Ni/Mn₃O₄/NiMn₂O₄ Double-Shelled Hollow Spheres Embedded into Reduced Graphene Oxide as Advanced Anodes for Sodium-Ion Batteries

Authors

Chong YAN, 1. Tianjin International Joint Research Centre of Surface Technology for Energy Storage Materials, College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, China; 2. Institute of Advanced Electrochemical Energy & School of Materials Science and Engineering, Xi’an University of;
Hua-ri KOU, Technology, Xi’an, Shanxi 710048, China, Xi’an University of Technology, Xi’an 710048, China;
Bo YAN, Technology, Xi’an, Shanxi 710048, China, Xi’an University of Technology, Xi’an 710048, China;
Xiao-jing LIU, 1. Tianjin International Joint Research Centre of Surface Technology for Energy Storage Materials, College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, China; 2. Institute of Advanced Electrochemical Energy & School of Materials Science and Engineering, Xi’an University of;
De-jun LI, 1. Tianjin International Joint Research Centre of Surface Technology for Energy Storage Materials, College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, China; 2. Institute of Advanced Electrochemical Energy & School of Materials Science and Engineering, Xi’an University of;
Xi-fei LI, 1. Tianjin International Joint Research Centre of Surface Technology for Energy Storage Materials, College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, China; 2. Institute of Advanced Electrochemical Energy & School of Materials Science and Engineering, Xi’an University of; Technology, Xi’an, Shanxi 710048, China, Xi’an University of Technology, Xi’an 710048, China;Follow

Corresponding Author

Xi-fei LI(xfli2011@hotmail.com)

Abstract

Delicately building the unique nanocomposite with the combination of hollow structure and reduced graphene oxide (rGO) is highly desirable and still remains a great challenge in the field of energy conversion and storage. In this work, Ni/Mn₃O₄/NiMn₂O₄ double-shelled hollow spheres coated by rGO (denoted as R-NMN) have been successfully synthetized via one-step rapid solvothermal treatment followed by subsequent annealing for the first time. Served as anodes for sodium ion batteries (SIBs), the R-NMN composite containing 25wt% rGO exhibits a high discharge capacity of 187.8 mAh·g^-1 after 100 cycles at 50 mA·g^-1 in the potential range between 0.01 V and 3.0 V (vs. Na⁺/Na). When cycled at different current densities of 100, 200, 400, and 800 mA·g^-1, the nanocomposites deliver the reversible capacities of 213.45, 192.9, 171.7, and 149.9 mAh·g^-1, respectively, indicating a satisfactory rate capability. Our conclusions reveal that the significant improvement in electrochemical performance is mainly attributed to the enhanced conductivity, reduced ion diffusion distance and suppressed volume fluctuation. The modification strategy proposed in this study can be extended to the design of other electrode materials for sodium storage and beyond.

Graphical Abstract

Keywords

Ni/Mn3O4/NiMn2O4, reduced graphene oxide, anode materials, sodium-ion batteries

DOI Link

https://doi.org/10.13208/j.electrochem.180546

Publication Date

2019-02-28

Online Available Date

2018-08-20

Revised Date

2018-08-03

Received Date

2018-07-02

Recommended Citation

Chong YAN, Hua-ri KOU, Bo YAN, Xiao-jing LIU, De-jun LI, Xi-fei LI. Ni/Mn₃O₄/NiMn₂O₄ Double-Shelled Hollow Spheres Embedded into Reduced Graphene Oxide as Advanced Anodes for Sodium-Ion Batteries[J]. Journal of Electrochemistry, 2019 , 25(1): 112-121.
DOI: 10.13208/j.electrochem.180546
Available at: https://jelectrochem.xmu.edu.cn/journal/vol25/iss1/9