共 58 条
Solar-to-hydrogen efficiency exceeding 2.5% achieved for overall water splitting with an all earth-abundant dual-photoelectrode
被引:96
作者:
Ding, Chunmei
Qin, Wei
Wang, Nan
Liu, Guiji
Wang, Zhiliang
Yan, Pengli
Shi, Jingying
[1
]
Li, Can
机构:
[1] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
基金:
中国国家自然科学基金;
关键词:
TA3N5 NANOROD ARRAYS;
VISIBLE-LIGHT;
PHOTOANODES;
OXIDATION;
CELLS;
CATALYST;
DRIVEN;
OPTIMIZATION;
ELECTRODES;
DEVICE;
D O I:
10.1039/c4cp02391a
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
The solar-to-hydrogen (STH) efficiency of a traditional mono-photoelectrode photoelectrochemical water splitting system has long been limited as large external bias is required. Herein, overall water splitting with STH efficiency exceeding 2.5% was achieved using a self-biased photoelectrochemical-photovoltaic coupled system consisting of an all earth-abundant photoanode and a Si-solar-cell-based photocathode connected in series under parallel illumination. We found that parallel irradiation mode shows higher efficiency than tandem illumination especially for photoanodes with a wide light absorption range, probably as the driving force for water splitting reaction is larger and the photovoltage loss is smaller in the former. This work essentially takes advantage of a tandem solar cell which can enhance the solar-to-electricity efficiency from another point of view.
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页码:15608 / 15614
页数:7
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