Bottom-Up Lithium Growth Triggered by Interfacial Activity Gradient on Porous Framework for Lithium-Metal Anode

Yun, Jonghyeok; Park, Beom-Kyeong; Won, Eun-Seo; Choi, Seung Hyun; Kang, Hyon Chol; Kim, Jung Ho; Park, Min; Lee, Jun Young

doi:10.1021/acsenergylett.0c01619

Cited by 119 publications

(70 citation statements)

References 48 publications

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“…3D porous metal substrates, such as Cu, [ 92,93 ] Ni, [ 94 ] Ti, [ 95 ] etc., are favorable hosts for Li metal due to their abundance, high conductivity, and high electrochemical stability. However, the cycling performance of Li metal anode based on these 3D metal substrates is inferior due to the weak lithiophilicity of Cu, Ni, and Ti during Li deposition.…”

Section: Current Strategies To Circumvent the Challenges Of Lithium Mmentioning

confidence: 99%

Strategies in Structure and Electrolyte Design for High‐Performance Lithium Metal Batteries

Qin

Holguin

Mohammadiroudbari

et al. 2021

Adv Funct Materials

142

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Lithium metal is the “holy grail” anode for next‐generation high‐energy rechargeable batteries due to its high capacity and lowest redox potential among all reported anodes. However, the practical application of lithium metal batteries (LMBs) is hindered by safety concerns arising from uncontrollable Li dendrite growth and infinite volume change during the lithium plating and stripping process. The formation of stable solid electrolyte interphase (SEI) and the construction of robust 3D porous current collectors are effective approaches to overcoming the challenges of Li metal anode and promoting the practical application of LMBs. In this review, four strategies in structure and electrolyte design for high‐performance Li metal anode, including surface coating, porous current collector, liquid electrolyte, and solid‐state electrolyte are summarized. The challenges, opportunities, perspectives on future directions, and outlook for practical applications of Li metal anode, are also discussed.

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Section: Current Strategies To Circumvent the Challenges Of Lithium Mmentioning

confidence: 99%

Strategies in Structure and Electrolyte Design for High‐Performance Lithium Metal Batteries

Qin

Holguin

Mohammadiroudbari

et al. 2021

Adv Funct Materials

142

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show abstract

“…The overuse of lithium in conventional lithium metal anodes may promote the above defects, as well as increase the difficulty of the manufacturing process and production costs. [ 6–10 ] In fact, a lithium‐free anode that works as a lithium metal battery after the initial charging process can provide a higher operating voltage compared with conventional lithium‐ion batteries, and has received increasing attention. [ 11–14 ]…”

Section: Introductionmentioning

confidence: 99%

Lithiophilic 3D Copper‐Based Magnetic Current Collector for Lithium‐Free Anode to Realize Deep Lithium Deposition

Zhang

Chen

Wen

et al. 2021

Adv Funct Materials

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Lithium metal is the ideal anode material for high-energy-density lithiumbased batteries. Nevertheless, lithium metal tends to accumulate on the surface of the current collector during the plating and stripping process to form lithium dendrites, resulting in low Coulombic efficiency and safety issues. Here, a lithiophilic 3D copper-based magnetic current collector is designed by loading ferromagnetic nickel-cobalt alloy and lithiophilic zinc oxide onto the copper foam to create a lithium-free anode. Under the micromagnetic field, the novel lithium-free anode achieves a high level of deep lithium deposition (from 300 µm to about 1000 µm), successfully alleviating the large change of lithium volume. In addition, the Coulombic efficiency and cyclic stability are improved effectively. With a total capacity of 1 mA h cm −2 at a current density of 1 mA cm −2 , the Coulombic efficiency of the above remains 95% at 590th-cycle. Moreover, the symmetric cell can stably cycle for more than 560 h at 2 mA cm −2 with the capacity of 1 mA h cm −2 . This novel strategy will potentially open up new horizons for lithium-free anodes, which may be generalized to other advanced energy storage systems.

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“…The challenge in dealing with lithium anodes lies in the intrinsic high chemical reactivity of Li, the heterogeneous and unstable solid/electrolyte interphase (SEI), and the cyclic volume expansion caused by accumulative deposition of Li dendrite and “dead” Li. [ 10 ] Numerous efforts have been devoted to stabilize the lithium anodes, including the modification of electrolyte with SEI‐stabilizing additives, [ 11 ] construction of artificial SEI and protection layers, [ 12 ] host of Li metal in conductive and lithiophilic 3D scaffolds, [ 13 ] and adoption of solid inorganic/polymer electrolyte or spacers. [ 14 ] Among the various tactics, the passivation of lithium metal surface by 2D materials has attracted particular attention by efficiently mediating Li plating/stripping and suppressing dendrite formation.…”

Section: Introductionmentioning

confidence: 99%

Wax‐Transferred Hydrophobic CVD Graphene Enables Water‐Resistant and Dendrite‐Free Lithium Anode toward Long Cycle Li–Air Battery

et al. 2021

Advanced Science

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One of the key challenges in achieving practical lithium–air battery is the poor moisture tolerance of the lithium metal anode. Herein, guided by theoretical modeling, an effective tactic for realizing water‐resistant Li anode by implementing a wax‐assisted transfer protocol is reported to passivate the Li surface with an inert high‐quality chemical vapor deposition (CVD) graphene layer. This electrically conductive and mechanically robust graphene coating enables serving as an artificial solid/electrolyte interphase (SEI), guiding homogeneous Li plating/stripping, suppressing dendrite and “dead” Li formation, as well as passivating the Li surface from moisture erosion and side reactions. Consequently, lithium–air batteries fabricated with the passivated Li anodes demonstrate a superb cycling performance up to 2300 h (230 cycles at 1000 mAh g−1, 200 mA g−1). More strikingly, the anode recycled thereafter can be recoupled with a fresh cathode to continuously run for 400 extended hours. Comprehensive time‐lapse and ex situ microscopic and spectroscopic investigations are further carried out for elucidating the fundamentals behind the extraordinary air and electrochemical stability.

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Bottom-Up Lithium Growth Triggered by Interfacial Activity Gradient on Porous Framework for Lithium-Metal Anode

Cited by 119 publications

References 48 publications

Strategies in Structure and Electrolyte Design for High‐Performance Lithium Metal Batteries

Strategies in Structure and Electrolyte Design for High‐Performance Lithium Metal Batteries

Lithiophilic 3D Copper‐Based Magnetic Current Collector for Lithium‐Free Anode to Realize Deep Lithium Deposition

Wax‐Transferred Hydrophobic CVD Graphene Enables Water‐Resistant and Dendrite‐Free Lithium Anode toward Long Cycle Li–Air Battery

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