JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Chen Zhang,Mingjun Chen,Xiaohui Zhao,Wenming Zhang,Zhanyu Li
With its consistent thermal runaway temperature and superior capacity, aluminum ion batteries have emerged as a key area for battery development. At the moment, electrode material is the main focus of aluminum ion battery capacity enhancement. Selenide is anticipated to develop into a high-performance cathode for aluminum ion batteries, since it is a type of high energy density electrode material. However, because selenide is soluble in acid electrolytes, Al-Se batteries have low cycle performance and cannot keep up with the present demand for electronic gadgets. Here, homogeneous-structured precursors were created via a hydrothermal reaction , and MnSe 2 –MnSe heterojunction hollow spheres were created a step further via temperature control of the selenidation reaction. With 103.76 mAh/g of specific capacity remaining after 3000 cycles at 1.0 A/g, this novel heterojunction material exhibits astounding cycle stability. After additional investigation, it was shown that the MnSe 2 –MnSe heterojunction may prevent the dispersion of the active substances, significantly enhancing the cycle performance. The density of states (DOS) of electrode materials demonstrates the superior electronic conductivity of this heterojunction material. Meanwhile, it was computationally demonstrated that the MnSe 2 –MnSe heterojunction has a strong adsorption energy for AlCl 4 − , thus accelerating the reaction kinetics. In summary, the performance of selenides has been improved by this novel heterojunction material, which also makes for a superior cathode material .
研究领域:
电化学
·
材料科学
·
能源存储
·
纳米材料
·
固态化学
·
电极材料
✓ 已验证
DOI
高影响因子
SURFACE REVIEW AND LETTERS
·
2017
·
IF 0.491
FEI LI,JINGDE ZHANG,JUNPENG LUAN,YALEI LIU,JIANXUN HAN
The NiO/YSZ anode materials of SOFCs with Bi 2 O 3 as sintering aids were successfully prepared by dry-pressing process. The effects of Bi 2 O 3 content on the sintering properties of NiO/YSZ anode materials were studied, including the effects on the density, open porosity, weight loss, phase composition, microstructure, mechanical strength and electrical conductivity. In particular, the weight loss, relative density and bending strength of the sintered NiO/YSZ ceramics increased with the increase of Bi 2 O 3 content while the open porosity decreased gradually. The density of the NiO–YSZ ceramics with 6 wt.% Bi 2 O 3 sintered at 1250 ∘ C could reach that of the ceramics without Bi 2 O 3 sintered at 1400 ∘ C. For Bi 2 O 3 concentration higher than 6 wt.%, phase transformation of zirconia from monoclinic to cubic structure occurs, causing volume change and microcracks in the anode materials. Therefore, the optimum adding amount of Bi 2 O 3 is 6 wt.%, which can reduce the sintering temperature to 1250 ∘ C. The ceramics with 6 wt.% Bi 2 O 3 have relatively high bending strength and low sintering temperature. This is of great significance for improving the performance of the anode and cutting the cost.
研究领域:
材料科学
·
能源工程
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2018
·
IF 4.229
Xiubing Huang,Jie Feng,Hassan R.S. Abdellatif,Jing Zou,Guan Zhang,Chengsheng Ni
Mn-substituted double perovskites , PrBaCo 2-x Mn x O 5+δ (x = 0, 0.5, 1), are evaluated as cathode materials for intermediate-temperature solid oxide fuel cells. The effects of Mn substitution content on their structural and electrochemical properties including crystal structure, thermal expansion coefficient , and cathodic interfacial polarization resistance are investigated. The PrBaCo 2-x Mn x O 5+δ samples exhibit structural changes with increasing Mn contents from tetragonal (x = 0) to cubic (x = 0.5 and 1.0) symmetry. The thermal expansion coefficient decreases with the increasing Mn content while the cathodic performance increases with the increment of Mn content from x = 0 to x = 0.5 then decreases with the further increment of Mn content from x = 0.5 to x = 1.0. When using La 0.8 Sr 0.2 Ga 0.8 Mg 0.15 Co 0.05 O 3 with 300 μm thickness as electrolyte and Sr 2 Fe 1.4 Ni 0.1 Mo 0.5 O 6-δ as anode, the maximum powder density of the x = 0.5 composite is 0.638 W cm −2 , which is higher than that of the other two samples with x = 0 (0.474 W cm −2 ) and x = 1.0 (0.371 W cm −2 ) at 800 °C.
