2021
DOI: 10.1002/adma.202103304
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Updated Insights into 3D Architecture Electrodes for Micropower Sources

Abstract: Microbatteries (MBs) and microsupercapacitors (MSCs) are primary on‐chip micropower sources that drive autonomous and stand‐alone microelectronic devices for implementation of the Internet of Things (IoT). However, the performance of conventional MBs and MSCs is restricted by their 2D thin‐film electrode design, and these devices struggle to satisfy the increasing IoT energy demands for high energy density, high power density, and long lifespan. The energy densities of MBs and MSCs can be improved significantl… Show more

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Cited by 36 publications
(24 citation statements)
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“…However, suitable inks of active materials are still limited and the printing resolution is also needed to be further improved. 52 Furthermore, to maintain the complex morphologies of current collectors/scaffolds, conformal deposition techniques of thin film are desired. The ALD technique is a suitable alternative to achieve this goal, which ensures controlling the thickness of active material layer at the atomic level.…”
Section: Discussionmentioning
confidence: 99%
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“…However, suitable inks of active materials are still limited and the printing resolution is also needed to be further improved. 52 Furthermore, to maintain the complex morphologies of current collectors/scaffolds, conformal deposition techniques of thin film are desired. The ALD technique is a suitable alternative to achieve this goal, which ensures controlling the thickness of active material layer at the atomic level.…”
Section: Discussionmentioning
confidence: 99%
“…However, suitable inks of active materials are still limited and the printing resolution is also needed to be further improved. 52 Although significant progress have been achieved of MSCs based on LbL-based electrode design strategy, there are still some key aspects, to which need to be paid high attention: (ⅰ) considering the matching degree of the thermal properties of each component materials to avoid the separation of thin films during the manufacturing and charge-discharge processes; (ⅱ) preventing the collapse of bilayer materials caused by volume expansion during the charging-discharging process, thereby resulting in compromise of electrode stability; and (ⅲ) theoretical simulation and analysis to ensure optimized thickness parameters of each thin film to obtain maximum mass loading and good enough conductivity at the expense of minimum device thickness addition. Nevertheless, it has to be pointed out that the LbL-based assemble is not compatible well with the MSCs in stacked topology although the LbL technique is simple and effective to enhance the performance of MSCs.…”
Section: Lbl-assembled Electrode Design For Mscsmentioning
confidence: 99%
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“…Owing to the unique three-dimensional architectures (3D), 3D materials typically have a large specific surface area (>1,000 m 2 g −1 ), which favors the accessibility of ion-active sites as well as improved ion and electron transport, hence facilitating reaction kinetics ( Zhao et al, 2018a ; Liu et al, 2019b ; Lochmann et al, 2018 ). 3D MSCs have received a lot of attention in the last decade because of the obvious improved electrochemical performance of conventional SCs using 3D architecture electrodes, with the goal of developing micropower sources that meet both the dimensional and energetic requirements for on-chip integration ( Figure 4C ) ( Sha et al, 2021 ). Particularly, significant progress has been made in the design and manufacturing of 3D architectural electrodes for the development of 3D MSCs ( Liu et al, 2018b ; Zhao et al, 2018b ; Zhao and Lei, 2020 ).…”
Section: Classification Of Supercapacitorsmentioning
confidence: 99%
“… Schematic of 3D MSCs (A) ( Liu et al, 2019a ), Brief development featuring representative 3D architecture electrodes for MSCs (B) ( Lei et al, 2020 ), Fabrication and structure of HAN (C) ( Sha et al, 2021 ). …”
Section: Classification Of Supercapacitorsmentioning
confidence: 99%