Study on the properties of Cu powder modified 3-D Co-MOF in electrode materials of lithium ion batteries

A new 3-D Co-MOF with the molecular formula of C 10 H 8 Co 3 N 4 O 12 was prepared by hydrothermal method . As the anode for lithium ion battery , the electrode modified with 20% copper powder (Co-MOF-20) shows the specific capacity of 1138.5 mAh g −1 at 100 ​mA ​g −1 . Even under the high current test of 500 ​mA ​g −1 , Co-MOF-20 also shown excellent performance (349.6 mAh g −1 ) after 300 cycles. The advantages of Co-MOF-20 electrode are not only due to the introduction of copper powder conductive agent, but also the existence of three-dimensional structure which can provide ion transport channels.