TY - JOUR
T1 - Zeolitic imidazolate framework-derived Co-Fe@NC for rechargeable hybrid sodium-air battery with a low voltage gap and long cycle life
AU - Gao, Haixing
AU - Zhu, Siqi
AU - Kang, Yao
AU - Dinh, Duc Anh
AU - Hui, Kwan San
AU - Bin, Feng
AU - Fan, Xi
AU - Chen, Fuming
AU - Mahmood, Azhar
AU - Geng, Jianxin
AU - Cheong, Weng Chon Max
AU - Hui, Kwun Nam
N1 - Funding Information: This work was funded by the Science and Technology Development Fund, Macau SAR (File Nos. 0191/2017/A3, 0041/2019/A1, 0046/2019/AFJ, and 0021/2019/AIR), University of Macau (File Nos. MYRG2017-00216-FST and MYRG2018-00192-IAPME), the UEA funding, the State Key Laboratory of Organic-Inorganic Composites (oic-202101002), Science and Technology Program of Guangzhou (2019050001), and National Key Research and Development Program of China (2019YFE0198000). F.C. acknowledges the Pearl River Talent Program (2019QN01L951). The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (No. 52176141).
PY - 2022/2/28
Y1 - 2022/2/28
N2 - Developing low-cost, efficient electrocatalysts for the air electrode of high-performance rechargeable hybrid sodium-air batteries (HSABs) remains challenging. Herein, efficient bimetallic nanoparticles encapsulated in nitrogen-doped carbon (Co-Fe@NC) were developed for the oxygen reduction and evolution reactions in HSABs. The bimetallic Co-Fe@NC catalyst outperformed its monometallic counterparts in the oxygen reduction reaction (ORR)/oxygen evolution reaction (OER) activity. The assembled HSAB, utilizing the Co-Fe@NC in the air electrode, exhibited a smaller voltage gap of 0.27 V and a higher power density of 5.39 mW/cm2 compared with the air electrode utilizing Pt/C + RuO2 (0.55 V, 4.79 mW/cm2). Furthermore, the round-trip efficiency of the assembled HSAB is up to 75.37% after 700 h of cycling at 0.1 mA/cm2, outperforming the benchmark HSAB with Pt/C + RuO2 (65.76% after 400 h). This work presents a promising strategy to prepare low-cost, efficient electrocatalysts to substitute the precious catalyst Pt/C + RuO2 in HSABs or other metal-air batteries for practical applications.
AB - Developing low-cost, efficient electrocatalysts for the air electrode of high-performance rechargeable hybrid sodium-air batteries (HSABs) remains challenging. Herein, efficient bimetallic nanoparticles encapsulated in nitrogen-doped carbon (Co-Fe@NC) were developed for the oxygen reduction and evolution reactions in HSABs. The bimetallic Co-Fe@NC catalyst outperformed its monometallic counterparts in the oxygen reduction reaction (ORR)/oxygen evolution reaction (OER) activity. The assembled HSAB, utilizing the Co-Fe@NC in the air electrode, exhibited a smaller voltage gap of 0.27 V and a higher power density of 5.39 mW/cm2 compared with the air electrode utilizing Pt/C + RuO2 (0.55 V, 4.79 mW/cm2). Furthermore, the round-trip efficiency of the assembled HSAB is up to 75.37% after 700 h of cycling at 0.1 mA/cm2, outperforming the benchmark HSAB with Pt/C + RuO2 (65.76% after 400 h). This work presents a promising strategy to prepare low-cost, efficient electrocatalysts to substitute the precious catalyst Pt/C + RuO2 in HSABs or other metal-air batteries for practical applications.
KW - bifunctional electrocatalyst
KW - bimetallic materials
KW - hybrid sodium−air battery
KW - MOF-derived materials
KW - zeolitic imidazolate frameworks (ZIF)
UR - https://www.scopus.com/pages/publications/85124623508
U2 - 10.1021/acsaem.1c03073
DO - 10.1021/acsaem.1c03073
M3 - Article
AN - SCOPUS:85124623508
SN - 2574-0962
VL - 5
SP - 1662
EP - 1671
JO - ACS Applied Energy Materials
JF - ACS Applied Energy Materials
IS - 2
ER -