Realizing a long lifespan aluminum-ion battery through the anchoring effect between Polythiophene and carboxyl modified carbon nanotube

Kong, Dongqing; Fan, Haodong; Ding, Xuefei; Hu, Haoyu; Zhou, Li; Li, Bin; Chi, Chunlei; Wang, Xiaoning; Wang, Yesheng; Wang, Xiaohui; Wang, Dandan; Shen, Yanxin; Qiu, Zhijian; Cai, Tonghui; Cui, Yongpeng; Ren, Yanguang; Li, Xuejin

doi:10.1016/j.electacta.2021.139212

Cited by 8 publications

(5 citation statements)

References 42 publications

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“…This result signifies the creation of uncontrolled ion agglomerations at the electrode. The contents of Al and S increase/decrease along during the charging/discharging processes, implying that the cooperation of both ions is engaged in the energy storage process . This change is consistent with the results of EDS mapping.…”

Section: Resultssupporting

confidence: 88%

“…The contents of Al and S increase/decrease along during the charging/ discharging processes, implying that the cooperation of both ions is engaged in the energy storage process. 118 This change is consistent with the results of EDS mapping. CNTs with perfect tubular structures have no active sites to store aluminate anions, and with the addition of Si, the structure of CNTs may partially open.…”

Section: Raman Spectroscopysupporting

confidence: 90%

“…The ratio for untreated electrodes changed after being loaded with Si, demonstrating a decrease in MWCNT formation intensified by the presence of more disordered carbon in the array. The I D / I G ratio for plain MWCNT electrodes and 1.1 Si/MWCNT composites increased after cycling or charging/discharging, proving that a large number of defects were present on the surface of the electrodes where ions are favorably stored into the graphene layers. − The 1.1 Si/MWCNT composites have a higher graphitization degree compared with the plain MWCNTs, which results from the microcrystalline structure of MWCNTs , shifting both D- and G-bands …”

Section: Resultsmentioning

confidence: 99%

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Investigation of Si-Coated Multiwalled Carbon Nanotubes as Potential Electrodes for Multivalent Metal-Ion Electrochemical Energy Storage Systems

et al. 2023

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In the present paper, we report the chemical vapor deposition of multiwall carbon nanotubes (MWCNTs) coating on stainless steel substrates and the coverage of the individual CNTs by a silicon (Si) thin layer. The study's goal is to create and evaluate electrochemically Si/MWCNT composites with varying Si loadings to act both as a mechanical support and electrical conducting path to the current collector. MWCNTs incorporated efficiently into the Si layer on their surface and aided Si's poor stability while maintaining its high-capacity values. The Si/ MWCNT composite electrodes operated in a wide potential window of 1.7 V with improved Q/V ratios (charge to voltage) and retention over cycling compared to plain MWCNTs and Si electrodes, despite the similar surface area. In addition, the composite electrodes displayed a larger integration area in cyclic voltammograms, distinct charge/discharge plateaus, and wider discharge potential, indicating a higher energy storage capacity and high relative voltammetric charge retention. In particular, the Si/ MWCNT electrodes demonstrated relative voltammetric charge retentions of 99.3% and 68% at 100 mV s −1 and stable Q/V ratios of 231 and 209 mF cm −2 at a current density of 2 mA cm −2 with retention maintained at 100% after 30 cycles in ZnSO 4 and Al 2 (SO 4 ) 3 aqueous electrolytes, respectively. Although the Q/V ratios may have distinct origins, we assumed that both electrolytes incorporate a mix of surface and bulk contributions. A combination of both ionic diffusion and pseudocapacitive behavior is displayed. Combined charge storage mechanisms are present at different electrode states, indicating the electrolyte ions' adsorption (surfacecontrolled) and insertion (diffusion-controlled) in the active sites of the composites. The results suggested that the pseudocapacitive nature combined with the reversible diffusion of ions during redox reactions worked synergistically to increase contributions to the overall Q/V ratios. The storage of ions is facilitated by the small ionic radius of Al 3+ (0.53 Å) and Zn 2+ (0.75 Å) ions. Diffusion coefficient values of Al 3+ (4.58 × 10 −11 cm 2 s −1 ) are higher than those of Zn 2+ (3.16 × 10 −11 cm 2 s −1 ) during oxidation but lower at reduction processes (6.02 × 10 −11 and 7.1 × 10 −11 cm 2 s −1 ). As a result, the Al 3+ ions are less effective while extracted with reduced reversibility than Zn 2+ ions. Agglomerations of smaller ions stored in electrodes might confine the extraction process and possibly the overall stability over intense cycling. The faradaic performance on the one side coupled with the semi-infinite diffusion and pseudocapacitive behavior could offer a promising utilization as working electrodes in Zn 2+ and Al 3+ ion hybrid energy storage systems.

