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Hydrogel-derived VPO4/porous carbon framework for enhanced lithium and sodium storage.
Nanoscale. 2020 Feb 14; 12(6):3812-3819.N

Abstract

Vanadium phosphate (VPO4) is attracting extensive attention because of its advantages of low cost, stable structure and high theoretical capacity. However, similar to other phosphates, VPO4 suffers from low electrical conductivity and large volume expansion, adversely influencing its electrochemical performance and thus limiting its application as an anode in lithium and sodium ion batteries. Herein, we propose a novel, facile strategy based on the organic-inorganic network of a nanostructured hybrid hydrogel for immobilizing VPO4 in a hierarchically porous carbon framework (3DHP-VPO4@C). VPO4 chemically interacts with the carbon framework via a P-C bond, functioning as a buffer layer to maintain structural stability during charge/discharge cycles. The carbon framework offers an efficient pathway for electron and Li+/Na+ transport to ensure high electronic conductivity of the electrode. The 3DHP-VPO4@C anode exhibits excellent lithium and sodium storage performances, and notably high capacities of 957 mA h g-1 at 0.1 A g-1 and 345.3 mA h g-1 at 5 A g-1 for lithium ion batteries. Full cells consisting of a LiFePO4 cathode and the 3DHP-VPO4@C anode also prove to have superior cycling stability and rate performance for LIBs.

Authors+Show Affiliations

Key Laboratory of Function-oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, 471934, P. R. China. myclxm@163.com.Key Laboratory of Function-oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, 471934, P. R. China. myclxm@163.com.Key Laboratory of Function-oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, 471934, P. R. China. myclxm@163.com.Key Laboratory of Function-oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, 471934, P. R. China. myclxm@163.com.Key Laboratory of Function-oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, 471934, P. R. China. myclxm@163.com.Key Laboratory of Function-oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, 471934, P. R. China. myclxm@163.com and College of Materials and Chemical Engineering, China Three Gorges University, Yichang, 443002, P. R. China.Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China. mejkkim@ust.hk.Key Laboratory of Function-oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, 471934, P. R. China. myclxm@163.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31994591

Citation

Guo, Donglei, et al. "Hydrogel-derived VPO4/porous Carbon Framework for Enhanced Lithium and Sodium Storage." Nanoscale, vol. 12, no. 6, 2020, pp. 3812-3819.
Guo D, Yang M, Li Y, et al. Hydrogel-derived VPO4/porous carbon framework for enhanced lithium and sodium storage. Nanoscale. 2020;12(6):3812-3819.
Guo, D., Yang, M., Li, Y., Xue, Y., Liu, G., Wu, N., Kim, J. K., & Liu, X. (2020). Hydrogel-derived VPO4/porous carbon framework for enhanced lithium and sodium storage. Nanoscale, 12(6), 3812-3819. https://doi.org/10.1039/d0nr00460j
Guo D, et al. Hydrogel-derived VPO4/porous Carbon Framework for Enhanced Lithium and Sodium Storage. Nanoscale. 2020 Feb 14;12(6):3812-3819. PubMed PMID: 31994591.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Hydrogel-derived VPO4/porous carbon framework for enhanced lithium and sodium storage. AU - Guo,Donglei, AU - Yang,Mengke, AU - Li,Yicong, AU - Xue,Yuwen, AU - Liu,Guilong, AU - Wu,Naiteng, AU - Kim,Jang-Kyo, AU - Liu,Xianming, Y1 - 2020/01/29/ PY - 2020/1/30/pubmed PY - 2020/1/30/medline PY - 2020/1/30/entrez SP - 3812 EP - 3819 JF - Nanoscale JO - Nanoscale VL - 12 IS - 6 N2 - Vanadium phosphate (VPO4) is attracting extensive attention because of its advantages of low cost, stable structure and high theoretical capacity. However, similar to other phosphates, VPO4 suffers from low electrical conductivity and large volume expansion, adversely influencing its electrochemical performance and thus limiting its application as an anode in lithium and sodium ion batteries. Herein, we propose a novel, facile strategy based on the organic-inorganic network of a nanostructured hybrid hydrogel for immobilizing VPO4 in a hierarchically porous carbon framework (3DHP-VPO4@C). VPO4 chemically interacts with the carbon framework via a P-C bond, functioning as a buffer layer to maintain structural stability during charge/discharge cycles. The carbon framework offers an efficient pathway for electron and Li+/Na+ transport to ensure high electronic conductivity of the electrode. The 3DHP-VPO4@C anode exhibits excellent lithium and sodium storage performances, and notably high capacities of 957 mA h g-1 at 0.1 A g-1 and 345.3 mA h g-1 at 5 A g-1 for lithium ion batteries. Full cells consisting of a LiFePO4 cathode and the 3DHP-VPO4@C anode also prove to have superior cycling stability and rate performance for LIBs. SN - 2040-3372 UR - https://www.unboundmedicine.com/medline/citation/31994591/Hydrogel_derived_VPO4/porous_carbon_framework_for_enhanced_lithium_and_sodium_storage_ L2 - https://doi.org/10.1039/d0nr00460j DB - PRIME DP - Unbound Medicine ER -
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