林业工程学报2026，Vol.11Issue(1)：97-107,11.DOI:10.13360/j.issn.2096-1359.202505011
Fe团簇修饰木质素衍生碳基催化剂的锌-空气电池应用
Fe-cluster-decorated lignin-derived carbon electrocatalysts for zinc-air batteries
摘要
Abstract
The development of bifunctional oxygen electrocatalysts with high activity and stability is essential for advancing the practical application of zinc-air batteries(ZABs),which are promising candidates for energy storage systems due to their high energy density and environmentally friendly characteristics.In this study,a novel approach was developed to fabricate nitrogen-doped lignin-derived carbon catalysts enriched with a significant number of carbon-edge Fe-N sites(Fe@NAC).This innovative catalyst was synthesized by leveraging the chelation between the phenolic hydroxyl groups presented in alkaline lignin(AL)and Fe ions,which facilitated the uniform distribution of iron clusters and their effective anchoring within the carbon matrix.Additionally,the nitrogen doping and gas etching effects of NH4 Cl were incorporated to enhance the catalyst's properties.The resulting hierarchical pore structure,induced by NH3/HCl etching,provided abundant anchoring sites that are critical for the formation of edge-hosted Fe-N(eFe-N)configurations.These configurations were crucial for optimizing the electrocatalytic activity of the material.At an optimal Fe loading of 0.10 mmol(denoted as 0.1Fe@NAC),the catalyst demonstrated the highest proportion of eFe-N structures,where the edge effect played a significant role in enhancing the intrinsic activity of the active sites.For the oxygen reduction reaction(ORR),the 0.1Fe@NAC catalyst achieved a remarkable half-wave potential of 0.95 V,indicating its high efficiency.In terms of the oxygen evolution reaction(OER),it was exhibited an overpotential of only 390 mV at a current density of 10 mA/cm2,showcasing its excellent electrocatalytic performance.Furthermore,liquid ZABs assembled using the bifunctional 0.1Fe@NAC catalyst achieved an impressive peak power density of 168.2 mW/cm2 and a specific capacity of 779.8 mAh/g.These batteries maintained stable cycling performance for an extended period of 140 h at a current density of 5 mA/cm2,demonstrating their reliability and longevity.In addition,flexible zinc-air batteries incorporating sodium lignosulfonate/acrylic acid gel electrolytes were investigated,exhibiting 30 h of cycling stability along with excellent mechanical flexibility.This characteristic made them promising candidates for wearable energy storage devices,which are increasingly in demand with the rise of portable electronics and the push for sustainable energy solutions.Overall,this research not only provides novel insights into the development of effective catalysts for zinc-air batteries but also promotes the high-value utilization of biomass resources.By advancing these technologies,this work is expected to contribute to the broader goals of promoting a green energy transition and supporting carbon neutrality initiatives.The findings of this study hold significant implications for future research and development in the field of electrocatalysis and energy storage technologies.关键词
木质素衍生碳/双功能催化剂/氧电极反应/锌-空气电池Key words
lignin-derived carbon/bifunctional catalyst/oxygen electrode reaction/zinc-air battery分类
化学化工引用本文复制引用
金芮西,杨聪聪,刘远馨,刘志航,李坚,高丽坤..Fe团簇修饰木质素衍生碳基催化剂的锌-空气电池应用[J].林业工程学报,2026,11(1):97-107,11.基金项目
国家自然科学基金(32301514). （32301514）
