Critical role of surface craters for improving the reversibility of Li metal storage in porous carbon frameworks

ACS Appl. Energy Mater.

Suh

et al. 2021

Self Cite

Lithium (Li) metal is an ideal anode for high energy-density batteries. During Li plating and stripping, however, dendritic Li growth keeps generating an abundance of irreversible or inactive Li, resulting in severe performance degradation, shortcircuiting, and eventually cell failure. Even if various porous frameworks have received considerable attention to directly store Li metals, achievable reversible and rate capabilities of porous hosts were still hindered by their morphological limitations. Still, open pathways are highly required for homogeneous metallization. For this purpose, herein, enriched cavities to zeolitic imidazolate frameworks are strategically introduced by adapting a hard silica template approach. We found that the migration of Li ions is easily accessible to inner pores and cavities away from the surface during Li plating and stripping. This approach eventually utilizes most internal pores and fully facilitates Li-ion transport, eventually enhancing electrochemistry performances such as long-term cyclability and reversible capacity.

Section: Introductionmentioning

confidence: 87%

Enriched Cavities to ZIF-8-Derived Porous Carbon for Reversible Metallic Lithium Storage

Eom

ACS Appl. Energy Mater.

Suh

et al. 2021

Self Cite

“…Otherwise, the internal pores will be electrochemically deactivated, eventually resulting in reduced reversible capacity and long‐term cyclability. Park et al created craters on the surfaces of ZIF‐8 to secure an open path and investigated the role of the craters in improving the reversibility of plating and peeling when using ZIF‐8 as a host for LMBs 672 . First, poly(vinylpolypyrrolidone) (PVP, [C 6 H 9 NO] n ) was dissolved in deionized (DI) water, and colloidal silica (SiO 2 ) solution was added to the PVP solution under stirring for 24 h. Then, a solution of zinc acetate dihydrate and 2‐MIM dissolved in DI water as precursors were mixed with a PVP‐SiO 2 solution and maintained without stirring.…”

Section: Applications Of Mofs In Lithium‐based Energy Storage Systemsmentioning

confidence: 99%

Section: Applications Of Mofs In Lithium‐based Energy Storage Systemsmentioning

confidence: 99%

Metal‐organic framework derived porous structures towards lithium rechargeable batteries

Qutaish

Lee

et al. 2022

EcoMat

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Batteries are a promising technology in the field of electrical energy storage and have made tremendous strides in recent few decades. In particular, lithium-ion batteries are leading the smart device era as an essential component of portable electronic devices. From the materials aspect, new and creative solutions are required to resolve the current technical issues on advanced lithium (Li) batteries and improve their safety. Metal-organic frameworks (MOFs) are considered as tempting candidates to satisfy the requirements of advanced energy storage technologies. In this review, we discuss the

“…The electrical conductivity of the host material is another crucial aspect to consider when designing the carbon-based framework, because it facilitates continuous electron transport and limits electrode polarization. Therefore, a highly conductive framework can result in fast Li-ion transportation and capture [ 78 ]. Nevertheless, if the electrical conductivity of the host material is non-uniform, this could result in irregular Li deposition, since the regions of higher electrical conductivity quickly capture more Li ions compared to other regions of lower conductivity [ 85–87 ].…”

Section: Principles Toward Utilizing Carbon-based Framework As LI Hos...mentioning

confidence: 99%

Porous carbon architectures with different dimensionalities for lithium metal storage

Qutaish

Science and Technology of Advanced Materials

Rehman

et al. 2022

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Lithium metal batteries have recently gained tremendous attention owing to their high energy capacity compared to other rechargeable batteries. Nevertheless, lithium (Li) dendritic growth causes low Coulombic efficiency, thermal runaway, and safety issues, all of which hinder the practical application of Li metal as an anodic material. In this review, the failure mechanisms of Li metal anode are described according to its infinite volume changes, unstable solid electrolyte interphase, and Li dendritic growth. The fundamental models that describe the Li deposition and dendritic growth, such as the thermodynamic, electrodeposition kinetics, and internal stress models are summarized. From these considerations, porous carbon-based frameworks have emerged as a promising strategy to resolve these issues. Thus, the main principles of utilizing these materials as a Li metal host are discussed. Finally, we also focus on the recent progress on utilizing one-, two-, and three-dimensional carbon-based frameworks and their composites to highlight the future outlook of these materials.