Revealing the role of crystal orientation of protective layers for stable zinc anode

Nature Communications, Journal Year: 2020, Volume and Issue: 11(1)

Published: Aug. 7, 2020

Abstract Rechargeable aqueous zinc-ion batteries are a promising candidate for next-generation energy storage devices. However, their practical application is limited by the severe safety issue caused uncontrollable dendrite growth on zinc anodes. Here we develop faceted titanium dioxide with relatively low affinity, which can restrict formation and homogenize deposition when served as protective layer The as-prepared anodes be stripped plated steadily more than 460 h voltage hysteresis flat plateau in symmetric cells. This work reveals key role of crystal orientation affinity its internal mechanism suitable various materials applied surface modification other metal such lithium sodium.

Language: Английский

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Review of Emerging Concepts in SEI Analysis and Artificial SEI Membranes for Lithium, Sodium, and Potassium Metal Battery Anodes

Advanced Energy Materials, Journal Year: 2020, Volume and Issue: 10(43)

Published: Oct. 7, 2020

Abstract Anodes for lithium metal batteries, sodium and potassium batteries are susceptible to failure due dendrite growth. This review details the structure–chemistry–performance relations in membranes that stabilize anodes’ solid electrolyte interphase (SEI), allowing stable electrochemical plating/stripping. Case studies involving Li, Na, K presented illustrate key concepts. “Classical” versus “modern” understandings of SEI described, with an emphasis on new structural insights obtained through novel analytical techniques, including situ liquid‐secondary ion mass spectroscopy, titration gas chromatography, tip‐enhanced Raman spectroscopy. Review highlights diverse approaches increasing stability, either by inserting a secondary layer between native separator, or combining membrane form hybrid composite. Exciting nonintuitive findings discussed, such as anode roughness profoundly affects structure organic artificial SEI‐layers may be more effective than inorganic–organic SEIs. Emerging multifunctional architectures presented, which serve dual role hosts surface protection layers. Throughout Review, fruitful future research directions critical areas where there is incomplete understanding discussed.

Language: Английский

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Recent Advances in Vanadium‐Based Aqueous Rechargeable Zinc‐Ion Batteries

Advanced Energy Materials, Journal Year: 2020, Volume and Issue: 10(25)

Published: May 15, 2020

Abstract Aqueous zinc‐ion batteries (AZIBs) have attracted considerable attention as promising next‐generation power sources because of the abundance, low cost, eco‐friendliness, and high security Zn resources. Recently, vanadium‐based materials cathodes in AZIBs gained interest owing to their rich electrochemical interaction with 2+ theoretical capacity. However, existing are still far from meeting commercial requirements. This article summarizes recent advances rational design toward AZIBs. In particular, it highlights various tactics that been reported increase intercalation space, structural stability, diffusion ability guest , well explores structure‐dependent performance corresponding energy storage mechanism. Furthermore, this achievements optimization aqueous electrolytes anodes resolve issues remain anodes, including dendrite formation, passivation, corrosion, coulombic efficiency plating/stripping. The rationalization these research findings can guide further investigations cathode/anode for

Language: Английский

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Anode‐Free Full Cells: A Pathway to High‐Energy Density Lithium‐Metal Batteries

Advanced Energy Materials, Journal Year: 2020, Volume and Issue: 11(2)

Published: May 7, 2020

Abstract The development of high‐energy density batteries is critical to the decarbonization transportation and power generation sectors. For any given lithium‐containing cathode system, anode‐free full cell configuration, which eliminates excess lithium pairs fully lithiated with a bare current collector, can deliver maximum possible energy density. absence free metal during assembly confers significant practical advantages as well. It also ideal framework for developing thorough understanding deposition in conjunction various systems. However, poor efficiencies plating stripping lead rapid inventory loss cycle life. In last few years, multiple studies have demonstrated application advanced electrolytes, modified collectors, optimized formation cycling parameters stabilize improve life (80% capacity retention) 100 cycles beyond. This review provides an overview strategies toward sustaining cells summarizes work undertaken this nascent field. expected that further improvement upon these combinatorial approach enable lives far what has been achieved so far.

