Self‐Adaptive Re‐Organization Enables Polythiophene as an Extraordinary Cathode Material for Aluminum‐Ion Batteries with a Cycle Life of 100 000 Cycles

Zhang, Junfei; Wu, Yunling; Liu, Miao; Huang, Lu; Li, Yanguang; Wu, Yingpeng

doi:10.1002/ange.202215408

Cited by 3 publications

(2 citation statements)

References 52 publications

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“…PPTZ-AQ and the reported organic cathodes (Poly(nitropyrene-co-pyrene) 52 , PANI@SWCNT 18 , 2D Cu-MOF 53 , N 4 54 , TBPQ 55 , PQ-Δ-HY 11 , PPP 56 , X-PVMPT 39 , PVBPX 57 , PYTQ 58 , PT 14 , TCPP 59 , PAHs 15 , PAQS 13 , PyPz 45 ) with high active mass loadings in rechargeable aluminum batteries. (g) The rate capability of PPTZ-AQ cathode with an active mass loading of 13.1 mg cm −2 .…”

Section: Supplementary Filesmentioning

confidence: 98%

“…11,12 In addition, the reversible diffusion of chloroaluminate ions is facilitated by the moderate intermolecular interactions of organic materials. 11,13 Motivated by the above advantages, considerable efforts have been devoted to identifying organic hosting materials among various classes, including conductive polymers, 14 polycyclic aromatic hydrocarbons 15 as well as conjugated carbonyl, 13 imine, 16 azo 17 and quaternary ammonium 18 compounds. Albeit signi cant progress achieved, the use of organic cathodes in RABs faces challenges.…”

Section: Introductionmentioning

confidence: 99%

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Regulating the Double-Way Traffic of Cations and Anions in Ambipolar Polymer Cathodes for Sustainable Aluminum Dual-Ion Batteries

Jiang,

Luo,

Zhang

et al. 2024

Preprint

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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, we synthetically connect electron donors 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, 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 oC. Our findings exemplify the exploration of high-performing conjugated polymer cathodes for RABs through rational structural design.

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Section: Supplementary Filesmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Regulating the Double-Way Traffic of Cations and Anions in Ambipolar Polymer Cathodes for Sustainable Aluminum Dual-Ion Batteries

Jiang,

Luo,

Zhang

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

Regulating the Double‐Way Traffic of Cations and Anions in Ambipolar Polymer Cathodes for High‐Performing Aluminum Dual‐Ion Batteries

Luo,

Zhang,

et al. 2024

Advanced Materials

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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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Boosting Aluminum Storage in Highly Stable Covalent Organic Frameworks with Abundant Accessible Carbonyl Groups

Peng,

Baktash,

Alghamdi

et al. 2024

Advanced Energy Materials

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Aluminum batteries employing organic electrode materials present an appealing avenue for sustainable and large‐scale energy storage. Nevertheless, conventional organic materials encounter limitations due to their restricted active sites, known instability, and sluggish redox kinetics. In this study, a redox‐active covalent organic framework supported by CNT is reported, enriched with substantial C═O groups, as an advanced cathode material for Al‐organic batteries. Theoretical simulation and ex situ analysis unveil the pivotal roles of C═O groups in effectively storing AlCl2+. As a result, Al batteries with the organic cathode exhibit a specific capacity of 290 mAh g−1 at 0.2 A g−1 and outstanding rate performance. Furthermore, it retains a reversible capacity of 170 mAh g−1 even after 32 000 cycles at 10 A g−1 and attains an energy density of 389 Wh kg−1. The remarkable performance stems not only from the abundant C═O and C─N groups enabling the storage of multiple AlCl2+ by the favorable pseudocapacitive process, but also from the synergistic interplay between the robust COF network and the conductive CNT channels that significantly enhances structural stability and accelerates ion/electron diffusion. This work stands to inspire further research in the pursuit of stable organic cathodes, fostering designs with plentiful accessible redox‐active sites to boost energy storage capabilities.

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Self‐Adaptive Re‐Organization Enables Polythiophene as an Extraordinary Cathode Material for Aluminum‐Ion Batteries with a Cycle Life of 100 000 Cycles

Cited by 3 publications

References 52 publications

Regulating the Double-Way Traffic of Cations and Anions in Ambipolar Polymer Cathodes for Sustainable Aluminum Dual-Ion Batteries

Regulating the Double-Way Traffic of Cations and Anions in Ambipolar Polymer Cathodes for Sustainable Aluminum Dual-Ion Batteries

Regulating the Double‐Way Traffic of Cations and Anions in Ambipolar Polymer Cathodes for High‐Performing Aluminum Dual‐Ion Batteries

Boosting Aluminum Storage in Highly Stable Covalent Organic Frameworks with Abundant Accessible Carbonyl Groups

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