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Organopolysulfides as high-performance cathode materials for rechargeable aluminum-ion batteries

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Journal of Materials Science & Technology 2023年第23期154卷 159-165页

作者： Weiqin Chu Xu Zhang Fulong Zhu Shuaixia Li Yongzhu Fu Haijun Yu Institute of Advanced Battery Materials and Devices Faculty of Materials and Manufacturing Beijing University of Technology Beijing 100124 China Key Laboratory of Advanced Functional Materials Ministry of Education Beijing University of Technology Beijing 100124 China College of Chemistry Zhengzhou University Zhengzhou 450001 China

The development of aluminum-ion batteries(AIBs)is significantly confined by the limited high-performance cathode ***,organopolysulfides are investigated as active cathode materials to fabricate AIBs.A liquid-phase phenyl tetrasulfide(PTS)can deliver a capacity above 600 mAh g−1 after activation,with the maintenance of 253 mAh g−1 after 100 *** to the different S locations,PTS shows several voltage plateaus and an average voltage of∼0.7 V ***3+/Al with no decay upon *** importantly,the liquid PTS can serve as a high-Coulombic-efficiency cathode(∼99.88%±0.57%after stabilization),enlighting the design of high-efficiency and low-resistance conversion-type cathode materials for *** experimental characterizations accompanied by theoretical calculations,it is found that PTS undergoes stepwise reaction procedures during discharge with final products of Al2S3 and AlCl2-coordinated phenyl sulfide,and partially reforms with elemental S and other organopolysulfides during *** study demonstrates new opportunities for the design of high-efficiency conversion-type cathode materials for advanced AIBs.

关键词： aluminum-ion batteries Cathode materials Organopolysulfides High coulombic efficiency

High‑Defect‑Density Graphite for Superior‑Performance aluminum‑ion batteries with Ultra‑Fast Charging and Stable Long Life

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Nano-Micro Letters 2021年第11期13卷 168-189页

作者： Jisu Kim Michael Ruby Raj Gibaek Lee Advanced Energy Materials Design Lab School of Chemical EngineeringYeungnam UniversityGyeongsan 38541Republic of Korea

Rechargeable aluminum-ion batteries(AIBs)are a new generation of low-cost and large-scale electrical energy storage ***,AIBs suffer from a lack of reliable cathode materials with insufficient intercalation sites,poor ion-conducting channels,and poor diffusion dynamics of large chloroaluminate anions(AlCl4−and Al2Cl7−).To address these issues,surfacemodified graphitic carbon materials[i.e.,acidtreated expanded graphite(AEG)and base-etched graphite(BEG)]are developed as novel cathode materials for ultra-fast chargeable *** has more turbostratically ordered structure covered with abundant micro-to nano-sized pores on the surface structure and expanded interlayer distance(d002=0.3371 nm)realized by surface treatment of pristine graphite with acidic media,which can be accelerated the diffusion dynamics and efficient AlCl4−ions(de)-intercalation *** AIB system employing AEG exhibits a specific capacity of 88.6 mAh g^(−1)(4 A g^(−1))and~80 mAh g^(−1) at an ultra-high current rate of 10 A g^(−1)(~99.1%over 10,000 cycles).BEG treated with KOH solution possesses the turbostratically disordered structure with high density of defective sites and largely expanded d-spacing(d002=0.3384 nm)for attracting and uptaking more AlCl4−ions with relatively shorter penetration ***,the AIB system based on the BEG cathode delivers a high specific capacity of 110 mAh g^(−1)(4 A g^(−1))and~91 mAh g^(−1)(~99.9%over 10,000 cycles at 10 A g^(−1)).Moreover,the BEG cell has high energy and power densities of 247 Wh kg^(−1) and 44.5 kW kg^(−1).This performance is one of the best among the AIB graphitic carbon materials reported for chloroaluminate anions storage *** finding provides great significance for the further development of rechargeable AIBs with high energy,high power density,and exceptionally long life.

