<p>In this paper, cadmium germanate (Cd₂Ge₂O₆) was synthesized via the hydrothermal method. The target compounds were characterized by scanning electron microscopy, transmission electron microscopy, and X-ray diffraction techniques. Their electrochemical properties were explored using a battery test system and an electrochemical workstation. The experimental results showed that Cd₂Ge₂O₆ microrods were formed. The pH of the reaction solution significantly influenced the morphology and electrochemical properties of cadmium germanate (Cd₂GeO₄). CGO-2 microrods synthesized at pH 12 exhibited the best performance. During the first time of discharge, its specific capacity reached 2080 mAh&#xa0;g⁻¹. At a current density of 100 mAh&#xa0;g⁻¹, the specific capacity in the second cycle remained at 1350 mAh&#xa0;g⁻¹. Nonetheless, CGO-2 had poor cycling stability. After 150 cycles, its reversible capacity dropped to 160 mAh&#xa0;g⁻¹, with an 81.5% decay rate. To tackle this, a carbon composite approach was applied. The CGO/C-3 composite owned excellent cycling performance under the same load condition. After 150 cycles, its reversible capacity stayed around 727 mAh&#xa0;g⁻¹. The article also analyzed the reasons that CGO/C-3 behaved superior electrochemical performance. Evidently, The CGO/C-3 synthesized under typical conditions is a promising anode material for lithium-ion batteries.</p>