Metal-Organic-Framework derived Co@CN modified horizontally aligned graphene oxide array as free-standing anode for lithium-ion batteries

Author(s):  
Yong Wang ◽  
Jiawei Li ◽  
Xinyang Li ◽  
Hong Jin ◽  
Wajid Ali ◽  
...  

Graphene-based 2D materials have shown extraordinary promise in electrochemical energy storage, owing to their high electrochemical activity, fast carrier mobility, and large electronic conductivity. However, low specific capacity (<200 mAh...


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.



2020 ◽  
Vol 2 (12) ◽  
pp. 5496-5503
Author(s):  
Chong Chen ◽  
Nian-Wu Li ◽  
Bao Wang ◽  
Shuai Yuan ◽  
Le Yu

2D materials with pillared designs have shown great enhancement in specific capacity/capacitance and rate performance. In this study, we highlight the recent progress in 2D materials with pillared designs in lithium-ion storage and beyond.



2019 ◽  
Vol 55 (18) ◽  
pp. 2692-2695 ◽  
Author(s):  
Xinyan Jiao ◽  
Qingli Hao ◽  
Xifeng Xia ◽  
Zongdeng Wu ◽  
Wu Lei

For the first time, M-Nb2O5@C/rGO composites are fabricated by annealing the precursor of GO supported Nb-metal organic frameworks.



Nanoscale ◽  
2019 ◽  
Vol 11 (32) ◽  
pp. 15166-15172 ◽  
Author(s):  
Yiwen Kuang ◽  
Chen Chen ◽  
Kai Li ◽  
Baicun Hao ◽  
Jun Ma ◽  
...  

2D composite nanosheets comprised of NiCo2O4 encapsulated inside ZIF-67 sandwiched graphene oxide presented exceptional cycling stability and rate capability.



2019 ◽  
Vol 2019 ◽  
pp. 1-5
Author(s):  
Chunyan Zhang ◽  
Nianqiao Qin ◽  
Jing Li ◽  
Yan Tian ◽  
Hui Zhang

Sponge-like porous Fe2O3 nanomaterials were obtained through the calcination process of the iron-based metal organic framework (MIL-101). As anode materials for lithium-ion batteries, thus, obtained products show a good electrochemical performance with a high specific capacity (1358 mA h g-1 at 100 mA g-1 in the initial cycle) and a relatively stable cycle performance (750 mA h g-1 after 80 charge/discharge cycles). The superior cycling performance may be attributed to their special structure, which facilitates charge transfer and Li+ diffusion.



2021 ◽  
Vol 17 ◽  
Author(s):  
Mingxuan Guo ◽  
Haibo Li

Background: Owing to the excellent theoretical specific capacity and safety intercalation potential, Li3VO4¬ (LVO) has been proposed as anadvanced anode material for lithium ions batteries (LIBs). However, the LVO suffers from low electronic conductivity that limits its commercialization. Objective: The reduced graphene oxide (rGO) is recommended to couple with micro-LVO particles aiming to enhance the conductivity of compositeelectrodes. Method: The LVO@rGO compositeis synthesized by a facile hydrothermal method. The morphology, crystallinity, valance state and electrochemical behavior of LVO@rGO are characterized by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and electrochemical workstation, respectively. Further, the LIBs’ performance is explored by making a coins-type half-cell LIBs battery via battery system. Results: The Li+ diffusion rate of the optimized LVO@rGO electrode is 7.67×10-23 cm2 s-1, which improves two orders of magnitudesof pure LVO electrode. As a result, the LVO@rGO anode delivers a reversible capacity of 190.1 mAh/g at 0.1 A/g after 100 cycles, which is even twice higher than that of pure LVO anode (90.6 mAh/g). Besides,it exhibitssuperior rate capability, i.e.a reversible capability of 285.0, 220.2, 158.7, 105.2 and 71.7 mAh/g at 0.05, 0.1, 0.2, 0.5 and 1.0 A/g, respectively. Conclusion: The high conductivity and flexible texture enable rGO an idea building block to enhance the Li ion diffusion of whole electrode. On the other hand, it is instrumental in alleviating the aggregation of host materials, leading to high specific surface and specific capacity.



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