化学
过电位
自行车
电流(流体)
兴奋剂
电流密度
纳米技术
光电子学
电极
电化学
物理化学
电气工程
物理
材料科学
考古
量子力学
历史
工程类
作者
Huyi Yu,Renshu Huang,Qian Liu,Xingfa Chen,Tianqi Yu,Haiquan Wang,Xincheng Liang,Shibin Yin
出处
期刊:Chinese Journal of Structural Chemistry
日期:2024-02-01
卷期号:: 100253-100253
标识
DOI:10.1016/j.cjsc.2024.100253
摘要
Li−CO2 batteries (LCBs) suffer from high overpotentials caused by sluggish CO2 reaction kinetics. This work designs a Te-doped Fe3O4 flower-liked microsphere catalyst to lower the overpotential and improve the reversibility of LCBs. Experimental results reveal that Te doping modifies the electronic structure of Fe3O4 and reduces the overpotential. The stable Te−O bond between Te and C2O42− could effectively inhibit the disproportionation reaction of the latter, enabling the Te-Fe3O4 cathodes to exhibit a remarkable capacity (9485 mAh g−1) and a long cycling life (155 cycles) with an overpotential of 1.21 V and an energy efficiency of about 80% at a high current density (2000 mA g−1). Through the interaction between Te and Li2C2O4 to inhibit disproportionation reaction, this work successfully achieves long-term cycling of LCBs with low overpotential at high current density.
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