Electronic State‐Modulated Ni4N/Zn3N2 Heterogeneous Nanosheet Arrays Toward Dendrite‐Free and Kinetic‐Enhanced Li‐S Full Batteries DOI Creative Commons
Qiwen Ran, Jintao Liu, Lei Li

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(38)

Published: April 26, 2024

Abstract The applications of lithium (Li)–sulfur (S) batteries are simultaneously hampered by the unlimited dendritic Li growth and sluggish redox kinetics polysulfides (LiPSs). In this work, an electronic state‐modulated Ni 4 N/Zn 3 N 2 heterogeneous nanosheet arrays is painstakingly fabricated on surface carbon cloth (CC@Ni ) as efficient bi‐service host to promote uniform deposition boost LiPSs catalysis. It found that structure heterostructure modulated realize a rational transition metal d‐band center, its built‐in electric field (BIEF) within heterointerfaces facilitates interfacial charge transfer, resulting in low deposition/migration energy barrier adsorption/catalytic conversion kinetics. As result, as‐prepared CC@Ni ‐Li anode can enable Li||Li symmetrical cells possess long‐term lifespan over 500 h even at 10 mA cm −2 /20 mAh , as‐assembled LiNi 0.8 Co 0.1 Mn O ||CC@Ni full cell also shows excellent cycling performance (95.8% capacity retention after 100 cycles). When used for both S loading, ‐S||CC@Ni exhibits outstanding stability (744 g −1 1000 cycles 2C). This work highlights great potential heterostructures fabricating ideal bi‐serve hosts electrodes.

Language: Английский

Rare Earth Single‐Atom Catalysis for High‐Performance Li−S Full Battery with Ultrahigh Capacity DOI
Rong Zhou,

Yongqiang Ren,

Weixin Li

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(31)

Published: May 18, 2024

Lithium-sulfur (Li-S) batteries have many advantages but still face problems such as retarded polysulfides redox kinetics and Li dendrite growth. Most reported single atom catalysts (SACs) for Li-S are based on d-band transition metals whose d orbital constitutes active valence band, which is inclined to occur catalyst passivation. SACs 4f inner of rare earth challenging their great difficulty be activated. In this work, we design synthesize the first metal Sm has electron-rich promote catalytic conversion uniform deposition Li. enhance catalysis by activated through an f-d-p hybridization. Using Sm-N

Language: Английский

Citations

18
Progresses and Prospects of Asymmetrically Coordinated Single Atom Catalysts for Lithium−Sulfur Batteries DOI Creative Commons
Rong Zhou, Shaonan Gu, Meng Guo

et al.

Energy & environment materials, Journal Year: 2024, Volume and Issue: 7(4)

Published: Feb. 11, 2024

Lithium–sulfur batteries (LSBs) are widely regarded as promising next‐generation due to their high theoretical specific capacity and low material cost. However, the practical applications of LSBs limited by shuttle effect lithium polysulfides (LiPSs), electronic insulation charge discharge products, slow LiPSs conversion reaction kinetics. Accordingly, introduction catalysts into is one effective strategy solve issues sluggished LiPS conversion. Because nearly 100% atom utilization electrocatalytic activity, single‐atom (SACs) have been used mediators for LSBs' reactions. Excitingly, SACs with asymmetric coordination structures exhibited intriguing superior catalytic activities when compared traditional M–N 4 active sites. In this review, we systematically describe recent advancements in installation asymmetrically coordinated structure reactions LSBs, including nitrogen SACs, heteroatom support bimetallic SACs. Particularly noteworthy discussion mechanism spanning Finally, a perspective on future developments LSB provided.

Language: Английский

Citations

17
Single‐atom electrocatalysts for lithium–sulfur chemistry: Design principle, mechanism, and outlook DOI Creative Commons
Yingze Song, Luwei Zou,

Chaohui Wei

et al.

Carbon Energy, Journal Year: 2022, Volume and Issue: 5(4)

Published: Dec. 5, 2022

Abstract Lithium–sulfur batteries (LSBs) have been regarded as one of the promising candidates for next‐generation “lithium‐ion battery beyond” owing to their high energy density and due low cost sulfur. However, main obstacles encountered in commercial implementation LSBs are notorious shuttle effect, retarded sulfur redox kinetics, uncontrolled dendrite growth. Accordingly, single‐atom catalysts (SACs), which ultrahigh catalytic efficiency, tunable coordination configuration, light weight, shown huge potential field date. This review summarizes recent research progress SACs applied multifunctional components LSBs. The design principles typical synthetic strategies toward effective Li–S chemistry well working mechanism promoting conversion reactions, inhibiting lithium polysulfide regulating Li + nucleation comprehensively illustrated. Potential future directions terms on realization commercially viable also outlined.

Language: Английский

Citations

51
A Universal Graphene‐Selenide Heterostructured Reservoir with Elevated Polysulfide Evolution Efficiency for Pragmatic Lithium–Sulfur Battery DOI
Menglei Wang, Yujie Zhu,

Yingjie Sun

et al.

