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Engineering Hollow Porous Carbon-Sphere-Confined MoS2 with Expanded (002) Planes for Boosting Potassium-Ion Storage.
ACS Appl Mater Interfaces. 2020 Jan 08; 12(1):1232-1240.AA

Abstract

Potassium-ion batteries (PIBs) are emerging as promising next-generation electrochemical storage systems for their abundant and low-cost potassium resource. The key point of applying PIBs is to exploit stable K-host materials to accommodate the large-sized potassium ion. In this work, a yolk-shell structured MoS2@hollow porous carbon-sphere composite (MoS2@HPCS) assembled by engineering HPCS-confined MoS2 with expanded (002) planes is proposed for boosting potassium-ion storage. When used as a PIB anode, the as-synthesized MoS2@HPCS composite shows superior potassium storage performance. It delivers a reversible capacity of 254.9 mAh g-1 at 0.5 A g-1 after 100 discharge/charge cycles and maintains 126.2 mAh g-1 at 1 A g-1 over 500 cycles. The superior potassium-ion storage performance is ascribed to the elaborate yolk-shell nanoarchitecture and the expanded interlayer of the MoS2 nanosheet, which could shorten the transport distance, enhance the electronic conductivity, relieve the volume variation, prevent the self-aggregation of MoS2, facilitate the electrolyte penetration, and boost the intercalation/deintercalation of K+. Moreover, the potential application of the MoS2@HPCS composite is also evaluated by assembled K-ion full cells with a perylenetetracarboxylic dianhydride cathode. Accordingly, the as-developed synthetic strategy can be extended to manufacture other host materials for PIBs and beyond.

Authors+Show Affiliations

School of Metallurgy and Environment , Central South University , Changsha 410083 , China.School of Metallurgy and Environment , Central South University , Changsha 410083 , China.School of Metallurgy and Environment , Central South University , Changsha 410083 , China.School of Metallurgy and Environment , Central South University , Changsha 410083 , China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31858775

Citation

Hu, Junxian, et al. "Engineering Hollow Porous Carbon-Sphere-Confined MoS2 With Expanded (002) Planes for Boosting Potassium-Ion Storage." ACS Applied Materials & Interfaces, vol. 12, no. 1, 2020, pp. 1232-1240.
Hu J, Xie Y, Zhou X, et al. Engineering Hollow Porous Carbon-Sphere-Confined MoS2 with Expanded (002) Planes for Boosting Potassium-Ion Storage. ACS Appl Mater Interfaces. 2020;12(1):1232-1240.
Hu, J., Xie, Y., Zhou, X., & Zhang, Z. (2020). Engineering Hollow Porous Carbon-Sphere-Confined MoS2 with Expanded (002) Planes for Boosting Potassium-Ion Storage. ACS Applied Materials & Interfaces, 12(1), 1232-1240. https://doi.org/10.1021/acsami.9b14742
Hu J, et al. Engineering Hollow Porous Carbon-Sphere-Confined MoS2 With Expanded (002) Planes for Boosting Potassium-Ion Storage. ACS Appl Mater Interfaces. 2020 Jan 8;12(1):1232-1240. PubMed PMID: 31858775.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Engineering Hollow Porous Carbon-Sphere-Confined MoS2 with Expanded (002) Planes for Boosting Potassium-Ion Storage. AU - Hu,Junxian, AU - Xie,Yangyang, AU - Zhou,Xiaolu, AU - Zhang,Zhian, Y1 - 2019/12/20/ PY - 2019/12/21/pubmed PY - 2019/12/21/medline PY - 2019/12/21/entrez KW - expanded (002) planes KW - hollow porous carbon spheres KW - molybdenum disulfide KW - potassium-ion batteries KW - yolk−shell structure SP - 1232 EP - 1240 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 12 IS - 1 N2 - Potassium-ion batteries (PIBs) are emerging as promising next-generation electrochemical storage systems for their abundant and low-cost potassium resource. The key point of applying PIBs is to exploit stable K-host materials to accommodate the large-sized potassium ion. In this work, a yolk-shell structured MoS2@hollow porous carbon-sphere composite (MoS2@HPCS) assembled by engineering HPCS-confined MoS2 with expanded (002) planes is proposed for boosting potassium-ion storage. When used as a PIB anode, the as-synthesized MoS2@HPCS composite shows superior potassium storage performance. It delivers a reversible capacity of 254.9 mAh g-1 at 0.5 A g-1 after 100 discharge/charge cycles and maintains 126.2 mAh g-1 at 1 A g-1 over 500 cycles. The superior potassium-ion storage performance is ascribed to the elaborate yolk-shell nanoarchitecture and the expanded interlayer of the MoS2 nanosheet, which could shorten the transport distance, enhance the electronic conductivity, relieve the volume variation, prevent the self-aggregation of MoS2, facilitate the electrolyte penetration, and boost the intercalation/deintercalation of K+. Moreover, the potential application of the MoS2@HPCS composite is also evaluated by assembled K-ion full cells with a perylenetetracarboxylic dianhydride cathode. Accordingly, the as-developed synthetic strategy can be extended to manufacture other host materials for PIBs and beyond. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/31858775/Engineering_Hollow_Porous_Carbon_Sphere_Confined_MoS2_with_Expanded__002__Planes_for_Boosting_Potassium_Ion_Storage_ L2 - https://doi.org/10.1021/acsami.9b14742 DB - PRIME DP - Unbound Medicine ER -
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