|
个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：Director, State Key laboratory of Fine Chemicals
其他任职：精细化工国家重点实验室主任、国务院学科评议组成员
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：化工学院
学科：应用化学. 精细化工. 化学生物学
办公地点：大连理工大学精细化工国家重点实验室
西部校区化工实验楼F-202#
http://peng-group.dlut.edu.cn/
联系方式：大连理工大学精细化工国家重点实验室 西部校区化工实验楼F-202 辽宁省大连市高新区凌工路2号，大连116024 Tel: 0411-84986306; Fax: 0411-84986292；课题组网址：http://peng-group.dlut.edu.cn/
电子邮箱：pengxj@dlut.edu.cn
Nitrogen-doped porous carbons with high performance for hydrogen storage
点击次数：
论文类型：期刊论文
发表时间：2016-06-01
发表刊物：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
收录刊物：SCIE
卷号：41
期号：20
页面范围：8489-8497
ISSN号：0360-3199
关键字：Hydrochar materials; KOH activation; Porous carbons; Nitrogen-doped; Hydrogen storage
摘要：Hydrothermally carbonized chitosan has been successfully used as a carbon source for the preparation of highly porous carbons via chemical activation. The porous carbons with different nitrogen contents (0.56-6.53 wt%) have high surface area (1362-3009 m(2) g(-1)) and large pore volume (0.670-1.497 cm(3) g(-1)). These properties can be varied from modifying the activation parameters (i.e., amount of activation agent and activation temperature). We observed hydrogen storage capacity of up to 2.71 wt% at 77 K and 1 bar, and 6.77 wt% at 20 bar, for PC-2-800 porous carbons. This result indicates that the hydrogen uptake of porous carbons mainly depends on the high micropore surface area related to optimum pore size. Furthermore, one found that high N-doping is beneficial for hydrogen storage at low pressure but it is detrimental at high pressure according to the analysis of hydrogen uptake isotherms. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.