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Regulating the Double-Way Traffic of Cations and Anions in Ambipolar Polymer Cathodes for High-Performing Aluminum Dual-Ion Batteries.
Luo, Lian-Wei; Zhang, Chong; Ma, Wenyan; Han, Changzhi; Ai, Xuan; Chen, Yu; Xu, Yunhua; Ji, Xiulei; Jiang, Jia-Xing.
Afiliación
  • Luo LW; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710062, P. R. China.
  • Zhang C; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710062, P. R. China.
  • Ma W; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710062, P. R. China.
  • Han C; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710062, P. R. China.
  • Ai X; Key Laboratory of Optoelectronic Chemical Materials and Devices (Ministry of Education), School of Optoelectronic Materials & Technology, Jianghan University, Wuhan, 430056, P. R. China.
  • Chen Y; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710062, P. R. China.
  • Xu Y; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710062, P. R. China.
  • Ji X; School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, P. R. China.
  • Jiang JX; Department of Chemistry, Oregon State University, Corvallis, OR, 97331-4003, USA.
Adv Mater ; : e2406106, 2024 Aug 06.
Article en En | MEDLINE | ID: mdl-39108043
ABSTRACT
The strong Coulombic interactions between Al3+ and traditional inorganic crystalline cathodes present a significant obstacle in developing high-performance rechargeable aluminum batteries (RABs) that hold promise for safe and sustainable stationary energy storage. While accommodating chloroaluminate ions (AlCl4 -, AlCl2+, etc.) in redox-active organic compounds offers a promising solution for RABs, the issues of dissolution and low ionic/electronic conductivities plague the development of organic cathodes. Herein, electron donors are synthetically connected with acceptors to create crosslinked, bipolar-conjugated polymer cathodes. These cathodes exhibit overlapped redox potential ranges for both donors and acceptors in highly concentrated AlCl3-based ionic liquid electrolytes. This approach strategically enables on-site doping of the polymer backbones during redox reactions involving both donor and acceptor units, thereby enhancing the electron/ion transfer kinetics within the resultant polymer cathodes. Based on the optimal donor/acceptor combination, the bipolar polymer cathodes can deliver a high specific capacity of 205 mAh g-1 by leveraging the co-storage of AlCl4 - and AlCl2+. The electrodes exhibit excellent rate performance, a stable cycle life of 60 000 cycles, and function efficiently at high mass loadings, i.e., 100 mg cm-2, and at low temperatures, i.e., -30 °C. The findings exemplify the exploration of high-performing conjugated polymer cathodes for RABs through rational structural design.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Adv Mater Asunto de la revista: BIOFISICA / QUIMICA Año: 2024 Tipo del documento: Article Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Adv Mater Asunto de la revista: BIOFISICA / QUIMICA Año: 2024 Tipo del documento: Article Pais de publicación: Alemania