Tags

Type your tag names separated by a space and hit enter

Metallic Octahedral CoSe2 Threaded by N-Doped Carbon Nanotubes: A Flexible Framework for High-Performance Potassium-Ion Batteries.
Adv Sci (Weinh). 2018 Oct; 5(10):1800782.AS

Abstract

Due to the abundant and low-cost K resources, the exploration of suitable materials for potassium-ion batteries (KIBs) is advancing as a promising alternative to lithium-ion batteries. However, the large-sized and sluggish-kinetic K ions cause poor battery behavior. This work reports a metallic octahedral CoSe2 threaded by N-doped carbon nanotubes as a flexible framework for a high-performance KIBs anode. The metallic property of CoSe2 together with the highly conductive N-doped carbon nanotubes greatly accelerates the electron transfer and improves the rate performance. The carbon nanotube framework serves as a backbone to inhibit the agglomeration, anchor the active materials, and stabilize the integral structure. Every octahedral CoSe2 particle arranges along the carbon nanotubes in sequence, and the zigzag void space can accommodate the volume expansion during cycling, therefore boosting the cycling stability. Density functional theory is also employed to study the K-ion intercalation/deintercalation process. This unique structure delivers a high capacity (253 mAh g-1 at 0.2 A g-1 over 100 cycles) and enhanced rate performance (173 mAh g-1 at 2.0 A g-1 over 600 cycles) as an advanced anode material for KIBs.

Authors+Show Affiliations

MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China.Department of Materials Science and Engineering NTNU Norwegian University of Science and Technology Trondheim 7491 Norway.Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing 100083 China.Department of Materials Science and Metallurgy University of Cambridge Cambridge CB3 0FS UK.MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China.Department of Materials Science and Engineering Peking University Beijing 100871 China.Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing 100083 China.School of Materials Science and Engineering Shanxi University of Science and Technology Weiyang, Xi'an Shanxi 710021 China.Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing 100083 China.Department of Materials Science and Metallurgy University of Cambridge Cambridge CB3 0FS UK. Department of Materials Science and Engineering Peking University Beijing 100871 China.MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30356990

Citation

Yu, Qiyao, et al. "Metallic Octahedral CoSe2 Threaded By N-Doped Carbon Nanotubes: a Flexible Framework for High-Performance Potassium-Ion Batteries." Advanced Science (Weinheim, Baden-Wurttemberg, Germany), vol. 5, no. 10, 2018, p. 1800782.
Yu Q, Jiang B, Hu J, et al. Metallic Octahedral CoSe2 Threaded by N-Doped Carbon Nanotubes: A Flexible Framework for High-Performance Potassium-Ion Batteries. Adv Sci (Weinh). 2018;5(10):1800782.
Yu, Q., Jiang, B., Hu, J., Lao, C. Y., Gao, Y., Li, P., Liu, Z., Suo, G., He, D., Wang, W. A., & Yin, G. (2018). Metallic Octahedral CoSe2 Threaded by N-Doped Carbon Nanotubes: A Flexible Framework for High-Performance Potassium-Ion Batteries. Advanced Science (Weinheim, Baden-Wurttemberg, Germany), 5(10), 1800782. https://doi.org/10.1002/advs.201800782
Yu Q, et al. Metallic Octahedral CoSe2 Threaded By N-Doped Carbon Nanotubes: a Flexible Framework for High-Performance Potassium-Ion Batteries. Adv Sci (Weinh). 2018;5(10):1800782. PubMed PMID: 30356990.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Metallic Octahedral CoSe2 Threaded by N-Doped Carbon Nanotubes: A Flexible Framework for High-Performance Potassium-Ion Batteries. AU - Yu,Qiyao, AU - Jiang,Bo, AU - Hu,Jun, AU - Lao,Cheng-Yen, AU - Gao,Yunzhi, AU - Li,Peihao, AU - Liu,Zhiwei, AU - Suo,Guoquan, AU - He,Donglin, AU - Wang,Wei Alex, AU - Yin,Geping, Y1 - 2018/08/07/ PY - 2018/05/20/received PY - 2018/06/29/revised PY - 2018/10/26/entrez PY - 2018/10/26/pubmed PY - 2018/10/26/medline KW - carbon nanotube frameworks KW - flexible electrodes KW - metallic CoSe2 KW - octahedrons KW - potassium‐ion batteries SP - 1800782 EP - 1800782 JF - Advanced science (Weinheim, Baden-Wurttemberg, Germany) JO - Adv Sci (Weinh) VL - 5 IS - 10 N2 - Due to the abundant and low-cost K resources, the exploration of suitable materials for potassium-ion batteries (KIBs) is advancing as a promising alternative to lithium-ion batteries. However, the large-sized and sluggish-kinetic K ions cause poor battery behavior. This work reports a metallic octahedral CoSe2 threaded by N-doped carbon nanotubes as a flexible framework for a high-performance KIBs anode. The metallic property of CoSe2 together with the highly conductive N-doped carbon nanotubes greatly accelerates the electron transfer and improves the rate performance. The carbon nanotube framework serves as a backbone to inhibit the agglomeration, anchor the active materials, and stabilize the integral structure. Every octahedral CoSe2 particle arranges along the carbon nanotubes in sequence, and the zigzag void space can accommodate the volume expansion during cycling, therefore boosting the cycling stability. Density functional theory is also employed to study the K-ion intercalation/deintercalation process. This unique structure delivers a high capacity (253 mAh g-1 at 0.2 A g-1 over 100 cycles) and enhanced rate performance (173 mAh g-1 at 2.0 A g-1 over 600 cycles) as an advanced anode material for KIBs. SN - 2198-3844 UR - https://www.unboundmedicine.com/medline/citation/30356990/Metallic_Octahedral_CoSe2_Threaded_by_N_Doped_Carbon_Nanotubes:_A_Flexible_Framework_for_High_Performance_Potassium_Ion_Batteries_ L2 - https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/30356990/ DB - PRIME DP - Unbound Medicine ER -
Try the Free App:
Prime PubMed app for iOS iPhone iPad
Prime PubMed app for Android
Prime PubMed is provided
free to individuals by:
Unbound Medicine.