亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Highly proton conductive porous membranes based on polybenzimidazole/ lignin blends for high temperatures proton exchange membranes: Preparation, characterization and morphology- proton conductivity relationship

质子 质子交换膜燃料电池 电导率 形态学(生物学) 化学工程 多孔性 材料科学 表征(材料科学) 导电体 木质素 质子输运 电阻率和电导率 化学 复合材料 纳米技术 有机化学 物理化学 工程类 物理 生物 量子力学 生物化学 遗传学
作者
Sara Barati,Mahdi Abdollahi,Behnam Khoshandam,Mohsen Mehdipourghazi
出处
期刊:International Journal of Hydrogen Energy [Elsevier BV]
卷期号:43 (42): 19681-19690 被引量:37
标识
DOI:10.1016/j.ijhydene.2018.08.191
摘要

A new porous blend membranes based on polybenzimidazole (PBI) and lignin as a renewable material were prepared and structurally characterized by FT-IR for use in high temperature proton exchange membrane fuel cells (HT-PEMFCs). LiCl salt was used as a porogen to create micro-void in the membranes. The effect of presence of lignin and LiCl salt in the PBI on the structure of the membrane was investigated using scanning electron microscopy (SEM) analysis. Impedance spectroscopic (IS) technique was utilized to evaluate proton conductivity of the membranes at different temperatures. Through combining the SEM and IS results, a relationship between proton conductivity and the morphology of the membranes was established. The results showed that by increasing the content of lignin (0–20 wt%) in the membrane, phosphoric acid (PA) doping level increases from 4 to 26.8 and water uptake increases from 18 to 26.8 wt% because number and size of the pores formed in the membrane structure increase. The obtained results showed that increasing lignin content from 5 to 20 wt% results in increasing membrane proton conductivity from 14.6 to 69 mS/cm. This is the result of increasing doping level and decreasing the membrane resistance at ambient conditions (due to increasing numbers and diameters of micro-void in the membrane). The proton conductivities of PA-PBI/lignin membranes were also measured in a temperature range of 25–160 °C. Proton conductivity of membranes increased with temperature. Using the Arrhenius plot, the relationship between proton conductivity and temperature was investigated. At the evaluated range of temperatures, the proton conductivity of 5, 15, and 20 membranes increases 328%, 110%, and 120% compared to the ambient temperature, respectively. The highest proton conductivity was observed in sample PBI/lignin (20 wt%), to be 152 mS/cm at 160 °C.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
朴素的山蝶完成签到 ,获得积分10
5秒前
5秒前
FashionBoy应助科研通管家采纳,获得10
7秒前
Bugs完成签到,获得积分10
14秒前
19秒前
小八统治世界完成签到 ,获得积分10
20秒前
tang完成签到,获得积分10
39秒前
汉堡包应助舒服的觅夏采纳,获得10
51秒前
suicone完成签到,获得积分10
58秒前
zqq完成签到,获得积分0
1分钟前
1分钟前
归陌完成签到 ,获得积分10
1分钟前
1分钟前
mmyhn发布了新的文献求助10
1分钟前
1分钟前
Dave发布了新的文献求助10
1分钟前
2分钟前
科研通AI2S应助科研通管家采纳,获得10
2分钟前
2分钟前
wbs13521完成签到,获得积分0
2分钟前
3分钟前
儒雅致远发布了新的文献求助10
3分钟前
3分钟前
Hello应助儒雅致远采纳,获得10
3分钟前
正在获取昵称中...完成签到,获得积分10
3分钟前
3分钟前
爆米花应助xiongdi521采纳,获得10
3分钟前
3分钟前
xiongdi521发布了新的文献求助10
4分钟前
xiongdi521完成签到,获得积分10
4分钟前
mmyhn发布了新的文献求助10
4分钟前
4分钟前
4分钟前
Liiiiiiiiii发布了新的文献求助10
5分钟前
三水完成签到 ,获得积分20
5分钟前
小净完成签到 ,获得积分20
5分钟前
cccttt完成签到,获得积分10
5分钟前
mmyhn发布了新的文献求助10
5分钟前
Echo完成签到,获得积分10
5分钟前
无花果应助zzx采纳,获得10
5分钟前
高分求助中
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3990045
求助须知:如何正确求助?哪些是违规求助? 3532108
关于积分的说明 11256354
捐赠科研通 3270943
什么是DOI,文献DOI怎么找? 1805146
邀请新用户注册赠送积分活动 882270
科研通“疑难数据库(出版商)”最低求助积分说明 809228