Breathing parylene-based nanothin artificial SEI for highly-stable long life three-dimensional silicon lithium-ion batteries

Harpak, Nimrod; Davidi, Guy; Patolsky, Fernando

doi:10.1016/j.cej.2021.132077

Cited by 29 publications

(20 citation statements)

References 42 publications

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“…The conductive diffusion barrier design could also be expanded to other current collectors such as carbon based and stainless-steel fibers aiming toward improved performance for various battery type applications. 34–36 Consequently, Si NWs directly grown on a current collector enhance LIB anode performances with minimal hindrance from bulk-like structures.…”

Section: Resultsmentioning

confidence: 99%

“…The conductive diffusion barrier design could also be expanded to other current collectors such as carbon based and stainless-steel bers aiming toward improved performance for various battery type applications. [34][35][36] Consequently, Si NWs directly grown on a current collector enhance LIB anode performances with minimal hindrance from bulk-like structures.…”

Section: Resultsmentioning

confidence: 99%

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A controlled nucleation and growth of Si nanowires by using a TiN diffusion barrier layer for lithium-ion batteries

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

A controlled nucleation and growth of Si nanowires by using a TiN diffusion barrier layer for lithium-ion batteries

et al. 2022

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“…In this context, stainless steel is utilized solely as casing parts, and seldom as current collectors, due to its chemical inertness and high electronic conductivity. Previous studies indicate that stainless steel’s potential can be unlocked by using its endogenous metal species as self-catalyzing agents that allow the growth of different forms of nanomaterials via the introduction of external coreagents. ,, However, the ability of the steel substrate to act as a self-catalytic bed for the growth of nanomaterials in a “reagentless” manner, strictly consisting of the elements assembling the steel, is hardly investigated . Successful reagentless synthesis would not only impact the potential future uses of this commonly known, chemically inert material, but may also prove as a universal method of solid-state chemo-morphological transformation of many grades of steel substrates.…”

Section: Results and Discussionmentioning

confidence: 99%

Three-Dimensional Monolithically Self-Grown Metal Oxide Highly Dense Nanonetworks as Free-Standing High-Capacity Anodes for Lithium-Ion Batteries

Cohen

Harpak

Juhl

et al. 2022

ACS Appl. Mater. Interfaces

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Transition metal oxides (TMOs) have been widely studied as potential next-generation anode materials, owing to their high theoretical gravimetric capacity. However, to date, these anodes syntheses are plagued with time-consuming preparation processes, two-dimensional electrode fabrication, binder requirements, and short operational cycling lives. Here, we present a scalable single-step reagentless process for the synthesis of highly dense Mn 3 O 4 -based nanonetwork anodes based on a simple thermal treatment transformation of low-grade steel substrates. The monolithic solid-state chemical self-transformation of the steel substrate results in a highly dense forest of Mn 3 O 4 nanowires, which transforms the electrochemically inactive steel substrate into an electrochemically highly active anode. The proposed method, beyond greatly improving the current TMO performance, surpasses state-of-the-art commercial silicon anodes in terms of capacity and stability. The three-dimensional self-standing anode exhibits remarkably high capacities (>1500 mA h/g), a stable cycle life (>650 cycles), high Coulombic efficiencies (>99.5%), fast rate performance (>1.5 C), and high areal capacities (>2.5 mA h/cm 2 ). This novel experimental paradigm acts as a milestone for nextgeneration anode materials in lithium-ion batteries, and pioneers a universal method to transform different kinds of widely available, low-cost, steel substrates into electrochemically active, free-standing anodes and allows for the massive reduction of anode production complexity and costs.

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“…The large surface area and high reactivity of silicon (especially nano Si materials) pose challenges for Si electrode stability due to the unwanted reactions of organic electrolytes on the Si surface, and consequently, it is desirable to modify the silicon surface for tuning the contact between electrolyte and Si active materials [78]. For example, a parylene-based artificial SEI has recently been reported for engineering Si electrode interface [79]. The deposition could be uniformly controlled down to 30 nm, leading to the formation of highly stable and elastic parylene layer to protect the Si electrodes.…”

Section: Monolayersmentioning

confidence: 99%

“…Electrochem 2021, 2, FOR PEER REVIEW 8 parylene-based artificial SEI has recently been reported for engineering Si electrode interface [79]. The deposition could be uniformly controlled down to 30 nm, leading to the formation of highly stable and elastic parylene layer to protect the Si electrodes.…”

Section: Monolayersmentioning

confidence: 99%

Recent Applications of Molecular Structures at Silicon Anode Interfaces

Chen¹,

Liu²

2021

Electrochem

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Silicon (Si) is a promising anode material to realize many-fold higher anode capacity in next-generation lithium-ion batteries (LIBs). Si electrochemistry has strong dependence on the property of the Si interface, and therefore, Si surface engineering has attracted considerable research interest to address the challenges of Si electrodes such as dramatic volume changes and the high reactivity of Si surface. Molecular nanostructures, including metal–organic frameworks (MOFs), covalent–organic frameworks (COFs) and monolayers, have been employed in recent years to decorate or functionalize Si anode surfaces to improve their electrochemical performance. These materials have the advantages of facile preparation, nanoscale controllability and structural diversity, and thus could be utilized as versatile platforms for Si surface modification. This review aims to summarize the recent applications of MOFs, COFs and monolayers for Si anode development. The functionalities and common design strategies of these molecular structures are demonstrated.

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Breathing parylene-based nanothin artificial SEI for highly-stable long life three-dimensional silicon lithium-ion batteries

Cited by 29 publications

References 42 publications

A controlled nucleation and growth of Si nanowires by using a TiN diffusion barrier layer for lithium-ion batteries

A controlled nucleation and growth of Si nanowires by using a TiN diffusion barrier layer for lithium-ion batteries

Three-Dimensional Monolithically Self-Grown Metal Oxide Highly Dense Nanonetworks as Free-Standing High-Capacity Anodes for Lithium-Ion Batteries

Recent Applications of Molecular Structures at Silicon Anode Interfaces

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