Novel lithium titanate-graphene hybrid containing two graphene conductive frameworks for lithium-ion battery with excellent electrochemical performance

Ruiyi, Li; Tengyuan, Chen; Beibei, Sun; Zaijun, Li; Zhiquo, Gu; Guangli, Wang; Junkang, Liu

doi:10.1016/J.MATERRESBULL.2015.06.048

Title: Novel lithium titanate-graphene hybrid containing two graphene conductive frameworks for lithium-ion battery with excellent electrochemical performance

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Abstract

Graphical abstract: We developed a new Novel lithium titanate-graphene nanohybrid containing two graphene conductive frameworks. The unique architecture creates fast electron transfer and rapid mass transport of electrolyte. The hybrid electrode provides excellent electrochemical performances for lithium-ion batteries, including high specific capacity, outstanding rate capability and intriguing cycling stability. - Highlights: • We reported a new LTO-graphene nanohybrid containing two graphene conductive frameworks. • One graphene framework greatly improves the electrical conductivity of LTO crystal. • Another graphene framework enhances electrical conductivity of between LTO crystals and electrolyte transport. • The unique architecture creates big tap density, ultrafast electron transfer and rapid mass transport. • The hybrid electrode provides excellent electrochemical performance for lithium-ion batteries. - ABSTRACT: The paper reported the synthesis of lithium titanate(LTO)-graphene hybrid containing two graphene conductive frameworks (G@LTO@G). Tetrabutyl titanate and graphene were dispersed in tertbutanol and heated to reflux state by microwave irradiation. Followed by adding lithium acetate to produce LTO precursor/graphene (p-LTO/G). The resulting p-LTO/G offers homogeneous morphology and ultra small size. All graphene sheets were buried in the spherical agglomerates composed of primitive particles through the second agglomeration. The p-LTO/G was calcined to LTO@graphene (LTO@G). To obtain G@LTO@G, the LTO@G was further hybridizedmore »« less

Authors:

Ruiyi, Li; Tengyuan, Chen; Beibei, Sun ^[1]; Zaijun, Li ^[1]; Zhiquo, Gu; Guangli, Wang; Junkang, Liu ^[1]

School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122 (China)

Publication Date:: Thu Oct 15 00:00:00 EDT 2015

OSTI Identifier:: 22475980

Resource Type:: Journal Article

Journal Name:: Materials Research Bulletin

Additional Journal Information:: Journal Volume: 70; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408

Country of Publication:: United States

Language:: English

Subject:: 77 NANOSCIENCE AND NANOTECHNOLOGY; AGGLOMERATION; CAPACITY; CRYSTALS; DISTRIBUTION; ELECTRIC BATTERIES; ELECTRIC CONDUCTIVITY; ELECTROCHEMISTRY; ELECTRODES; ELECTROLYTES; ELECTRON TRANSFER; ENERGY STORAGE; GRAPHENE; LITHIUM IONS; LITHIUM TITANATES; MASS; MICROWAVE RADIATION; POROUS MATERIALS; STABILITY; SYNTHESIS

Citation Formats


                    Ruiyi, Li, Tengyuan, Chen, Beibei, Sun, Zaijun, Li, Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, Wuxi 214122, Zhiquo, Gu, Guangli, Wang, and Junkang, Liu. Novel lithium titanate-graphene hybrid containing two graphene conductive frameworks for lithium-ion battery with excellent electrochemical performance.  United States: N. p., 2015. 
        Web.  doi:10.1016/J.MATERRESBULL.2015.06.048.

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                    Ruiyi, Li, Tengyuan, Chen, Beibei, Sun, Zaijun, Li, Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, Wuxi 214122, Zhiquo, Gu, Guangli, Wang, & Junkang, Liu. Novel lithium titanate-graphene hybrid containing two graphene conductive frameworks for lithium-ion battery with excellent electrochemical performance.  United States.  https://doi.org/10.1016/J.MATERRESBULL.2015.06.048

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                    Ruiyi, Li, Tengyuan, Chen, Beibei, Sun, Zaijun, Li, Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, Wuxi 214122, Zhiquo, Gu, Guangli, Wang, and Junkang, Liu. 2015.  
        "Novel lithium titanate-graphene hybrid containing two graphene conductive frameworks for lithium-ion battery with excellent electrochemical performance".  United States.  https://doi.org/10.1016/J.MATERRESBULL.2015.06.048.

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@article{osti_22475980,

  title        = {Novel lithium titanate-graphene hybrid containing two graphene conductive frameworks for lithium-ion battery with excellent electrochemical performance},

  author       = {Ruiyi, Li and Tengyuan, Chen and Beibei, Sun and Zaijun, Li and Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, Wuxi 214122 and Zhiquo, Gu and Guangli, Wang and Junkang, Liu},

  abstractNote = {Graphical abstract: We developed a new Novel lithium titanate-graphene nanohybrid containing two graphene conductive frameworks. The unique architecture creates fast electron transfer and rapid mass transport of electrolyte. The hybrid electrode provides excellent electrochemical performances for lithium-ion batteries, including high specific capacity, outstanding rate capability and intriguing cycling stability. - Highlights: • We reported a new LTO-graphene nanohybrid containing two graphene conductive frameworks. • One graphene framework greatly improves the electrical conductivity of LTO crystal. • Another graphene framework enhances electrical conductivity of between LTO crystals and electrolyte transport. • The unique architecture creates big tap density, ultrafast electron transfer and rapid mass transport. • The hybrid electrode provides excellent electrochemical performance for lithium-ion batteries. - ABSTRACT: The paper reported the synthesis of lithium titanate(LTO)-graphene hybrid containing two graphene conductive frameworks (G@LTO@G). Tetrabutyl titanate and graphene were dispersed in tertbutanol and heated to reflux state by microwave irradiation. Followed by adding lithium acetate to produce LTO precursor/graphene (p-LTO/G). The resulting p-LTO/G offers homogeneous morphology and ultra small size. All graphene sheets were buried in the spherical agglomerates composed of primitive particles through the second agglomeration. The p-LTO/G was calcined to LTO@graphene (LTO@G). To obtain G@LTO@G, the LTO@G was further hybridized with graphene. The as-prepared G@LTO@G shows well-defined three-dimensional structure and hierarchical porous distribution. Its unique architecture creates big tap density, fast electron transfer and rapid electrolyte transport. As a result, the G@LTO@G provides high specific capacity (175.2 mA h g{sup −1} and 293.5 mA cm{sup −3}), outstanding rate capability (155.7 mAh g{sup −1} at 10C) and intriguing cycling stability (97.2% capacity retention at 5C after 1000 cycles)},

  doi          = {10.1016/J.MATERRESBULL.2015.06.048},

  url          = {https://www.osti.gov/biblio/22475980},
  journal      = {Materials Research Bulletin},

  issn         = {0025-5408},

  number       = ,

  volume       = 70,

  place        = {United States},

  year         = {Thu Oct 15 00:00:00 EDT 2015},

  month        = {Thu Oct 15 00:00:00 EDT 2015}

}

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