MoS₂ is a promising anode with high theoretical capacity in lithium-/sodium-ion batteries. Nevertheless, the unstable structure and poor conductivity of MoS₂ limit its practical applications. Herein, a carbon layer-coated MoS₂ composite (MoS₂/C) is synthesized by a pyrolysis strategy, in which ionic liquid-derived carbon improves the conductivity and structural stability of composites by wrapping MoS₂. When MoS₂/C composite is used as anode in lithium-/sodium-ion batteries, it exhibits excellent stability, high capacity and long cycle life. After 50 cycles at 100 mA g⁻¹, the lithium storage capacity of the MoS₂/C composite is more than 760 mAh g⁻¹, and the sodium storage capacity reaches 480 mAh g⁻¹. When the current density is 2 A g⁻¹, the sodium storage capacity maintains at 355 mAh g⁻¹ after 500 cycles. Even after 1000 cycles, it still exhibits a stable lithium storage capacity of 350 mAh g⁻¹ at the current density of 4 A g⁻¹. The improved performance of MoS₂/C composite can be explained by its stable structure and high charge mobility.

MoS ₂是锂/钠离子电池中具有高理论容量的有前途的阳极。然而，MoS ₂的不稳定结构和差的电导率限制了其实际应用。本文中，通过热解策略合成了涂覆有碳层的MoS ₂复合材料（MoS ₂ / C），其中离子液体衍生的碳通过包裹MoS ₂改善了复合材料的导电性和结构稳定性。当MoS ₂ / C复合材料用作锂/钠离子电池的负极时，它具有出色的稳定性，高容量和长循环寿命。在100 mA g ^-1下循环50次后，MoS ₂的锂存储容量/ C复合材料大于760 mAh g ^-1，钠存储容量达到480 mAh g ^-1。当电流密度为2 A g ^-1时，经过500次循环后，钠存储容量保持在355 mAh g ^-1。即使经过1000次循环，它在4 A g ^-1的电流密度下仍显示出350 mAh g ^-1的稳定锂存储容量。MoS ₂ / C复合材料的性能改善可以用其稳定的结构和高的电荷迁移率来解释。