Li-ion energy storage materials with high specific capacity and low cost have attracted much attention. Herein, a novel Cu₂CO₃(OH)₂ composite modified with SnO₂ nanowires and graphene oxide (GO) nanosheets (Cu₂CO₃(OH)₂/SnO₂@GO) termed as CC/SnO₂@GO) for anode electrodes were synthesized by a solvothermal reaction. The expected compound are characterized by X ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and thermogravimetry (TG) techniques. The electrochemical properties for Cu₂CO₃(OH)₂/SnO₂@GO are tested by battery testing system. The results show that highly reversible capacities of 928.5 mAh g⁻¹ at 200 mA g⁻¹ are obtained with excellent coulombic efficiency closed to 100% after 200 cycles. Consider of strategy of synergistic effects, CC/SnO₂@GO shows a low charge/discharge voltage platform (0.5–1.0 V). This material may be promising as a new candidate for high-energy anode material in lithium ion batteries.

高比容量，低成本的锂离子储能材料备受关注。本文中，用SnO ₂纳米线和氧化石墨烯（GO）纳米片（称为CC / SnO ₂ @GO的Cu ₂ CO ₃（OH）₂ / SnO ₂ @GO）改性的新型Cu ₂ CO ₃（OH）₂复合物用于：阳极通过溶剂热反应合成。通过X射线衍射（XRD），扫描电子显微镜（SEM），透射电子显微镜（TEM）和热重分析（TG）技术表征期望的化合物。Cu ₂ CO ₃（OH）₂的电化学性质/ SnO ₂ @GO由电池测试系统测试。结果表明，在200mA g ^-1下获得了928.5mAh g ^-1的高度可逆容量，在200次循环后库仑效率接近100％。考虑到协同效应的策略，CC / SnO ₂ @GO显示了低充电/放电电压平台（0.5–1.0 V）。这种材料有望成为锂离子电池中高能阳极材料的新候选材料。