Decoupling the Chemical and Mechanical Strain Effect on Steering the CO2 Activation over CeO2-Based Oxides: An Experimental and DFT Approach DOI Creative Commons
Kyriaki Polychronopoulou, Sara AlKhoori,

Shaima H. Albedwawi

et al.

ACS Applied Materials & Interfaces, Journal Year: 2022, Volume and Issue: 14(29), P. 33094 - 33119

Published: July 12, 2022

Doped ceria-based metal oxides are widely used as supports and stand-alone catalysts in reactions where CO2 is involved. Thus, it important to understand how tailor their adsorption behavior. In this work, steering the activation behavior of Ce–La–Cu–O ternary oxide surfaces through combined effect chemical mechanical strain was thoroughly examined using both experimental ab initio modeling approaches. Doping with aliovalent cations (La3+ or La3+/Cu2+) post-synthetic ball milling were considered origin CeO2, respectively. Experimentally, microwave-assisted reflux-prepared imposed into forces tune structure, redox ability, defects, surface properties; latter key descriptors. The purpose decouple (εC) (εM) on modification reactivity toward activation. During calculations, stability (energy formation, EOvf) different configurations oxygen vacant sites (Ov) assessed under biaxial tensile (ε > 0) compressive < 0), whereas CO2-philicity at levels strain. EOvf values found decrease increasing Ce–La–Cu–O(111) exhibited lowest for single subsurface sites, implying that Ov may occur spontaneously upon Cu addition. mobility bulk anions lattice contributing population measured 16O/18O transient isothermal isotopic exchange experiments; maximum dynamic rate 16O18O Rmax(16O18O), 13.1 8.5 μmol g–1 s–1 pristine (chemically strained) dry ball-milled mechanically oxides, pathway (redox vs associative) experimentally probed situ diffuse reflectance infrared Fourier transform spectroscopy. It demonstrated increased up 6 times though reducing thermal stability. This result actuation "carbonate"-bound species; agreement density functional theory (DFT)-calculated C–O bond lengths O–C–O angles. Ab studies shed light energy (Eads), suggesting a covalent bonding which enhanced presence doping Bader charge analysis adsorbate/surface distribution illustrated interacts dual (acidic basic ones) surface, leading formation bidentate carbonate species. Density states (DOS) revealed significant Eg drop double strain, finding design implications type interactions. To bridge study industrially catalytic applications, Ni-supported prepared evaluated reforming methane reaction. Ball induce metal–support interface Ni catalyst reducibility, thus an increase CH4 conversions. opens new possibilities manipulate portfolio heterogeneous reactions.

Language: Английский

Advances on Defect Engineering of Vanadium‐Based Compounds for High‐Energy Aqueous Zinc–Ion Batteries DOI
Cong Guo,

Shanjun Yi,

Rui Si

et al.

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(40)

Published: Aug. 26, 2022

Abstract Aqueous zinc–ion batteries (ZIBs) have been promptly developed as a competitive and promising system for future large‐scale energy storage. In recent years, vanadium (V)‐based compounds, with diversity of valences high electrochemical‐activity, widely studied cathodes aqueous ZIBs because their rich reserves theoretical capacity. However, the stubborn issues including low conductivity sluggish kinetics, plague smooth application in ZIBs. Among various countermeasures, defect engineering is believed an effective method to alleviate above limitations. This review highlights challenges different V‐based cathode materials (e.g., oxides vanadates) summarizes advances strategies types effects defects, designed strategies, characterization techniques high‐energy Finally, several sound prospects this fervent field are also rationally proposed fundamental research practical application.

Language: Английский

Citations

166
How About Vanadium‐Based Compounds as Cathode Materials for Aqueous Zinc Ion Batteries? DOI Creative Commons
Tingting Lv, Yi Peng, Guangxun Zhang

et al.

