Binary zinc–cobalt metal–organic framework derived mesoporous ZnCo2O4@NC polyhedron as a high-performance lithium-ion battery anode

2020 ◽  
Vol 49 (40) ◽  
pp. 14237-14242 ◽  
Author(s):  
Rui Sun ◽  
Zhaoxia Qin ◽  
Zhiyong Li ◽  
Haosen Fan ◽  
Shengjun Lu

Ternary transition metal oxides have attracted increasing attention due to their many merits, and will enhance electrochemical performance via the synergistic effects of the different single metal oxides.

2021 ◽  
Author(s):  
Bitao Su ◽  
Ming Zhong ◽  
Lingling Li ◽  
Kun Zhao ◽  
Hui Peng ◽  
...  

Searching for novel alternatives to traditional graphite anode for high performance lithium-ion batteries is of great significance, which, however, faces many challenges. In this work, a pyrolysis coupled with selenization...


2019 ◽  
Vol 75 (7) ◽  
pp. 969-978 ◽  
Author(s):  
Erbo Cheng ◽  
Shoushuang Huang ◽  
Dayong Chen ◽  
Ruting Huang ◽  
Qing Wang ◽  
...  

Metal oxides have a large storage capacity when employed as anode materials for lithium-ion batteries (LIBs). However, they often suffer from poor capacity retention due to their low electrical conductivity and huge volume variation during the charge–discharge process. To overcome these limitations, fabrication of metal oxides/carbon hybrids with hollow structures can be expected to further improve their electrochemical properties. Herein, ZnO-Co3O4 nanocomposites embedded in N-doped carbon (ZnO-Co3O4@N-C) nanocages with hollow dodecahedral shapes have been prepared successfully by the simple carbonizing and oxidizing of metal–organic frameworks (MOFs). Benefiting from the advantages of the structural features, i.e. the conductive N-doped carbon coating, the porous structure of the nanocages and the synergistic effects of different components, the as-prepared ZnO-Co3O4@N-C not only avoids particle aggregation and nanostructure cracking but also facilitates the transport of ions and electrons. As a result, the resultant ZnO-Co3O4@N-C shows a discharge capacity of 2373 mAh g−1 at the first cycle and exhibits a retention capacity of 1305 mAh g−1 even after 300 cycles at 0.1 A g−1. In addition, a reversible capacity of 948 mAh g−1 is obtained at a current density of 2 A g−1, which delivers an excellent high-rate cycle ability.


Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 191
Author(s):  
Junhao Li ◽  
Ningyi Jiang ◽  
Jinyun Liao ◽  
Yufa Feng ◽  
Quanbing Liu ◽  
...  

Transition metal oxide is one of the most promising anode materials for lithium-ion batteries. Generally, the electrochemical property of transition metal oxides can be improved by optimizing their element components and controlling their nano-architecture. Herein, we designed nonstoichiometric Cu0.6Ni0.4Co2O4 nanowires for high performance lithium-ion storage. It is found that the specific capacity of Cu0.6Ni0.4Co2O4 nanowires remain 880 mAh g−1 after 50 cycles, exhibiting much better electrochemical performance than CuCo2O4 and NiCo2O4. After experiencing a large current charge and discharge state, the discharge capacity of Cu0.6Ni0.4Co2O4 nanowires recovers to 780 mAh g−1 at 50 mA g−1, which is ca. 88% of the initial capacity. The high electrochemical performance of Cu0.6Ni0.4Co2O4 nanowires is related to their better electronic conductivity and synergistic effect of metals. This work may provide a new strategy for the design of multicomponent transition metal oxides as anode materials for lithium-ion batteries.


Nanoscale ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 6201-6211
Author(s):  
Wenxia Chen ◽  
Wei Wei ◽  
Kefeng Wang ◽  
Nan Zhang ◽  
Guangliang Chen ◽  
...  

A MOF-derived CoPO hollow polyhedron structure is designed by simultaneous oxidation/phosphatization processes during Ar–N2 RF plasma discharge.


2016 ◽  
Vol 4 (24) ◽  
pp. 9593-9599 ◽  
Author(s):  
Gaihua Li ◽  
Hao Yang ◽  
Fengcai Li ◽  
Jia Du ◽  
Wei Shi ◽  
...  

Utilizing the adsorption properties of MOFs, a nanostructured NiP2@C was successfully synthesized, which exhibited enhanced capability for lithium storage in terms of both the reversible specific capacity and high-rate performance.


2019 ◽  
Vol 48 (6) ◽  
pp. 2019-2027 ◽  
Author(s):  
Weiwei Sun ◽  
Si Chen ◽  
Yong Wang

A MOF-derived approach is used to fabricate a Fe–Mn–O/C hollow microsphere anode, which delivers excellent electrochemical performance for lithium-ion batteries.


2019 ◽  
Vol 54 (6) ◽  
pp. 1800281 ◽  
Author(s):  
Hongda Wu ◽  
Guang Li ◽  
Yue Li ◽  
Zhongxing Geng ◽  
Tieqiang Ren ◽  
...  

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