Teng Yang, Ji Peng-Cheng, Jia Hai-Lang
School of Chemistry and Chemical Engineering, Annlysis and Testing Center of Jiangsu University of Technology, Institute of Advanced Functional Materials for Energy, Jiangsu University of Technology, Changzhou, 213001, P. R. China.
ChemSusChem. 2025 Jan 14;18(2):e202401276. doi: 10.1002/cssc.202401276. Epub 2024 Sep 16.
In this work, the waste orange-peel was used as carbon source, and the orange-peel derived carbon material can be obtained through simple pyrolysis. Then, we designed the structure of orange-peel carbon aerogel grown on iron-nickel layered double hydroxides in situ to achieve the effect of carbon coating (FeNi-LDH/CA). The oxygen evolution reaction catalytic performance of FeNi-LDH/CA is excellent, far exceeding that of commercial RuO. In 1 M KOH, the overpotential of FeNi-LDH/CA is only 250 mV (10 mA cm), obviously better than that of commercial RuO (295 mV). FeNi-LDH/CA shows good cycling stability, and after long-term i-t testing, the performance only decays by 3 % after running at 100 mA cm for 100 h. When used as an anode, the voltage of water-splitting is only 1.48 V at 10 mA cm. The rechargeable liquid zinc-air battery based on Pt/C-FeNi-LDH/CA catalyst has higher open-circuit voltage (1.543 V) and galvanostatic discharge capacity at 1.23 V (830 min, 10 mA cm). Moreover, the zinc-air battery based on Pt/C-FeNi-LDH/CA has a small charge-discharge voltage gap (0.65 V) at 10 mA cm, after 200 consecutive cycles (66 h), the charge-discharge voltage gap only increased by about 30 mV, indicating good cycling stability.
在这项工作中，废弃橙皮被用作碳源，通过简单热解可获得橙皮衍生的碳材料。然后，我们设计了原位生长在铁镍层状双氢氧化物上的橙皮碳气凝胶结构，以实现碳包覆效果（FeNi-LDH/CA）。FeNi-LDH/CA的析氧反应催化性能优异，远远超过商业RuO。在1 M KOH中，FeNi-LDH/CA的过电位仅为250 mV（10 mA cm），明显优于商业RuO（295 mV）。FeNi-LDH/CA表现出良好的循环稳定性，经过长期的i-t测试，在100 mA cm下运行100 h后性能仅衰减3%。当用作阳极时，在10 mA cm下的水分解电压仅为1.48 V。基于Pt/C-FeNi-LDH/CA催化剂的可充电液体锌空气电池具有更高的开路电压（1.543 V）和在1.23 V下的恒电流放电容量（830 min，10 mA cm）。此外，基于Pt/C-FeNi-LDH/CA的锌空气电池在10 mA cm下的充放电电压间隙较小（0.65 V），经过200次连续循环（66 h）后，充放电电压间隙仅增加约30 mV，表明具有良好的循环稳定性。
