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Title: Chemical Synthesis of 3D Graphene-Like Cages for Sodium-Ion Batteries Applications

Abstract

Sodium (Na) super ion conductor structured Na3V2(PO4)3 (NVP) is extensively explored as cathode material for sodium-ion batteries (SIBs) due to its large interstitial channels for Na+ migration. The synthesis of 3D graphene-like structure coated on NVP nanoflakes arrays via a one-pot, solid-state reaction in molten hydrocarbon is reported. The NVP nanoflakes are uniformly coated by the in situ generated 3D graphene-like layers with the thickness of 3 nm. As a cathode material, graphene covered NVP nanoflakes exhibit excellent electrochemical performances, including close to theoretical reversible capacity (115.2 mA h g-1 at 1 C), superior rate capability (75.9 mA h g-1 at 200 C), and excellent cyclic stability (62.5% of capacity retention over 30000 cycles at 50 C). Furthermore, the 3D graphene-like cages after removing NVP also serve as a good anode material and deliver a specific capacity of 242.5 mA h g-1 at 0.1 A g-1. The full SIB using these two cathode and anode materials delivers a high specific capacity (109.2 mA h g-1 at 0.1 A g-1) and good cycling stability (77.1% capacity retention over 200 cycles at 0.1 A g-1).

Authors:
 [1];  [1];  [1];  [1];  [1];  [2];  [3];  [1]
  1. Central South University
  2. University of Washington
  3. BATTELLE (PACIFIC NW LAB)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1510981
Report Number(s):
PNNL-SA-136333
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Advanced Energy Materials
Additional Journal Information:
Journal Volume: 7; Journal Issue: 20
Country of Publication:
United States
Language:
English

Citation Formats

Cao, Xinxin, Pan, Anqiang, Liu, Sainin, Zhou, Jiang, Li, Site, Cao, Guozhong, Liu, Jun, and Liang, Shuquan. Chemical Synthesis of 3D Graphene-Like Cages for Sodium-Ion Batteries Applications. United States: N. p., 2017. Web. doi:10.1002/aenm.201700797.
Cao, Xinxin, Pan, Anqiang, Liu, Sainin, Zhou, Jiang, Li, Site, Cao, Guozhong, Liu, Jun, & Liang, Shuquan. Chemical Synthesis of 3D Graphene-Like Cages for Sodium-Ion Batteries Applications. United States. doi:10.1002/aenm.201700797.
Cao, Xinxin, Pan, Anqiang, Liu, Sainin, Zhou, Jiang, Li, Site, Cao, Guozhong, Liu, Jun, and Liang, Shuquan. Wed . "Chemical Synthesis of 3D Graphene-Like Cages for Sodium-Ion Batteries Applications". United States. doi:10.1002/aenm.201700797.
@article{osti_1510981,
title = {Chemical Synthesis of 3D Graphene-Like Cages for Sodium-Ion Batteries Applications},
author = {Cao, Xinxin and Pan, Anqiang and Liu, Sainin and Zhou, Jiang and Li, Site and Cao, Guozhong and Liu, Jun and Liang, Shuquan},
abstractNote = {Sodium (Na) super ion conductor structured Na3V2(PO4)3 (NVP) is extensively explored as cathode material for sodium-ion batteries (SIBs) due to its large interstitial channels for Na+ migration. The synthesis of 3D graphene-like structure coated on NVP nanoflakes arrays via a one-pot, solid-state reaction in molten hydrocarbon is reported. The NVP nanoflakes are uniformly coated by the in situ generated 3D graphene-like layers with the thickness of 3 nm. As a cathode material, graphene covered NVP nanoflakes exhibit excellent electrochemical performances, including close to theoretical reversible capacity (115.2 mA h g-1 at 1 C), superior rate capability (75.9 mA h g-1 at 200 C), and excellent cyclic stability (62.5% of capacity retention over 30000 cycles at 50 C). Furthermore, the 3D graphene-like cages after removing NVP also serve as a good anode material and deliver a specific capacity of 242.5 mA h g-1 at 0.1 A g-1. The full SIB using these two cathode and anode materials delivers a high specific capacity (109.2 mA h g-1 at 0.1 A g-1) and good cycling stability (77.1% capacity retention over 200 cycles at 0.1 A g-1).},
doi = {10.1002/aenm.201700797},
journal = {Advanced Energy Materials},
number = 20,
volume = 7,
place = {United States},
year = {2017},
month = {10}
}