异质结
质子
半导体
材料科学
领域(数学)
凝聚态物理
金属
国家(计算机科学)
工程物理
物理
光电子学
量子力学
计算机科学
冶金
纯数学
数学
算法
作者
Yan Wu,Bin Zhu,Min Huang,L. Liu,Quan Shi,Muhammad Akbar,Chao Chen,Jie Wei,Jian‐Feng Li,Lirong Zheng,Jung‐Sik Kim,Huaibing Song
出处
期刊:Science
[American Association for the Advancement of Science]
日期:2020-07-09
卷期号:369 (6500): 184-188
被引量:47
标识
DOI:10.1126/science.aaz9139
摘要
Tuning a semiconductor to function as a fast proton conductor is an emerging strategy in the rapidly developing field of proton ceramic fuel cells (PCFCs). The key challenge for PCFC researchers is to formulate the proton-conducting electrolyte with conductivity above 0.1 siemens per centimeter at low temperatures (300 to 600°C). Here we present a methodology to design an enhanced proton conductor by means of a Na x CoO2/CeO2 semiconductor heterostructure, in which a field-induced metallic state at the interface accelerates proton transport. We developed a PCFC with an ionic conductivity of 0.30 siemens per centimeter and a power output of 1 watt per square centimeter at 520°C. Through our semiconductor heterostructure approach, our results provide insight into the proton transport mechanism, which may also improve ionic transport in other energy applications.
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