Ordered porous carbon with tailored pore size for electrochemical hydrogen storage application

The Journal of Physical Chemistry. B
Baizeng FangItaru Honma

Abstract

Ordered porous carbon with tailored pore size represents an innovative concept in electrochemical hydrogen storage. This work deals with physical characteristics and electrochemical hydrogen storage behavior of the ordered porous carbons with well-tailored pore size, synthesized by a replica technique using hexagonal mesoporous silica as templates. By using a mixture of two surfactants (HTAB and C16EO8) at different ratios, it is possible to control the wall thickness of silica and, consequently, the pore diameter of carbons within a narrow range of 2.1-2.8 nm. In addition, highly developed ultramicroporosity (pore size smaller than 0.7 nm), which plays a predominant role in hydrogen storage, can be produced in the ordered porous carbons. A discharge capacity of up to 527 mAh/g (corresponding to 1.95 wt % hydrogen storage) has been achieved in 6 M KOH for the ordered porous carbon. Furthermore, the ordered porous carbons also possess excellent capacity retainability after charge-discharge cycles and rate capability.

References

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Citations

Oct 27, 2009·Journal of the American Chemical Society·Yongde XiaRobert Mokaya
Aug 10, 2006·Chemical Communications : Chem Comm·Shou-Heng LiuShang-Bin Liu
Feb 6, 2014·Advanced Materials·François BéguinElzbieta Frackowiak
May 16, 2008·Chemical Communications : Chem Comm·Annemieke W C van den Berg, Carlos Otero Areán
Sep 11, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Baizeng FangJong-Sung Yu
Nov 9, 2017·ACS Applied Materials & Interfaces·Lina ZhouDeyu Qu
Jan 18, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Jung-Min OhStephen E Creager
Jan 25, 2007·Journal of the American Chemical Society·Zhuxian YangRobert Mokaya

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