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15 results on '"Xu, Zhaoxiang"'

5. Accelerated Discovery of CO2Solid Sorbents Using Active Machine Learning: Review and Perspectives

Author

Xu, Deyang, Yang, Jing, Xu, Zhaoxiang, Gu, Guo-yu-lin, Qiao, Fen, Wang, Junfeng, Li, Bin, Li, Chaoen, and Liu, Dongjing

Abstract

With the escalating severity of global climate change, the significance of carbon capture technology has become increasingly evident with respect to the aim of reaching carbon peak and carbon neutrality. Due to the exceptional selectivity, high adsorption capacity, and long-term stability, solid sorbents are regarded as crucial materials for effective CO2capture. Machine learning, as an emerging and crucial tool in artificial intelligence, has been adopted for the high-efficient screen of catalysts and sorbents in recent years. By analyzing available data on material properties, machine learning can greatly enhance the effectiveness and precision in identifying high-efficiency CO2sorbents. This work provides an overview of the latest advancements in the application of machine learning technology in CO2capture, which specifically focuses on CO2capture by sorbents. Several machine learning techniques and their applications in different types of CO2sorbents are fully summarized with concise comments, followed with conclusion and some challenges and perspectives. This review can serve as a guide for the development of carbon capture technology and facilitate the extensive utilization of machine learning technology in environmental protection.

Published
2024
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11. Converting biomass into efficient oxygen reduction reaction catalysts for proton exchange membrane fuel cells

Author

Xingdong Wang, Xuejiang Zhang, Jinjie Fang, Xuerui Liu, Wei Zhu, Zhongbin Zhuang, Xiangqian Zhang, Xu Zhaoxiang, and Qingqing Lv

Subjects
Materials science, Biomass, chemistry.chemical_element, Proton exchange membrane fuel cell, 02 engineering and technology, Electrolyte, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Hydrothermal circulation, 0104 chemical sciences, Catalysis, Membrane, Chemical engineering, chemistry, General Materials Science, 0210 nano-technology, Carbon, Pyrolysis
Abstract

It is urgent to develop low-cost but efficient oxygen reduction reaction (ORR) catalysts for the emerging clean energy devices of fuel cells based on proton exchange membrane. Herein, we report a facile method to covert the biomass of black fungus into an efficient ORR catalyst. The black fungus undergoes hydrothermal and pyrolysis processes to transform into carbon-based materials. The as-obtained BF-N-950 catalyst shows prominent ORR catalytic activities in both acidic and alkaline electrolytes with a half-wave potential reaching 0.77 and 0.91 V, respectively. A membrane electrolyte assembly was fabricated with the as-obtained BF-N-950 as the cathode catalyst which shows a high peak power density of 255 mW cm−2. The study shows the potential of converting conventional biomass into low-cost ORR catalyst, which is promising for the fuel cell technology.

Published
2019
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