材料。