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Section: Resultssupporting

confidence: 88%

Section: Raman Spectroscopysupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

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Investigation of Si-Coated Multiwalled Carbon Nanotubes as Potential Electrodes for Multivalent Metal-Ion Electrochemical Energy Storage Systems

et al. 2023

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“…For α‐PT, when charging, the peak intensity of C β −H (1045 cm −1 ) gradually decreased, indicate the weakening of the bond strength due to the AlCl 4 − insertion and its binding with C β −H to form H−Cl bonds (α‐PT‐AlCl 4 − ). At the same time, the peak intensity of C α =C β gradually decreased, due to the uneven distribution of electron clouds in the PT chains with the insertion AlCl 4 − [8d, 20] . During discharge, the increase in peak intensity indicates the reversibility of the reaction.…”

Section: Resultsmentioning

confidence: 99%

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

Zhang

Liu

et al. 2023

Angewandte Chemie

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Aluminum-ion batteries (AIBs) have attracted great attentions in recent years. Organic materials such as polythiophene (PT) are promising cathode for AIBs. However, the capacity and cyclic stability of conventional organic cathode such as PT are limited by the inadequate degree of reaction and the unstable nature of organic materials. To obtain high-performance organic cathode, a new PT with the ability of self-adaptive reorganization was prepared. During cycling, its molecular chain can be re-organized, and the polymerization mode will change from C α À C α (α-PT) to C β À C β (β-PT). This change leads to smaller steric hindrance and faster kinetics during ion insertion which can lower the reaction energy barrier and stabilize the molecular structure. Benefited by this, AIBs with this cathode can deliver a specific capacity of 180 mAh g À 1 (@2 A g À 1 ) and a superb stability of 100 000 cycles at 10 A g À 1 . High energy density and power density can also be achieved with this cathode.

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“…Therefore, effective alternative rechargeable battery technologies are urgently required to leverage the earth’s more abundant elements [ 5 ]. The potential of rechargeable aluminum-ion batteries (AIBs) for grid energy storage has been explored owing to aluminum’s high theoretical mass specific capacity of 2980 mAhg −1 induced by exchanging three electrons during the electrochemical reaction [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Aluminum-Ion Storage Properties of N-Doped Titanium Dioxide Electrode in Aqueous Aluminum-Ion Batteries

Jian,

Wu,

et al. 2024

Nanomaterials

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Aqueous aluminum-ion batteries (AIBs) have great potential as devices for future large-scale energy storage systems due to the cost efficiency, environmentally friendly nature, and impressive theoretical energy density of Al. However, currently, available materials used as anodes for aqueous AIBs are scarce. In this study, a novel sol-gel method was used to synthesize nitrogen-doped titanium dioxide (N-TiO2) as a potential anode material for AIBs in water. The annealed N-TiO2 showed a high discharge capacity of 43.2 mAh g−1 at a current density of 3 A g−1. Analysis of the electrode kinetics revealed that the N-TiO2 anodes exhibited rapid diffusion of aluminum ions, low resistance to charge transfer, and high electronic conductivity, enabling good rate performance. The successful implementation of a nitrogen-doping strategy provides a promising approach to enhance the electrochemical characteristics of electrode materials for aqueous AIBs.

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Realizing a long lifespan aluminum-ion battery through the anchoring effect between Polythiophene and carboxyl modified carbon nanotube

Cited by 8 publications

References 42 publications

Investigation of Si-Coated Multiwalled Carbon Nanotubes as Potential Electrodes for Multivalent Metal-Ion Electrochemical Energy Storage Systems

Investigation of Si-Coated Multiwalled Carbon Nanotubes as Potential Electrodes for Multivalent Metal-Ion Electrochemical Energy Storage Systems

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

Enhanced Aluminum-Ion Storage Properties of N-Doped Titanium Dioxide Electrode in Aqueous Aluminum-Ion Batteries

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