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Pistachio-Shuck-Like MoSe2 /C Core/Shell Nanostructures for High-Performance Potassium-Ion Storage.
Adv Mater. 2018 Jul; 30(30):e1801812.AM

Abstract

Potassium-ion batteries (KIBs) have recently attracted intensive attention because of the abundant potassium resources and their low cost and high safety. However, the major challenge faced by KIBs lies in the lack of stable and high-capacity materials for the intercalation/deintercalation of large-size potassium ions. A unique pistachio-shuck-like MoSe2 /C core/shell nanostructure (PMC) is synthesized herein as an advanced anode for boosting the performance of KIBs. This PMC is featured with a few layers of molybdenum selenide as the core with an expanded interlayer spacing of ≈0.85 nm, facilitating the intercalation/deintercalation of K ions, and a thin amorphous carbon as the shell, which can confine the active molybdenum selenide nanosheets during cycling for maintaining the high structural stability. Most importantly, as a whole, the PMC has the advantages of reducing the surplus hollow interior space for improving its packing density and buffering the volume expansion during the K-ion intercalation for further enhancing the stability. As a consequence, the PMC shows a very high capacity of 322 mAh g-1 at 0.2 A g-1 over 100 cycles, and can still remain 226 mAh g-1 at 1.0 A g-1 for a long period of 1000 cycles, which is among the best-reported KIBs anodes.

Authors+Show Affiliations

Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China.Department of Materials Science and Engineering, NTNU Norwegian University of Science and Technology, Trondheim, 7491, Norway.Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China.Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China.Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China.Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China.Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China.Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China.Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China.Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China. BIC-ESAT, College of Engineering, Peking University, Beijing, 100871, China. Beijing Key Laboratory for Magnetoeletric Materials and Devices (BKL-MEMD), Peking University, Beijing, 100871, China. Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing, 100871, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29894007

Citation

Wang, Wei, et al. "Pistachio-Shuck-Like MoSe2 /C Core/Shell Nanostructures for High-Performance Potassium-Ion Storage." Advanced Materials (Deerfield Beach, Fla.), vol. 30, no. 30, 2018, pp. e1801812.
Wang W, Jiang B, Qian C, et al. Pistachio-Shuck-Like MoSe2 /C Core/Shell Nanostructures for High-Performance Potassium-Ion Storage. Adv Mater. 2018;30(30):e1801812.
Wang, W., Jiang, B., Qian, C., Lv, F., Feng, J., Zhou, J., Wang, K., Yang, C., Yang, Y., & Guo, S. (2018). Pistachio-Shuck-Like MoSe2 /C Core/Shell Nanostructures for High-Performance Potassium-Ion Storage. Advanced Materials (Deerfield Beach, Fla.), 30(30), e1801812. https://doi.org/10.1002/adma.201801812
Wang W, et al. Pistachio-Shuck-Like MoSe2 /C Core/Shell Nanostructures for High-Performance Potassium-Ion Storage. Adv Mater. 2018;30(30):e1801812. PubMed PMID: 29894007.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Pistachio-Shuck-Like MoSe2 /C Core/Shell Nanostructures for High-Performance Potassium-Ion Storage. AU - Wang,Wei, AU - Jiang,Bo, AU - Qian,Chang, AU - Lv,Fan, AU - Feng,Jianrui, AU - Zhou,Jinhui, AU - Wang,Kai, AU - Yang,Chao, AU - Yang,Yong, AU - Guo,Shaojun, Y1 - 2018/06/12/ PY - 2018/03/21/received PY - 2018/04/15/revised PY - 2018/6/13/pubmed PY - 2018/6/13/medline PY - 2018/6/13/entrez KW - expanded interlayer spacing KW - high packing density KW - molybdenum selenide KW - potassium-ion batteries SP - e1801812 EP - e1801812 JF - Advanced materials (Deerfield Beach, Fla.) JO - Adv Mater VL - 30 IS - 30 N2 - Potassium-ion batteries (KIBs) have recently attracted intensive attention because of the abundant potassium resources and their low cost and high safety. However, the major challenge faced by KIBs lies in the lack of stable and high-capacity materials for the intercalation/deintercalation of large-size potassium ions. A unique pistachio-shuck-like MoSe2 /C core/shell nanostructure (PMC) is synthesized herein as an advanced anode for boosting the performance of KIBs. This PMC is featured with a few layers of molybdenum selenide as the core with an expanded interlayer spacing of ≈0.85 nm, facilitating the intercalation/deintercalation of K ions, and a thin amorphous carbon as the shell, which can confine the active molybdenum selenide nanosheets during cycling for maintaining the high structural stability. Most importantly, as a whole, the PMC has the advantages of reducing the surplus hollow interior space for improving its packing density and buffering the volume expansion during the K-ion intercalation for further enhancing the stability. As a consequence, the PMC shows a very high capacity of 322 mAh g-1 at 0.2 A g-1 over 100 cycles, and can still remain 226 mAh g-1 at 1.0 A g-1 for a long period of 1000 cycles, which is among the best-reported KIBs anodes. SN - 1521-4095 UR - https://www.unboundmedicine.com/medline/citation/29894007/Pistachio_Shuck_Like_MoSe2_/C_Core/Shell_Nanostructures_for_High_Performance_Potassium_Ion_Storage_ L2 - https://doi.org/10.1002/adma.201801812 DB - PRIME DP - Unbound Medicine ER -
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