关键词： Surface modification Etched graphite Cathode materials Energy storage aluminum-ion batteries

Designing electrode materials for aluminum-ion batteries towards fast diffusion and multi-electron reaction

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Journal of Energy Chemistry 2021年第9期30卷 229-232页

作者： Lumin Zheng Haoyi Yang Ying Bai Chuan Wu School of Materials Science&Engineering Beijing Institute of TechnologyBeijing 100081China

Since the electrochemical energy storage was invented, mobile has brought us a new world without wires for more electronic devices [1–4]. aluminum ion batteries(AIBs) were born with the requirements of electrochemica... 详细信息

关键词： aluminum-ion batteries Theory research Electrode materials Dynamics Multi-electron reaction

An efficient molten-salt electro-deoxidation strategy enabling fast-kinetics and long-life aluminum-selenium batteries

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SusMat 2024年第1期4卷 126-139页

作者： Jiguo Tu Zheng Huang Cheng Chang Haiping Lei Shuai Wang Shuqiang Jiao State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijingChina School of Chemistry Chemical Engineering and BiotechnologyNanyang Technological UniversitySingaporeSingapore School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijingChina School of Electrical and Electronic Engineering Nanyang Technological UniversitySingaporeSingapore

aluminum-selenium(Al-Se)batteries have been considered as one of the most promising energy storage systems owing to their high capacity,energy density,and cost effectiveness,but Se falls challenges in addressing the shuttle effect of soluble intermediate product and sluggish reaction kinetics in the solid-solid conversion process during ***,we propose an unprecedented design concept for fabricating uniform Se/C hollow microspheres with controllable morphologies through low-temperature electro-deoxidation in neutral NaCl-AlCl_(3) molten salt *** Se/C hollow microspheres are demonstrated to hold a favorable hollow structure for hosting Se,which can not only suppress the dissolution of soluble intermediate products into the electrolyte,thereby maintaining the structural integrity and maximizing Se utilization of the active material,but also promote the electrical/ionic conductivity,thus facilitating the rapid reaction kinetics during ***,the as-prepared Se/C hollow microspheres exhibit a high reversible capacity of 720.1 mAh g^(−1)at 500 mA g^(−1).Even at the high current density of 1000 mA g^(−1),Se/C delivers a high discharge capacity of 564.0 mAh g^(−1),long-term stability over 1100 cycles and high Coulombic efficiency of 98.6%.This present work provides valuable insights into short-process recovery of advanced Se-containingmaterials and value-added utilization for energy storage.

关键词： aluminum-ion batteries hollow Se/C microspheres long-term cycling stability lowtemperature electro-deoxidation NaCl-AlCl_(3)molten salt

Additive‑Driven Interfacial Engineering of aluminum Metal Anode for Ultralong Cycling Life

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Nano-Micro Letters 2023年第2期15卷 143-160页

作者： Sonal Kumar Prasad Rama Gaoliang Yang Wei Ying Lieu Deviprasath Chinnadurai Zhi Wei Seh Institute of Materials Research and Engineering Agency for ScienceTechnology and Research(A*STAR)2 Fusionopolis WayInnovisSingapore 138634Singapore Department of Chemistry and Molecular Biology University of Gothenburg41125 GothenburgSweden Pillar of Engineering Product Development Singapore University of Technology and Design8 Somapah RoadSingapore 487372Singapore

Rechargeable Al batteries(RAB)are promising candidates for safe and environmentally sustainable battery systems with low-cost ***,the currently used aluminum chloridebased electrolytes present a significant challenge to commercialization due to their corrosive ***,we report for the first time,a novel electrolyte combination for RAB based on aluminum trifluoromethanesulfonate(Al(OTf)_(3))with tetrabutylammonium chloride(TBAC)additive in *** presence of a mere 0.1 M of TBAC in the Al(OTf)_(3) electrolyte generates the charge carrying electrochemical species,which forms the basis of reaction at the *** reduces the charge transfer resistance and the surface activation energy at the anode surface and also augments the dissociation of Al(OTf)_(3) to generate the solid electrolyte interphase *** electrolyte’s superiority directly translates into reduced anodic overpotential for cells that ran for 1300 cycles in Al plating/stripping tests,the longest cycling life reported to *** unique combination of salt and additive is non-corrosive,exhibits a high flash point and is cheaper than traditionally reported RAB electrolyte combinations,which makes it commercially *** this report,we address a major roadblock in the commercialization of RAB and inspire equivalent electrolyte fabrication approaches for other metal anode batteries.

关键词： aluminum-ion batteries Solid electrolyte interphase Electrolyte additives Non-aqueous electrolytes