Advanced Science, Journal Year: 2023, Volume and Issue: 10(12)

Published: Jan. 22, 2023

Aqueous zinc-ion batteries (AZIBs) stand out among many monovalent/multivalent metal-ion as promising new energy storage devices because of their good safety, low cost, and environmental friendliness. Nevertheless, there are still great challenges to exploring new-type cathode materials that suitable for Zn

Language: Английский

Citations

164
Dual Effects of Metal and Organic Ions Co‐Intercalation Boosting the Kinetics and Stability of Hydrated Vanadate Cathodes for Aqueous Zinc‐Ion Batteries DOI
Quan Zong,

Yanling Zhuang,

Chaofeng Liu

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(31)

Published: June 28, 2023

Abstract For the development of aqueous zinc‐ion batteries, exploiting vanadium‐based cathode materials with quick kinetics and acceptable cycling stability is crucial. Herein, to achieve these goals, transition metal ions (Zn 2+ ) organic (C 5 H 14 ON + Ch are introduced into layered hydrated V 2 O . The intrinsic high conductivity oxygen vacancies generated through ion pre‐intercalation accelerate electrical mobility by optimizing electronic structure. Zn stabilizes structure expanded interlayer spacing improves ionic diffusivity. synergistic effect pre‐intercalated results in 0.1 , )V 4.92 ·0.56H exhibiting a discharge capacity 473 mAh g −1 at A energy efficiency 88% excellent 91% retention after 2000 cycles 4 Ex situ characterizations density functional theory calculations reveal reversible intercalation mechanism improved electrochemical attributed altered reduced binding between host 2−

Language: Английский

Citations

128
Oxygen vacancies and N‐doping in organic–inorganic pre‐intercalated vanadium oxide for high‐performance aqueous zinc‐ion batteries DOI Creative Commons
Feng Zhang, Min Du, Zhenyu Miao

et al.

InfoMat, Journal Year: 2022, Volume and Issue: 4(11)

Published: July 13, 2022

Abstract Pre‐intercalation of metal ions into vanadium oxide is an effective strategy for optimizing the performance rechargeable zinc‐ion battery (ZIB) cathodes. However, long‐lifespan achievement and high‐capacity retention remain a challenge. Increasing electronic conductivity while simultaneously prompting cathode diffusion kinetics can improve ZIB electrochemical performance. Herein, N‐doped (N‐(Zn,en)VO) via defect engineering reported as aqueous ZIBs. Positron annihilation electron paramagnetic resonance clearly indicate oxygen vacancies in material. Density functional theory (DFT) calculations show that N‐doping concurrently increase accelerate zinc ions. Moreover, presence substantially increases storage sites Therefore, N‐(Zn,en)VO exhibits excellent performance, including peak capacity 420.5 mA h g −1 at 0.05 A , high power density more than 10 000 W kg 65.3 Wh long cycle life 5 (4500 cycles without decay). The methodology adopted our study be applied to other cathodic materials their extend practical applications. image

Language: Английский

Citations

112
Low-current-density stability of vanadium-based cathodes for aqueous zinc-ion batteries DOI

Xinyue Dou,

Xuefang Xie, Shuquan Liang

et al.

Science Bulletin, Journal Year: 2024, Volume and Issue: 69(6), P. 833 - 845

Published: Jan. 23, 2024

Language: Английский

Citations

110
Carbon Nitride Pillared Vanadate Via Chemical Pre‐Intercalation Towards High‐Performance Aqueous Zinc‐Ion Batteries DOI

Yue Xu,

Guilan Fan,

Peng Xiao Sun

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(26)

Published: May 3, 2023

Vanadium based compounds are promising cathode materials for aqueous zinc (Zn)-ion batteries (AZIBs) due to their high specific capacity. However, the narrow interlayer spacing, low intrinsic conductivity and vanadium dissolution still restrict further application. Herein, we present an oxygen-deficient vanadate pillared by carbon nitride (C3 N4 ) as AZIBs through a facile self-engaged hydrothermal strategy. Of note, C3 nanosheets can act both nitrogen source pre-intercalation species transform orthorhombic V2 O5 into layered NH4 V4 O10 with expanded spacing. Owing structure abundant oxygen vacancies, Zn2+ ion (de)intercalation kinetics ionic in promoted. As result, delivers exceptional Zn-ion storage ability capacity of about 370 mAh g-1 at 0.5 A , high-rate capability 194.7 20 stable cycling performance 10 000 cycles.