Language: Английский

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Design strategies for nonaqueous multivalent-ion and monovalent-ion battery anodes

Nature Reviews Materials, Journal Year: 2020, Volume and Issue: 5(4), P. 276 - 294

Published: Feb. 10, 2020

Language: Английский

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Sodium-ion battery anodes: Status and future trends

EnergyChem, Journal Year: 2019, Volume and Issue: 1(2), P. 100012 - 100012

Published: July 29, 2019

Language: Английский

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Toward Green Battery Cells: Perspective on Materials and Technologies

Small Methods, Journal Year: 2020, Volume and Issue: 4(7)

Published: April 6, 2020

Abstract Research and development of advanced rechargeable battery technologies is dominated by application‐specific targets, which predominantly focus on cost performance including high gravimetric energy, volumetric related power densities, while ensuring a safety long lifetime. The need for high‐performance low‐cost batteries driven the growing market electromobility, in order to fulfill key requirements, such as sufficient driving range fast charging ability, achieving broad consumer acceptance. Currently, lithium ion (LIB) one state‐of‐the‐art able meet most these requirements at reasonable cost. In addition costs, environmental impact, i.e., sustainability particular cell over whole life cycle—i.e., from raw material extraction production, pack utilization, possibilities second usage recycling—does receive continuously increasing attention. Within this review, different approaches “greener” are introduced with view complete cycle, focusing LIB technology. Moreover, alternative critically evaluated regarding their aspects competitiveness.

Language: Английский

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Sulfur‐Grafted Hollow Carbon Spheres for Potassium‐Ion Battery Anodes

Advanced Materials, Journal Year: 2019, Volume and Issue: 31(30)

Published: June 3, 2019

Sulfur-rich carbons are minimally explored for potassium-ion batteries (KIBs). Here, a large amount of S (38 wt%) is chemically incorporated into carbon host, creating sulfur-grafted hollow spheres (SHCS) KIB anodes. The SHCS architecture provides combination nanoscale (≈40 nm) diffusion distances and CS chemical bonding to minimize cycling capacity decay Coulombic efficiency (CE) loss. exhibit reversible 581 mAh g-1 (at 0.025 A ), which the highest reported any carbon-based anode. Electrochemical analysis S-free baseline demonstrates that both matrix sulfur species highly electrochemically active. also show excellent rate capability, achieving 202, 160, 110 at 1.5, 3, 5 , respectively. electrode maintains 93% from 5th 1000th cycle 3 with steady-state CE being near 100%. Raman indicates breakage SS bonds upon potassiation 0.01 V versus K/K+ . galvanostatic intermittent titration technique (GITT) voltage-dependent K+ coefficients range 10-10 10-12 cm2 s-1 depotassiation, approximately five times higher coefficient former.

Language: Английский

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Applying Classical, Ab Initio, and Machine-Learning Molecular Dynamics Simulations to the Liquid Electrolyte for Rechargeable Batteries

Chemical Reviews, Journal Year: 2022, Volume and Issue: 122(12), P. 10970 - 11021

Published: May 16, 2022

Rechargeable batteries have become indispensable implements in our daily life and are considered a promising technology to construct sustainable energy systems the future. The liquid electrolyte is one of most important parts battery extremely critical stabilizing electrode–electrolyte interfaces constructing safe long-life-span batteries. Tremendous efforts been devoted developing new solvents, salts, additives, recipes, where molecular dynamics (MD) simulations play an increasingly role exploring structures, physicochemical properties such as ionic conductivity, interfacial reaction mechanisms. This review affords overview applying MD study electrolytes for rechargeable First, fundamentals recent theoretical progress three-class summarized, including classical, ab initio, machine-learning (section 2). Next, application exploration electrolytes, probing bulk structures 3), deriving macroscopic conductivity dielectric constant 4), revealing mechanisms 5), sequentially presented. Finally, general conclusion insightful perspective on current challenges future directions provided. Machine-learning technologies highlighted figure out these challenging issues facing research promote rational design advanced next-generation

Language: Английский

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MXene‐Based Dendrite‐Free Potassium Metal Batteries

Advanced Materials, Journal Year: 2019, Volume and Issue: 32(4)

Published: Nov. 29, 2019

Abstract Potassium metal batteries are considered as attractive alternatives beyond lithium‐ion batteries. However, uncontrollable dendrite growth on the potassium anode has restrained their practical applications. A high‐performance achieved by confining into a titanium‐deficient nitrogen‐containing MXene/carbon nanotube freestanding scaffold is reported. The high electronic transport and fast diffusion in this enable reduced local current density homogeneous ionic flux during plating/stripping processes. Furthermore, verified theoretical calculations experimental investigations, such “potassium‐philic” MXene sheets can induce nucleation of potassium, guide to uniformly distribute upon cycling. Consequently, as‐developed anodes exhibit dendrite‐free morphology with Coulombic efficiency long cycle life Such also deliver significantly improved electrochemical performances potassium–sulfur compared bare anodes. This work provide new avenue for developing metal‐based

Language: Английский

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