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Carbon-Coated Na3.32 Fe2.34 (P2 O7)2 Cathode Material for High-Rate and Long-Life Sodium-Ion Batteries.
Adv Mater. 2017 Jun; 29(21)AM

Abstract

Rechargeable sodium-ion batteries are proposed as the most appropriate alternative to lithium batteries due to the fast consumption of the limited lithium resources. Due to their improved safety, polyanion framework compounds have recently gained attention as potential candidates. With the earth-abundant element Fe being the redox center, the uniform carbon-coated Na3.32 Fe2.34 (P2 O7)2 /C composite represents a promising alternative for sodium-ion batteries. The electrochemical results show that the as-prepared Na3.32 Fe2.34 (P2 O7)2 /C composite can deliver capacity of ≈100 mA h g-1 at 0.1 C (1 C = 120 mA g-1), with capacity retention of 92.3% at 0.5 C after 300 cycles. After adding fluoroethylene carbonate additive to the electrolyte, 89.6% of the initial capacity is maintained, even after 1100 cycles at 5 C. The electrochemical mechanism is systematically investigated via both in situ synchrotron X-ray diffraction and density functional theory calculations. The results show that the sodiation and desodiation are single-phase-transition processes with two 1D sodium paths, which facilitates fast ionic diffusion. A small volume change, nearly 100% first-cycle Coulombic efficiency, and a pseudocapacitance contribution are also demonstrated. This research indicates that this new compound could be a potential competitor for other iron-based cathode electrodes for application in large-scale Na rechargeable batteries.

Authors+Show Affiliations

Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2522, Australia.School of Computer Science and Technology, University of South China, Hengyang, 421001, China.Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2522, Australia.Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2522, Australia.Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2522, Australia.School of Chemical Engineer and Australian Institute of Bioengineering and Nanotechnology, University of Queensland, Brisbane, QLD, 4072, Australia.Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria, 3168, Australia.Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2522, Australia.School of Chemical Engineer and Australian Institute of Bioengineering and Nanotechnology, University of Queensland, Brisbane, QLD, 4072, Australia.College of Chemical Engineering, Sichuan University, Chengdu, 610065, China.Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2522, Australia.Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2522, Australia.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28370429

Citation

Chen, Mingzhe, et al. "Carbon-Coated Na3.32 Fe2.34 (P2 O7)2 Cathode Material for High-Rate and Long-Life Sodium-Ion Batteries." Advanced Materials (Deerfield Beach, Fla.), vol. 29, no. 21, 2017.
Chen M, Chen L, Hu Z, et al. Carbon-Coated Na3.32 Fe2.34 (P2 O7)2 Cathode Material for High-Rate and Long-Life Sodium-Ion Batteries. Adv Mater Weinheim. 2017;29(21).
Chen, M., Chen, L., Hu, Z., Liu, Q., Zhang, B., Hu, Y., Gu, Q., Wang, J. L., Wang, L. Z., Guo, X., Chou, S. L., & Dou, S. X. (2017). Carbon-Coated Na3.32 Fe2.34 (P2 O7)2 Cathode Material for High-Rate and Long-Life Sodium-Ion Batteries. Advanced Materials (Deerfield Beach, Fla.), 29(21). https://doi.org/10.1002/adma.201605535
Chen M, et al. Carbon-Coated Na3.32 Fe2.34 (P2 O7)2 Cathode Material for High-Rate and Long-Life Sodium-Ion Batteries. Adv Mater Weinheim. 2017;29(21) PubMed PMID: 28370429.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Carbon-Coated Na3.32 Fe2.34 (P2 O7)2 Cathode Material for High-Rate and Long-Life Sodium-Ion Batteries. AU - Chen,Mingzhe, AU - Chen,Lingna, AU - Hu,Zhe, AU - Liu,Qiannan, AU - Zhang,Binwei, AU - Hu,Yuxiang, AU - Gu,Qinfen, AU - Wang,Jian-Li, AU - Wang,Lian-Zhou, AU - Guo,Xiaodong, AU - Chou,Shu-Lei, AU - Dou,Shi-Xue, Y1 - 2017/03/29/ PY - 2016/10/14/received PY - 2017/01/24/revised PY - 2017/4/4/pubmed PY - 2017/4/4/medline PY - 2017/4/4/entrez KW - carbon coatings KW - cathode materials KW - cycling stability KW - polyanion frameworks KW - sodium-ion batteries JF - Advanced materials (Deerfield Beach, Fla.) JO - Adv. Mater. Weinheim VL - 29 IS - 21 N2 - Rechargeable sodium-ion batteries are proposed as the most appropriate alternative to lithium batteries due to the fast consumption of the limited lithium resources. Due to their improved safety, polyanion framework compounds have recently gained attention as potential candidates. With the earth-abundant element Fe being the redox center, the uniform carbon-coated Na3.32 Fe2.34 (P2 O7)2 /C composite represents a promising alternative for sodium-ion batteries. The electrochemical results show that the as-prepared Na3.32 Fe2.34 (P2 O7)2 /C composite can deliver capacity of ≈100 mA h g-1 at 0.1 C (1 C = 120 mA g-1), with capacity retention of 92.3% at 0.5 C after 300 cycles. After adding fluoroethylene carbonate additive to the electrolyte, 89.6% of the initial capacity is maintained, even after 1100 cycles at 5 C. The electrochemical mechanism is systematically investigated via both in situ synchrotron X-ray diffraction and density functional theory calculations. The results show that the sodiation and desodiation are single-phase-transition processes with two 1D sodium paths, which facilitates fast ionic diffusion. A small volume change, nearly 100% first-cycle Coulombic efficiency, and a pseudocapacitance contribution are also demonstrated. This research indicates that this new compound could be a potential competitor for other iron-based cathode electrodes for application in large-scale Na rechargeable batteries. SN - 1521-4095 UR - https://www.unboundmedicine.com/medline/citation/28370429/Carbon_Coated_Na3_32_Fe2_34__P2_O7_2_Cathode_Material_for_High_Rate_and_Long_Life_Sodium_Ion_Batteries_ L2 - https://doi.org/10.1002/adma.201605535 DB - PRIME DP - Unbound Medicine ER -
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