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Engineering Active Sites of Polyaniline for AlCl2 + Storage in an Aluminum-Ion Battery.
Wang, Shuai; Huang, Shuo; Yao, Minjie; Zhang, Yan; Niu, Zhiqiang.
Afiliação
  • Wang S; Key Laboratory of Advanced Energy Materials Chemistry, (Ministry of Education), Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
  • Huang S; Key Laboratory of Advanced Energy Materials Chemistry, (Ministry of Education), Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
  • Yao M; Key Laboratory of Advanced Energy Materials Chemistry, (Ministry of Education), Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
  • Zhang Y; Key Laboratory of Advanced Energy Materials Chemistry, (Ministry of Education), Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
  • Niu Z; Key Laboratory of Advanced Energy Materials Chemistry, (Ministry of Education), Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
Angew Chem Int Ed Engl ; 59(29): 11800-11807, 2020 Jul 13.
Artigo em Inglês | MEDLINE | ID: mdl-32301196
ABSTRACT
The reversible capacity of AlCl4 - intercalation/de-intercalation in conventional cathodes of aluminum-ion batteries (AIBs) is difficult to improve due to the large size of AlCl4 - anions. Therefore, it is highly desirable to realize the intercalation/de-intercalation of smaller Al-based ions. Here, we fabricated polyaniline/single-walled carbon nanotubes (PANI/SWCNTs) composite films and protonated the PANI nanorods. The protonation endows PANI with more active sites and enhanced conductivity. Hyper self-protonated PANI (PANI(H+ )) exhibits reversible AlCl2 + intercalation/de-intercalation during the discharge/charge process. As a result, the discharge capacity of the Al/PANI(H+ ) battery is twice as high as that of the initial composite films. PANI(H+ )@SWCNT electrodes also have a stable cycling life with only 0.003 % capacity decay per cycle over 8000 cycles. Owing to the excellent mechanical properties, PANI(H+ )@SWCNT composite films can act as the electrodes of flexible AIBs.

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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Revista: Angew Chem Int Ed Engl Ano de publicação: 2020 Tipo de documento: Artigo