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Constructing 1D/2D NiCo-LDH Nanowire/MXene Composites for Efficient And Stable Lithium Storage
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2023-12-12 , DOI: 10.1002/admi.202300962
Tao Yang 1 , Zehao Zhang 1 , Pin Ma 1 , Haibo Li 1
Affiliation  

Bimetallic layered double hydroxide (LDH) delivers competitive performance in lithium-ion battery (LIB) because of the unique layered structure. However, the electrochemical performance of LDH is hindered by the low conductivity and the huge structure change upon cycling. To face this challenge, the 1D/2D NiCo-LDH nanowire/MXene composites (NiCo-LDH/MXene) are dedicatedly constructed via a simple one-step hydrothermal method. Owing to the robust conductive skeleton is enabled by MXene nanosheets and abundant electroactive sites provided by NiCo-LDH nanowires, the NiCo-LDH/MXene anode exhibits rapid ion diffusion, exceptional redox reaction, and superior structural stability. Consequently, it offers a high specific capacitance of 1081 mAh g−1 after 100 cycles at the current density of 100 mA g−1 and impressive rate performance, i.e., 439 mAh g−1 at the current density of 1000 mA g−1. These results will motivate the exploration of advanced electrode materials for application in energy storage devices.

中文翻译:

构建一维/二维 NiCo-LDH 纳米线/MXene 复合材料以实现高效稳定的锂存储

由于独特的层状结构,双金属层状双氢氧化物(LDH)在锂离子电池(LIB)中具有具有竞争力的性能。然而,LDH的电化学性能受到低电导率和循环时巨大结构变化的阻碍。为了应对这一挑战,通过简单的一步水热法专门构建了 1D/2D NiCo-LDH 纳米线/MXene 复合材料(NiCo-LDH/MXene)。由于 MXene 纳米片实现了坚固的导电骨架,而 NiCo-LDH 纳米线提供了丰富的电活性位点,NiCo-LDH/MXene 阳极表现出快速的离子扩散、出色的氧化还原反应和卓越的结构稳定性。因此,它在100 mA g -1 的电流密度下经过100次循环后提供了1081 mAh g -1比电容和令人印象深刻的倍率性能,即在1000 mA g -1的电流密度下为439 mAh g -1。这些结果将推动先进电极材料在储能设备中的应用探索。
更新日期:2023-12-12
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