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Going Nano with Confined Effects to Construct Pomegranate-like Cathode for High-Energy and High-Power Lithium-Ion Batteries.
ACS Appl Mater Interfaces 2019; 11(32):28934-28942AA

Abstract

Pomegranate-like Li3V2(PO4)3@C (LVP@C) cathode materials are fabricated through confined effect helped by the vacuum-assisted capillary action. The performance of LixV2(PO4)3 (x = 0-5) at an extended working voltage of 1.2-4.8 V has been studied by operando X-ray powder diffraction and hybrid functional density functional theory (DFT) calculation. The DFT calculation results suggest that Li3V2(PO4)3 can be intercalated with another two Li+ with a stable crystalline structure, which improves the specific capacity of LVP significantly. The cathode exhibits a specific capacity of 320 mAh g-1 with an energy density of 736 Wh kg-1, which is one of the best performances for intercalation cathode materials for Li-ion batteries to our knowledge. Besides, the cathode showed excellent rate capability. In the working potential of 3.0-4.8 V, it exhibits a high specific capacity of 195 mAh g-1 at 0.2 C, and even at a high rate of 30 C, it still delivers the specific capacity of 145 mAh g-1 with a power density of 15.93 kW kg-1. The good performance is mainly attributed to the unique pomegranate structure, which can provide continuous three-dimensional conductive networks for fast electron and Li-ion transfer. This paper provides a new strategy for synthesizing other cathode or anode materials with high energy and power density.

Authors+Show Affiliations

School of Light Industry and Chemical Engineering , Dalian Polytechnic University , Dalian 116034 , China.Institute for Interdisciplinary Research , Jianghan University , Wuhan 430056 , China.Division of Energy Storage, Dalian Institute of Chemical Physics , Chinese Academy of Sciences , Zhongshan Road 457 , Dalian 116023 , China.School of Light Industry and Chemical Engineering , Dalian Polytechnic University , Dalian 116034 , China.Division of Energy Storage, Dalian Institute of Chemical Physics , Chinese Academy of Sciences , Zhongshan Road 457 , Dalian 116023 , China.Division of Energy Storage, Dalian Institute of Chemical Physics , Chinese Academy of Sciences , Zhongshan Road 457 , Dalian 116023 , China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31335114

Citation

Cheng, Yi, et al. "Going Nano With Confined Effects to Construct Pomegranate-like Cathode for High-Energy and High-Power Lithium-Ion Batteries." ACS Applied Materials & Interfaces, vol. 11, no. 32, 2019, pp. 28934-28942.
Cheng Y, Sang H, Jiang Q, et al. Going Nano with Confined Effects to Construct Pomegranate-like Cathode for High-Energy and High-Power Lithium-Ion Batteries. ACS Appl Mater Interfaces. 2019;11(32):28934-28942.
Cheng, Y., Sang, H., Jiang, Q., Wang, H., Zhang, H., & Li, X. (2019). Going Nano with Confined Effects to Construct Pomegranate-like Cathode for High-Energy and High-Power Lithium-Ion Batteries. ACS Applied Materials & Interfaces, 11(32), pp. 28934-28942. doi:10.1021/acsami.9b09335.
Cheng Y, et al. Going Nano With Confined Effects to Construct Pomegranate-like Cathode for High-Energy and High-Power Lithium-Ion Batteries. ACS Appl Mater Interfaces. 2019 Aug 14;11(32):28934-28942. PubMed PMID: 31335114.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Going Nano with Confined Effects to Construct Pomegranate-like Cathode for High-Energy and High-Power Lithium-Ion Batteries. AU - Cheng,Yi, AU - Sang,Hongqian, AU - Jiang,Qike, AU - Wang,Haisong, AU - Zhang,Huamin, AU - Li,Xianfeng, Y1 - 2019/08/02/ PY - 2019/7/25/pubmed PY - 2019/7/25/medline PY - 2019/7/24/entrez KW - Li-ion battery KW - cathode material KW - high energy density KW - high power density KW - pomegranate-like structure SP - 28934 EP - 28942 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 11 IS - 32 N2 - Pomegranate-like Li3V2(PO4)3@C (LVP@C) cathode materials are fabricated through confined effect helped by the vacuum-assisted capillary action. The performance of LixV2(PO4)3 (x = 0-5) at an extended working voltage of 1.2-4.8 V has been studied by operando X-ray powder diffraction and hybrid functional density functional theory (DFT) calculation. The DFT calculation results suggest that Li3V2(PO4)3 can be intercalated with another two Li+ with a stable crystalline structure, which improves the specific capacity of LVP significantly. The cathode exhibits a specific capacity of 320 mAh g-1 with an energy density of 736 Wh kg-1, which is one of the best performances for intercalation cathode materials for Li-ion batteries to our knowledge. Besides, the cathode showed excellent rate capability. In the working potential of 3.0-4.8 V, it exhibits a high specific capacity of 195 mAh g-1 at 0.2 C, and even at a high rate of 30 C, it still delivers the specific capacity of 145 mAh g-1 with a power density of 15.93 kW kg-1. The good performance is mainly attributed to the unique pomegranate structure, which can provide continuous three-dimensional conductive networks for fast electron and Li-ion transfer. This paper provides a new strategy for synthesizing other cathode or anode materials with high energy and power density. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/31335114/Going_Nano_with_Confined_Effects_to_Construct_Pomegranate-like_Cathode_for_High-Energy_and_High-Power_Lithium-Ion_Batteries L2 - https://dx.doi.org/10.1021/acsami.9b09335 DB - PRIME DP - Unbound Medicine ER -