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Articles by Khalil Amine
Nanoengineering of non-aqueous liquid electrolyte solutions for future lithium metal batteries - Nature Nanotechnology
Abstract Research and development of non-aqueous electrolyte solutions are essential for practical advancement towards the production of high-energy lithium metal batteries (LMBs). An ideal LMB electrolyte solution should enable highly efficient, uniform and prolonged lithium metal plating and stripping, preserve the electrodes’ electro(chemo)mechanical properties and ensure compatibility with all cell components.
Low-nickel cathode chemistry for sustainable and high-energy lithium-ion batteries - Nature Sustainability
Abstract The transition to sustainable energy storage demands lithium-ion batteries with high energy density and reduced reliance on critical metals such as nickel (Ni), yet current strategies to increase capacity have largely depended on raising Ni content, leading to escalating supply risks, rising costs and sustainability concerns.
Gas-mediated defect engineering in earth-abundant Mn-rich layered oxides for non-aqueous sodium-based batteries - Nature Nanotechnology
Abstract Gases are often by-products of battery materials during cell formation and degradation, affecting the cycle life and safety of rechargeable batteries. However, understanding gas-mediated (electro)-chemical reactions and nanoscale structural transformations during the synthesis of battery electrode materials remains challenging because of the lack of suitable characterization routes and the complexity of the interplay between thermodynamics and kinetics.
Manganese‐Based Spinel Cathodes: A Promising Frontier for Solid‐State Lithium‐Ion Batteries
1 Introduction Lithium-ion batteries (LIBs) have become increasingly vital for efficiently storing and delivering electrical energy.
Intralattice-bonded phase-engineered ultrahigh-Ni single-crystalline cathodes suppress strain evolution - Nature Energy
Abstract Single crystallization remains a debated strategy for advancing Ni-rich cathode materials. While it mitigates particle cracking and improves tap density by eliminating particle boundaries, extended diffusion pathways introduce volumetric and lattice distortions, compromising electrochemical and structural stability. These challenges hinder the commercialization of high-Ni single-crystal cathodes, calling for a reassessment of their viability.
Unraveling the origin of air-stability in single-crystalline layered oxide positive electrode materials - Nature Communications
Abstract Single-crystalline Ni-rich layered oxides present compelling advantages over conventional polycrystalline counterparts toward large-scale applications, including enhanced mechanical stability and higher energy density. Nevertheless, the deleterious effects of air exposure, which is inevitable in industrial processing, on their structure and electrochemical performance remain poorly understood.
Industrializable interlayer with catalytic conversion of dead lithium for Ah–level Nickel–rich lithium metal batteries - Nature Communications
Abstract The growth of lithium (Li) dendrites and the accumulation of dead Li (i.e., Li metal regions which are electronically disconnected from the current collector) significantly undermine the safety and performance of Li metal batteries. This study employs kilogram–scale atomic layer deposition technology to construct zinc oxide with a preferential (002) crystal orientation, which homogeneously forms on commercial carbon nanotube papers.
High-entropy sulfoselenide as negative electrodes with fast kinetics and high stability for sodium-ion batteries - Nature Communications
Abstract Conversion electrodes offer higher reversible capacity and lower cost than conventional intercalation chemistry electrodes, but suffer from kinetic limitation and large volume expansion. Despite significant efforts, developing conversion electrodes with fast charging capability and extended lifespan remains challenging.
Global Regulations for Sustainable Battery Recycling: Challenges and Opportunities
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
Improving the fast-charging capability of NbWO-based Li-ion batteries - Nature Communications
Abstract The discovery of Nb-W-O materials years ago marks the milestone of charging a lithium-ion battery in minutes. Nevertheless, for many applications, charging lithium-ion battery within one minute is urgently demanded, the bottleneck of which largely lies in the lack of fundamental understanding of Li+ storage mechanisms in these materials.
Synthesis of monocrystalline lithium for high-critical-current-density solid-state batteries - Nature Synthesis
Abstract Lithium metal is the Holy Grail anode material for high-energy-density batteries. Unfortunately, applications of Li metal anodes are restricted by their inherent propensity to form dendrites at practical current densities. Here we present an approach that directly converts commercial polycrystalline Li (poly-Li) into various monocrystalline Li metal anodes with single facets via a recrystallization technique.
