Nanostructured Co(<scp>ii</scp>)-based MOFs as promising anodes for advanced lithium storage

Ge, Danhua; Peng, Jie; Qu, Genlong; Geng, Hongbo; Deng, Yaoyao; Wu, Junjie; Cao, Xueqin; Zheng, Junwei; Gu, Hongwei

doi:10.1039/c6nj02568d

Cited by 71 publications

(17 citation statements)

References 87 publications

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“…No further improvements in peak intensities are observed beyond 120 minutes of grinding time suggesting CoBTC MOF sustained its structure and crystalinity against prolonged grinding time. Thus, it is concluded that mechanochemical formation of CoBTC MOF requires minimum 120 minutes which is considerably lesser as compared to time consuming conventional hydrothermal or solvothermal methods ,…”

Section: Resultsmentioning

confidence: 99%

“…In MOFs, metal ion or metal ion clusters assemble with large organic ligand molecules by coordination or intramolecular bonding to form a unique dimensional framework . MOFs have already found many applications in the field of catalysis, gas adsorption and storage, sensing, targeted drug delivery, lithium ion batteries, and Opto‐magnetic devices ,. In recent times, MOFs have well spread its popularity in the field of supercapacitor by either directly employing as an electrode material, or as a precursor for the electrode material.…”

Section: Introductionmentioning

confidence: 99%

“…Meanwhile, benzene‐1, 3, 5‐tricarboxylic acid (H 3 BTC) or trimesic acid and cobalt are explored as excellent materials for MOF construction because of structural rigidity of H 3 BTC and cheap, environmentally abundant cobalt. Very few articles are reported based on H 3 BTC as a ligand and cobalt as a metal ion for the preparation of CoBTC MOF and their application in catalysis, lithium ion batteries and sensors …”

Section: Introductionmentioning

confidence: 99%

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Hybrid Composite Based on Porous Cobalt‐Benzenetricarboxylic Acid Metal Organic Framework and Graphene Nanosheets as High Performance Supercapacitor Electrode

et al. 2018

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Poor electrical conductivities, structural instabilities and long synthesis procedures, limit the application of metal organic frameworks (MOFs) in energy storage systems. In the present work, we synthesize a cobalt‐benzene tricarboxylic acid based MOF (CoBTC MOF) via two different approaches i. e. solvothermal route and mechanochemical grinding for its utility in energy storage. When characterized structurally and electrochemically, the CoBTC MOF synthesized by mechanochemical method is found to be superior because of large surface area, enhanced porosity/diffusion process through MOF and structural robustness along with less time requirement. Further, its hybrid composite with graphene nanosheets (CoBTC MOF/GNS) was prepared for its performance as a supercapacitor material. The characterization reveals the formation of sandwich structure where CoBTC MOF rods (thickness ranging from 0.5 to 2 μm) are placed in between GNS. This arrangement has resulted into high specific capacitance of 608.2 F.g−1 at current density of 0.25 A.g−1 in 1 M KOH electrolyte along with excellent capacitance retention up to 94.9% after 2000 charge/discharge cycles. Also, a symmetric supercapacitor has been assembled for practical application of CoBTC MOF/GNS which demonstrates specific capacitance of 183.2 F.g−1 with high energy density and power density of 49.8 Wh.kg−1 and 1025.8 W.kg−1 respectively, along with 92.1% retention of initial capacitance after 5000 charge‐discharge cycles.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hybrid Composite Based on Porous Cobalt‐Benzenetricarboxylic Acid Metal Organic Framework and Graphene Nanosheets as High Performance Supercapacitor Electrode

et al. 2018

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“…In the subsequent cycles the capacity increased gradually to 358 mA h g –1 at the 200th cycle. This phenomenon may be due to slow electrochemical activation of the SEI through structural transformation. − The rate performance of the two electrodes was evaluated at different current densities (Figure d). The reversible capacities measured for 1 at 100, 200, 500, and 1000 mA g –1 are 617, 524, 416, and 346 mA h g –1 , respectively, which are all significantly higher than the corresponding values for 2 (280, 177, 95, and 42 mA h g –1 ).…”

