The mechanism of bulky imidazolium cation storage in dual graphite batteries: a spectroscopic and theoretical investigation

Lv, Zichuan; Cao, Haining; Zhou, Shuai; Geng, Kaihao; Du, Huiping; Bian, Yinghui; Chen, Hui; Huang, Hao; Li, Yuxia; Lin, Meng

doi:10.1039/d1ta00103e

Cited by 9 publications

(7 citation statements)

References 60 publications

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“…According to the first‐principles calculations, the total energy of intercalation models is −962.2 eV, which is less than the total energy of the adsorption model (−961.0 eV). This proves that the anions intercalation reaction typically occurs instead of the adsorption process, which is reasonably consistent with the principles of physics [58] . It is crucial to improve the reversible intercalation/deintercalation of anions to achieve a higher energy density for DGBs+K.…”

Section: Resultssupporting

confidence: 82%

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In‐situ Sacrificial Positive Additive Strategy for the Construction of a Stable Negative Interface in Dual Graphite Batteries

et al. 2022

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Due to their merits of affordability, safety, and environmental friendliness, dual graphite batteries (DGBs) have drawn widespread interest as novel energy storage devices. Nevertheless, the development of DGBs is plagued by inferior cyclic stability that arise from the irreversible loss of cations and the anion‐cation crosstalk during the formation of an negative interface. We proposed an in‐situ sacrificial positive additive strategy to enhance the electrochemical performances, based on the decomposability of potassium oxalate monohydrate (K2C2O4⋅H2O). The experimental and computational results show that the positive additive can add cations to support a stable negative interface and suppress the anion‐cation crosstalk. The as‐constructed DGBs with K2C2O4⋅H2O deliver high‐rate capability (31.8 mAh g−1 at 3.0 C) and excellent cyclic stability (∼84.1 % capacity retention after 180 cycles). This work provides a new opportunity of negative interface construction for propelling the commercial evolution of the advanced DGBs.

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Section: Resultssupporting

confidence: 82%

“…This proves that the anions intercalation reaction typically occurs instead of the adsorption process, which is reasonably consistent with the principles of physics. [58] It is crucial to improve the reversible intercalation/deintercalation of anions to achieve a higher energy density for DGBs + K.…”

Section: Chemelectrochemmentioning

confidence: 99%

In‐situ Sacrificial Positive Additive Strategy for the Construction of a Stable Negative Interface in Dual Graphite Batteries

et al. 2022

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“…Hence, those data suggested that graphite surface defects could be introduced not only during sonication (minor) but also during the charge/discharge cycling of DIBs (major). [ 24 ] The presence of defects is known to hinder the intercalation of

{AlCl}_{4}^{-}

between graphene layers and thus decrease the specific capacity of the graphite electrode. (DMPI + )(

{AlCl}_{4}^{-}

) IL electrolyte was mainly kept in the glass fiber separator of spent DIBs (Figure 2g).…”

Section: Resultsmentioning

confidence: 99%

Sustainable Recycling of Spent Ionic Liquid Dual‐Ion Batteries

Lin

Hsieh

et al. 2022

Energy Tech

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Ionic liquid (IL) dual‐ion batteries (DIBs) are widely studied as advanced electrochemical systems because of their potential nonflammability, environmental friendliness, and high working voltage. Recycling and reusing valuable IL electrolytes and metallic Ni current collectors might boost the application of IL DIBs. Herein, the preliminary results of the recycling of a spent DIB with 1,2‐dimethyl‐3‐propylimidazolium chloroaluminate (DMPI+)(AlCl4−) electrolyte are reported. Recovery rates of most components (graphite flakes, Ni current collector, and so on) of the DIB reach a range of 84–98%, whereas the IL electrolyte is only 24%. Optimistically, the cost of an IL DIB using recycled components can be reduced by around 68%. Thus, developing the recycling processes might pave the way to increase the competitiveness of IL DIBs for grid‐scale energy storage.

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Section: Electrode Design For Dibsmentioning

confidence: 99%

“…Cations and anions of the ILs can also be intercalated into the host materials, though limited study has been observed on this concept both experimentally and computationally. [25,27,[70][71][72] In general, carbonaceous host materials such as graphite and polycyclic aromatic hydrocarbons (PAHs) are used as electrodes, which have enough space to accommodate the large size cations and anions of ILs. [50] We have conceptually demonstrated the dual graphite battery (DGB) with DMPI-AlCl 4 ionic liquid electrolyte, upon mixing of 1 : 1 ratio of 1,2-dimethyl-3propyl imidazolium chloride (DMPIÀ Cl) and AlCl 3 salt.…”

Section: Ionic Liquid Intercalating Electrodesmentioning

confidence: 99%

Recent Advancements in Devising Computational Strategies for Dual‐Ion Batteries

2022

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Dual-ion batteries (DIBs) have been considered a viable alternative to increasingly costly and hazard-prone lithium-ion batteries (LIBs), which have reached a level of saturation. DIBs differ from LIBs in the way that the cations and anions originate from the electrolyte, thus signifying the active role played by electrolyte. In this Review, the major developments in research in the field of DIBs are summarized with a major emphasis on computational approaches in this direction. The various computational methods for understanding and designing electrodes are discussed. The advancements in electrode and electrolyte design for efficient DIBs are highlighted. Further, the ways to investigate solid-electrolyte interphase formation through simulations to comprehend the role of various components are discussed. Finally, directions are given on which future computational research can be carried out to design futuristic DIBs to provide useful guidelines to the researchers to understand and design DIBs.

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The mechanism of bulky imidazolium cation storage in dual graphite batteries: a spectroscopic and theoretical investigation

Abstract: Dual graphite batteries (DGBs) employ graphite as an intercalation host and store energy using the redox reactions of ionic liquid electrolyte–derived ions with graphite electrodes. As bulky (e.g., imidazolium-based) cation...

Cited by 9 publications

References 60 publications

In‐situ Sacrificial Positive Additive Strategy for the Construction of a Stable Negative Interface in Dual Graphite Batteries

In‐situ Sacrificial Positive Additive Strategy for the Construction of a Stable Negative Interface in Dual Graphite Batteries

Sustainable Recycling of Spent Ionic Liquid Dual‐Ion Batteries

Recent Advancements in Devising Computational Strategies for Dual‐Ion Batteries

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