Language: Английский

Citations

87
Defect engineering on VO2(B) nanoleaves/graphene oxide for the high performance of cathodes of zinc-ion batteries with a wide temperature range DOI

Ziyan Yuan,

Fuyu Xiao,

Yixing Fang

et al.

Journal of Power Sources, Journal Year: 2023, Volume and Issue: 559, P. 232688 - 232688

Published: Jan. 20, 2023

Language: Английский

Citations

50
Conductive coating, cation‐intercalation, and oxygen vacancies co‐modified vanadium oxides as high‐rate and stable cathodes for aqueous zinc‐ion batteries DOI Creative Commons

Shandong Tan,

Zhiyuan Sang, Zhehan Yi

et al.

EcoMat, Journal Year: 2023, Volume and Issue: 5(4)

Published: Jan. 27, 2023

Abstract Layered vanadium oxides are promising cathode materials for zinc‐ion batteries (ZIBs) owing to their high capacity, but the sluggish electron/ion migration kinetics and structural collapse/dissolution severely limit Zn 2+ ‐storage performance. Herein, poly(3,4‐ethylenedioxythiophene) coated Mn ‐intercalated with rich oxygen vacancies (MnVOH@PEDOT) prepared as cathodes ZIBs. The PEDOT coating, synergistic vacancies, tailors electron conductivity, ‐intercalation enlarges interlayer spacing rapid ‐ions diffusion. In addition, pre‐intercalated act “pillars” stabilize structure, coating prevents direct contact of electrolyte inhibit its dissolution during cycling. Thus, MnVOH@PEDOT exhibits superior discharge favorable rate capability (336.0 mAh g −1 at 8 A ), satisfying cyclic durability (84.8% capacity retention over 2000 cycles). This work offers a facile design strategy achieving image

Language: Английский

Citations

45
Pre-intercalation strategy in vanadium oxides cathodes for aqueous zinc ion batteries: Review and prospects DOI
Tao Zhou, Guo Gao

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 84, P. 110808 - 110808

Published: Feb. 9, 2024

Language: Английский

Citations

21
Fast interfacial electrocatalytic desolvation enabling low‐temperature and long‐cycle‐life aqueous Zn batteries DOI Creative Commons
Jian Wang,

Hongfei Hu,

Lujie Jia

et al.

InfoMat, Journal Year: 2024, Volume and Issue: 6(7)

Published: May 23, 2024

Abstract Low‐temperature zinc batteries (LT‐ZIBs) based on aqueous electrolytes show great promise for practical applications owing to their natural resource abundance and low cost. However, they suffer from sluggish kinetics with elevated energy barriers due the dissociation of bulky Zn(H 2 O) 6 2+ solvation structure free Zn diffusion, resulting in unsatisfactory lifespan performance. Herein, dissimilar shell tuning or layer spacing enlargement engineering, delocalized electrons cathode through constructing intrinsic defect engineering is proposed achieve a rapid electrocatalytic desolvation obtain insertion/extraction. As revealed by density functional theory calculations interfacial spectroscopic characterizations, electron distribution propels dissociation, forming reversible interphase facilitating diffusion across electrolyte/cathode interface. The as‐fabricated oxygen defect‐rich V O 5 hierarchical porous carbon (ODVO@HPC) electrode exhibits high capacity robustness 25 −20°C. Operating at −20°C, ODVO@HPC delivers 191 mAh g −1 50 A lasts 000 cycles 10 , significantly enhancing power under low‐temperature environments comparison previous reports. Even areal mass loading ~13 mg cm −2 both coin cells pouch maintain excellent stability capacities, realizing high‐performance LT‐ZIBs.

Language: Английский

Citations

20