Synergistically Accelerating Adsorption‐Electrocataysis of Sulfur Species via Interfacial Built‐In Electric Field of SnS2‐MXene Mott–Schottky Heterojunction in Li‐S Batteries DOI
Li Chen,

Liguo Yue,

Xinying Wang

et al.

Small, Journal Year: 2023, Volume and Issue: 19(15)

Published: Jan. 15, 2023

Developing efficient heterojunction electrocatalysts and uncovering their atomic-level interfacial mechanism in promoting sulfur-species adsorption-electrocatalysis are interesting yet challenging lithium-sulfur batteries (LSBs). Here, multifunctional SnS2 -MXene Mott-Schottky heterojunctions with built-in electric field (BIEF) developed, as a model to decipher BIEF effect for accelerating synergistic of bidirectional sulfur conversion. Theoretical experimental analysis confirm that because Ti atoms MXene easily lost electrons, whereas S gain under influence, forms the spontaneous BIEF, leading electronic flow from , so surface bonds more lithium polysulfides. Moreover, hetero-interface quickly propels abundant Li+ /electron transfer, greatly lowering Li2 nucleation/decomposition barrier, Therefore, S/SnS2 cathode displays high reversible capacity (1,188.5 mAh g-1 at 0.2 C) stable long-life span 500 cycles (≈82.7% retention 1.0 C). Importantly, thick (sulfur loading: 8.0 mg cm-2 ) presents large areal 7.35 lean electrolyte 5.0 µL mgs-1 . This work verifies substantive how optimizes catalytic performance provides an effective strategy deigning Li-S catalysts LSBs.

Language: Английский

NiS/MoS2 Mott-Schottky heterojunction-induced local charge redistribution for high-efficiency urea-assisted energy-saving hydrogen production DOI

Chengjun Gu,

Guangyao Zhou, Jun Yang

et al.

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 443, P. 136321 - 136321

Published: April 11, 2022

Language: Английский

Citations

99
Recent advances in modified commercial separators for lithium–sulfur batteries DOI
Andrew Kim,

Seok Hyeon Oh,

Arindam Adhikari

et al.

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(15), P. 7833 - 7866

Published: Jan. 1, 2023

Lithium–sulfur batteries (LSBs) are one of the most promising next-generation because they have higher theoretical capacities, lower cost, and smaller environmental impact than lithium-ion (LIBs).

Language: Английский

Citations

97
Nanoreactors Encapsulating Built‐in Electric Field as a “Bridge” for Li–S Batteries: Directional Migration and Rapid Conversion of Polysulfides DOI
Junhao Li, Zhengyi Wang, Kaixiang Shi

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 14(9)

Published: Dec. 27, 2023

Abstract Lithium–sulfur batteries (Li–S) are recognized as the next generation of secondary due to their satisfactory theoretical specific capacity and energy density. However, a series problems such disordered migration behavior, sluggish redox kinetics, serious shuttle effect lithium polysulfides (LiPSs) greatly limit commercial application. Herein, nanoreactors encapsulate heterostructure guarantee sulfur conversion in hosts where consists FeP with moderate adsorption ability, excellent catalytic active low work function, Fe 3 O 4 strong ability high function. This rational configuration controls direction interface built‐in electric field (BIEF) between catalyst adsorbent, realizing successive “trapping‐directional migration‐conversion” reaction mechanism species. Thanks BIEF bridge connect trapping site site, /FeP@C─S cathode delivers an ultrahigh initial 1402 mAh g −1 at 0.1 C remains more than 450 5 after 350 cycles. Even loading 5.20 mg cm −2 , it displayed 970 . provided effective strategy design high‐performance electrocatalysts for Li–S batteries.

Language: Английский

Citations

95
Engineering Cooperative Catalysis in Li–S Batteries DOI

Jinlei Qin,

Rui Wang,

Pei Xiao

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(26)

Published: June 6, 2023

Abstract Lithium–sulfur (Li–S) batteries are regarded to be one of the most promising next‐generation owing merits high theoretical capacity and low cost. However, aprotic S electrochemistry is hampered by shuttling effect sluggish conversion soluble lithium polysulfides (LiPSs). Various electrocatalysts have been designed optimize kinetics LiPSs. Heteroatom doping or polar catalyst incorporation plays an important role remedy these shortcomings. Here, cooperative catalytic effects engendered heteroatom codoping engineering, catalyst/heteroatom composite strategy, integrating polar‐metal‐based material design summarized. First, principles on conductive interface described in detail. Moreover, a systematic investigation electrocatalytic characterization techniques that establish bridge between solid–liquid macroscopic electrochemical performance highlighted, providing more scientific guidance for design. In conclusion, stemming from current achievements, future directions targeting high‐energy‐density Li–S commercialization proposed.

Language: Английский

Citations

94
Boosting Lean Electrolyte Lithium–Sulfur Battery Performance with Transition Metals: A Comprehensive Review DOI Creative Commons
Hui Pan, Zhibin Cheng, Zhenyu Zhou

et al.

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: June 29, 2023

Lithium-sulfur (Li-S) batteries have received widespread attention, and lean electrolyte Li-S attracted additional interest because of their higher energy densities. This review systematically analyzes the effect electrolyte-to-sulfur (E/S) ratios on battery density challenges for sulfur reduction reactions (SRR) under conditions. Accordingly, we use various polar transition metal hosts as corresponding solutions to facilitate SRR kinetics at low E/S (< 10 µL mg-1), strengths limitations different compounds are presented discussed from a fundamental perspective. Subsequently, three promising strategies that act anchors catalysts proposed boost performance. Finally, an outlook is provided guide future research high batteries.

