ABSTRACT

Herein, we report the synthesis of AgWO4 nanomaterial (AWN) and Single-walled carbon nanotube (SWCNT) wrapped AgWO4 nanomaterial (AWNC) via the solvothermal method and is used as an anode material for lithium-ion battery (LIB). The AWNC exhibits, 1202 mAh g⁻¹ discharge capacity at 0.1 A g⁻¹ current density with good cyclic stability and 100% columbic efficiency even after 500 cycles. The AWNC electrode shows a reversible capacity of 594, 521, 252, 143 and 84 mAh g⁻¹ at 0.1, 0.2, 0.3, 0.5 and 1 A g⁻¹ respectively. The 543 mAh g⁻¹ reversible capacity recovered at 0.1 A g⁻¹ after cycling at several current densities suggests the good rate performance of the AWNC electrode. The decent electrochemical performance of the AWNC is due to the synergetic effect between AgWO4 and SWCNT. AWNC shows improved rate capability, better cycling stability, reversible capacity and capacity retention than that of AWN. These results suggest that AWNC is an exciting anode material for LIB

摘要

本文中，我们报告了通过溶剂热法合成AgWO4纳米材料（AWN）和单壁碳纳米管（SWCNT）包裹的AgWO4纳米材料（AWNC）的合成，并用作锂离子电池（LIB）的负极材料。AWNC在0.1 A g ^-1的电流密度下表现出1202 mAh g ^-1的放电容量，即使在经过500次循环后，仍具有良好的循环稳定性和100％的哥伦比亚效率。AWNC电极在0.1、0.2、0.3、0.5和1 A g ^-1下分别显示出594、521、252、143和84 mAh g ^-1的可逆容量。在0.1 A g ^-1下恢复了543 mAh g ^-1的可逆容量在几种电流密度下循环后，表明AWNC电极具有良好的倍率性能。AWNC的良好电化学性能归因于AgWO4和SWCNT之间的协同作用。与AWN相比，AWNC显示出更高的速率能力，更好的循环稳定性，可逆容量和容量保持能力。这些结果表明，AWNC是LIB的令人兴奋的阳极材料