Integrated Porous Cu Host Induced High‐Stable Bidirectional Li Plating/Stripping Behavior for Practical Li Metal Batteries

Chen, Jianyu; Li, Sijia; Qiao, Xin; Wang, Yizhou; Lei, Linna; Lyu, Zhiyang; Zhao, Jianwei; Liu, Ruiqing; Liang, Qinghua; Ma, Yanwen

doi:10.1002/smll.202105999

Cited by 38 publications

(28 citation statements)

References 63 publications

(50 reference statements)

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“…Powder-sintering is a heat treatment applied to compact powder in order to improve the strength and structure integrity. It is, thought to be a facile, effective, and lowcost way for the preparation of porous materials [26,27]. The particles of the powder chemically bond to each other and form a consistent shape under a high temperature (below the melting point of the main component).…”

Section: D Copper Frameworkmentioning

confidence: 99%

Construction and Modification of Copper Current Collectors for Improved Li Metal Batteries

Luo¹,

Pei²

2024

Lithium Batteries - Recent Advances and Emerging Topics

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Metallic Lithium have gained great attention for its high theoretical specific capacity. But continuous growth of Li dendrites upon cycling might cause low coulombic efficiency and serious security issues. Construction of advanced 3D Cu current collectors to regulate Li plating/stripping and improve battery performance is considered as one effective promising strategy. In this chapter, we will discuss the roles and requirements of current collectors in lithium metal batteries. Then methods (dealloying, powder-sintering and 3D printing) employed for construction of 3D Cu current collector and implementation of surface modification (lithiophilic sites and coating layers) will be illustrated. At last, future opportunities of Cu current collectors will be lifted out.

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Section: D Copper Frameworkmentioning

confidence: 99%

Construction and Modification of Copper Current Collectors for Improved Li Metal Batteries

Luo¹,

Pei²

2024

Lithium Batteries - Recent Advances and Emerging Topics

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“…[185] Modification of the current collector is an alternative approach to regulating Li depositing behaviors, especially for anode-free systems. [186] Lin et al proposed an epitaxial induced plating current-collector to enhance the lifespan of anode-free LMBs. [114] The liquid metal coating layer on current collects initially stores Li by alloying reaction, forming an epitaxial layer.…”

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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“…[47] For Li metal anodes, Li-plating-induced internal stress plays a significant role in Li dendrite growth. [48][49][50][51] Such stress-induced dendrites could be mitigated on soft substrates or non-rigid porous conductive hosts through stress relaxation mechanism. [47,48] But for Zn metal anodes, whether they suffer the similar stress change during Zn plating and its effect on dendrite growth are still not clear.…”

Section: Introductionmentioning

confidence: 99%