Robust synthesis of hierarchical mesoporous hybrid NiO-MnCo₂O₄ microspheres and their application in Lithium-ion batteries

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• 作者：Tao Li ; Xinhai Li ; ^{xinhaili_csu@126.com" class="auth_mail" title="E-mail the corresponding author} ; ^{xinhai-li@csu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Zhixing Wang ; Huajun Guo ; Qiyang Hu ; Wenjie Peng
• 关键词：Lithium ion batteries ; Anode ; Hybrid metal oxides ; Spray pyrolysis ; Mesoporous microsphere
• 刊名：Electrochimica Acta
• 出版年：2016
• 出版时间：10 February 2016
• 年：2016
• 卷：191
• 期：Complete
• 页码：392-400
• 全文大小：4263 K

文摘

Hierarchical mesoporous hybrid NiO–MnCo₂O₄ microspheres are synthesized by a robust one-pot spray pyrolysis process. The mesoporous hybrid NiO–MnCo₂O₄ microspheres are comprised of homogeneously dispersed nanoscaled NiO and MnCo₂O₄ subunits. Specific surface area of the mesoporous hybrid NiO–MnCo₂O₄ microspheres is determined to be 10.2 m² g⁻¹ with dominant pore size of 25.8 nm. The as-obtained material is evaluated as anode material for LIBs. The as-prepared hybrid NiO–MnCo₂O₄ sample demonstrate better electrochemical performances, including higher reversible capacity and superior rate capability, compared with the single-phase NiO and MnCo₂O₄ samples. These superior electrochemical performances should be mainly attributed to its porous microstructure characteristics and the synergistic effects between the well-dispersed NiO and MnCo₂O₄ nanophases. The strategy is simple and flexible, so it could be readily generalized to construct other hybrid metal oxides materials.