Self-Healing Wide and Thin Li Metal Anodes Prepared Using Calendared Li Metal Powder for Improving Cycle Life and Rate Capability

Jin, Dahee; Oh, Jeonghun; Friesen, Alex; Kim, Kyuman; Jo, Taejin; Lee, Yong Min; Ryou, Myung‐Hyun

doi:10.1021/acsami.8b02740

Cited by 33 publications

(37 citation statements)

References 67 publications

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“…[ 118–123 ] However, Li metal powders produced by DET are highly reactive toward residual vapor or oxygen even in inert gases and exhibit ductility. These problems can be solved by coating the surface of Li metal powder with Li 2 CO 3 , [ 124–126 ] LiF, [ 115,127,128 ] wax, [ 129,130 ] and ionic liquids [ 131 ] to improve stability and ductility.…”

Section: Use Of LI Metal Powder and Micropatterning To Increase Surfamentioning

confidence: 99%

Section: Use Of LI Metal Powder and Micropatterning To Increase Surfamentioning

confidence: 99%

“…Thin ceramic layer‐coated Li metal powders have been developed and marketed to assure the stability of Li metal powder during its storage and manufacturing, as exemplified by stabilized Li metal powder with a nanolevel Li 2 CO 3 coating (SLMP, FMC in the USA) [ 124–126 ] and LiF‐coated Li powder (Albemarle, former Rockwood Lithium in Germany). [ 127 ] Such protected Li metal powders allow Li metal powder electrodes to be fabricated by slurry coating in a dry room, as the protective ceramic layer prevents Li metal from contacting organic solvents, some binders, etc.…”

Section: Use Of LI Metal Powder and Micropatterning To Increase Surfamentioning

confidence: 99%

“…In addition to Li metal powder design, electrode design has also been extensively researched. [ 126 ] Jin et al identified the pressing effects of Li metal powder electrode on the electrochemical performance. As shown in Figure 6c, bare Li metal powder electrodes were entirely covered by highly resistive Li 2 CO 3 with low Li ionic (≈10 −8 S cm −1 ) and electronic (≈10 −6 S cm −1 ) conductivities.…”

Section: Use Of LI Metal Powder and Micropatterning To Increase Surfamentioning

confidence: 99%

“…In summary, the key advantage of Li metal powder usage is its versatile applicability to the slurry process and the large surface area of Li metal. [ 114,121,123,126,127,133 ] The intrinsic demerits of Li metal powders can be compensated through the use of functional additives in the simple slurry process. However, the commercialization of micron‐sized Li metal powders is still hindered by high manufacturing costs and the immaturity of the large‐scale slurry coating technology.…”

Section: Use Of LI Metal Powder and Micropatterning To Increase Surfamentioning

confidence: 99%

See 4 more Smart Citations

Structure‐Controlled Li Metal Electrodes for Post‐Li‐Ion Batteries: Recent Progress and Perspectives

Jin

Park

Ryou

et al. 2020

Adv Materials Inter

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more batteries, this approach fails to exceed the threshold of 500 km in view of the limited battery mounting space in EVs and the almost saturated energy density of state-of-the-art LIBs (Figure 1a).As demonstrated in the road map for the development of the eGolf (an EV from Volkswagen), a driving range of 420 km can be achieved by 2020 based on the currently available LIB chemistry, cell design techniques, and vehicle frame lightening.

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Section: Use Of LI Metal Powder and Micropatterning To Increase Surfamentioning

confidence: 99%

Section: Use Of LI Metal Powder and Micropatterning To Increase Surfamentioning

confidence: 99%

Section: Use Of LI Metal Powder and Micropatterning To Increase Surfamentioning

confidence: 99%

Section: Use Of LI Metal Powder and Micropatterning To Increase Surfamentioning

confidence: 99%

Section: Use Of LI Metal Powder and Micropatterning To Increase Surfamentioning

confidence: 99%

See 3 more Smart Citations

Structure‐Controlled Li Metal Electrodes for Post‐Li‐Ion Batteries: Recent Progress and Perspectives

Jin

Park

Ryou

et al. 2020

Adv Materials Inter

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Nanoscaled Lithium Powders with Protection of Ionic Liquid for Highly Stable Rechargeable Lithium Metal Batteries