Language: Английский

Citations

92
Unraveling Polysulfide's Adsorption and Electrocatalytic Conversion on Metal Oxides for Li‐S Batteries DOI Creative Commons

Shungui Deng,

Tiezhu Guo, Jakob Heier

et al.

Advanced Science, Journal Year: 2022, Volume and Issue: 10(5)

Published: Dec. 11, 2022

Abstract Lithium sulfur (LiS) batteries possess high theoretical capacity and energy density, holding great promise for next generation electronics electrical vehicles. However, the LiS development is hindered by shuttle effect sluggish conversion kinetics of lithium polysulfides (LiPSs). Designing highly polar materials such as metal oxides (MOs) with moderate adsorption effective catalytic activity essential to overcome above issues. To design efficient MOs catalysts, it critical necessary understand mechanism associated processes LiPSs. most reviews still lack a comprehensive investigation basic always ignore their in‐depth relationship. In this review, systematic analysis toward understanding underlying in chemistry well discussion typical works concerning electrocatalysts are provided. Moreover, improve “adsorption‐diffusion‐conversion” process caused low conductive nature MOs, oxygen vacancies heterostructure engineering elucidated two strategies. The challenges prospects also provided last section. authors hope review will provide instructive guidance catalyst explore practical possibilities commercialization batteries.

Language: Английский

Citations

88
Phase Engineering of Defective Copper Selenide toward Robust Lithium–Sulfur Batteries DOI
Dawei Yang, Mengyao Li,

Xuejiao Zheng

et al.

ACS Nano, Journal Year: 2022, Volume and Issue: 16(7), P. 11102 - 11114

Published: June 27, 2022

The shuttling of soluble lithium polysulfides (LiPS) and the sluggish Li-S conversion kinetics are two main barriers toward practical application lithium-sulfur batteries (LSBs). Herein, we propose addition copper selenide nanoparticles at cathode to trap LiPS accelerate reaction kinetics. Using both computational experimental results, demonstrate crystal phase concentration vacancies control electronic structure selenide, its affinity chemisorption, electrical conductivity. adjustment defect density also allows for tuning electrochemically active sites catalytic polysulfide. optimized S/Cu1.8Se efficiently promotes stabilizes sulfur electrochemistry, thus improving significantly LSB performance, including an outstanding cyclability over 1000 cycles 3 C with a capacity fading rate just 0.029% per cycle, superb capability up 5 C, high areal 6.07 mAh cm-2 under loading. Overall, present work proposes engineering strategy fast durable demonstrating great potential in developing LSBs.

Language: Английский

Citations

86
Interface engineering toward stable lithium–sulfur batteries DOI

Yi Guo,

Qian Niu, Fei Pei

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(4), P. 1330 - 1367

Published: Jan. 1, 2024

The interfaces, interfacial issues, and their impact on lithium–sulfur electrochemistry are overviewed for both coin cells practical batteries.

Language: Английский

Citations

82
ZnFe2O4–Ni5P4 Mott–Schottky Heterojunctions to Promote Kinetics for Advanced Li–S Batteries DOI
Dan Zhang, Yixin Luo, Jiaxiang Liu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2022, Volume and Issue: 14(20), P. 23546 - 23557

Published: May 17, 2022

The practical progress of lithium–sulfur batteries is hindered by the serious shuttle effect and slow oxidation–reduction kinetics polysulfides. Herein, ZnFe2O4–Ni5P4 Mott–Schottky heterojunction material prepared to address these issues. Benefitting from a self-generated built-in electric field, as an efficient bidirectional catalysis regulates charge distribution at interface accelerates electron transfer. Meanwhile, synergy strong adsorption capacity derived metal oxides outstanding catalytic performance that comes phosphides strengthens polysulfides, reduces energy barrier during reaction, conversion between sulfur species, further reaction kinetics. Hence, cell with ZnFe2O4–Ni5P4/S harvests high discharge 1132.4 mAh g–1 0.5C displays Coulombic efficiency 99.3% after 700 cycles. battery still maintains 610.1 84.4% retention 150 cycles 0.1C under loading 3.2 mg cm–2. This work provides favorable reference advanced guidance for developing heterojunctions in batteries.

Language: Английский

Citations

81
Binary Metal Single Atom Electrocatalysts with Synergistic Catalytic Activity toward High‐Rate and High Areal‐Capacity Lithium–Sulfur Batteries DOI
Lianbo Ma, Ji Qian, Yongtao Li

et al.

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(51)

Published: Oct. 10, 2022

Abstract Lithium–sulfur (Li–S) batteries with high theoretical energy density have been long considered as an alternative storage device to lithium‐ion batteries. Nevertheless, the polysulfide shuttle effects trigger fast capacity decay and short battery lifespan, severely hampering their practical utilizations. Herein, efficient electrocatalyst comprising of nitrogen (N)‐coordinated binary metal single atoms (SAs) implanted within a hierarchical porous carbon skeleton (Fe/CoNHPC) is constructed trap catalyze polysulfides conversion through separator coating strategy. It demonstrated that introduction Co atom can enrich electron number Fe active center, thereby realizing distinct synergistic catalytic effect SAs improving bidirectional catalysis Li–S redox reaction. As result, Fe/CoNHPC‐modified exhibit outstanding rate capability (740 mAh g −1 at 5.0 C), superior long‐term cyclic stability (694 after 600 cycles 1.0 C). Increasing sulfur loading 4.8 mg cm −2 , remarkable areal 6.13 achieved. Furthermore, in situ X‐ray diffraction simulation results verify mechanism by changing rate‐determining steps, providing new directions for constructing high‐performance

Language: Английский

Citations

79