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Ultrathin Two-Dimensional Metal-Organic Framework Nanosheets with the Inherent Open Active Sites as Electrocatalysts in Aprotic Li-O2 Batteries.
ACS Appl Mater Interfaces 2019; 11(12):11403-11413AA

Abstract

Ultrathin two-dimensional metal-organic frameworks (2D MOFs) have the potential to improve the performance of Li-O2 batteries with high O2 accessibility, open catalytic active sites, and large surface areas. To obtain highly efficient cathode catalysts for aprotic Li-O2 batteries, a facile ultrasonicated method has been developed to synthesize three kinds of 2D MOFs (2D Co-MOF, Ni-MOF, and Mn-MOF). Contributing from the inherent open active sites of the Mn-O framework, the discharge specific capacity of 9464 mAh g-1 is achieved with the 2D Mn-MOF cathode, higher than those of the 2D Co-MOF and Ni-MOF cathodes. During the cycling test, the 2D Mn-MOF cathode stably operates more than 200 cycles at 100 mA g-1 with a curtailed discharge capacity of 1000 mAh g-1, quite longer than those of others. According to further electrochemical analysis, we observe that the 2D Mn-MOF outperforms 2D Ni-MOF and Co-MOF due to a superior oxygen reduction reactions and oxygen evolution reactions activity, in particular, the efficient oxidation of both LiOH and Li2O2. The present study provides new insights that the 2D MOF nanosheets can be well applied as the Li-O2 cells with high energy density and long cycling life.

Authors+Show Affiliations

Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry , Beijing Normal University , Beijing 100875 , China.Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry , Beijing Normal University , Beijing 100875 , China.Institute of Nuclear Physics and Chemistry , China Academy of Engineering Physics , Mianshan Road 64 , Mianyang , Sichuan 621900 , China.Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry , Beijing Normal University , Beijing 100875 , China.Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry , Beijing Normal University , Beijing 100875 , China.Institute of Nuclear Physics and Chemistry , China Academy of Engineering Physics , Mianshan Road 64 , Mianyang , Sichuan 621900 , China.Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry , Beijing Normal University , Beijing 100875 , China.Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry , Beijing Normal University , Beijing 100875 , China.Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry , Beijing Normal University , Beijing 100875 , China.Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry , Beijing Normal University , Beijing 100875 , China.Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry , Beijing Normal University , Beijing 100875 , China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30816695

Citation

Yuan, Mengwei, et al. "Ultrathin Two-Dimensional Metal-Organic Framework Nanosheets With the Inherent Open Active Sites as Electrocatalysts in Aprotic Li-O2 Batteries." ACS Applied Materials & Interfaces, vol. 11, no. 12, 2019, pp. 11403-11413.
Yuan M, Wang R, Fu W, et al. Ultrathin Two-Dimensional Metal-Organic Framework Nanosheets with the Inherent Open Active Sites as Electrocatalysts in Aprotic Li-O2 Batteries. ACS Appl Mater Interfaces. 2019;11(12):11403-11413.
Yuan, M., Wang, R., Fu, W., Lin, L., Sun, Z., Long, X., ... Ma, S. (2019). Ultrathin Two-Dimensional Metal-Organic Framework Nanosheets with the Inherent Open Active Sites as Electrocatalysts in Aprotic Li-O2 Batteries. ACS Applied Materials & Interfaces, 11(12), pp. 11403-11413. doi:10.1021/acsami.8b21808.
Yuan M, et al. Ultrathin Two-Dimensional Metal-Organic Framework Nanosheets With the Inherent Open Active Sites as Electrocatalysts in Aprotic Li-O2 Batteries. ACS Appl Mater Interfaces. 2019 Mar 27;11(12):11403-11413. PubMed PMID: 30816695.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ultrathin Two-Dimensional Metal-Organic Framework Nanosheets with the Inherent Open Active Sites as Electrocatalysts in Aprotic Li-O2 Batteries. AU - Yuan,Mengwei, AU - Wang,Rui, AU - Fu,Wenbo, AU - Lin,Liu, AU - Sun,Zemin, AU - Long,Xinggui, AU - Zhang,Shuting, AU - Nan,Caiyun, AU - Sun,Genban, AU - Li,Huifeng, AU - Ma,Shulan, Y1 - 2019/03/13/ PY - 2019/3/1/pubmed PY - 2019/3/1/medline PY - 2019/3/1/entrez KW - Li−O2 batteries KW - electrocatalyst KW - metal−organic framework KW - nanosheets SP - 11403 EP - 11413 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 11 IS - 12 N2 - Ultrathin two-dimensional metal-organic frameworks (2D MOFs) have the potential to improve the performance of Li-O2 batteries with high O2 accessibility, open catalytic active sites, and large surface areas. To obtain highly efficient cathode catalysts for aprotic Li-O2 batteries, a facile ultrasonicated method has been developed to synthesize three kinds of 2D MOFs (2D Co-MOF, Ni-MOF, and Mn-MOF). Contributing from the inherent open active sites of the Mn-O framework, the discharge specific capacity of 9464 mAh g-1 is achieved with the 2D Mn-MOF cathode, higher than those of the 2D Co-MOF and Ni-MOF cathodes. During the cycling test, the 2D Mn-MOF cathode stably operates more than 200 cycles at 100 mA g-1 with a curtailed discharge capacity of 1000 mAh g-1, quite longer than those of others. According to further electrochemical analysis, we observe that the 2D Mn-MOF outperforms 2D Ni-MOF and Co-MOF due to a superior oxygen reduction reactions and oxygen evolution reactions activity, in particular, the efficient oxidation of both LiOH and Li2O2. The present study provides new insights that the 2D MOF nanosheets can be well applied as the Li-O2 cells with high energy density and long cycling life. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/30816695/Ultrathin_Two_Dimensional_Metal_Organic_Framework_Nanosheets_with_the_Inherent_Open_Active_Sites_as_Electrocatalysts_in_Aprotic_Li_O2_Batteries_ L2 - https://dx.doi.org/10.1021/acsami.8b21808 DB - PRIME DP - Unbound Medicine ER -