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 33(6)

Published: Nov. 28, 2022

Abstract The practical application of lithium–sulfur (Li–S) batteries has been handicapped by the notorious polysulfide shuttling and sluggish sulfur conversion kinetics. Although functional modification separator is readily proposed as an effective strategy to optimize Li–S redox reactions, excessive material dosage invalid structural design still result in inferior electrocatalyst utilization. Herein, generic graphene‐metal selenide heterostructures (Gr‐M x Se y , M = Mo, W, Mn, Cu Zn) are controllably grown on commercial glass fiber (GF) employing a sequential low‐temperature chemical vapor deposition procedure. Such tailored reservoir can not only render ample active sites but also realize synergy polar catalytic framework, which maximizes electrochemical functions alleviating shuttle effect guiding Li 2 S nucleation/decomposition. thus‐derived Gr‐M /GF affording favorable heatproof feature endows battery with outstanding cycling stability (100% capacity retention over 100 cycles at 0.2 C). Furthermore, flexible pouch cell based this new delivers good device performance (with decay 0.25% per cycle cycles). This study offers comprehensive insight into reliable toward working batteries.

Language: Английский

Citations

44
Constructing Cooperative Interface via Bi‐Functional COF for Facilitating the Sulfur Conversion and Li+ Dynamics DOI
Qi An, Li-Lian Wang,

Genfu Zhao

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(4)

Published: Sept. 1, 2023

Abstract Lithium–sulfur (Li–S) batteries stand out for their high theoretical specific capacity and cost‐effectiveness. However, the practical implementation of Li–S is hindered by issues such as shuttle effect, tardy redox kinetics, dendrite growth. Herein, an appealingly designed covalent organic framework (COF) with bi‐functional active sites cyanide groups polysulfide chains (COF‐CN‐S) developed cooperative functional promoters to simultaneously address dendrites effect issues. Combining in situ techniques calculations, it can be demonstrated that unique chemical architecture COF‐CN‐S capable performing following functions: 1) The delivers significantly enhanced Li + transport capability due abundant ion‐hopping (cyano‐groups); 2) functions a selective ion sieve regulating dynamic behavior anions , thus inhibiting growth; 3) acting mediator, effectively control electrochemical polysulfides enhance conversion kinetics. Based on above advantages, endows excellent performance. This study highlights significance interface modification offers novel insights into rational design materials realm.

Language: Английский

Citations

38
Carbon-coated nitrogen, vanadium co-doped MXene interlayer for enhanced polysulfide shuttling inhibition in lithium-sulfur batteries DOI
Min Zheng,

Zhihong Luo,

Ya Song

et al.

Journal of Power Sources, Journal Year: 2023, Volume and Issue: 580, P. 233445 - 233445

Published: July 24, 2023

Language: Английский

Citations

36
Regulating Fe Aggregation State via Unique FeNV Pre‐Coordination to Optimize the Adsorption‐Catalysis Effect in High‐Performance Lithium‐Sulfur Batteries DOI

Lubin Yang,

Xiaowei Wang,

Xiaomin Cheng

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(38)

Published: May 23, 2023

Abstract Lithium‐sulfur batteries (LSBs) suffer from uncontrollable shuttling behavior of lithium polysulfides (LiPSs: Li 2 S x , 4 ≤ ≤8) and the sluggish reaction kinetics bidirectional liquid‐solid transformations, which are commonly coped through a comprehensive adsorption‐catalysis strategy. Herein, unique FeNV pre‐coordination is introduced to regulate content “dissociative Fe 3+ ” in liquid phase, realizing successful construction N‐doped micro‐mesoporous “urchin‐like” hollow carbon nanospheres decorated with single atom Fe‐N sites VN nanoparticles (denoted as SA‐Fe/VN@NMC). The strong chemisorption ability toward LiPSs catalyzed decomposition on VN, along boosted for sulfur reduction SA‐Fe experimentally theoretically evidenced. Moreover, nanoscale‐neighborhood distribution active presents synergistic effect anchoring‐reduction‐decomposition process species. Thus SA‐Fe/VN@NMC an optimized whole conversion. Therefore, based Li‐S cells exhibit high cyclic stability (a low decay 0.024% per cycle over 700 cycles at 1 C, content: 70 wt%) considerable rate performance (683.2 mAh g −1 C). Besides, areal capacity 5.06 cm −2 retained after 100 under loading 5.6 mg . This work provides new perspective design integrated electrocatalysts comprising hetero‐formed bimetals LSBs.

Language: Английский

Citations

32
Designing metal sulfide-based cathodes and separators for suppressing polysulfide shuttling in lithium-sulfur batteries DOI
Guoyin Zhu,

Qingzhu Wu,

Xianghua Zhang

et al.

Nano Research, Journal Year: 2023, Volume and Issue: 17(4), P. 2574 - 2591

Published: Nov. 3, 2023

Language: Английский

Citations

27
Intrinsic activity regulation of metal chalcogenide electrocatalysts for lithium–sulfur batteries DOI
Zhengqing Ye, Haobo Sun, Honghao Gao

et al.

Energy storage materials, Journal Year: 2023, Volume and Issue: 60, P. 102855 - 102855

Published: June 1, 2023

Language: Английский

Citations

26
Engineering a deficient-coordinated single-atom indium electrocatalyst for fast redox conversion in practical 500 W h kg−1-level pouch lithium–sulfur batteries DOI
Yang Guo, Zhaoqing Jin, Jianhao Lu

et al.

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(11), P. 5274 - 5283

Published: Jan. 1, 2023

SAIn@CNT with defect coordination enhances the interaction LiPSs and weakens bond energy in LiPSs, which resulted reduction of conversion activation energy. Thus, battery is endowed remarkable electrochemical performance.

Language: Английский

Citations

26