Nanomanufacturing of RGO‐CNT Hybrid Film for Flexible Aqueous Al‐Ion Batteries

Liu, Siliang; Wang, Panpan; Liu, Chang; Deng, Yida; Dou, Shuliang; Liu, Yingjun; Xu, Jie; Wang, Yilin; Liu, Wei‐Di; Hu, Wenbin; Huang, Yan; Chen, Yanan

doi:10.1002/smll.202002856

Cited by 33 publications

(13 citation statements)

References 56 publications

(55 reference statements)

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“…[4e,96] The flexible cathodes that have been investigated usually include two key elements: active materials for electrochemical reactions and a current collector for charge transport. Thus, those self-standing and flexible current collectors, such as highly conductive RGO-CNT (crosslinked 1D CNTs interlayered between the densely packed GO nanosheets), [97] were also developed for achieving high-performance and desirable mechanical flexibility of Al-based ARMMBs. The thus-obtained flexible RGO-CNT film can act as a desirable current collector in the assembling of flexible Al-based ARMMBs (Figure 9h), which has been shown to exhibit impressive electrochemical performance including superior cycling stability and rate capability, [90] b) Schematic profile of the structure of Al x MnO 2 •nH 2 O. Reproduced with permission.…”

Section: Al-based Armmbsmentioning

confidence: 99%

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Aqueous Rechargeable Multivalent Metal‐Ion Batteries: Advances and Challenges

Pan

Liu

Yang

et al. 2021

Advanced Energy Materials

162

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and transportation applications requires efficient and revolutionary electrical energy storage devices (ESDs). [2] Among the developed ESDs, rechargeable lead-acid batteries and lithium-ion batteries (LIBs) represent the most mature technologies that are widely used as power supplies in today's portable electronics, transportation, and stationary energy storage applications. [3] However, owing to the inadequate rate of improvement in energy density and cycle life, as well as cost and safety concerns of the two well-established battery technologies, there is an urgent need for energy storage technologies "beyond the lead-acid batteries and LIBs," i.e., alternative advanced battery systems to meet the rapidly growing demand of the emerging markets of electric vehicles and grid energy storage. Therefore, the search for the low cost, environmental-benignity, high energy density with rapid energy storage (high power density), and long-cycle life batteries has become one of the world's top issues. Compared with the state-of-the-art nonaqueous LIB systems, new developing aqueous rechargeable batteries, [4] especially for aqueous rechargeable multivalent metal-ion batteries (ARMMBs) by means of a multi-electron-transfer electrode reaction possess prominent advantages including cost efficiency, absolute safety, environmental benignity, and high capacity and rate capability (Figure 1a). [5] Note that the ARMMBs usually consist of a multivalent-metal anode, an aqueous electrolyte in majority and a cathode for accommodation of the multivalentmetal ions. The working mechanism in the ARMMBs is different from multivalent metal-alkaline batteries (Figure 1b, taking Zn-ion battery and Zn-alkaline battery as examples). [6] Furthermore, the high ionic conductivity of aqueous electrolytes (≈1 and 10 -3 -10 -2 S cm -1 for nonaqueous electrolytes) facilitate high-rate abilities and high-power densities of ARMMBs. [7] Therefore, owing to their better electrochemical performance and advances in the development of nanostructured materials, enormous research interests have turned to ARMMBs, leading to a huge expansion of publications/literatures in the past five years (Figure 1c). However, the insufficient energy density and limited life span of ARMMBs usually hinder their grid-scale applications in the modern society.There have been a couple of reviews published recently on the ongoing hot topic focusing on aqueous rechargeable Aqueous rechargeable multivalent metal-ion batteries (ARMMBs) have a great potential to meet the future demands in the wide spectrum of energy storage applications, ranging from wearables/portables to large-scale stationary energy storage. This is owing to the abundance of the electrode materials, their eco-friendliness, high safety, fast-charging capability, high power density, and long-cycling capability. There has been considerable progress in ARMMBs over the past ten years. However, their rather narrow operating voltage window and insufficient energy density are still the main barriers to their use as a...

