Electrochemical Oxidation of Ammonia over Rare Earth Oxide Modified Platinum Catalysts

催化作用 化学 电化学 电催化剂 无机化学 氧化物 铂金 阳极 水溶液 离子交换 电极 离子 有机化学 物理化学
作者
Yu Katayama,Takeou Okanishi,Hiroki Muroyama,Toshiaki Matsui,Koichi Eguchi
出处
期刊:Journal of Physical Chemistry C [American Chemical Society]
卷期号:119 (17): 9134-9141 被引量:69
标识
DOI:10.1021/acs.jpcc.5b01710
摘要

The recent development of anion exchange membranes (AEMs) has increased the potential and the importance of ammonia as a fuel for anion exchange membrane fuel cells (AEMFCs). Although electrocatalysts for ammonia oxidation using Pt-based alloy catalysts have been developed recently, no obvious activity enhancement was reported. In this paper, the electrocatalytic activity of rare earth oxide (RO: CeO2, Y2O3, La2O3, and Sm2O3) modified Pt catalysts for ammonia oxidation reaction was investigated in alkaline aqueous solutions. The ammonia oxidation activity was enhanced in accordance with the amount of OHad species on the electrode surface. From various electrochemical measurements, it was revealed that the RO additive improved the supply capacity of OHad to the reactive Pt sites. Among the catalysts studied, the CeO2-modified Pt electrocatalyst exhibited the highest activity; the peak current density for ammonia oxidation was 3.5 times higher than that of the Pt catalyst. Furthermore, this activity enhancement was also observed at 60 °C. These results indicate that the addition of RO is one of the promising ways to design the high performance anode for direct ammonia AEMFCs.
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
鸭梨完成签到 ,获得积分10
刚刚
Orange应助火星上友易采纳,获得10
1秒前
1秒前
1秒前
2秒前
慕青应助清脆的书桃采纳,获得10
2秒前
李爱国应助Bili采纳,获得10
2秒前
Jamie完成签到,获得积分10
4秒前
4秒前
情怀应助摩西西采纳,获得10
5秒前
5秒前
自觉山柏发布了新的文献求助100
6秒前
烟花应助三胖采纳,获得10
6秒前
JANE完成签到,获得积分10
6秒前
7秒前
7秒前
8秒前
名金学南发布了新的文献求助10
8秒前
tp040900发布了新的文献求助10
9秒前
大模型应助火星上友易采纳,获得10
9秒前
科研通AI2S应助耿春丽采纳,获得10
9秒前
10秒前
10秒前
10秒前
11秒前
bkagyin应助逗逗采纳,获得10
11秒前
JANE发布了新的文献求助10
11秒前
阳光BOY发布了新的文献求助10
12秒前
shi发布了新的文献求助10
12秒前
12秒前
刘飞飞发布了新的文献求助10
13秒前
Leo发布了新的文献求助10
14秒前
摩西西完成签到,获得积分20
14秒前
yf发布了新的文献求助10
15秒前
15秒前
JamesPei应助阳光采纳,获得10
15秒前
em关注了科研通微信公众号
15秒前
16秒前
16秒前
英姑应助g123采纳,获得10
16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
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
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 3988827
求助须知:如何正确求助?哪些是违规求助? 3531197
关于积分的说明 11252739
捐赠科研通 3269830
什么是DOI,文献DOI怎么找? 1804815
邀请新用户注册赠送积分活动 881915
科研通“疑难数据库(出版商)”最低求助积分说明 809028