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Surface-Engineered Black Niobium Oxide@Graphene Nanosheets for High-Performance Sodium-/Potassium-Ion Full Batteries.
Small 2019; 15(28):e1901272S

Abstract

Nanoscale surface-engineering plays an important role in improving the performance of battery electrodes. Nb2 O5 is one typical model anode material with promising high-rate lithium storage. However, its modest reaction kinetics and low electrical conductivity obstruct the efficient storage of larger ions of sodium or potassium. In this work, partially surface-amorphized and defect-rich black niobium oxide@graphene (black Nb2 O5- x @rGO) nanosheets are designed to overcome the above Na/K storage problems. The black Nb2 O5- x @rGO nanosheets electrodes deliver a high-rate Na and K storage capacity (123 and 73 mAh g-1 , respectively at 3 A g-1) with long-term cycling stability. Besides, both Na-ion and K-ion full batteries based on black Nb2 O5- x @rGO nanosheets anodes and vanadate-based cathodes (Na0.33 V2 O5 and K0.5 V2 O5 for Na-ion and K-ion full batteries, respectively) demonstrate promising rate and cycling performance. Notably, the K-ion full battery delivers higher energy and power densities (172 Wh Kg-1 and 430 W Kg-1), comparable to those reported in state-of-the-art K-ion full batteries, accompanying with a capacity retention of ≈81.3% over 270 cycles. This result on Na-/K-ion batteries may pave the way to next-generation post-lithium batteries.

Authors+Show Affiliations

Department of Chemistry, Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.Department of Chemistry, Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.Department of Materials Science and Engineering, Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China. Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.Department of Chemistry, Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.Department of Materials Science and Engineering, Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.Department of Materials Science and Engineering, Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.Department of Chemistry, Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31165571

Citation

Tong, Zhongqiu, et al. "Surface-Engineered Black Niobium Oxide@Graphene Nanosheets for High-Performance Sodium-/Potassium-Ion Full Batteries." Small (Weinheim an Der Bergstrasse, Germany), vol. 15, no. 28, 2019, pp. e1901272.
Tong Z, Yang R, Wu S, et al. Surface-Engineered Black Niobium Oxide@Graphene Nanosheets for High-Performance Sodium-/Potassium-Ion Full Batteries. Small. 2019;15(28):e1901272.
Tong, Z., Yang, R., Wu, S., Shen, D., Jiao, T., Zhang, K., ... Lee, C. S. (2019). Surface-Engineered Black Niobium Oxide@Graphene Nanosheets for High-Performance Sodium-/Potassium-Ion Full Batteries. Small (Weinheim an Der Bergstrasse, Germany), 15(28), pp. e1901272. doi:10.1002/smll.201901272.
Tong Z, et al. Surface-Engineered Black Niobium Oxide@Graphene Nanosheets for High-Performance Sodium-/Potassium-Ion Full Batteries. Small. 2019;15(28):e1901272. PubMed PMID: 31165571.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Surface-Engineered Black Niobium Oxide@Graphene Nanosheets for High-Performance Sodium-/Potassium-Ion Full Batteries. AU - Tong,Zhongqiu, AU - Yang,Rui, AU - Wu,Shilin, AU - Shen,Dong, AU - Jiao,Tianpeng, AU - Zhang,Kaili, AU - Zhang,Wenjun, AU - Lee,Chun-Sing, Y1 - 2019/06/04/ PY - 2019/03/11/received PY - 2019/05/07/revised PY - 2019/6/6/pubmed PY - 2019/6/6/medline PY - 2019/6/6/entrez KW - Nb2O5 KW - anode materials KW - potassium-ion full batteries KW - sodium-ion full batteries KW - surface-engineering SP - e1901272 EP - e1901272 JF - Small (Weinheim an der Bergstrasse, Germany) JO - Small VL - 15 IS - 28 N2 - Nanoscale surface-engineering plays an important role in improving the performance of battery electrodes. Nb2 O5 is one typical model anode material with promising high-rate lithium storage. However, its modest reaction kinetics and low electrical conductivity obstruct the efficient storage of larger ions of sodium or potassium. In this work, partially surface-amorphized and defect-rich black niobium oxide@graphene (black Nb2 O5- x @rGO) nanosheets are designed to overcome the above Na/K storage problems. The black Nb2 O5- x @rGO nanosheets electrodes deliver a high-rate Na and K storage capacity (123 and 73 mAh g-1 , respectively at 3 A g-1) with long-term cycling stability. Besides, both Na-ion and K-ion full batteries based on black Nb2 O5- x @rGO nanosheets anodes and vanadate-based cathodes (Na0.33 V2 O5 and K0.5 V2 O5 for Na-ion and K-ion full batteries, respectively) demonstrate promising rate and cycling performance. Notably, the K-ion full battery delivers higher energy and power densities (172 Wh Kg-1 and 430 W Kg-1), comparable to those reported in state-of-the-art K-ion full batteries, accompanying with a capacity retention of ≈81.3% over 270 cycles. This result on Na-/K-ion batteries may pave the way to next-generation post-lithium batteries. SN - 1613-6829 UR - https://www.unboundmedicine.com/medline/citation/31165571/Surface_Engineered_Black_Niobium_Oxide@Graphene_Nanosheets_for_High_Performance_Sodium_/Potassium_Ion_Full_Batteries_ L2 - https://doi.org/10.1002/smll.201901272 DB - PRIME DP - Unbound Medicine ER -