Wafer-scale development and experimental verification of 0.36 mm2228 mV open-circuit-voltage solid-state CMOS-compatible glucose fuel cell

Solid-state complementary metal oxide semiconductor (CMOS)-compatible glucose fuel cells, with single-walled carbon nanotube (SWCNT) films and different amounts of carbon nanotube (wt%) were investigated. Those with a SWCNT content of 3 wt% were found to develop the highest open circuit voltage (OCV) of 400 mV, together with a high electrical conductivity, a power density of 0.53 μW/cm2 and current density of 1.31 μA/cm2. Measurements were performed by dipping the anode into a 30 mM glucose solution. The OCV and power density increased together with the fuel cell concentration. The developed fuel cell uses materials that are biocompatible with the human body (single-walled carbon nanotube-glucose). As a result, it was possible to attain an OCV of 400 mV with a single-walled carbon nanotube content of 3 wt% while improvements in the performance of the CMOS-compatible glucose fuel cell were obtained, and the parameters affecting the performance of the fuel cell were identified. This bio-fuel cell was fabricated using CMOS semiconductor processes on a silicon wafer. These findings are significant to realizing mobile or implantable devices that can be used for biomedical applications.

Download Full-text

Investigating the Role of Dye Dipole on Open Circuit Voltage in Solid-State Dye-Sensitized Solar Cells

Japanese Journal of Applied Physics ◽

10.1143/jjap.50.06gf08 ◽

2011 ◽

Vol 50 (6) ◽

pp. 06GF08 ◽

Cited By ~ 2

Author(s):

Shyam S. Pandey ◽

Kyung-Young Lee ◽

Azwar Hayat ◽

Yuhei Ogomi ◽

Shuzi Hayase

Keyword(s):

Solar Cells ◽

Solid State ◽

Open Circuit Voltage ◽

Dye Sensitized Solar Cells ◽

Open Circuit ◽

Dye Sensitized ◽

Sensitized Solar Cells

Download Full-text

CdSe Quantum Dots Sensitized Mesoporous TiO2Solar Cells with CuSCN as Solid-State Electrolyte

Journal of Nanomaterials ◽

10.1155/2011/269591 ◽

2011 ◽

Vol 2011 ◽

pp. 1-5 ◽

Cited By ~ 4

Author(s):

Guanbi Chen ◽

Lei Wang ◽

Yu Zou ◽

Xia Sheng ◽

Hongjuan Liu ◽

...

Keyword(s):

Quantum Dots ◽

Solar Cells ◽

Solid State ◽

Barrier Layer ◽

Open Circuit Voltage ◽

Open Circuit ◽

Cdse Quantum Dots ◽

Solid State Electrolyte ◽

Capping Agents ◽

Organic Capping

Mesoporous TiO2is functionalized by 3-mercaptopropyl trimethyoxysilane (MPTMS) to anchor CdSe quantum dots (QDs). The resulting TiO2/CdSe is combined with solid-state electrolyte (CuSCN) to form solar cells. It is found that the efficiency of electron injection from QDs to TiO2can be improved owing to the substitution of the long chains of organic capping agents at the surface of QDs with MPTMS. The hydrolyzate of MPTMS forms an insulating barrier layer to reduce the recombination at the TiO2/CdSe interface, leading to the increase of open-circuit voltage (Voc).

Download Full-text

Preparation of Ce0.8Sm0.2O1.9 Thin Films by Electrophoretic Deposition and their Fuel Cell Performance

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.566.137 ◽

2013 ◽

Vol 566 ◽

pp. 137-140 ◽

Cited By ~ 2

Author(s):

Hiroki Ichiboshi ◽

Kenichi Myoujin ◽

Takayuki Kodera ◽

Takashi Ogihara

Keyword(s):

