Highly effective bifunctional defective cobalt phthalocyanine for photo-involved lithium-oxygen batteries
Literature Information
Yujiao Xia, Xingyu Yu, Yunyun Xu, Xiaoli Fan, Bin Gao, Cheng Jiang, Mingyue Zhang, Xianli Huang, Hao Gong, Jianping He, Tao Wang
Lithium-oxygen batteries (LOBs) have become efficient energy storage devices. However, the discharge product (Li2O2) results in a large overpotential in the charge and discharge process, which hinders the application of LOBs. Herein, carbon nanotube-supported defective polymerized cobalt phthalocyanine composite was prepared by hydrothermal method and used as a cathode in photo-involved LOBs. The introduction of irregular structural defects not only facilitates the diffusion of O2 and Li+ but also accelerates the separation of photoelectrons and holes. Under light irradiation, the discharge potential is promoted to 3.30 V and the charge potential is reduced to 3.40 V at 0.05 mA cm−2, resulting in a high energy efficiency of 97.1%. Meanwhile, the complete decomposition of sheet Li2O2 is realized in the charge process, so that the battery polarization remained unchanged after more than 65 h of cycling. This study provides an effective reference for subsequent application of metal–organic materials in metal-air batteries as a photoelectric-cathode.
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Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment










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