North America’s Potential for an Environmentally Sustainable Nickel, Manganese, and Cobalt Battery Value Chain
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
Zn2+-mediated catalysis for fast-charging aqueous Zn-ion batteries - Nature Catalysis
Abstract Rechargeable aqueous zinc-ion batteries (AZIBs), renowned for their safety, high energy density and rapid charging, are prime choices for grid-scale energy storage. Historically, ion-shuttling models centring on ion-migration behaviour have dominated explanations for charge/discharge processes in aqueous batteries, like classical ion insertion/extraction and pseudocapacitance mechanisms.
Unrecoverable lattice rotation governs structural degradation of single-crystalline cathodes
Research Article BATTERIES Weiyuan Huang https://orcid.org/0000-0001-7035-2210, Tongchao Liu https://orcid.org/0000-0002-6010-3891 liut@anl.gov, [...] , Lei Yu, Jing Wang https://orcid.org/0000-0003-3684-3643, [...] , Tao Zhou https://orcid.org/0000-0002-8093-7666 liut@anl.gov, Junxiang Liu https://orcid.org/0000-0002-8256-1770, Tianyi Li https://orcid.org/0000-0002-6234-6096, Rachid Amine, Xianghui Xiao https://orcid.org/0000-0002-7142-3452, [...] , Mingyuan Ge...
Sustainable layered cathode with suppressed phase transition for long-life sodium-ion batteries - Nature Sustainability
Abstract Sodium-ion batteries are among the most promising alternatives to lithium-based technologies for grid and other energy storage applications due to their cost benefits and sustainable resource supply. For the cathode—the component that largely determines the energy density of a sodium-ion battery cell—one major category of materials is P2-type layered oxides.
Achieving a high-performance sodium-ion pouch cell by regulating intergrowth structures in a layered oxide cathode with anionic redox - Nature Energy
Abstract In P2-type layered transition metal (TM) oxides, which are typical cathode materials for Na-ion batteries, the presence of Li within the TM layer could lead to the formation of specific Na–O–Li configurations that trigger additional oxygen redox at high charging voltages. However, the prismatic-type (P-type) to octahedral-type (O-type) phase transition and irreversible TM migration could be simultaneously aggravated in high state of charge, resulting in structural distortion.
Revealing the aging process of solid electrolyte interphase on SiOx anode - Nature Communications
Abstract As one of the most promising alternatives to graphite negative electrodes, silicon oxide (SiOx) has been hindered by its fast capacity fading. Solid electrolyte interphase (SEI) aging on silicon SiOx has been recognized as the most critical yet least understood facet.
Revealing the closed pore formation of waste wood-derived hard carbon for advanced sodium-ion battery - Nature Communications
Abstract Although the closed pore structure plays a key role in contributing low-voltage plateau capacity of hard carbon anode for sodium-ion batteries, the formation mechanism of closed pores is still under debate. Here, we employ waste wood-derived hard carbon as a template to systematically establish the formation mechanisms of closed pores and their effect on sodium storage performance.
Probing the Effectiveness in Stabilizing Lithium Metal Anodes through Functional Additives
Download Hi-Res ImageDownload to MS-PowerPointCite This:ACS Appl. Mater. Interfaces 2023, XXXX, XXX Terms & Conditions Most electronic Supporting Information files are available without a subscription to ACS Web Editions. Such files may be downloaded by article for research use (if there is a public use license linked to the relevant article, that license may permit other uses).
Visualizing interfacial collective reaction behaviour of Li–S batteries - Nature
Abstract Benefiting from high energy density (2,600 Wh kg−1) and low cost, lithium–sulfur (Li–S) batteries are considered promising candidates for advanced energy-storage systems1,2,3,4. Despite tremendous efforts in suppressing the long-standing shuttle effect of lithium polysulfides5,6,7, understanding of the interfacial reactions of lithium polysulfides at the nanoscale remains elusive.
Triarylmethyl cation redox mediators enhance Li–O2 battery discharge capacities - Nature Chemistry
Abstract A major impediment to Li–O2 battery commercialization is the low discharge capacities resulting from electronically insulating Li2O2 film growth on carbon electrodes. Redox mediation offers an effective strategy to drive oxygen chemistry into solution, avoiding surface-mediated Li2O2 film growth and extending discharge lifetimes. As such, the exploration of diverse redox mediator classes can aid the development of molecular design criteria.