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Section: Al-based Armmbsmentioning

confidence: 99%

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confidence: 99%

Aqueous Rechargeable Multivalent Metal‐Ion Batteries: Advances and Challenges

Pan

Liu

Yang

et al. 2021

Advanced Energy Materials

162

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“…CCs are the most common current collectors for the flexible cathodes prepared with binders, 40,[54][55][56][57]61,[70][71][72][73] and some other flexible substrates are also reported, such as carbon papers, 65,66 stainless-steel films, 33 and graphene oxide (GO)-CNT hybrid films. 74 Ma et al prepared a binder-contained cathode with CC for flexible aqueous zinc-iodine batteries. 54 When the prepared flexible battery was subjected to various deformations such as bending, squeezing, and rolling, its capacity and Coulombic efficiency remained nearly unchanged compared to its initial state (Figure 3A), demonstrating the tough structure of the fabricated cathode.…”

Section: Binder-containing Cathodesmentioning

confidence: 99%

Recent progress of flexible aqueous multivalent ion batteries

Wang

et al. 2022

Carbon Energy

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Flexible aqueous batteries have been thriving with the growing demand for wearable and portable electrical devices. In particular, flexible aqueous multivalent ion batteries (FAMIBs), the charge carriers of which include Zn 2+ , Al 3+ , Mg 2+ , and Ca 2+ , have great potential for development owing to their high safety, high elemental abundance in the Earth's crust, and a multielectron redox mechanism with a high theoretical specific capacity. Therefore, for a comprehensive understanding of this developing field, it is necessary to summarize the recent research progress of FAMIBs in a timely manner.Herein, the advancements of the state-of-the-art FAMIBs are reviewed, and the prospects toward this field are also proposed. This study focuses on the rational material and configuration design for FAMIBs in recent studies to achieve high battery performances under deformation conditions, which is elaborated on by classification of the anode, cathode, hydrogel electrolyte, and configurations of FAMIBs. Besides, the electrochemical performance of FAMIBs under flexible conditions is also reviewed from the perspective of their working voltage, specific capacity, and cycling stability. Finally, the approaches to improve the performance of FAMIBs are comprehensively evaluated, followed by the outlook on the challenges and opportunities in future development of FAMIBs.

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“…According to the comparison between reported aqueous batteries, it is not difficult to find that present researches mainly focus on metallic carriers [ 9 – 13 ]. Nevertheless, proton (H + ), hydronium (H 3 O + ), and ammonium (NH 4 + ) as inexpensive and sustainable nonmetallic carriers have rarely been studied [ 14 – 16 ].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Bond-Assisted Ultra-Stable and Fast Aqueous NH4+ Storage

Zhang

Xia

et al. 2021

Nano-Micro Lett.

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Aqueous ammonium ion batteries are regarded as eco-friendly and sustainable energy storage systems. And applicable host for NH4+ in aqueous solution is always in the process of development. On the basis of density functional theory calculations, the excellent performance of NH4+ insertion in Prussian blue analogues (PBAs) is proposed, especially for copper hexacyanoferrate (CuHCF). In this work, we prove the outstanding cycling and rate performance of CuHCF via electrochemical analyses, delivering no capacity fading during ultra-long cycles of 3000 times and high capacity retention of 93.6% at 50 C. One of main contributions to superior performance from highly reversible redox reaction and structural change is verified during the ammoniation/de-ammoniation progresses. More importantly, we propose the NH4+ diffusion mechanism in CuHCF based on continuous formation and fracture of hydrogen bonds from a joint theoretical and experimental study, which is another essential reason for rapid charge transfer and superior NH4+ storage. Lastly, a full cell by coupling CuHCF cathode and polyaniline anode is constructed to explore the practical application of CuHCF. In brief, the outstanding aqueous NH4+ storage in cubic PBAs creates a blueprint for fast and sustainable energy storage.

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Nanomanufacturing of RGO‐CNT Hybrid Film for Flexible Aqueous Al‐Ion Batteries

Cited by 33 publications

References 56 publications

Aqueous Rechargeable Multivalent Metal‐Ion Batteries: Advances and Challenges

Aqueous Rechargeable Multivalent Metal‐Ion Batteries: Advances and Challenges

Recent progress of flexible aqueous multivalent ion batteries

Hydrogen Bond-Assisted Ultra-Stable and Fast Aqueous NH4+ Storage

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