Engineering current collectors for batteries with high specific energy

Choudhury, R; Wild, Joseph; Yang, Yuan

doi:10.1016/j.joule.2021.03.027

Cited by 59 publications

(37 citation statements)

References 12 publications

(19 reference statements)

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“…The direct-CVD growth of graphene can be readily realized on industrial current collectors including Cu and Al foils, which are evidenced to effectively mitigate metallic corrosion, promote interfacial reaction kinetics, and guide uniform metal deposition. Along this line, the promising method might be extended to other typical metallic or even polymer current collectors (e.g., Ni, Ti, stainless steel, and polyimide). , …”

Section: Possibility Of Direct-cvd-enabled Graphenementioning

confidence: 99%

“…Along this line, the promising method might be extended to other typical metallic or even polymer current collectors (e.g., Ni, Ti, stainless steel, and polyimide). 191,192 Aside from a multitude of planar current collectors aforementioned, 3D carbonaceous current collectors (e.g., carbon nanotube networks and carbon fiber) are also expected to be suitable substrates for the direct-CVD growth of graphene. 193,194 The resultant free-standing products upon CVD reaction could bypass the use of a binder/conductive additive and thus avoid the undesired interfaces, which also harness high flexibility in the pursuit of wearable energy storage devices.…”

Section: Substrate Selectionmentioning

confidence: 99%

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Direct-Chemical Vapor Deposition-Enabled Graphene for Emerging Energy Storage: Versatility, Essentiality, and Possibility

Shi

Yang

et al. 2022

ACS Nano

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The direct chemical vapor deposition (CVD) technique has stimulated an enormous scientific and industrial interest to enable the conformal growth of graphene over multifarious substrates, which readily bypasses tedious transfer procedure and empowers innovative materials paradigm. Compared to the prevailing graphene materials (i.e., reduced graphene oxide and liquid-phase exfoliated graphene), the direct-CVD-enabled graphene harnesses appealing structural advantages and physicochemical properties, accordingly playing a pivotal role in the realm of electrochemical energy storage. Despite conspicuous progress achieved in this frontier, a comprehensive overview is still lacking by far and the synthesis-structure-property-application nexus of direct-CVD-enabled graphene remains elusive. In this topical review, rather than simply compiling the state-of-the-art advancements, the versatile roles of direct-CVD-enabled graphene are itemized as (i) modificator, (ii) cultivator, (iii) defender, and (iv) decider. Furthermore, essential effects on the performance optimization are elucidated, with an emphasis on fundamental properties and underlying mechanisms. At the end, perspectives with respect to the material production and device fabrication are sketched, aiming to navigate the future development of direct-CVD-enabled graphene en-route toward pragmatic energy applications and beyond.

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Section: Possibility Of Direct-cvd-enabled Graphenementioning

confidence: 99%

Section: Substrate Selectionmentioning

confidence: 99%

Direct-Chemical Vapor Deposition-Enabled Graphene for Emerging Energy Storage: Versatility, Essentiality, and Possibility

Shi

Yang

et al. 2022

ACS Nano

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“…Some scholars have proposed that the higher conductivity of lithium metal foil can replace the anode current collector, but the softness of the metal lithium metal foil cannot meet the requirements of production and practical applications. 45 Anode-free lithium metal batteries (Figure 1c, Anode-free||Licontaining cathode batteries) have been developed and utilized, 46,47 which can increase the energy density of the battery to more than 450 Wh kg −1 . The lithium in anode-free lithium metal batteries all comes from the Li-containing cathode materials, and the anode actually has only one current collector, which stores energy by electroplating lithium metal.…”

Section: Current Collectors In Lithium Metal Batteriesmentioning

confidence: 99%

“…In the first two lithium metal battery systems (Figures a and b), the lithium metal is excessive (especially Li||Li-containing cathode batteries), and excessive lithium metal will reduce the energy density of the battery. Some scholars have proposed that the higher conductivity of lithium metal foil can replace the anode current collector, but the softness of the metal lithium metal foil cannot meet the requirements of production and practical applications . Anode-free lithium metal batteries (Figure c, Anode-free||Li-containing cathode batteries) have been developed and utilized, , which can increase the energy density of the battery to more than 450 Wh kg –1 .…”

