Introducing low-tortuosity channels in thick electrode for high-areal-capacity solid polymer battery

Wang, Junru; Wang, Mengmeng; Si, Juntao; Zhu, Yiran; Chen, Chunhua

doi:10.1016/j.cej.2022.138651

Cited by 8 publications

(7 citation statements)

References 36 publications

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“…[65,229] Various loading methods such as phase transformation casting, electrodeposition, impregnation adsorption, and melting perfusion have also been explored to achieve this goal. [106,229,231,234] Additionally, novel approaches like lowtemperature technology, [235] CVD-grown methods, [236] 3D active coating technology, [237] and phase inversion and in-situ polymerization [238] have been attempted. Despite these efforts to develop high-loading electrodes, their application on an industrial scale remains challenging due to factors such as high costs, limited applicability, or difficulties in mass production.…”

Section: Other Preparation Methodsmentioning

confidence: 99%

Rational Design of High‐Loading Electrodes with Superior Performances Toward Practical Application for Energy Storage Devices

Tang,

Wei,

Jia

et al. 2023

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High‐loading electrodes play a crucial role in designing practical high‐energy batteries as they reduce the proportion of non‐active materials, such as current separators, collectors, and battery packaging components. This design approach not only enhances battery performance but also facilitates faster processing and assembly, ultimately leading to reduced production costs. Despite the existing strategies to improve rechargeable battery performance, which mainly focus on novel electrode materials and high‐performance electrolyte, most reported high electrochemical performances are achieved with low loading of active materials (<2 mg cm−2). Such low loading, however, fails to meet application requirements. Moreover, when attempting to scale up the loading of active materials, significant challenges are identified, including sluggish ion diffusion and electron conduction kinetics, volume expansion, high reaction barriers, and limitations associated with conventional electrode preparation processes. Unfortunately, these issues are often overlooked. In this review, the mechanisms responsible for the decay in the electrochemical performance of high‐loading electrodes are thoroughly discussed. Additionally, efficient solutions, such as doping and structural design, are summarized to address these challenges. Drawing from the current achievements, this review proposes future directions for development and identifies technological challenges that must be tackled to facilitate the commercialization of high‐energy‐density rechargeable batteries.

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Section: Other Preparation Methodsmentioning

confidence: 99%

Rational Design of High‐Loading Electrodes with Superior Performances Toward Practical Application for Energy Storage Devices

Tang,

Wei,

Jia

et al. 2023

Small

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“…4b and c and comparable to the values in previous reports. 46–48 In addition, the LFP|Bi-SPE-10|Li in Fig. 4e showed higher rate capability, along with significantly reduced overpotentials, than LFP|Bi-SPE-30|Li in Fig.…”

Section: Resultsmentioning

confidence: 92%

Solid polymer electrolytes of ionic liquids via a bicontinuous ion transport channel for lithium metal batteries

Cho

Lee

et al. 2023

J. Mater. Chem. A

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“…1−5 Among various energy storage devices, lithium-ion batteries occupy the majority of the market for consumer electronics and electric vehicles due to their high energy density. 6,7 However, the high cost and frequent safety incidents of lithium-ion batteries have been key in limiting their development for large-scale energy storage. 8−10 Aqueous zinc batteries, known for their cost-effectiveness and high safety, have gained significant attention.…”

Section: Introductionmentioning

confidence: 99%

“…To reduce the burning of fossil fuels and achieve efficient use of sustainable energy sources such as solar energy, the demand for the development of high-energy-density energy storage devices is increasing. − Among various energy storage devices, lithium-ion batteries occupy the majority of the market for consumer electronics and electric vehicles due to their high energy density. , However, the high cost and frequent safety incidents of lithium-ion batteries have been key in limiting their development for large-scale energy storage. − …”

Section: Introductionmentioning

confidence: 99%

Design of Thick Electrodes with Vertical Channels for Aqueous Batteries: Experimental and Numerical Analysis

Ma,

Yu,

Shang

et al. 2024

ACS Appl. Mater. Interfaces

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Developing thick electrodes with high-area loadings is a direct method for boosting the energy density. However, this approach also leads to a proportional increase in the resistance to charge transport. Optimizing the microstructure of the electrode can effectively enhance the charge transport kinetics in thick electrodes. Herein, a low-tortuosity nickel electrode with vertical channels (VC-Ni) is fabricated using a phase inversion method. A high-loading VC-Ni electrode (26.7 mg cm −2 ) delivers a superior specific capacity of 134.0 mAh g −1 at a 5 C rate, significantly outperforming the conventional nickel electrode (Con-Ni). Numerical simulations reveal the fast transport kinetics within the vertical channel electrodes. For the thick electrode, the VC-Ni electrode shows a substantially lower concentration gradient of OH − and H + compared to the Con-Ni electrode. Notably, beyond a critical loading of 26.5 mg cm −2 , the specific capacity initially increases with volume fraction, peaking at 50%, and then diminishes. The specific capacity increases as the channel size decreases, but the tendency to increase gradually decreases. The highest specific capacity is achieved with an inverted trapezoidal channel shape, characterized by larger pores near the separator and smaller pores near the current collector. This work is of guidance for the design of thick electrodes for high-performance aqueous batteries.

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Introducing low-tortuosity channels in thick electrode for high-areal-capacity solid polymer battery

Cited by 8 publications

References 36 publications

Rational Design of High‐Loading Electrodes with Superior Performances Toward Practical Application for Energy Storage Devices

Rational Design of High‐Loading Electrodes with Superior Performances Toward Practical Application for Energy Storage Devices

Solid polymer electrolytes of ionic liquids via a bicontinuous ion transport channel for lithium metal batteries

Design of Thick Electrodes with Vertical Channels for Aqueous Batteries: Experimental and Numerical Analysis

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