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Hierarchically Porous CuCo2O4 Microflowers: A Superior Anode Material for Li-ion Batteries and a Stable Cathode Electrocatalyst for Li-O2 Batteries

Journal Article


Abstract


  • Hierarchical CuCo2O4 microflowers (CCFs) self-assembled by thin and porous nanosheets were synthesized by a simple solvothermal reaction followed by a low-temperature calcination. The porous nanosheets not only shorten the Li-ion diffusion distances and tolerate the volume variation upon cycling, but also enhance the transportation of oxygen and Li+ ions, and have abundance of active sites on the surface. Thus, it has been explored as the superior anode material in Li-ion batteries and as the cathode catalyst in Li-O2 batteries. Both of applications exhibit the remarkable electrochemical properties. In lithium ion batteries, CuCo2O4 micro-flowers deliver a specific lithium storage capacity of 871 mA h g-1, after 300 cycles at 100 mA g-1. Even at a high rate of 1 A g-1, the reversible capacity of the CuCo2O4 microflowers still remains at 612 mA h g-1 after 500 cycles. In Li-O2 batteries, CuCo2O4 microflowers as the cathode catalyst last 120 cycles, much longer than highly aggregated CuCo2O4 and pure carbon.

Publication Date


  • 2016

Citation


  • Niu, F., Wang, N., Yue, J., Chen, L., Yang, J., & Qian, Y. (2016). Hierarchically Porous CuCo2O4 Microflowers: A Superior Anode Material for Li-ion Batteries and a Stable Cathode Electrocatalyst for Li-O2 Batteries. Electrochimica Acta, 208, 148-155. doi:10.1016/j.electacta.2016.05.026

Scopus Eid


  • 2-s2.0-84969570436

Start Page


  • 148

End Page


  • 155

Volume


  • 208

Issue


Place Of Publication


Abstract


  • Hierarchical CuCo2O4 microflowers (CCFs) self-assembled by thin and porous nanosheets were synthesized by a simple solvothermal reaction followed by a low-temperature calcination. The porous nanosheets not only shorten the Li-ion diffusion distances and tolerate the volume variation upon cycling, but also enhance the transportation of oxygen and Li+ ions, and have abundance of active sites on the surface. Thus, it has been explored as the superior anode material in Li-ion batteries and as the cathode catalyst in Li-O2 batteries. Both of applications exhibit the remarkable electrochemical properties. In lithium ion batteries, CuCo2O4 micro-flowers deliver a specific lithium storage capacity of 871 mA h g-1, after 300 cycles at 100 mA g-1. Even at a high rate of 1 A g-1, the reversible capacity of the CuCo2O4 microflowers still remains at 612 mA h g-1 after 500 cycles. In Li-O2 batteries, CuCo2O4 microflowers as the cathode catalyst last 120 cycles, much longer than highly aggregated CuCo2O4 and pure carbon.

Publication Date


  • 2016

Citation


  • Niu, F., Wang, N., Yue, J., Chen, L., Yang, J., & Qian, Y. (2016). Hierarchically Porous CuCo2O4 Microflowers: A Superior Anode Material for Li-ion Batteries and a Stable Cathode Electrocatalyst for Li-O2 Batteries. Electrochimica Acta, 208, 148-155. doi:10.1016/j.electacta.2016.05.026

Scopus Eid


  • 2-s2.0-84969570436

Start Page


  • 148

End Page


  • 155

Volume


  • 208

Issue


Place Of Publication