Understanding intercalation chemistry for sustainable aqueous zinc–manganese dioxide batteries - Nature Sustainability
Abstract Rechargeable aqueous Zn–MnO2 technology combines one of the oldest battery chemistries with favourable sustainability characteristics, including safety, cost and environmental compatibility. However, the ambiguous charge storage mechanism presents a challenge to fulfil the great potential of this energy technology.
Development of high-energy non-aqueous lithium-sulfur batteries via redox-active interlayer strategy - Nature Communications
Abstract Lithium-sulfur batteries have theoretical specific energy higher than state-of-the-art lithium-ion batteries. However, from a practical perspective, these batteries exhibit poor cycle life and low energy content owing to the polysulfides shuttling during cycling. To tackle these issues, researchers proposed the use of redox-inactive protective layers between the sulfur-containing cathode and lithium metal anode.
Origin of structural degradation in Li-rich layered oxide cathode - Nature
Abstract Li- and Mn-rich (LMR) cathode materials that utilize both cation and anion redox can yield substantial increases in battery energy density1,2,3.
Atomically dispersed Pt and Fe sites and Pt–Fe nanoparticles for durable proton exchange membrane fuel cells - Nature Catalysis
Abstract Proton exchange membrane fuel cells convert hydrogen and oxygen into electricity without emissions. The high cost and low durability of Pt-based electrocatalysts for the oxygen reduction reaction hinder their wide application, and the development of non-precious metal electrocatalysts is limited by their low performance. Here we design a hybrid electrocatalyst that consists of atomically dispersed Pt and Fe single atoms and Pt–Fe alloy nanoparticles.
Origin and regulation of oxygen redox instability in high-voltage battery cathodes - Nature Energy
Abstract Oxygen redox at high voltage has emerged as a transformative paradigm for high-energy battery cathodes such as layered transition-metal oxides by offering extra capacity beyond conventional transition-metal redox. However, these cathodes suffer from voltage hysteresis, voltage fade and capacity drop upon cycling. Single-crystalline cathodes have recently shown some improvements, but these challenges remain.
Entropy and crystal-facet modulation of P2-type layered cathodes for long-lasting sodium-based batteries - Nature Communications
Abstract P2-type sodium manganese-rich layered oxides are promising cathode candidates for sodium-based batteries because of their appealing cost-effective and capacity features. However, the structural distortion and cationic rearrangement induced by irreversible phase transition and anionic redox reaction at high cell voltage (i.e., >4.0 V) cause sluggish Na-ion kinetics and severe capacity decay.
Enabling high energy lithium metal batteries via single-crystal Ni-rich cathode material co-doping strategy - Nature Communications
Abstract High-capacity Ni-rich layered oxides are promising cathode materials for secondary lithium-based battery systems. However, their structural instability detrimentally affects the battery performance during cell cycling. Here, we report an Al/Zr co-doped single-crystalline LiNi0.88Co0.09Mn0.03O2 (SNCM) cathode material to circumvent the instability issue.
Green technologies
Materials science plays a major role in the development of green technologies, which are key to address climate change. Our collection of articles highlights advances in batteries and energy storage, solar energy, catalysis and approaches to create a sustainable future. A cost and resource analysis of sodium-ion batteries Sodium-ion batteries are an appealing alternative to lithium-ion batteries because they use raw materials that are less expensive, more abundant and less toxic.
Enabling Stable and High-Rate Cycling of Ni-Rich Layered Oxide Cathode for Lithium-Ion Batteries by Modification with an Artificial Li+-Conducting Cathode-Electrolyte Interphase
Enabling Stable and High-Rate Cycling of Ni-Rich Layered Oxide Cathode for Lithium-Ion Batteries by Modification with an Artificial Li+-Conducting Cathode-Electrolyte Interphase Ni-rich LiNi0.8Co0.1Mn0.1O2 (NCM811) cathodes are investigated to realize high energy density Li ion batteries for long life electric vehicle applications.
Author Correction: A high-energy and long-cycling lithium-sulfur pouch cell via a macroporous catalytic cathode with double-end binding sites
Author Correction: A high-energy and long-cycling lithium–sulfur pouch cell via a macroporous catalytic cathode with double-end binding sites Chen Zhao1,2, Gui-Liang Xu ORCID: orcid.org/0000-0001-9969-883X2, Zhou Yu3, Leicheng Zhang1, Inhui Hwang4, Yu-Xue Mo5, Yuxun Ren1, Lei Cheng ORCID: orcid.org/0000-0002-3902-16803, Cheng-Jun Sun4, Yang Ren ORCID: orcid.org/0000-0001-9831-60354, Xiaobing Zuo ORCID: orcid.org/0000-0002-0134-48044, Jun-Tao Li6, Shi-Gang Sun5, Khalil Amine ORCID:...
