Volume 46, Issue 4 pp. 4965-4974
RESEARCH ARTICLE

Direct carbon solid oxide fuel cells powered by rice husk biochar

Weizi Cai

Weizi Cai

College of Engineering, South China Agricultural University, Guangzhou, China

Key Laboratory of Fuel Cell Technology of Guangdong Province, South China University of Technology, Guangzhou, China

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Xin Tong

Xin Tong

College of Engineering, South China Agricultural University, Guangzhou, China

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Xiaomin Yan

Xiaomin Yan

Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou, China

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Hualing Li

Hualing Li

Guangzhou Institute of Energy Testing, Guangzhou, China

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Yuzhi Li

Yuzhi Li

College of Engineering, South China Agricultural University, Guangzhou, China

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Xinyu Gao

Xinyu Gao

College of Engineering, South China Agricultural University, Guangzhou, China

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Yanning Guo

Yanning Guo

College of Engineering, South China Agricultural University, Guangzhou, China

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Weichuang Wu

Weichuang Wu

College of Engineering, South China Agricultural University, Guangzhou, China

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Daishuang Fu

Daishuang Fu

College of Engineering, South China Agricultural University, Guangzhou, China

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Xingkai Huang

Xingkai Huang

College of Engineering, South China Agricultural University, Guangzhou, China

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Jiang Liu

Jiang Liu

Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou, China

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Hailin Wang

Corresponding Author

Hailin Wang

College of Engineering, South China Agricultural University, Guangzhou, China

Correspondence

Hailin Wang, College of Engineering, South China Agricultural University, Guangzhou, 510640, China.

Email: [email protected]

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First published: 21 November 2021
Citations: 24

Funding information: Guangzhou Science and Technology Project, Grant/Award Number: 202102020685; National Natural Science Foundation of China, Grant/Award Numbers: 91745203, U1601207; Science and Technology planning project of Guangdong Province, Grant/Award Number: 2017B010122001; the Research Fund Program of Key Laboratory of Fuel Cell Technology of Guangdong Province, Grant/Award Number: None

Summary

The inefficient application of fossil energy is one of the fundamental factors leading to global warming. Bioenergy is a renewable energy and also a carbon-neutral energy, with advantages of extensive sources, diverse products, and environmental friendliness. Direct carbon solid oxide fuel cell (DC-SOFC) is a novel high-efficient bioenergy technology, which is able to directly convert the chemical energy of biochar into power. A biochar derived from rice husk is applied to power an electrolyte-supported DC-SOFC. The maximum power density of the cell with pure rice husk biochar is 135 mW cm−2 at 850°C, which enhances to 214 mW cm−2 after using a Boudouard reaction catalyst. The microstructures, components and thermochemical parameters of the biochar are characterized and analyzed. The results show that the microstructure of the rice husk biochar is rough and porous. Na, K, Mg, Al, and other elements are found to present in the biochar. The physicochemical properties of the biochar and the enhanced electrical output of the DC-SOFCs are demonstrated and discussed in detail.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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