Thin Films ◽

Fuel Cell ◽

Spray Pyrolysis ◽

Power Density ◽

Electrophoretic Deposition ◽

Open Circuit Voltage ◽

Open Circuit ◽

Doped Ceria ◽

Maximum Power Density ◽

Fuel Cell Performance

Ce0.8Sm0.2O1.9 (Samaria-doped ceria: SDC) precursors were synthesized by carbon-assisted spray pyrolysis. SDC thin films were prepared by electrophoretic deposition using the SDC precursor particles. The as-prepared SDC thin films were sintered at 1600 °C for 10 h. Uniform films with a thickness of approximately 20 μm were obtained. A fuel cell using the prepared thin films showed a maximum power density of 60.6 mW/cm2 and an open circuit voltage (OCV) of 0.63 V at 700 °C.

Download Full-text

Effects of Gas Flow Rate and Catalyst Loading on Polymer Electrolyte Membrane (PEM) Fuel Cell Performance and Degradation

ASME 2010 8th International Fuel Cell Science, Engineering and Technology Conference: Volume 1 ◽

10.1115/fuelcell2010-33308 ◽

2010 ◽

Author(s):

A. Chukwujekwu Okafor ◽

Hector-Martins Mogbo

Keyword(s):

Fuel Cell ◽

Flow Rate ◽

Gas Flow ◽

Open Circuit Voltage ◽

Polymer Electrolyte Membrane ◽

Open Circuit ◽

Catalyst Loading ◽

Gas Flow Rate ◽

Flow Rates ◽

Electrolyte Membrane

In this paper, the effects of gas flow rates, and catalyst loading on polymer electrolyte membrane fuel cell (PEMFC) performance was investigated using a 50cm2 active area fuel cell fixture with serpentine flow field channels machined into poco graphite blocks. Membrane Electrode Assemblies (MEAs) with catalyst and gas flow rates at two levels each (0.5mg/cm2, 1mg/cm2; 0.3L/min, 0.5L/min respectively) were tested at 60°C without humidification. The cell performance was analyzed by taking AC Impedance, TAFEL plot, open circuit voltage, and area specific resistance measurements. It was observed that MEAs with lower gas flow rate had lesser cell resistance compared to MEAs with a higher gas flow rate. TAFEL plot shows the highest exchange current density value of −2.05 mAcm2 for MEA with 0.5mg/cm2 catalyst loading operated at reactant gas flow rate of 0.3L/min signifying it had the least activation loss and fastest reaction rate. Open circuit voltage curve shows a higher output voltage and lesser voltage decay rate for MEAs tested at higher gas flow rates.

Download Full-text

Determination of Electronic Conductance of 100 cm2 Single Molten Carbonate Fuel Cell

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.346.23 ◽

2013 ◽

Vol 346 ◽

pp. 23-28

Author(s):

Jarosław Milewski ◽

Wojciech Bujalski ◽

Marcin Wołowicz ◽

Kamil Futyma ◽

Jan Kucowski ◽

...

Keyword(s):

Fuel Cell ◽

Open Circuit Voltage ◽

Open Circuit ◽

Molten Carbonate Fuel Cell ◽

Molten Carbonate ◽

Factors Affecting ◽

Close Relationship ◽

Electronic Conductance ◽

Carbonate Fuel Cell

This work considers electronic conductance in a molten carbonate fuel cell and consequences of its existence. The voltage characteristics of cells show differences between a theoretical maximum circuit voltage and open circuit voltage (OCV). A relationship is assumed between the OCV value and electronic conductance. Based on experimental measurements an appropriate mathematical model was created. The model is used to calculate the temperature dependence of electronic conductance for the most popular types of electrolyte: Li2CO3/K2CO3. The results obtained point to the possible existence of a very close relationship between electronic conductance and open circuit voltage. This relationship enables OCV to be calculated when electronic conductance is known. Appropriate formulae can be determined. Temperature is one of the factors affecting electronic conductance. Other influencing factors do exist, but their impact on OCV is not well known. This article mentions some of them.

Download Full-text