Recent progress on MOF‐derived carbon materials for energy storage

Ren, Jincan; Huang, Yu‐Ying; Zhu, He; Zhang, Binghao; Zhu, Hecheng; Shen, Shenghui; Tan, Guoqiang; Wu, Feng; He, Hao; Lan, Si; Xia, Xinhui; Liu, Qi

doi:10.1002/cey2.44

Cited by 261 publications

(116 citation statements)

References 192 publications

(302 reference statements)

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“…With abundant metal/organic species and extraordinary tunability of structures, MOFs are promising self‐sacrificing templates/precursors for preparation of carbon‐based conductive nanomaterials by the calcination treatment. [ 170–178 ] Generally speaking, the MOFs‐derived conductive materials mainly include (heteroatom‐doped) porous carbons, metal‐based compounds, and their hybrids. [ 170,171 ] Benefit from the unique pore distribution and structure characteristics of MOF‐based precursors, the MOFs‐derived materials usually have the advantages of tailorable morphologies and hierarchical porosity.…”

Section: The Design and Synthesis Of Conductive Mofsmentioning

confidence: 99%

Conductive Metal–Organic Frameworks: Design, Synthesis, and Applications

et al. 2020

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fabricated. Combined with controlled synthesis, MOF materials are endowed with abundant various of structures, morphologies, and properties. [8-11] In addition, the as-prepared MOFs can be artificially modified via postsynthetic approaches utilizing their available pores and active sites of metal clusters or linkers. [12,13] As a result, not only the number of MOFs is further increased but also many interesting properties, such as high specific surface areas, tailorable pore sizes, modifiable structures, and properties are endowed with MOFs, which make them become potential candidates in storage/separation, catalysis, sensing, etc. [14,15] Another important application of MOFs is that they can act as conductive materials for electrocatalysis, sensing, and energy conversion, etc. [16-19] The existence of quantitative amounts of active metal centers, permanent porosity, and structural rigidity can facilitate surface contact and mass transfer as well as increase catalysis stability, making MOFs as ideal electrocatalysts. [20-22] In addition, they possess high specific surface areas, tunable bandgaps, and good charge transport properties, which extend their applications in sensing and energy storage. [23] Besides, the morphologies and characteristics of MOFs can be artificially modified to form 1D, 2D, or 3D structures via liquid phase selfassembly, physical/chemical exfoliation, layer-by-layer assembly, etc., promoting their applications in electrochemical devices and electronics. [24-26] With further structural design through postsynthesized modification, the performances of MOFs can be largely improved, facilitating their applications as conductive materials. [27-29] However, most MOFs are intrinsically electrically insulated, which seriously hinders their electrochemical applications. [29] The connected rigid metal ions and redox-inactive organic ligands increase the energy barrier for electron transfer, making them as electrical insulators. To overcome the drawbacks of MOFs, many feasible strategies have been adopted to promote the electron transfer in the structures of MOFs. [27,30-32] The high electrical conductivity of MOFs can be realized by integrating the conjugated planes or 1D chains in the structures, which relies on particular structural designs. [33-37] The conductivity of the MOFs can also be increased via doping with guest Metal-organic frameworks (MOFs) have aroused worldwide interest over the last two decades due to their various excellent properties, such as porosity, modifiability, stability, etc. Based on these unique features, they have been widely exploited for applications from electrocatalysis to electrochemical devices. However, most MOFs are inherently insulated due to the lack of free charge carriers and low-energy barriers for charge transfer, which largely restricts their further electrochemical applications. By imparting MOFs with electrical conductivity, their electrochemical process and catalysis efficiency can be effectively improved. Similarly, their applications in sensors, secon...

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Section: The Design and Synthesis Of Conductive Mofsmentioning

confidence: 99%

Conductive Metal–Organic Frameworks: Design, Synthesis, and Applications

et al. 2020

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“…At the same time, atmospheric oxygen diffuses into the porous air electrode and is reduced through the ORR to form OH − (Equation (1)). The OH − first binds Zn 2+ to form Zn(OH) 4 2− , and then further generates insoluble ZnO (Equation (2)) when Zn(OH) 4 2− reaches saturation in the electrolyte. The overall reaction for ZABs is presented as Equation 3, with an equilibrium cell voltage of 1.66 V. The air electrode consists of a substrate and a catalyst layer, providing the accommodation for both the ORR and OER.…”

