Dendrite‐Free Lithium Deposition and Stripping Regulated by Aligned Microchannels for Stable Lithium Metal Batteries

Ni, Shuyan; Sheng, Jinzhi; Zhang, Chang; Wu, Xin; Yang, Chuang; Pei, Songfeng; Gao, Runhua; Liu, Wei; Qiu, Ling; Zhou, Guangmin

doi:10.1002/adfm.202200682

Cited by 46 publications

(26 citation statements)

References 71 publications

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“…1 The rapid development of renewable energy is driving the demand for new electrochemical storage devices with lower cost, higher safety, and an energy density higher than those of traditional lithium-ion batteries. [2][3][4][5][6][7] Among them, solid-state lithium-sulfur (Li-S) batteries have drawn great attention as a promising candidate due to their high energy density (2600 W h kg À1 ), high safety and low cost. [8][9][10] However, the practical use of solid-state Li-S batteries remains challenging due to two major problems: (1) sluggish conversion reaction kinetics attributed to the insulating nature and a high S to Li 2 S conversion energy barrier, and (2) poor structural and interfacial stability ascribed to the large S to Li 2 S volume change (B80%) during charging/discharging.…”

Section: Introductionmentioning

confidence: 99%

A quasi-intercalation reaction for fast sulfur redox kinetics in solid-state lithium–sulfur batteries

Zhang

Sheng

et al. 2022

Energy Environ. Sci.

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Section: Introductionmentioning

confidence: 99%

A quasi-intercalation reaction for fast sulfur redox kinetics in solid-state lithium–sulfur batteries

Zhang

Sheng

et al. 2022

Energy Environ. Sci.

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“…[168,169] Specifically, 3D conductive host with high surface areas can homodisperse the current and adjust the space charge distribution in Li metal anodes. [170] Matrixes with strong lithiophilic sites can guide the distribution of Li-ion flux and determine the nucleation features. [152] Besides, the pressure inside the electrode can also be tuned by the host.…”

Section: Tailoring Host Structuresmentioning

confidence: 99%

Working Principles of Lithium Metal Anode in Pouch Cells

Sun

Cheng

et al. 2022

Advanced Energy Materials

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Advanced energy storage technology represented by lithium (Li)-ion batteries (LIBs) has revolutionized human life in recent years. The energy density of LIBs based on intercalation chemistry is approaching its theoretical limit after unremitting efforts for the past three decades. The state-of-the-art LIBs with graphite anode can only achieve an energy density lower than 300 Wh kg −1 . [1] This cannot satisfy the increasing demands for portable electronic devices, electric vehicles, and stationary energy storage systems. [2] Therefore, it is urgently called for next-generation batteries with a high energy density, long lifespan, and high safety performance. [3,4] Electrode material is of great importance in determining the energy density of batteries. [5] As the holy grail anode, Li metal possesses the ultrahigh theoretical specific capacity (3860 mAh g −1 ) and low potential (−3.04 V vs the standard hydrogen electrode). The promising feature renders Li metal anode to be an indispensable candidate for constructing next-generation high-energy-density batteries. [6] A high energy density of 400 or even 500 Wh kg −1 can be achieved with Li metal batteries (LMBs) matching Ni-rich LiNi x Co y Mn (1−x−y) O 2 (0 < x, y <1), oxygen, or sulfur cathodes, etc. [7][8][9] However, the conversion chemistry and high reactivity of Li metal also bring great challenges to the design of robust LMBs with long lifespan and high safety. [10,11] Specifically, Li dendrite growth and infinite volume variation lead to unstable solid electrolyte interphase (SEI) on Li metal anodes, resulting in low Li utilization, capacity decline, and even safety risk, [12] severely hindering the practical applications of LMBs. [13][14][15] Recently, extensive strategies have been exploited to control the dendrite growth of Li metal anodes, including engineering electrolytes and additives, [16] designing 3D host structures, [17][18][19] constructing artificial SEI, [20,21] applying solid-state electrolyte (SSE), [22][23][24] and adjusting operation conditions. [25] A high Coulombic efficiency (>99.9%) and long lifespan (>1000 cycles) have been reported in the materials-level coin cells. [26][27][28] Notably, Li dendrite growth is primarily driven by the kinetical limitation of Li-ion diffusion near the electrolyte/electrode interface. Serious dendrite issues can be encountered under harsh operating conditions in pouch cells, considering the accelerated consumption of Li ions at large currents and high Lithium metal battery has been considered as one of the potential candidates for next-generation energy storage systems. However, the dendrite growth issue in Li anodes results in low practical energy density, short lifespan, and poor safety performance. The strategies in suppressing Li dendrite growth are mostly conducted in materials-level coin cells, while their validity in device-level pouch cells is still under debate. It is imperative to address dendrite issues in pouch cells to realize the practical application of Li metal batteries. This review prese...

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“…Lithium–oxygen batteries have gradually attracted extensive attention and in-depth research due to their ultra-high theoretical specific capacity of 3500 Wh kg –1 . − This high energy density stems from the light weight of the active medium oxygen in the cathode and the full utilization of the lithium metal anode. − However, during battery cycling, due to the repeated deposition/exfoliation process of lithium on the anode surface, the continuous formation and rupture of solid electrolyte interphase (SEI) will result in the loss of electrolyte and lithium metal. − In addition, the uneven deposition/exfoliation of lithium can also induce the disordered growth of lithium dendrites, causing problems such as short circuits and the formation of “dead lithium”, which seriously affects the Coulombic efficiency and lifespan of the battery and hinders the practical applications of lithium–oxygen batteries. − …”

Section: Introductionmentioning

confidence: 99%

Pulsed Current Boosts the Stability of the Lithium Metal Anode and the Improvement of Lithium–Oxygen Battery Performance

Zhang

Zhou

Wang

et al. 2022

ACS Appl. Mater. Interfaces

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Lithium–oxygen batteries have received extensive attention due to their high theoretical specific capacity, but problems such as high charging overpotential and poor cycling performance hinder their practical application. Herein, a pulsed current, which merits its relaxation phenomenon, is applied during the charging cycle to address the abovementioned problems. Pulsed charging can not only reduce the charging overpotential, but also control the mass transfer and distribution of lithium ions. As a result, the uniform deposition of lithium ions on the anode surface is realized, the repeated rupture and formation of the solid electrolyte interphase is reduced, and the growth of the lithium dendrites is successfully suppressed, thereby achieving the purpose of protecting lithium metal from excessive consumption. When the pulsed charging duty ratio (T on/T off) is 1:1, after 25 cycles, the lithium–oxygen battery anode still presents a relatively flat and dense deposition surface, which is obviously better than the loose and rough surface after normal cycling. In addition, the protective effect of pulsed charging on the lithium metal anodes of lithium–oxygen batteries is also verified by the construction of other lithium-based batteries.

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Dendrite‐Free Lithium Deposition and Stripping Regulated by Aligned Microchannels for Stable Lithium Metal Batteries

Cited by 46 publications

References 71 publications

A quasi-intercalation reaction for fast sulfur redox kinetics in solid-state lithium–sulfur batteries

A quasi-intercalation reaction for fast sulfur redox kinetics in solid-state lithium–sulfur batteries

Working Principles of Lithium Metal Anode in Pouch Cells

Pulsed Current Boosts the Stability of the Lithium Metal Anode and the Improvement of Lithium–Oxygen Battery Performance

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