Section: Resultsmentioning

confidence: 99%

Pillared-Layer Metal–Organic Frameworks for Improved Lithium-Ion Storage Performance

Gong

Lou

Gao

et al. 2017

ACS Appl. Mater. Interfaces

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Recently, more and more metal-organic frameworks (MOFs) have been directly used as anodic materials in lithium-ion batteries, but judicious design or choice of MOFs is still challenging for lack of structural-property knowledge. In this article we propose a pillared-layer strategy to achieve improved Li-storage performance. Four Mn(II) and Co(II) MOFs with mixed azide and carboxylate ligands were studied to illustrate the strategy. In these 3D MOFs, layers (1, 3, and 4) or chains (2) with short bridges are linked by long organic spacers. All the MOFs show very high lithiation capacity (1170-1400 mA h g at 100 mA g) in the first cycle owing to the rich insertion sites arising from the azide ion and the aromatic ligands. After the formation cycles, the reversible capacities of the anodes from 1, 3, and 4 are kept at a high level (580-595 mA h g) with good rate and cycling performance, while the anode from 2 undergoes a dramatic drop in capacity. All the MOFs lose the crystallinity after the first cycle. While the amorphization of the chain-based framework of 2 leads to major irreversible deposit of Li ions, the amorphous phases derived from the pillared-layer frameworks of 1, 3, and 4 still retain rich accessible space for reversible insertion and diffusion of active Li ions. Consistent with the analysis, electrochemical impedance spectra revealed that the pillared-layer MOFs led to significantly smaller charge-transfer resistances than 2. Soft X-ray absorption spectroscopy suggested that no metal conversion is involved in the lithiation process, consistent with the fact that the isomorphous Co(II) (3) and Mn(II) (4) MOFs are quite similar in anodic performance.

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“…Devic et al [39] reported that MIL-136(Ni,Co), a MOF material, is not suitable to be used as electrode materials because MIL-136 can neither carry out the redox conversion reaction nor has good lithium ion mobility. Unlike MIL-136(Ni,Co), Gu et al [40] synthesized a kind of Co-containing MOFs by the solvothermal method. The Co-based metal-organic framework (Co-MOF) (Co-BTC) was directly used as anode materials without calcination treatment.…”

Section: Mofs As Electrode Materials For Lithium-ion Batteries 21 Mof-based Cathode Materialsmentioning

confidence: 99%

The application of metal-organic frameworks in electrode materials for lithium–ion and lithium–sulfur batteries

2019

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Metal-organic frameworks (MOFs) have gained increased attention due to their unique features, including tunable pore sizes, controllable structures and a large specific surface area. In addition to their application in gas adsorption and separation, hydrogen storage, optics, magnetism and organic drug carriers, MOFs also can be used in batteries and supercapacitors which have attracted the researcher's attention. Based on recent studies, this review describes the latest developments about MOFs as battery electrode materials which are used in lithium–ion and lithium–sulfur batteries.

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Nanostructured Co(ii)-based MOFs as promising anodes for advanced lithium storage

Abstract: A novel kind of Co-containing metal–organic frameworks (Co-BTC MOFs) are firstly developed as anodes for LIBs with excellent electrochemical performance.

Cited by 71 publications

References 87 publications

Hybrid Composite Based on Porous Cobalt‐Benzenetricarboxylic Acid Metal Organic Framework and Graphene Nanosheets as High Performance Supercapacitor Electrode

Hybrid Composite Based on Porous Cobalt‐Benzenetricarboxylic Acid Metal Organic Framework and Graphene Nanosheets as High Performance Supercapacitor Electrode

Pillared-Layer Metal–Organic Frameworks for Improved Lithium-Ion Storage Performance

The application of metal-organic frameworks in electrode materials for lithium–ion and lithium–sulfur batteries

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