Section: The Configuration Of Solid-state Zabsmentioning

confidence: 99%

“…[ 3 ] Therefore, highly efficient energy storage devices are required to enhance the energy efficiency and optimize the loading distribution of the electrical grid. [ 4 ] To date, Li‐ion batteries have become the most successful solution for energy conversion and storage, and they have been widely used in portable electronics and electric vehicles (EVs). [ 5 ] However, the long‐standing disadvantages of high cost, insufficient energy density, lithium scarcity, and safety concern significantly limit their large‐scale applications in the automobile industry, especially for the extended range EVs.…”

Section: Introductionmentioning

confidence: 99%

Defect Electrocatalysts and Alkaline Electrolyte Membranes in Solid‐State Zinc–Air Batteries: Recent Advances, Challenges, and Future Perspectives

Zhang

et al. 2020

Small Methods

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Rechargeable zinc–air batteries (ZABs) have attracted much attention due to their promising capability for offering high energy density while maintaining a long operational lifetime. One of the biggest challenges in developing all‐solid‐state ZABs is to design suitable bifunctional air‐electrodes, which can efficiently catalyze the key oxygen reduction reaction (ORR)/oxygen evolution reaction (OER) electrochemical processes. The other one is to develop robust electrolyte membranes with high ionic conductivity and superb water retention capability. In this review, an in‐depth discussion of the challenges, mechanisms, and design strategies for the defect electrocatalyst and the electrolyte membrane in all‐solid‐state ZABs will be offered. In particular, the crucial defect engineering strategies to tune the ORR/OER catalysts are summarized, including direct controllable strategies: 1) atomically dispersed metal sites control, 2) vacancy defects control, and 3) lattice‐strain control, and the indirect strategies: 4) crystallographic structure control and 5) metal–carbon support interaction control. Moreover, the most recent progress in designing electrolyte membranes, including polyvinyl alcohol‐based membranes and gel polymer electrolyte membranes, is presented. Finally, the perspectives are proposed for rational design and fabrication of the desired air electrode and electrolyte membrane to improve the performance and prolong the lifetime of all‐solid‐state ZABs.

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“…It has been reported that several types of carbon hosts, including hollow carbon, [19] porous carbon, [20] disordered carbon nanotubes, [21] mesoporous carbon nanoparticles, [22] double-shelled hollow carbon spheres, [23] and carbon foam, [24] have made significant enhancement in delivering specific capacity and cycling stability of Li-S batteries. However, the preparation of these complicated carbon materials involves several complicated and energy-intensive steps, [25][26][27] increasing the thermal budget and carbon footprint. Therefore, to reduce the overall cost considerably, it is imperative to develop facile strategies to recycle the valuable carbon hosts at their end-of-life.…”

Section: Introductionmentioning

confidence: 99%

Reversible Crosslinked Polymer Binder for Recyclable Lithium Sulfur Batteries with High Performance

Liu

Chen

et al. 2020

Adv Funct Materials

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Owing to the negative impact of the extensive utilization of batteries on the environment, sustainability of the cells needs to be included in the systemic research of batteries. Herein, a dissolvable ionic crosslinked polymer (DICP) is exploited as a binder for lithium–sulfur batteries by crosslinking the polyacrylic acid and polyethyleneimine through carboxy‐amino ionic interaction. This interaction is pH‐controlled, and therefore, the crosslinked binder network can be readily dissociated under basic conditions, providing a facile strategy enabling valuable components recycled through a convenient washing method. The sulfur cathode prepared using the recycled carbon–sulfur composite can deliver comparable capacity as that of fresh electrode. In addition, evidence from cell performance and characterizations, such as in situ X‐ray absorption spectroscopy, in situ UV–visible spectroscopy, X‐ray photoelectron spectroscopy, and density functional theory calculation, confirms that DICP is a more effective binder than its commercial counterpart on suppressing polysulfide dissolution in the electrolyte. Exploiting reversible crosslinked polymer binder for recyclable Li–S batteries with ameliorated electrochemical performance, this study illuminates sustainable development for large‐scale energy storage systems.

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Recent progress on MOF‐derived carbon materials for energy storage

Cited by 261 publications

References 192 publications

Conductive Metal–Organic Frameworks: Design, Synthesis, and Applications

Conductive Metal–Organic Frameworks: Design, Synthesis, and Applications

Defect Electrocatalysts and Alkaline Electrolyte Membranes in Solid‐State Zinc–Air Batteries: Recent Advances, Challenges, and Future Perspectives

Reversible Crosslinked Polymer Binder for Recyclable Lithium Sulfur Batteries with High Performance

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