研究领域:
材料科学
·
能源工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2015
·
IF 2.288
Qingjun Zhou,Ye Cheng,Weidong Li,Xin Yang,Jincheng Liu,Dongmin An,Xiaoqiang Tong,Binchao Zhong,Weibo Wang
The performance of Sr 2 FeTi 0.75 Mo 0.25 O 6− δ (SFTM) as a potential cathode material has been investigated in this study. The SFTM material with a cubic perovskite structure, has a good chemical compatibility with the Ce 0.8 Sm 0.2 O 1.9 (SDC) electrolyte at 1100 °C for 10 h. The electrical conductivity of the SFTM sample reaches a maximum value of 2.31 S cm −1 at 500 °C. SFTM shows an average thermal expansion coefficient (TEC) of 13.6 × 10 −6 K −1 in the temperature range of 30–1000 °C in air, which is close to that of the typical electrolyte material. The polarization resistance ( R p ) of a SFTM cathode on a SDC electrolyte reaches a value of 0.14 Ω cm 2 at 800 °C. Peak power density of a single-cell with the SFTM cathode on a 300 μm-thick SDC electrolyte reaches 394 mW cm −2 at 800 °C. These results indicate that SFTM is a potential cathode material for solid oxide fuel cells.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Yueyue He,Wei Xiang,Genpin Lv,YanJun Zhong,Yang Song,Kun Zhou,Zhenguo Wu,Jun Zhang,Erqiang Yang,Xiaodong Guo
The recent discovery of fast Li-ion transport networks in Li-rich disordered rock-salt (DRX) cathodes expands vastly composition space of high-energy–density cathode materials. Despite numerous Nb, Mo and W based DRX materials have been reported, high energy density DRX materials with composition of inexpensive, eco-friendly and earth abundant elements still urgently need to be developed. Herein, a promising set of Ti based oxyfluorides Li 2 Ti 1/3 Ni 1/3 M 1/3 O 2 F (M = Mn, Fe), which contain high voltage Ni 2+ /Ni 4+ redox couple and low-cost redox couple with Fe and Mn were successfully synthesized. Benefited from the stable Ni 2+ / 4+ and Mn 3+ / 4+ redox and moderated anion redox, Li 2 Ti 1/3 Ni 1/3 Mn 1/3 O 2 F oxyfluoride exhibits high discharge capacities of 285.3 mAh g −1 and energy content of 909.5 Wh kg −1 as well as relatively stable cyclability. Especially, high discharge capacity of 215 mAh g −1 above 3 V acquired by coordination utilization of cation and anion redox for Li 2 Ti 1/3 Ni 1/3 Mn 1/3 O 2 F endows the oxyfluoride with high energy quality, showing enormous potential for practical utilization in the future. For Li 2 Ti 1/3 Ni 1/3 Fe 1/3 O 2 F, the poor reversibility of Ni 2+ /Ni 4+ redox and much higher oxygen charge redox are the main reasons for the much worse capacity retention, and the activation of Fe 2+ /Fe 3+ redox at low voltage partially contributes to the decreased discharge voltage. Density-functional theory calculation reveals that localized oxygen 2p orbital of Li 2 Ti 1/3 Ni 1/3 Fe 1/3 O 2 F is closer to the Fermi level than that of Li 2 Ti 1/3 Ni 1/3 Mn 1/3 O 2 F, which would ultimately lead to much higher content of oxygen redox and relatively lower capacity retention. The synergistic utilization of multiple cation redox reservoirs which consist of high voltage redox couple and low-cost redox couple, and small quantity of O redox centers to construct high energy quality DRX materials would provide new reference for developing other cathodes.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yawen Wang,Xinyue Zhang,Mengyu Yang,Shilun Fu,Qingjun Zhou
High entropy solid oxide fuel cell (SOFC) cathode materials with a double perovskite structure have attracted considerable attention due to their unique multi-component design and the complex interactions among constituent elements, which endow them with exceptional catalytic performance. We report a double perovskite cathode material, La 0.2 Pr 0.2 Nd 0.2 Sm 0.2 Gd 0.2 BaCo 0.7 Fe 0.7 Ni 0.4 Cu 0.1 Zn 0.1 O 5+δ (LPNSGBCFNCZ), featuring a high-entropy design at the A-site and a medium-entropy design at the B-site, and systematically investigate its structure, electrochemical performance and CO 2 tolerance. The results demonstrate that LPNSGBCFNCZ exhibits excellent redox activity, with an area-specific resistance of only 0.07 Ω·cm 2 at 800 ℃. Furthermore, compared with the non-entropically designed PrBaCo 2 O 5+δ , LPNSGBCFNCZ exhibits superior thermal expansion properties and significantly enhanced tolerance to CO 2 . This performance improvement is attributed to the dual-entropy design of the A and B-sites: the high entropy at the A-site effectively suppresses the formation of BaCO 3 in CO 2 atmospheres, while the medium entropy at the B-site reduces the thermal expansion coefficient by lowering the Co content. This study indicates that LPNSGBCFNCZ is a highly promising SOFC cathode material, further validating the feasibility and effectiveness of the high-entropy strategy in the development of SOFC electrode materials.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Haocong Wang,Wanfeng Zhu,Lanlan Xu,Jian Gong,Wenjia Li,Xiaojuan Liu
