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Preparation and property analysis of carbide slag mixed with carbonized corn fiber composite phase change thermal storage materials
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Meng LI1, Yaxuan XIONG1, Jing YAN2, Meichao YIN1, Yanan SU1, Yuting WU3, Yulong DING4
Thermal Power Generation | 2026, 55(2) : 1 - 12
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Thermal Power Generation | 2026, 55(2): 1-12
• Energy storage materials, devices, and systems •
Preparation and property analysis of carbide slag mixed with carbonized corn fiber composite phase change thermal storage materials
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Meng LI1, Yaxuan XIONG1, Jing YAN2, Meichao YIN1, Yanan SU1, Yuting WU3, Yulong DING4
Affiliations
  • 1.Beijing Key Lab of Heating, Gas Supply, Ventilating and Air Conditioning Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
  • 2.Beijing Tianyueheng Housing Management & Administration Co., Ltd., Beijing 100032, China
  • 3.Beijing Key Laboratory of Heat Transfer and Energy Conservation, Beijing University of Technology, Beijing 100124, China
  • 4.Birmingham Center for Energy Storage, University of Birmingham, Birmingham B15 2TT, UK
Published: 2026-02-25 doi: 10.19666/j.rlfd.202507130
Outline
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[Objective]

To fully dig the enormous potential of carbide slag and corn cob in resource utilization, thus to meet the demands of colid waste recycling and low-carbon energy storage.

[Methods]

A novel composite phasechange thermal energy storage material was prepared using industrial solid waste carbide slag and agricultural solid waste carbonized corn fiber as the binary skeleton material, and with paraffin as the phase-change medium. The composites were synthesized via vacuum impregnation, and process parameters were optimized.

[Results]

The results showed that the material exhibited optimal encapsulation performance at a carbide slag-to-carbonized corn fiber mass ratio of 5:5, maintaining structural stability after 600 thermal cycles. The optimal sample SC-5 achieved melting and solidification latent heats of 34.90 and 36.35 J/g, respectively, with a thermal conductivity of 0.484 W/(m·K), indicating good thermal stability and chemical compatibility. Microstructural analysis revealed that the skeleton materials formed a dense microporous structure, effectively mitigating paraffin leakage. Post-cycling material analysis indicated no new chemical bonds and maintained elemental homogeneity.

[Conclusion]

This work provides a novel pathway for synergistic valorization of industrial and agricultural solid wastes, demonstrating significant application potential in building energy conservation, industrial waste heat recovery, and thermal management of electronics.

carbide slag  /  carbonized corn fiber  /  composite phase change thermal storage material  /  thermal property  /  chemical compatibility
Meng LI, Yaxuan XIONG, Jing YAN, Meichao YIN, Yanan SU, Yuting WU, Yulong DING. Preparation and property analysis of carbide slag mixed with carbonized corn fiber composite phase change thermal storage materials[J]. Thermal Power Generation, 2026 , 55 (2) : 1 -12 . DOI: 10.19666/j.rlfd.202507130
Funding
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  • National Key Research and Development Program(2022YFB2405202)
  • Science and Technology General Project of Beijing Municipal Education Commission(KM202210005016)
Appendix
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Year 2026 volume 55 Issue 2
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224
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Article Info
doi: 10.19666/j.rlfd.202507130
  • Receive Date：2025-07-09
  • Online Date：2026-08-14
  • Published：2026-02-25
Article Data
Affiliations
History
  • Received：2025-07-09
  • Revised：2025-08-22
  • Accepted：2025-09-01
Funding
National Key Research and Development Program(2022YFB2405202)
Science and Technology General Project of Beijing Municipal Education Commission(KM202210005016)
Affiliations
    1.Beijing Key Lab of Heating, Gas Supply, Ventilating and Air Conditioning Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
    2.Beijing Tianyueheng Housing Management & Administration Co., Ltd., Beijing 100032, China
    3.Beijing Key Laboratory of Heat Transfer and Energy Conservation, Beijing University of Technology, Beijing 100124, China
    4.Birmingham Center for Energy Storage, University of Birmingham, Birmingham B15 2TT, UK
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202507130
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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