Protonic ceramic electrochemical cells for hydrogen production and electricity generation: exceptional reversibility, stability, and demonstrated faradaic efficiency

2019 ◽  
Vol 12 (1) ◽  
pp. 206-215 ◽  
Author(s):  
Sihyuk Choi ◽  
Timothy C. Davenport ◽  
Sossina M. Haile
Keyword(s):  
Hydrogen Production ◽  
High Activity ◽  
Electricity Generation ◽  
Electrochemical Cell ◽  
Perovskite Oxide ◽  
Electrochemical Cells ◽  
Excellent Performance ◽  
Faradaic Efficiency ◽  
Air Electrode

We demonstrate excellent performance and durability at intermediate temperatures (500–650 °C) upon reversible operation of an electrochemical cell incorporating a proton-permeable, high-activity mixed conducting oxide as the air electrode, a highly proton-conductive and chemically stable perovskite oxide as the electrolyte, and a composite of Ni and the electrolyte as the fuel electrode.

Carbon- and binder-free 3D porous perovskite oxide air electrode for rechargeable lithium–oxygen batteries

2017 ◽  
Vol 5 (11) ◽  
pp. 5283-5289 ◽  
Author(s):  
Thien Viet Pham ◽  
Hai Peng Guo ◽  
Wen Bin Luo ◽  
Shu Lei Chou ◽  
Jia Zhao Wang ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Lattice Strain ◽  
Perovskite Oxide ◽  
Excellent Performance ◽  
Air Electrode ◽  
Binder Free ◽  
Lithium Oxygen Batteries

Porous LaNi0.9Cu0.1O3 nanosheets exhibit excellent performance in Li–O2 batteries because of abundant lattice strain and the oxygen vacancy effect.

scholarly journals Advanced oxygen-electrode-supported solid oxide electrochemical cells with Sr(Ti,Fe)O3−δ-based fuel electrodes for electricity generation and hydrogen production

2020 ◽  
Vol 8 (48) ◽  
pp. 25867-25879
Author(s):  
Shan-Lin Zhang ◽  
Hongqian Wang ◽  
Tianrang Yang ◽  
Matthew Y. Lu ◽  
Cheng-Xin Li ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Electricity Generation ◽  
High Performance ◽  
Oxygen Electrode ◽  
Solid Oxide ◽  
Electrochemical Cells ◽  
Catalytic Nanoparticles

Sr(Ti0.3Fe0.7)O3−δ (STF)-based fuel electrodes enhanced by the exsolution of catalytic nanoparticles were applied to the high-performance oxygen electrode-supported SOCs (OESCs).

A self-supported Ni–Co perselenide nanorod array as a high-activity bifunctional electrode for a hydrogen-producing hydrazine fuel cell

2018 ◽  
Vol 6 (36) ◽  
pp. 17763-17770 ◽  
Author(s):  
Genxiang Wang ◽  
Junxiang Chen ◽  
Pingwei Cai ◽  
Jingchun Jia ◽  
Zhenhai Wen
Keyword(s):  
Fuel Cell ◽  
Hydrogen Production ◽  
High Activity ◽  
Electricity Generation ◽  
Nanorod Array ◽  
Supported Ni

Simultaneous hydrogen production and electricity generation was achieved in a hybrid hydrazine fuel cell assisted by the electrochemical neutralization energy.

Photo-Current Enhancement at Cu/p-Cu2O/rGO- Electrolyte Interface

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
S.P.A.U.K. Samarakoon ◽  
C.A.N. Fernando
Keyword(s):  
Diffuse Reflectance ◽  
Electrochemical Cell ◽  
Time Development ◽  
Charge Carriers ◽  
Electrochemical Cells ◽  
Current Action ◽  
Electrolyte Interface ◽  
Reduced Graphene ◽  
Efficient Charge ◽  
Photo Current

A considerable photo-current enhancement was found at the Cu/p-Cu2O/rGO-electrolyte interface in a photo-electrochemical cell with compared to that of Cu/p-Cu2O-electrolyte interface. The reason for the photo-current enhancement may be due to the efficient charge separation process provided at Cu/p-Cu2O/rGO-electrolyte interface. Here rGO (reduced graphene oxide) acts as an electron acceptor for the photo-generated charge carriers as it readily accept electrons from the conduction band of p-Cu2O. rGO was synthesized using electro-phoretic deposition (EPD) technique. Fabricated samples were characterized using diffuse reflectance spectra, photo-current action spectra and the time development of the photocurrent of photo-electrochemical cells.

Porous and amorphous cobalt hydroxysulfide core–shell nanoneedles on Ti-mesh as a bifunctional electrocatalyst for energy-efficient hydrogen production via urea electrolysis

2021 ◽  
Author(s):  
Yu Jiang ◽  
Shanshan Gao ◽  
Gongchen Xu ◽  
Xiaoming Song
Keyword(s):  
Hydrogen Production ◽  
High Activity ◽  
Energy Efficient ◽  
Bifunctional Catalyst ◽  
Core Shell ◽  
Bifunctional Electrocatalyst ◽  
Urea Electrolysis ◽  
Ti Mesh

Porous and amorphous CoSx(OH)y core–shell nanoneedles covered by numerous ultra-thin small nanosheets are synthesized successfully on Ti-mesh, and act as a high activity and stability bifunctional catalyst for urea electrolysis.

An Efficient Bifunctional Air Electrode for Reversible Protonic Ceramic Electrochemical Cells

2021 ◽  
pp. 2105386
Author(s):  
Yucun Zhou ◽  
Weilin Zhang ◽  
Nicholas Kane ◽  
Zheyu Luo ◽  
Kai Pei ◽  
...  
Keyword(s):  
Electrochemical Cells ◽  
Air Electrode ◽  
Bifunctional Air Electrode

Development of Chalcogenide Thin Film Materials for Photoelectrochemical Hydrogen Production

2013 ◽  
Vol 1558 ◽  
Author(s):  
Nicolas Gaillard ◽  
Dixit Prasher ◽  
Jess Kaneshiro ◽  
Stewart Mallory ◽  
Marina Chong
Keyword(s):  
Thin Film ◽  
Hydrogen Production ◽  
Counter Electrode ◽  
Present Communication ◽  
Microstructural Characteristics ◽  
Faradaic Efficiency ◽  
Si Solar Cells ◽  
Copper Gallium Diselenide ◽  
Photoelectrochemical Hydrogen Production ◽  
Chalcogenide Thin Film

ABSTRACTIn the present communication, we report our efforts to integrate chalcogenide-based photoelectrochemical (PEC) materials into a standalone device capable of water-splitting using sunlight as the only source of energy. More specifically, the PEC performances of copper gallium diselenide are presented. First, a brief introduction to the material microstructural characteristics is presented. Then, the PEC properties are discussed, including incident-photonto-current efficiency (>60% in the visible), Faradaic efficiency (uncatalyzed, 86%) and durability (400 hours). Finally, we report the solar-to-hydrogen benchmark efficiency (3.7%) of a device made of a CuGaSe2 photocathode and a-Si solar cells measured in a 2-electrode configuration using a RuO2 counter electrode.

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