Graphene-Wrapped ZnMn2O4 Nanoparticles with Enhanced Performance as Lithium-Ion Battery Anode Materials

NANO ◽  
2020 ◽  
Vol 15 (09) ◽  
pp. 2050117
Author(s):  
Meng Sun ◽  
Sijie Li ◽  
Jiajia Zou ◽  
Zhipeng Cui ◽  
Qingye Zhang ◽  
...  

ZnMn2O4 nanoparticles (NPs) wrapped by reduced graphene oxide (rGO) were fabricated via a two-step solvothermal method and used as an anode material for lithium-ion batteries (LIBs). Compared to pure ZnMn2O4, the ZnMn2O4 NPs/rGO composites deliver higher capacities of 1230 mAh g−1 and 578 mAh g−1 after 200 cycles at a current density of 100 mA g−1 and 500 mA g−1, respectively. The enhanced electrochemical performance of ZnMn2O4 NPs/rGO composites is mainly attributed to a distinctive structure (ZnMn2O4 NPs surrounded by flexible rGO), which can promote the diffusion of Li+, accelerate the transport of electrons and buffer volume expansion during the Li+ insertion/extraction process. Furthermore, the rGO sheets can effectively prevent the agglomeration of ZnMn2O4 NPs, thus, improving structural stability of the composites. The excellent electrochemical performance indicates that such ZnMn2O4 NPs/rGO composite structure has a great potential for high-performance LIBs.

2017 ◽  
Vol 5 (32) ◽  
pp. 17001-17011 ◽  
Author(s):  
Rui Zhang ◽  
Dong Wang ◽  
Lu-Chang Qin ◽  
Guangwu Wen ◽  
Hong Pan ◽  
...  

The MnCO3/Mn3O4/reduced graphene oxide ternary composites which exhibit excellent electrochemical performance are synthesised via a green and facile method.


2015 ◽  
Vol 3 (43) ◽  
pp. 21569-21577 ◽  
Author(s):  
Zhaoqiang Li ◽  
Longwei Yin

A MOF composite GO/Zn–Co–ZIF/nickel foam derived RGO/ZnCo2O4–ZnO–C/Ni sandwich-like anode exhibits excellent electrochemical performance as a binder-free anode for LIBs.


RSC Advances ◽  
2015 ◽  
Vol 5 (44) ◽  
pp. 34777-34787 ◽  
Author(s):  
Longsheng Zhang ◽  
Wei Fan ◽  
Weng Weei Tjiu ◽  
Tianxi Liu

3D porous hybrids of defect-rich MoS2/graphene nanosheets (dr-MoS2/GNS) exhibit extraordinary electrochemical performance as anode materials for high performance lithium ion batteries (LIBs).


RSC Advances ◽  
2015 ◽  
Vol 5 (120) ◽  
pp. 99107-99114 ◽  
Author(s):  
Tong Zhang ◽  
Huijuan Yue ◽  
Hailong Qiu ◽  
Kai Zhu ◽  
Lijie Zhang ◽  
...  

A facile method for the synthesis of graphene-wrapped ZnMn2O4 hollow microspheres which show excellent electrochemical performance.


2018 ◽  
Vol 6 (14) ◽  
pp. 5926-5934 ◽  
Author(s):  
Jiaxue Lu ◽  
Deli Li ◽  
Li Li ◽  
Yao Chai ◽  
Meng Li ◽  
...  

The synthesis of novel Co doped Zn2GeO4 hollow micro-spheres and the enhanced electrochemical performance for lithium-ion batteries.


2015 ◽  
Vol 3 (48) ◽  
pp. 24303-24308 ◽  
Author(s):  
Yanjie Wang ◽  
Jun Ke ◽  
Yawen Zhang ◽  
Yunhui Huang

A microwave-assisted rapid synthesis method is developed to prepare mesoporous nanostructured ZnCo2O4, which shows excellent electrochemical performance as an anode material for lithium-ion batteries.


2015 ◽  
Vol 39 (10) ◽  
pp. 7923-7931 ◽  
Author(s):  
Shoupu Zhu ◽  
Ming Chen ◽  
Wenji Ren ◽  
Jiren Yang ◽  
Shanshan Qu ◽  
...  

Uniform α-Fe2O3/RGO nanocomposites were prepared using a simple and novel microwave method and the synthesized nanocomposites exhibited excellent electrochemical performance for lithium ion batteries.


2020 ◽  
Vol 9 (1) ◽  
pp. 1227-1236
Author(s):  
Yemao Lin ◽  
Jintao Huang ◽  
Ludi Shi ◽  
Guangtao Cong ◽  
Caizhen Zhu ◽  
...  

AbstractAn easy and facile hydrothermal method is presented to synthesize hybrid materials of hollow mesoporous Zn0.76Co0.24S nanospheres anchored on reduced graphene oxide (rGO) sheets (Zn0.76Co0.24S@N/S-rGO), in which the obtained Zn0.76Co0.24S nanospheres are composed of numerous nanoparticles. Being evaluated as anode materials for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs), the Zn0.76Co0.24S@N/S-rGO composites exhibited a high reversible capacity of 804 and 605 mA h g−1 at the current density of 1 A g−1 after 500 cycles for LIBs and SIBs, respectively. The excellent electrochemical performance of Zn0.76Co0.24S@N/S-rGO composites originates from the synergistic effect between hollow Zn0.76Co0.24S nanospheres and reduction graphene, as well as the void spaces between the neighbouring nanoparticles of Zn0.76Co0.24S providing large contact areas with electrolyte and buffer zone to accommodate the volume variation during the cycling process.


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