Zhang

Hu³

et al. 2019

Advanced Science

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specific capacity of 3860 mAh g −1 and a low gravimetric density of 0.53 g cm −2 with the lowest negative electrochemical potential (−3.04 V vs standard hydrogen electrode). [2] A theoretical energy density of 2600 Wh kg −1 for Li-S battery and 3500 Wh kg −1 for Li-air battery might be achieved with a Li metal anode. [3] Practically, however, the use of Li metal anode in rechargeable batteries faces huge technical challenges in safety and short cycle life caused by the potential short circuit due to the Li-dendrite growth and by the low coulombic efficiency (CE) due to the formation of unstable solid-electrolyte interface (SEI) layer, respectively. [4] Considerable effort has been devoted to the improvement of electrochemical performance of Li metal anode and development of rechargeable Li metal batteries. [5] Attempts were made typically by the modification of electrolytes, [6] or protection of Li metal anode, [7] or use of advanced separators [8] and solid-state electrolytes. [9] Nevertheless, most of these studies were based on thick dense Li foil, especially at laboratory level, which means economically not only the massive waste of Li source. The practical power operation of Li metal anode at high current density is also problematic due to the limited accessibility of the active surface of Li foil. [2][3][4][5][6][7][8][9] Although construction of 3D nanostructured Li hosts with graphene oxide, [10] hollow carbon spheres, [11] nanofiber matrix, [12] and nanoporous scaffolds [13] may be effective alternatives in homogenizing Li deposition and stabilizing SEI layer, the complicated manufacturing process of materials and electrodes, additional electrodeposition or thermal infusion process for prestoring Li into the hosts, in particular, is energy and time consuming, and consequently restricts their practical applications on the whole in battery manufacture industry.Unlike Li foils, Li metal in powder form has advantages in the specific surface area and better compatibility with the existing battery manufacturing processes. In theory, the specific surface area of Li powder of ≈20 µm in diameter is 4.5 times higher than that of Li foil, [14] which may substantially lower the local current density of the electrode, and hence decrease the polarization of Li anode. For the Li dendrite growth, multiple models have been developed, including Chazalviel model, Monroe-Newman model, Tikekar-Archer model, surface energy model, and phase field kinetics model. [5b,15-17] In Chazalviel model, [16] it was demonstrated that the growth of To suppress the dendrite formation and alleviate volume expansion upon striping/platting is a key challenge for developing practical lithium metal anodes. Lithium metal in powder form possesses great potential to address this issue due to large specific surface area. However, the fabrication of powdery metallic lithium is largely restricted because of its unique softness, stickiness, and high reactivity. Here, a safe and readily accessible cryomilling process toward lithium powders is ...

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Robust Cycling of Ultrathin Li Metal Enabled by Nitrate‐Preplanted Li Powder Composite

Jin

Roh

et al. 2021

Advanced Energy Materials

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Making Li metal batteries (LMBs) with thinner Li is necessary to improve the cell energy density in practice. Li metal powders (LMPs) are beneficial for the facile manufacturing of thin Li, flexible cell design, and the 3D control of Li plating/stripping. However, the inhomogeneous surfaces of commercial LMPs limit their practical use in LMBs. Herein, a 20 µm‐thick, LiNO3 preplanted LMP (LN‐LMP) composite electrode, rationally designed for LMP surface stabilization, is presented. The addition of LiNO3 into the slurry uniformly modified the LMP surface by N‐rich solid‐electrolyte interphase (SEI). Preplanted LiNO3 further acts as a reservoir for the sustainable release into the electrolyte, thereby repairing the SEI upon cycling. The LMBs with LN‐LMP exhibited excellent cycling performances (450 cycles at 87.3% retention) compared to the control cells, and even outperformed the cells with LiNO3‐containing electrolytes. Further verification with high loading of a LiNixMnyCo1–x–yO2 (NMC) cathode demonstrated the feasibility of the practical cells and the versatility of the thin, LN‐LMP anode combined with advanced electrolytes.

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Self-Healing Wide and Thin Li Metal Anodes Prepared Using Calendared Li Metal Powder for Improving Cycle Life and Rate Capability

Cited by 33 publications

References 67 publications

Structure‐Controlled Li Metal Electrodes for Post‐Li‐Ion Batteries: Recent Progress and Perspectives

Structure‐Controlled Li Metal Electrodes for Post‐Li‐Ion Batteries: Recent Progress and Perspectives

Nanoscaled Lithium Powders with Protection of Ionic Liquid for Highly Stable Rechargeable Lithium Metal Batteries

Robust Cycling of Ultrathin Li Metal Enabled by Nitrate‐Preplanted Li Powder Composite

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