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author:

Hong, Zhensheng (Hong, Zhensheng.) [1] | Zhou, Kaiqiang (Zhou, Kaiqiang.) [2] | Zhang, Junwen (Zhang, Junwen.) [3] | Huang, Zhigao (Huang, Zhigao.) [4] | Wei, Mingdeng (Wei, Mingdeng.) [5]

Indexed by:

EI

Abstract:

With the aim of enhancing the electrochemical kinetics and capacity of the TiO2 electrode for Na ion batteries (NIBs), we have designed a hybrid material of carbon-coated TiO2 mesocrystals anchored on reduced graphene oxide (TiO2@C-rGO). Such hybrid nanostructures are fabricated through a facile one-step route including in situ growth of oriented self-assembly of TiO2 mesocrystals on GO. TiO2@C-rGO possesses a very large surface area (279 m2 g-1), mesoporous nature, and single-crystal-like structure. It is also found that the capacity of TiO2 electrode for NIBs could be improved by carbon coating at a low current rate, but pure TiO2 shows better rate performance than that of TiO2@C. Remarkably, the enhanced electrochemical kinetics and large capacity can be simultaneously achieved by designing hybrid material. The hybrid nanostructures exhibit a highly reversible capacity of 300 mAh g-1 at 100 mA g-1, superior rate capability, and long-term cycling stability (a stable capacity of 159 mAh g-1 can be maintained after 1000 cycles at 1 A g-1). The superior Na ion storage of TiO2@C-rGO is largely ascribed to the robust architecture of well-dispersed carbon-coated mesoporous TiO2 mesocrystals anchored on conductive graphene network, leading to enhanced electrochemical kinetics and offering enough active sites for the Na ion to locate. © 2016 American Chemical Society.

Keyword:

Crystal structure Electrochemical electrodes Graphene Hybrid materials Ions Kinetics Nanostructures Single crystals Titanium dioxide

Community:

  • [ 1 ] [Hong, Zhensheng]Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou, Fujian; 350117, China
  • [ 2 ] [Hong, Zhensheng]Fujian Prov. Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Xiamen; 361005, China
  • [ 3 ] [Zhou, Kaiqiang]Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou, Fujian; 350117, China
  • [ 4 ] [Zhou, Kaiqiang]Fujian Prov. Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Xiamen; 361005, China
  • [ 5 ] [Zhang, Junwen]Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou, Fujian; 350117, China
  • [ 6 ] [Zhang, Junwen]Shenzhen Key Laboratory of Transformation Optics and Spatial Modulation, Kuang-Chi Institute of Advanced Technology, Shenzhen, Guangdong; 518057, China
  • [ 7 ] [Huang, Zhigao]Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou, Fujian; 350117, China
  • [ 8 ] [Huang, Zhigao]Fujian Prov. Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Xiamen; 361005, China
  • [ 9 ] [Wei, Mingdeng]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, Fujian; 350002, China

Reprint 's Address:

  • [hong, zhensheng]fujian provincial key laboratory of quantum manipulation and new energy materials, college of physics and energy, fujian normal university, fuzhou, fujian; 350117, china;;[hong, zhensheng]fujian prov. collaborative innovation center for optoelectronic semiconductors and efficient devices, xiamen; 361005, china

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Source :

Crystal Growth and Design

ISSN: 1528-7483

Year: 2016

Issue: 11

Volume: 16

Page: 6605-6612

4 . 0 5 5

JCR@2016

3 . 2 0 0

JCR@2023

ESI HC Threshold:235

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 21

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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