Design and fabrication of transition metal chalcogenides hybrids for improved electrochemical performance are hotspot in materials research field. In this work, Co_0.85Se and CuCo₂Se₄ nanocrystals anchored on the carbon nanotubes are designed and synthesized using multifunctional carbon nanotubes as template (Co_0.85Se/CNTs and CuCo₂Se₄/CNTs). The cooperation of the Co_0.85Se and CuCo₂Se₄ nanocrystals and the multifunctional carbon nanotubes effectively alleviate the volume variation, enhance the active reaction site and accelerate the charge transfer of Li⁺. Therefore, the Co_0.85Se/CNTs and CuCo₂Se₄/CNTs hybrids deliver excellent electrochemical performance including superior cycle stability and high rate capacities. At high rate of 2000 mA g⁻¹, the reversible capacities up to 566 and 479 mAh g⁻¹ are achieved after 500 cycles.

在材料研究领域，提高电化学性能的过渡金属硫族化物杂化物的设计和制备成为热点。在这项工作中，使用多功能碳纳米管作为模板（Co _0.85 Se / CNT和CuCo ₂ Se ₄ / CNT）设计并合成了锚定在碳纳米管上的Co _0.85 Se和CuCo ₂ Se ₄纳米晶体。Co _0.85 Se和CuCo ₂ Se ₄纳米晶体与多功能碳纳米管的配合有效地缓解了体积变化，增强了活性反应位点并加速了Li ⁺的电荷转移。因此，公司_0.85 Se / CNT和CuCo ₂ Se ₄ / CNTs杂化物具有出色的电化学性能，包括出色的循环稳定性和高倍率容量。在2000 mA g ^-1的高速率下，经过500次循环后，可逆容量达到566和479 mAh g ^-1。