Thick electrode with thickness-independent capacity enabled by assembled two-dimensional porous nanosheets

Wu, Ting-Yi; Zhao, Zedong; Zhang, Jiajia; Zhang, Chang; Guo, Yixuan; Cao, Yongjie; Pan, Shaoxue; Liu, Yicheng; Liu, Peiying; Ge, Yuanhang; Liu, Wei; Dong, Lei; Lu, Hongbin

doi:10.1016/j.ensm.2020.12.034

Cited by 35 publications

(33 citation statements)

References 45 publications

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“…The designs of thick electrodes in silicon-based materials not merely require favorable electron-transfer kinetics, but also need to reserve an effective space to preserve the electrolyte infiltrate and accommodate the volume expansion during cycles. [20][21][22] In the last decade, the fabrication and structural designs of thick electrodes, such as laser processing, [20][21][22] slurrycasting technique, [24] layer-by-layer spray deposition, [21] electrostatic-assisted self-assembly approach, [25] suspension-casting method, [26] roll-and-cut method, [27] layer-by-layer assembly, [28] aerosol jet printing [29] and freeze-casting process [30] were widely studied. Recently, the 3D printing technology has been constantly utilized in the thick electrode design.…”

Section: Introductionmentioning

confidence: 99%

3D Printed Multilayer Graphite@SiO Structural Anode for High‐Loading Lithium‐Ion Battery

Chen

Jiang

et al. 2022

Batteries & Supercaps

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To satisfy the increasing demand for higher energy density, the fabrication and structural designs of three‐dimensional (3D) thick electrodes have received considerable attention. In this work, cheap commercial graphite (Gt) and silicon monoxide (SiO) were chosen as raw materials. We have took advantage of the multi‐layer biscuit structure feature to the 3D Gt@GS (Gt@Gt/SiO) electrode with high loading through a modified 3D printing technology. Such a unique structure can not only effectively accommodate the volume expansion in all directions, but also provide a 3D transport channel to enhance the mobility of electrons and ions in the thick electrodes. The obtained 3D Gt@GS electrode, as a freestanding material, shows high capacity and good cycling stability. Especially, the 3D Gt@GS electrode after 120 cycles has achieved a reversible capacity of 3.52 mAh cm−2 at 3.6 mA cm−2. In addition, we have successfully fabricated a 3D plane‐shaped batteries via a direct ink writing technology and a fused deposition technology. The heterotypic battery assembled can be utilized as an external power supply for the aircraft model. This work demonstrates that the structural battery combined with structural load and 3D printing technology is versatile enough to meet the demand of energy storage systems for high energy density.

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Section: Introductionmentioning

confidence: 99%

3D Printed Multilayer Graphite@SiO Structural Anode for High‐Loading Lithium‐Ion Battery

Chen

Jiang

et al. 2022

Batteries & Supercaps

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“…, where D 0 and 𝜖 is intrinsic Li-ion diffusion coefficient and volume fraction of conductive phase, respectively. [14][15][16] The resultant fast Li-ion transfer capability behaves in high ion conductivity (𝜎) in cell, as illustrated in Figure S2, Supporting Information. [20,21] Here, electrochemical kinetics of LMBs was simulated to prove the architectural advantage of our all-in-one structure in comparison with the traditional three-layered structure (Figure 1b,c and Figure S3, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

“…For Li‐ion batteries (LIBs), both anode and cathode often perform worse in capacity, rate and cycling stability than their theoretical limits, [ 9 , 10 , 11 , 12 , 13 ] especially for high loading mass or in high rate. [ 14 , 15 ] This is because the irregularly shaped active particles tend to stack in disordered manner, giving obstructed or tortuous interparticle channels and thereby leading sluggish charge transport kinetics. Tremendous effort has been devoted in order to create aligned channels with low tortuosity in electrodes.…”

Section: Introductionmentioning

confidence: 99%

All‐in‐One Structured Lithium‐Metal Battery

2022

Self Cite

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3D batteries possess apparent advantage in electrochemical ion‐transport kinetics than the conventional‐structured batteries. However, due to the special electrode configuration and fabrication complexity, 3D battery design has inherent issue of mechanical stability and only succeeds in microsystems, far from ideal. Herein, a high‐stable, all‐in‐one structured 3D lithium‐metal battery is designed which consists of paralleled microcell arrays. Fast ion‐transport kinetics in full cell level can not only address the key issue of lithium dendrites in anode but also improve electrochemical performance of cathode. As a result, the resultant lithium metal anode acquires long‐term stability of 1000‐cycle life at a high current density of 10 mA cm−2. Also the all‐in‐one structured lithium metal battery has general applicability for various cathodic materials and delivers significantly improved rate and cycling performance, as well as high areal capacity up to 10.4 mAh cm−2.

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“…To increase the energy density of LIBs, an effective method is to use thicker electrodes to increase the areal loading of active materials. The impact of electrode structure and thickness on electrochemical dynamics can be modeled using commercial finite element tools such as COMSOL, e.g., vertically aligned electrodes were known to have a lower tortuosity [76][77][78]. While these novel designs showed good promise in reducing the tortuosity, this review focuses on commercial electrodes which have a relatively high tortuosity.…”

Section: Energy Densitymentioning

confidence: 99%

A review of thermal physics and management inside lithium-ion batteries for high energy density and fast charging

Zeng

Chalise

Lubner

et al. 2021

Energy Storage Materials

129

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Traditionally it has been assumed that battery thermal management systems should be designed to maintain the battery temperature around room temperature. That is not always true as Lithium-ion battery (LIB) R&D is pivoting towards the development of high energy density and fast charging batteries. Therefore, it is necessary to have a comprehensive review of thermal considerations for LIBs targeted for high energy density and fast charging, i.e., the optimal thermal condition, thermal physics (heat transport and generation) inside the battery, and thermal management strategies. As the energy density and charge rate increases, the optimal battery temperature can shift to be higher than room temperature. To improve the temperature uniformity and avoid excessive internal temperature rise, heat transfer inside the battery needs to be enhanced, and reducing the thermal contact resistance between the electrodes and separator can significantly increase the effective thermal conductivity of batteries. In the first part of the review various challenges and latest developments related to thermal transport and properties of LIBs are discussed. In the second part of the review various sources of heat generation inside LIBs and various approaches to minimizing battery heat generation are summarized. The importance of heat of mixing due to ion diffusion during fast charging is also highlighted. Finally, a summary of latest advancement on smart control of internal temperature of LIBs is discussed as depending on the ambient temperature and the optimal temperature; the battery heat needs to be retained or dissipated to elevate or avoid temperature rise. Lithium-ion battery; Optimal battery temperature; High energy density; Fast charging; Battery thermal management

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Thick electrode with thickness-independent capacity enabled by assembled two-dimensional porous nanosheets

Cited by 35 publications

References 45 publications

3D Printed Multilayer Graphite@SiO Structural Anode for High‐Loading Lithium‐Ion Battery

3D Printed Multilayer Graphite@SiO Structural Anode for High‐Loading Lithium‐Ion Battery

All‐in‐One Structured Lithium‐Metal Battery

A review of thermal physics and management inside lithium-ion batteries for high energy density and fast charging

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