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Porous energy storage in coal matrix


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Long-Term Evolution of Coal Permeability Under Effective

Coal permeability is widely studied due to its importance for a variety of areas such as CO 2 storage in coal seams. Coal swelling due to gas adsorption during CO 2 injection has an important influence on the evolution of permeability (Somerton et al. 1975; Siriwardane et al. 2009; Chen et al. 2011) is also a common issue for coalbed methane extraction and

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Hierarchically structured porous materials: synthesis strategies and

The present review aims at illustrating the benefits of hierarchically structured porous materials in energy storage and will be divided into four sections. After the introduction, in the second section, a very brief presentation on the synthesis of different hierarchically structured porous materials with various porosities at different length

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Pore-structure control of porous carbon electrode materials and energy

In order to study the energy storage mechanism of porous carbon electrode in 17 m NaClO 4 electrolyte system, Investigation of structural Characteristics of thermally metamorphosed coal by FTIR spectroscopy and X-ray Diffraction. Energy Fuels, 27 (2013), pp. 5823-5830, 10.1021/ef401276h. View in Scopus Google Scholar

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Preparation of hierarchical porous carbons from a coal tar pitch

A template-free strategy was designed to prepare hierarchical porous carbons (HPCs) using fluid catalytic cracking oil modified a coal tar pitch (CTP). The resulting HPCs possess large specific surface areas, reasonable pore size distributions, and wrinkled structures, which could improve the overall electrochemical performance. They exhibit a specific

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Application of Fiber Biochar–MOF Matrix Composites in

The rapid consumption of traditional energy urgently requires us to explore sustainable and reliable energy storage in order to alleviate as a new type of porous material, have excellent and Jiaqi Xiao. 2022. "Application of Fiber Biochar–MOF Matrix Composites in Electrochemical Energy Storage" Polymers 14, no. 12: 2419. https://doi

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Coal tar-pitch derived porous carbons with zinc oxide

The development of advanced carbon materials is indispensable for high-performance supercapacitors. Herein, we report the direct pyrolysis of waste coal-tar pitch (CTP) with ZnO nanoparticles (Zn NPs) to produce hierarchical porous carbon materials (HPCs). The CTP served as a carbon source, and the embedded ZnO NPs as a simultaneous templating

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Functionalized Nano-porous Silicon Surfaces for Energy Storage

A material that has a small hole in it through which water, liquid, vapors, and gas can be passed and provide large surface to volume ratio in the order of 500 m 2 /cm 3 called porous materials. Porous silicon (PS) which has accidentally discovered while Uhlir Jr. and Ingeborg Uhlir in 1956 at the Bell labs in U.S. were developing a technique for polishing and

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Pore-scale hydro-mechanical modeling of gas transport in coal matrix

Coal is fractured by nature; it is a dual porosity/permeability system made up of a porous matrix surrounded by fractures known as cleats (Fig. 1, scale II).The orientation of this quasi-orthogonal cleat network including tensile fractures or face cleats, and compressive and strike-slip fractures or butt cleats, depends on the principal stress'' directions [7] and provides

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Coal, Porosity

Coal pore system is of great significance in relation to coal bed methane (CBM) because pore system controls storage of methane gas in it, flow of gas and fluid through it, adsorption/desorption, etc. (Chandra 1997). Thus proper understanding and knowledge of pore system is essential for evaluation of CBM potentiality.

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Layered double hydroxides–polymer matrix composites: nexus

Recently, Yang et al. developed CoAl-LDH/PANI composite for usage in energy storage, wherein the CoAl-LDH is the inner layer while PANI forms the outer layer (Yang et al. 2019). This material exhibited specific capacitance = 528 F g −1 at current density = 10 A g −1 and exemplary capacitance retention = 142.7% after 6000 cycles.

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Characterization of Coal Pore Structure and Matrix

In China, the exploration and development of low-rank coalbed methane (CBM) resources are in the early stage, and in-situ pyrolysis is an effective technology for mining of low-rank CBM resources. In this paper, N2 adsorption method and high-pressure mercury injection test were used to study the pore structure characteristics of coal samples by water vapor

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Conversion of Coal into Graphitized Microcrystalline Carbon

The hydrogen storage capacity of the coal-based porous carbon electrodes was measured via chronopotentiometry using a three-electrode electrolytic cell at atmospheric pressure and room temperature. The three-electrode system consisted of a coal-based porous carbon working electrode, a platinum plate as the counter electrode, Hg/HgO as the

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Enhancing zinc-ion storage capacity of coal tar-derived porous

Enhancing zinc-ion storage capacity of coal tar-derived porous carbon by functionalization and hierarchical structure design The accelerated progress of electric vehicles and massive energy storage systems has challenged current rechargeable Li-ion batteries and conventional supercapacitors to fulfill safety, fast charging and high energy

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Nitrogen-doped porous carbon from coal for high efficiency CO

Herein, we report a facile synthesis strategy of N-doped porous carbon (denoted as CNPC) by etching coal powder in ammonia atmosphere. When evaluated as electrocatalyst in CO 2 RR, the CNPC can convert CO 2 into CO with a high FE of 92% at the low potential of −0.6 V versus reversible hydrogen electrode (vs. RHE). This work provides an effective way for

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Porous ceramic stabilized phase change materials for thermal energy storage

This paper aimed to develop a novel form-stable composite phase change material (PCM) by infiltrating molten Na 2 SO 4 into a mullite-corundum porous ceramic preform (M-PCP). Sufficient coal-series kaolinite (Kc), aluminum hydroxide, aluminum fluoride and graphite were mixed and subsequently heated in air at 1450 °C to produce M-PCP.

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Recent insights in synthesis and energy storage applications of porous

Among the development of various materials, carbon materials have gained great interest and present promising potential in the fields of environmental remediation, energy storage, and green preparation [[15], [16], [17]] the last decade, new carbon materials such as graphene, carbon quantum dots, carbon nanotubes and carbon nanospheres have been

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Porous carbon nanosheets from coal tar pitch for zinc ion hybrid

The preparation process of PCNSs can be found in the Fig. 1a. First, as the temperature rises, the coal tar pitch melted and coated the mixture of KHCO 3 and KHC 2 O 4.Then, KHCO 3 and KHC 2 O 4 began to decompose and react with the carbon matrix to activate it and make pores. The decomposed reactions of KHCO 3 and KHC 2 O 4 are as follow: 2KHC

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Carbon dioxide storage within coal reservoirs: A comprehensive

CO 2 capture in coal bed methane (CBM) operations refers to the process of capturing CO 2 that is co-produced or released during the extraction of methane from coal seams. This dual operation, often called "enhanced CBM recovery" involves extracting methane for energy production while simultaneously capturing and storing CO 2.The production and

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Coal Matrix Deformation and Pore Structure Change in High

Coal matrix deformation is one of the main controlling factors for coal reservoir permeability changes in nitrogen foam fracturing. The characteristics and mechanism of coal matrix deformation during the process of adsorption/desorption were studied by isothermal adsorption/desorption experiments with methane and nitrogen. Based on the free-energy

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Preparation of porous carbon materials from biomass pyrolysis vapors

Hydrogen energy is considered as a promising sustainable resource under the increasingly tense situation of energy and environment [1].However, there are some key problems restrict the further progress of hydrogen energy, especially the challenge of hydrogen storage [2], [3] recent years, plenty of efforts have been devoted to the research of hydrogen storage

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About Porous energy storage in coal matrix

About Porous energy storage in coal matrix

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