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Synthesis of Iron Phosphate and Fe/P Carbon-Based Oxygen Reduction Catalyst for Efficient Recycling of Iron Phosphate Slag
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Huijie WANG1, Yilan WU2, Zhongyue JIA3, Xiangqun ZHUGE1, Kun LUO1
Mining and Metallurgical Engineering | 2026, 46(1) : 108 - 113
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Mining and Metallurgical Engineering | 2026, 46(1): 108-113
• METALLURGY •
Synthesis of Iron Phosphate and Fe/P Carbon-Based Oxygen Reduction Catalyst for Efficient Recycling of Iron Phosphate Slag
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Huijie WANG1, Yilan WU2, Zhongyue JIA3, Xiangqun ZHUGE1, Kun LUO1
Affiliations
  • 1.School of Materials Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu, China
  • 2.Zhejiang Dayou Industrial Co., Ltd., Hangzhou 310000, Zhejiang, China
  • 3.Changzhou Wisdom Robot Technology Co. Ltd., Changzhou 213125, Jiangsu, China
doi: 10.3969/j.issn.0253-6099.2026.01.018
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With iron phosphate slag as raw material, Fe and P elements were extracted by acid leaching, which was then used to synthesize battery-grade iron phosphate. Meanwhile, activated carbon and carbon nanotubes were introduced to adsorb the residual Fe and P elements in the leachate, and then high-performance Fe/P oxygen reduction catalysts (FP-6) were prepared by calcination. The results show that the FP-6 catalyst exhibits a half-wave potential of-0.037 V (vs. Hg/HgO) in 0.1 mol/L KOH solution, demonstrating excellent oxygen reduction catalytic activity. With FP-6 as the cathode catalyst, the zinc-air batteries can deliver a specific capacity of 780 mAh/g and a power density of 121 mW/cm2, and stably cycle for 182 h at a high current density of 5 mA/cm2. This study provides a low-cost and sustainable approach for efficient recycling of iron phosphate slag and resource utilization.

phosphorus iron slag  /  iron phosphate  /  Fe/P carbon-based catalyst  /  zinc-air battery  /  acid leaching
王慧洁, 吴一览, 贾中悦, 诸葛祥群, 罗鲲. 磷铁渣高效回收制备磷酸铁和Fe/P碳基氧还原催化剂的研究. 矿冶工程杂志, 2026 , 46 (1) : 108 -113 . DOI: 10.3969/j.issn.0253-6099.2026.01.018
Huijie WANG, Yilan WU, Zhongyue JIA, Xiangqun ZHUGE, Kun LUO. Synthesis of Iron Phosphate and Fe/P Carbon-Based Oxygen Reduction Catalyst for Efficient Recycling of Iron Phosphate Slag[J]. Mining and Metallurgical Engineering, 2026 , 46 (1) : 108 -113 . DOI: 10.3969/j.issn.0253-6099.2026.01.018
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Year 2026 volume 46 Issue 1
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Article Info
doi: 10.3969/j.issn.0253-6099.2026.01.018
  • Receive Date：2025-09-03
  • Online Date：2026-10-08
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  • Received：2025-09-03
Funding
Affiliations
    1.School of Materials Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu, China
    2.Zhejiang Dayou Industrial Co., Ltd., Hangzhou 310000, Zhejiang, China
    3.Changzhou Wisdom Robot Technology Co. Ltd., Changzhou 213125, Jiangsu, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2026.01.018
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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
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
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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