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A Reduced Graphene Oxide/Disodium Terephthalate Hybrid as a High-Performance Anode for Sodium-Ion Batteries.
Cao, Tengfei; Lv, Wei; Zhang, Si-Wei; Zhang, Jun; Lin, Qiaowei; Chen, Xiangrong; He, Yanbing; Kang, Fei-Yu; Yang, Quan-Hong.
Afiliação
  • Cao T; Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen, 518055, P. R. China.
  • Lv W; Engineering Laboratory for Functionalized Carbon Materials and Baotou Graphene Innovation Center (Shenzhen), Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, P. R. China.
  • Zhang SW; Engineering Laboratory for Functionalized Carbon Materials and Baotou Graphene Innovation Center (Shenzhen), Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, P. R. China.
  • Zhang J; Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen, 518055, P. R. China.
  • Lin Q; Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen, 518055, P. R. China.
  • Chen X; Engineering Laboratory for Functionalized Carbon Materials and Baotou Graphene Innovation Center (Shenzhen), Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, P. R. China.
  • He Y; Engineering Laboratory for Functionalized Carbon Materials and Baotou Graphene Innovation Center (Shenzhen), Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, P. R. China.
  • Kang FY; Engineering Laboratory for Functionalized Carbon Materials and Baotou Graphene Innovation Center (Shenzhen), Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, P. R. China.
  • Yang QH; Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen, 518055, P. R. China.
Chemistry ; 23(65): 16586-16592, 2017 Nov 21.
Article em En | MEDLINE | ID: mdl-28921698
ABSTRACT
As a promising candidate for large-scale energy storage systems, sodium-ion batteries (SIBs) are experiencing a rapid development. Organic conjugated carboxylic acid anodes not only have tailorable electrochemical properties but also are easily accessible. However, the low stability and electrical conductivity hamper their practical applications. In this study, disodium terephthalate (Na2 TP), the most favorable organic conjugated carboxylic acid anode material for SIBs, was proposed to integrate with graphene oxide (GO) by an anti-solvent precipitation process, which ensures the uniform and tight coating of GO on the Na2 TP surface. GO is electrochemically reduced during the first several cycles of the electrochemical measurement, which buffers the volume change and improves the electrical conductivity of Na2 TP, resulting in a better cyclic and rate performance. The incorporation of only 5 wt % GO onto Na2 TP leads to a reversible capability of 235 mA h g-1 after 100 cycles at a current rate of 0.1 C, which is the best among the state of the art organic anodes for SIBs. The one-step synthesis together with the low costs of the raw materials show a promise for the scalable preparation of anode materials for practical SIBs.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Chemistry Assunto da revista: QUIMICA Ano de publicação: 2017 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Chemistry Assunto da revista: QUIMICA Ano de publicação: 2017 Tipo de documento: Article