4.6 Article

Integrated SnO2 nanorod array with polypyrrole coverage for high-rate and long-life lithium batteries

Journal

PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 17, Issue 12, Pages 7619-7623

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cp00150a

Keywords

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Funding

  1. National Basic Research Program of China [2013CB934103, 2012CB933003]
  2. International Science & Technology Cooperation Program of China [2013DFA50840]
  3. National Natural Science Foundation of China [51302203, 51272197]
  4. National Science Fund for Distinguished Young Scholars [51425204]
  5. Hubei Science Fund for Distinguished Young Scholars [2014CFA035]
  6. Fundamental Research Funds for the Central Universities [143201003, 2014-VII-007, 2014-YB-001, 2014-YB-002, 2014-ZY-016]
  7. Students Innovation and Entrepreneurship Training Program [20141049701008]

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Conversion/alloying reactions, in which more lithium ions are involved, are severely handicapped by the dramatic volume changes. A facile and versatile strategy has been developed for integrating the SnO2 nanorod array in the PPy nanofilm for providing a flexible confinement for anchoring each nanorod and maintaining the entire structural integrity and providing sustainable contact; therefore, exhibiting much more stable cycling stability (701 mA h g(-1) after 300 cycles) and better high-rate capability (512 mA h g(-1) at 3 A g(-1)) when compared with the core-shell SnO2-PPy NA.

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