Iron oxide@graphitic carbon core-shell nanoparticles embedded in ordered mesoporous N-doped carbon matrix as an efficient cathode catalyst for PEMFC

催化作用 纳米颗粒 介孔材料 质子交换膜燃料电池 材料科学 碳纤维 化学工程 氧化物 甲醇 阴极 纳米技术 化学 复合材料 冶金 有机化学 物理化学 工程类 复合数
作者
Kun Wang,Haixin Chen,Xiaofeng Zhang,Yexiang Tong,Shuqin Song,Panagiotis Tsiakaras,Yi Wang
出处
期刊:Applied Catalysis B-environmental [Elsevier BV]
卷期号:264: 118468-118468 被引量:77
标识
DOI:10.1016/j.apcatb.2019.118468
摘要

Developing electrocatalysts with high activity and long-term stability towards oxygen reduction reaction (ORR) in acidic media is still an important topic. However, most of the already reported non-precious-metal catalysts (NPMCs) for ORR exhibit excellent performance in basic media. In the present work, we report a newly designed FeOx@graphitic carbon core-shell structured nanoparticles implanted in N-doped carbon matrix, with ordered and mesoporous structure (FeOx@GC-NOMC), which i) exhibits a better electrocatalytic activity in acidic media, ii) follows a four-electron ORR process, and iii) shows superior stability and inertness to methanol when compared with commercial Pt/C (20 wt %). These features are mostly attributed to the following two points: i) the ordered mesoporous carbon matrix can not only be favorable for the rapid transfer and active sites exposure, but also limit the embedded nanoparticles size and avoid its agglomeration, and ii) the high content of "Fe-N" active sites, and the core-shell structure of embedded nanoparticles (FeOx@GC) can protect the active sites from the corrosion of harsh conditions and ensure the long-term durability. It is found that the as-prepared FeOx@GC-NOMC shows one of the best H2-O2 PEMFC single-cell performances, among all thetested and currently reported NPMCs, as well as a long-term durability. More precisely, at an open circuit potential of ca. 1 V, the peak power density reaches up to 350 W g−1 (1050 mW cm-2 based on active area). A slight current decay is observed after a chronoamperometric test of 120 h. The above features make FeOx@GC-NOMC a promising potential alternative to Pt/C for ORR electrocatalysis in practical fuel cell applications.
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
量子星尘发布了新的文献求助10
1秒前
1秒前
1秒前
33关闭了33文献求助
1秒前
ZZD完成签到 ,获得积分10
1秒前
LW发布了新的文献求助20
1秒前
鲜于飞薇发布了新的文献求助10
1秒前
1秒前
2秒前
SciGPT应助HANK2024采纳,获得10
2秒前
3秒前
研究生发布了新的文献求助10
3秒前
4秒前
4秒前
研友_VZG7GZ应助荷兰香猪采纳,获得10
4秒前
研友_VZG7GZ应助gaterina采纳,获得10
5秒前
万能图书馆应助Dominic采纳,获得10
5秒前
5秒前
ygtrece完成签到,获得积分10
5秒前
SciGPT应助哦耶zyy采纳,获得10
5秒前
ding应助汤飞柏采纳,获得10
5秒前
wade发布了新的文献求助10
6秒前
三新荞发布了新的文献求助10
6秒前
6秒前
专注的白柏完成签到,获得积分10
6秒前
standing发布了新的文献求助10
7秒前
7秒前
8秒前
8秒前
8秒前
徐峰桥发布了新的文献求助10
8秒前
寒冷手链发布了新的文献求助10
8秒前
8秒前
Lucas应助久久久悦采纳,获得10
8秒前
hi发布了新的文献求助10
9秒前
9秒前
10秒前
11秒前
12秒前
djiwisksk66应助凄惨惨戚采纳,获得10
12秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
A Preliminary Study on Correlation Between Independent Components of Facial Thermal Images and Subjective Assessment of Chronic Stress 500
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 360
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 3971125
求助须知:如何正确求助?哪些是违规求助? 3515824
关于积分的说明 11179811
捐赠科研通 3250971
什么是DOI,文献DOI怎么找? 1795610
邀请新用户注册赠送积分活动 875897
科研通“疑难数据库(出版商)”最低求助积分说明 805207