A high-energy and long-cycling lithium–sulfur pouch cell via a macroporous catalytic cathode with double-end binding sites - Nature Nanotechnology
Abstract Lithium–sulfur batteries are attractive alternatives to lithium-ion batteries because of their high theoretical specific energy and natural abundance of sulfur. However, the practical specific energy and cycle life of Li–S pouch cells are significantly limited by the use of thin sulfur electrodes, flooded electrolytes and Li metal degradation. Here we propose a cathode design concept to achieve good Li–S pouch cell performances.
Beyond the Polysulfide Shuttle and Lithium Dendrite Formation: Addressing the Sluggish Sulfur Redox Kinetics for Practical High‐Energy Li‐S Batteries
Research Article Chen Zhao Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong Chemical Science and Engineering Division, Argonne National Laboratory, 9700 S Cass Ave, Lemont, IL, 60439 USA Search for more papers by this author Dr. Gui‐Liang Xu Corresponding Author E-mail address: xug@anl.gov Chemical Science and Engineering Division, Argonne National Laboratory, 9700 S Cass Ave, Lemont, IL, 60439 USA...
Harnessing the surface structure to enable high-performance cathode materials for lithium-ion batteries
Harnessing the surface structure to enable high-performance cathode materials for lithium-ion batteries Luyi Yang, a Kai Yang,a Jiaxin Zheng,a Kang Xu,b Khalil Amine c and Feng Pan *a Author affiliations * Corresponding authors a School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen 518055, China E-mail: panfeng@pkusz.edu.cn b Energy Storage Branch, Sensor and Electron Devices Directorate, Power and Energy Division, US Army Research Laboratory, Adelphi, MD 20783,...
The Importance of Anode Protection towards Lithium Oxygen Batteries
The Importance of Anode Protection towards Lithium Oxygen Batteries Developing lithium oxygen (Li-O2) batteries is critical to achieve high energy density in energy storage devices. Benefiting by the low weight of the cathode reagent, oxygen, Li-O2 batteries possess a high theoretical energy density of 3500 Wh kg-1 based on the formation of Li2O2. However, they face several challenges from the metal anode, the air electrode, and the unstable electrolyte.
Establishment of Selection Rule for Hydrofluoroether as Electrolyte Co‐solvent through Linear Free‐Energy Relationship in Lithium‐Sulfur Batteries
The full text of this article hosted at iucr.org is unavailable due to technical difficulties.
Reversible Redox Chemistry of Azo Compounds for Sodium Ion Batteries
Sustainable sodium ion batteries (SSIBs) using renewable organic electrodes are promising alternatives to lithium ion batteries for large-scale renewable energy storage. However, the lack of high performance anode material impedes the development of SSIBs. Here, we report a new type of organic anode material based on azo group for SSIBs. Azobenzene-4,4'-dicarboxylic acid sodium salt is used as a model to investigate the electrochemical behaviors and reaction mechanism of azo compound.
Dissolution, migration, and deposition of transition metal ions in Li-ion batteries exemplified by Mn-based cathodes - a critical review
Unlike the revolutionary advances in the anodes of lithium-ion batteries from Li intercalation materials to Li alloy and/or conversion reaction materials, the development of the cathode is still dominated by the Li intercalation compounds.
Dissolution, Migration, and Deposition of Transition Metal Ions in Li-ion Batteries Exampled by Mn-based cathodes- a Critical Review
Unlike the revolutionary advances in anodes of the lithium ion batteries from Li intercalation materials to Li alloy and/or conversion reaction materials, the development of the cathode is still dominated by the Li intercalation compounds.
Electrolyte design strategies and research progress for room-temperature sodium-ion batteries
Electrolyte design or functional development is very effective at promoting the performance of sodium-ion batteries, which are attractive for electrochemical energy storage devices due to abundant sodium resources and low cost. This review discusses recent advances on electrolytes for sodium–ion batteries and comprehensive electrolyte design strategies for various materials systems as well as functional applications.
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