Section: Current Collectors In Lithium Metal Batteriesmentioning

confidence: 99%

Research Progress on Copper-Based Current Collector for Lithium Metal Batteries

et al. 2021

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Lithium metal batteries (LMBs) using lithium metal as the anode show great potential in improving energy density and power density than conventional lithium-ion batteries (LIBs). In addition to the common Li-containing cathode materials in LIBs that can be used in LMBs, some Li-free materials (S, O 2 , etc.) have also been developed and applied to cathodes in LMBs. However, the lithium metal anode with highly chemically activity still faces many challenges. For example, growing lithium dendrites, producing "dead lithium", and causing a series of safety hazards, etc. In addition, in order to use a small amount (or zero excess) of lithium metal to increase the energy density of the battery and meet the mechanical strength of lithium metal anode, using a metal current collector is very important for lithium metal anode. In this Review, we first will discuss the role of cathode and anode current collector in lithium metal. Then we will analyze the influence of anode current collector on lithium metal anode, and highlight the recent progress on copper-based current collector modification strategies. Finally, we will discuss new insights and future directions associated with the copper-based current collector.

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“…In addition, the bottom space of the relatively thick and heavy 3D hosts will also be wasted, resulting in poor Li utilization efficiency and low overall electrode capacity. [ 33 ] Thus, the volume expansion and dendritic deposition behaviors can potentially be addressed by rationally regulating Li‐metal depositions during plating/stripping processes.…”

Section: Introductionmentioning

confidence: 99%

Roll‐To‐Roll Fabrication of Zero‐Volume‐Expansion Lithium‐Composite Anodes to Realize High‐Energy‐Density Flexible and Stable Lithium‐Metal Batteries

Luo

Zhang

et al. 2022

Advanced Materials

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The lithium (Li)‐metal anode offers a promising solution for high‐energy‐density lithium‐metal batteries (LMBs). However, the significant volume expansion of the Li metal during charging results in poor cycling stability as a result of the dendritic deposition and broken solid electrolyte interphase. Herein, a facile one‐step roll‐to‐roll fabrication of a zero‐volume‐expansion Li‐metal‐composite anode (zeroVE‐Li) is proposed to realize high‐energy‐density LMBs with outstanding electrochemical and mechanical stability. The zeroVE‐Li possesses a sandwich‐like trilayer structure, which consists of an upper electron‐insulating layer and a bottom lithiophilic layer that synergistically guides the Li deposition from the bottom up, and a middle porous layer that eliminates volume expansion. This sandwich structure eliminates dendrite formation, prevents volume change during cycling, and provides outstanding flexibility to the Li‐metal anode even at a practical areal capacity over 3.0 mAh cm−2. Pairing zeroVE‐Li with a commercial NMC811 or LCO cathode, flexible LMBs that offer a record‐breaking figure of merit (FOM, 45.6), large whole‐cell energy density (375 Wh L−1, based on the volume of the anode, separator, cathode, and package), high‐capacity retention (> 99.8% per cycle), and remarkable mechanical robustness under practical conditions are demonstrated.

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Engineering current collectors for batteries with high specific energy

Cited by 59 publications

References 12 publications

Direct-Chemical Vapor Deposition-Enabled Graphene for Emerging Energy Storage: Versatility, Essentiality, and Possibility

Direct-Chemical Vapor Deposition-Enabled Graphene for Emerging Energy Storage: Versatility, Essentiality, and Possibility

Research Progress on Copper-Based Current Collector for Lithium Metal Batteries

Roll‐To‐Roll Fabrication of Zero‐Volume‐Expansion Lithium‐Composite Anodes to Realize High‐Energy‐Density Flexible and Stable Lithium‐Metal Batteries

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