Fully solar-powered photoelectrochemical conversion for simultaneous energy storage and chemical sensing

Yongcheng Wang; Jing Tang; Zheng Peng; Yuhang Wang; Dingsi Jia; Biao Kong; Ahmed A. Elzatahry; Dongyuan Zhao; Gengfeng Zheng

doi:10.1021/nl5014579

Fully solar-powered photoelectrochemical conversion for simultaneous energy storage and chemical sensing

Yongcheng Wang, Jing Tang, Zheng Peng, Yuhang Wang, Dingsi Jia, Biao Kong, Ahmed A. Elzatahry, Dongyuan Zhao, Gengfeng Zheng

Research output: Contribution to journal › Article › Research › peer-review

67 Citations (Scopus)

Abstract

We report the development of a multifunctional, solar-powered photoelectrochemical (PEC)–pseudocapacitive–sensing material system for simultaneous solar energy conversion, electrochemical energy storage, and chemical detection. The TiO2 nanowire/NiO nanoflakes and the Si nanowire/Pt nanoparticle composites are used as photoanodes and photocathodes, respectively. A stable open-circuit voltage of ∼0.45 V and a high pseudocapacitance of up to ∼455 F g–1 are obtained, which also exhibit a repeating charging–discharging capability. The PEC–pseudocapacitive device is fully solar powered, without the need of any external power supply. Moreover, this TiO2 nanowire/NiO nanoflake composite photoanode exhibits excellent glucose sensitivity and selectivity. Under the sun light illumination, the PEC photocurrent shows a sensitive increase upon different glucose additions. Meanwhile in the dark, the open-circuit voltage of the charged pseudocapacitor also exhibits a corresponding signal over glucose analyte, thus serving as a full solar-powered energy conversion–storage–utilization system.

Original language	English
Pages (from-to)	3668-3673
Number of pages	6
Journal	Nano Letters
Volume	14
Issue number	6
DOIs	https://doi.org/10.1021/nl5014579
Publication status	Published - 11 Jun 2014
Externally published	Yes

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10.1021/nl5014579

Cite this

@article{072fa811cf124b74a769cbe1eaf154ba,

title = "Fully solar-powered photoelectrochemical conversion for simultaneous energy storage and chemical sensing",

abstract = "We report the development of a multifunctional, solar-powered photoelectrochemical (PEC)–pseudocapacitive–sensing material system for simultaneous solar energy conversion, electrochemical energy storage, and chemical detection. The TiO2 nanowire/NiO nanoflakes and the Si nanowire/Pt nanoparticle composites are used as photoanodes and photocathodes, respectively. A stable open-circuit voltage of ∼0.45 V and a high pseudocapacitance of up to ∼455 F g–1 are obtained, which also exhibit a repeating charging–discharging capability. The PEC–pseudocapacitive device is fully solar powered, without the need of any external power supply. Moreover, this TiO2 nanowire/NiO nanoflake composite photoanode exhibits excellent glucose sensitivity and selectivity. Under the sun light illumination, the PEC photocurrent shows a sensitive increase upon different glucose additions. Meanwhile in the dark, the open-circuit voltage of the charged pseudocapacitor also exhibits a corresponding signal over glucose analyte, thus serving as a full solar-powered energy conversion–storage–utilization system.",

author = "Yongcheng Wang and Jing Tang and Zheng Peng and Yuhang Wang and Dingsi Jia and Biao Kong and Elzatahry, {Ahmed A.} and Dongyuan Zhao and Gengfeng Zheng",

year = "2014",

month = jun,

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doi = "10.1021/nl5014579",

language = "English",

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pages = "3668--3673",

journal = "Nano Letters",

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T1 - Fully solar-powered photoelectrochemical conversion for simultaneous energy storage and chemical sensing

AU - Wang, Yongcheng

AU - Tang, Jing

AU - Peng, Zheng

AU - Wang, Yuhang

AU - Jia, Dingsi

AU - Kong, Biao

AU - Elzatahry, Ahmed A.

AU - Zhao, Dongyuan

AU - Zheng, Gengfeng

PY - 2014/6/11

Y1 - 2014/6/11

N2 - We report the development of a multifunctional, solar-powered photoelectrochemical (PEC)–pseudocapacitive–sensing material system for simultaneous solar energy conversion, electrochemical energy storage, and chemical detection. The TiO2 nanowire/NiO nanoflakes and the Si nanowire/Pt nanoparticle composites are used as photoanodes and photocathodes, respectively. A stable open-circuit voltage of ∼0.45 V and a high pseudocapacitance of up to ∼455 F g–1 are obtained, which also exhibit a repeating charging–discharging capability. The PEC–pseudocapacitive device is fully solar powered, without the need of any external power supply. Moreover, this TiO2 nanowire/NiO nanoflake composite photoanode exhibits excellent glucose sensitivity and selectivity. Under the sun light illumination, the PEC photocurrent shows a sensitive increase upon different glucose additions. Meanwhile in the dark, the open-circuit voltage of the charged pseudocapacitor also exhibits a corresponding signal over glucose analyte, thus serving as a full solar-powered energy conversion–storage–utilization system.

AB - We report the development of a multifunctional, solar-powered photoelectrochemical (PEC)–pseudocapacitive–sensing material system for simultaneous solar energy conversion, electrochemical energy storage, and chemical detection. The TiO2 nanowire/NiO nanoflakes and the Si nanowire/Pt nanoparticle composites are used as photoanodes and photocathodes, respectively. A stable open-circuit voltage of ∼0.45 V and a high pseudocapacitance of up to ∼455 F g–1 are obtained, which also exhibit a repeating charging–discharging capability. The PEC–pseudocapacitive device is fully solar powered, without the need of any external power supply. Moreover, this TiO2 nanowire/NiO nanoflake composite photoanode exhibits excellent glucose sensitivity and selectivity. Under the sun light illumination, the PEC photocurrent shows a sensitive increase upon different glucose additions. Meanwhile in the dark, the open-circuit voltage of the charged pseudocapacitor also exhibits a corresponding signal over glucose analyte, thus serving as a full solar-powered energy conversion–storage–utilization system.

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EP - 3673

JO - Nano Letters

JF - Nano Letters

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