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Multichannel red phosphorus with a nanoporous architecture: A novel anode material for sodium-ion batteries
Journal of Power Sources ( IF 8.1 ) Pub Date : 2020-06-17 , DOI: 10.1016/j.jpowsour.2020.228459
Palanisamy Santhoshkumar , Nitheesha Shaji , Murugan Nanthagopal , Jae Woo Park , Chenrayan Senthil , Chang Woo Lee

Red phosphorus (RP) has recently been considered as an anode material for sodium-ion batteries owing to its high theoretical capacity (2596 mA h g−1). Even though it possesses high capacity, it has the major drawback of low electronic conductivity and severe volume expansion during charging/discharging. Electrode materials with multichannel RP nanoporous (MRPN) architectures have been prepared via a facile solvothermal method. These anode active materials are in the range of 50–100 nm. The MRPN-3 shows an improved discharge capacity of 1814 mA h g−1 after 100 cycles at a current density of 200 mA g−1. Furthermore, it exhibits an admirable performance at a high current density, providing excellent long-term cyclability. In this paper, we show that electrode materials with hollow nanoporous architectures offer several advantages, such as providing an efficient electron/ion transport network, buffering the volume expansion of RP nanoparticles, and enabling superior kinetics of efficient sodium-ion storage.



中文翻译:

具有纳米多孔结构的多通道红磷:一种用于钠离子电池的新型阳极材料

由于红磷(RP)的理论容量高(2596 mA hg -1),最近已被视为钠离子电池的负极材料。即使具有高容量,它也具有主要缺点,即电子电导率低,在充电/放电过程中体积膨胀严重。已通过简便的溶剂热法制备了具有多通道RP纳米孔(MRPN)结构的电极材料。这些负极活性物质的范围是50–100 nm。所述MRPN-3示出了1814毫安汞柱的改进的放电容量-1 100次循环后在200毫安g的电流密度-1。此外,它在高电流密度下表现出令人钦佩的性能,提供了出色的长期循环能力。在本文中,我们显示具有空心纳米孔结构的电极材料具有多个优点,例如提供有效的电子/离子传输网络,缓冲RP纳米颗粒的体积膨胀以及实现高效钠离子存储的优异动力学。

更新日期:2020-06-17
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