High surface area microporous carbon materials for cryogenic hydrogen storage synthesized using new template-based and activation-based approaches

Correction for ‘Cigarette butt-derived carbons have ultra-high surface area and unprecedented hydrogen storage capacity’ by L. Scott Blankenship et al., Energy Environ. Sci., 2017, 10, 2552–2562, DOI: 10.1039/C7EE02616A.

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Dopamine Assisted One-Step Pyrolysis of Glucose for the Preparation of Porous Carbon with A High Surface Area

Nanomaterials ◽

10.3390/nano8100854 ◽

2018 ◽

Vol 8 (10) ◽

pp. 854 ◽

Cited By ~ 2

Author(s):

Hanbo Xiao ◽

Cheng-an Tao ◽

Yujiao Li ◽

Xianzhe Chen ◽

Jian Huang ◽

...

Keyword(s):

Surface Area ◽

Porous Carbon ◽

Carbon Materials ◽

High Current Density ◽

High Surface ◽

High Surface Area ◽

Energy Storage Materials ◽

One Pot ◽

Component Structure ◽

Porous Carbon Materials

Herein, a facile dopamine assisted one-pot synthesis approach is proposed for the preparation of porous carbon with a specific surface area (SSA) up to 2593 m2/g through the direct pyrolysis of a mixture of glucose, NH4Cl, and dopamine hydrochloride (DAH). The glucose is adopted as the carbon source and foaming agent, NH4Cl is used as the blowing agent, and DAH is served as collaborative carbon precursor as well as the nitrogen source for the first time. The effect of dopamine on the component, structure, and SSA of the as-prepared porous carbon materials are systematically studied. The moderate addition of dopamine, which influences the condensation and polymerization of glucose, matches better with ammonium salt decomposition. The SSA of porous carbon increases first and then decreases with the increasing amount of dopamine. In our case, the porous carbon produced with 5 wt% dopamine (PC-5) achieves the maximum SSA of up to 2593 m2/g. Accordingly, it also shows the greatest electrochemical performance. The PC-5 shows a capacitance of 96.7 F/g calculated from the discharge curve at 1 A/g. It also has a good capacitive rate capacity, the specific capacitance can still maintain 80%, even at a high current density of 10 A/g. Moreover, PC-5 exhibits a good cycling stability of 98.1% capacitive retention after 1000 cycles. The proposed method may show promising prospects for preparing porous carbon materials as advanced energy storage materials, storage, and catalyst supports.

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Structural Flexibility in Activated Carbon Materials Prepared under Harsh Activation Conditions

Materials ◽

10.3390/ma12121988 ◽

2019 ◽

Vol 12 (12) ◽

pp. 1988 ◽

Cited By ~ 4

Author(s):

Fabiano Gomes Ferreira de Paula ◽

Ignacio Campello-Gómez ◽

Paulo Fernando Ribeiro Ortega ◽

Francisco Rodríguez-Reinoso ◽

Manuel Martínez-Escandell ◽

...

Keyword(s):

Activated Carbon ◽

Surface Area ◽

Structural Changes ◽

Organic Molecules ◽

Carbon Materials ◽

High Surface ◽

High Surface Area ◽

Koh Activation ◽

3D Network ◽

Activation Conditions

Although traditionally high-surface area carbon materials have been considered as rigid structures with a disordered three dimensional (3D) network of graphite microdomains associated with a limited electrical conductivity (highly depending on the porous structure and surface chemistry), here we show for the first time that this is not the case for activated carbon materials prepared using harsh activation conditions (e.g., KOH activation). In these specific samples a clear structural re-orientation can be observed upon adsorption of different organic molecules, the structural changes giving rise to important changes in the electrical resistivity of the material. Whereas short chain hydrocarbons and their derivatives give rise to an increased resistivity, the contrary occurs for longer-chain hydrocarbons and/or alcohols. The high sensitivity of these high-surface area carbon materials towards these organic molecules opens the gate towards their application for sensing devices.

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Investigation of Polyaniline Nanocomposites and Cross-Linked Polyaniline for Hydrogen Storage

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.445.571 ◽

2012 ◽

Vol 445 ◽

pp. 571-576 ◽

Cited By ~ 4

Author(s):

Dervis E. Demirocak ◽

Sarada Kuravi ◽

Manoj K. Ram ◽

Chand K. Jotshi ◽

Sesha Srinivasan ◽

...

Keyword(s):

Hydrogen Storage ◽

Surface Area ◽

Storage Capacity ◽

Storage System ◽

High Surface ◽

High Surface Area ◽

Hydrogen Sorption ◽

Commercial Application ◽

Storage Mechanism ◽

Hydrogen Storage System

One of the biggest challenges for the commercial application of existing hydrogen storage materials is to meet the desired high volumetric and gravimetric hydrogen storage capacity and the ability to refuel quickly and repetitively as a safe transportation system at moderate temperature and pressure. In this work, we have synthesized polyaniline nanocomposites (PANI-NC) and hypercrosslinked polyaniline (PANI-HYP) materials to provide structure and composition which could meet the specific demands of a practical hydrogen storage system. Hydrogen sorption measurements showed that high surface area porous structure enhanced the storage capacity significantly at 77.3K and 1atm (i.e., 0.8wt% for PANI-HYP). However at 298K, storage capacity of all samples is less than 0.5wt% at 70 bar. Hydrogen sorption results along with the surface area measurements confirmed that hydrogen storage mechanism predominantly based on physisorption for polyaniline.

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