The high performance of intermediate-to-low temperature solid oxide fuel cells (ILT-SOFCs) closely depends on the catalytic activity of the cathode material. However, most high-activity perovskite cathodes are rich in Sr and will arise from Sr segregation during the long-term working, resulting in the decay of activity and stability. Herein, by regulating the calcined way and temperature, a type of self-assembled nanocomposite perovskite cathode is developed, the stoichiometric SrCo0.7Fe0.2Sc0.1O3−δ (SCFSc) powder self-separates into a cubic phase (Pm3̅m, Sc-rich) and a tetragonal phase (P4/mmm, Sc-fewer). Meanwhile, a single cubic phase is prepared with the same formula via calcining the SCFSc pellet. It is found that the nanocomposite cathode shows better oxygen reduction reaction catalytic activity than single cubic SCFSc, caused by lower impedance of oxygen surface exchange and bulk diffusion. Particularly, the nanocomposite SCFSc cathode with the self-assembled heterointerfaces mitigates the Sr segregation and shows a peak power density of 1.17 W cm–2 at 700 °C and excellent stability for ∼101 h at 600 °C. This work provides a strategy for the development of nanocomposite cathodes to mitigate cation segregation and improve catalytic activity and stability.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Yuwen Zhu,Shihang Guo,Jianqiu Zhu,Peng Du,Jie Pu,Linjuan Zhang,Donglin Han
Protonic ceramic fuel cells (PCFCs) are a promising hydrogen economy-oriented technique for energy conversion, but the performance of cathodes needs to be improved due to the sluggish oxygen reduction reaction kinetics. Post-annealing the AgNO 3 solution-infiltrated La 2 NiO 4+δ (LNO) backbones leads to the formation of Ag nanoparticles-decorated LNO composite cathodes, with the oxygen adsorption ability enhanced significantly at the interface between Ag and LNO. Although the acidity of the AgNO 3 solution results in a negative etching effect, it is compensated or even overcome by the enhanced catalytic activity by generating Ag nanoparticles on the surface of LNO. Notably, LNO loaded with 1 wt% Ag achieves the optimal balance, showing the lowest polarization resistance of 0.25 Ωcm 2 at 650 °C, more than five times lower than 1.28 Ωcm 2 for the bare LNO.
研究领域:
材料科学
·
电化学
·
能源材料
·
固体氧化物电化学
·
纳米催化
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Xuezhen Zhai,Xiaohong Chen,Ruihan Li,Lamei Zhang,Xuzhe Wang,Cui Shang,Chengzhou Zhao,Huawei Zhang,Jimin Shang,Dewei Liu
VO 2 (B) has emerged as a promising cathode candidate for aqueous zinc-ion batteries (ZIBs) due to its unique tunnel-structured framework that facilitates zinc ion transport. Nevertheless, practical implementation faces challenges including limited coulombic efficiency, inadequate cycling stability, and restricted rate capability, primarily attributed to poor electrical conductivity and strong Zn 2+ interionic repulsion. In this work, Al 3+ is selectively incorporated into VO 2 (B) and induced structural optimization in Al x V 1- x O 2 (B), where controlled lattice contraction and electronic structure modification near the Fermi level. Aluminum doping induces 3D morphology that enhances ion diffusion pathways and electrolyte interaction. The engineered material exhibits enhanced electrochemical kinetics through oxygen vacancy formation (providing active sites) and substantially improved pseudo-capacitive charge storage. The optimized Al 0.05 V 0.95 O 2 (B) cathode achieves a remarkable specific capacity of 364.7 mA·h·g −1 at 0.1 A/g, while maintaining 91.64 % capacity retention after 2000 cycles under high-current operation (5.0 A/g), demonstrating superior electrochemical stability.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
纳米材料
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2016
·Vol. 4
·期 25
·10008-10013
·
IF 8.262
Jin-ling Ma,Xin-bo Zhang
Development of an efficient air cathode for metal–air batteries composed of an element that is abundant on earth is a scientific and technical challenge. Here, nitrogen (N)-doped carbon cathodes were prepared using two conventional doping methods, namely ammonia activation (ammoxidation) and introduction of an N-containing precursor. Interestingly, the introduction of N-containing precursors to prepare the N-doped carbon material not only gave a different pore distribution with increased surface area but also maintained considerable N content, unlike the use of the ammoxidation method – thus greatly enhancing the catalytic activity (low overpotential) and improving the discharge capacity (6905 mA h g−1) and cycle life (from 8 to 66 cycles) in sodium–oxygen batteries compared with the pure carbon material. This study also stresses the importance of adopting the optimized synthesis method to prepare the N-doped carbon cathode.
研究领域:
电化学
·
能源材料
·
纳米材料
·
电池技术
·
多孔材料科学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Jinglian Zhu,Rui Shi,Yana Liu,Yunfeng Zhu,Jiguang Zhang,Xiaohui Hu,Liquan Li
3D interwoven Ti 3 C 2 MXene networks fabricated with the assistance of bacterial celluloses (BC) are used as a cathode material for rechargeable magnesium ion battery, which delivers an impressive specific capacity (171 mA h g −1 at 50 mA g −1 ) and good cycling performance (88% capacity retention after 100 cycles). In contrast, pure Ti 3 C 2 film only shows a reversible capacity of less than 10 mA h g −1 at 50 mA g −1 . Compared to pure Ti 3 C 2 film (d = 1.4 nm), 3D interwoven Ti 3 C 2 MXene networks (BC/Ti 3 C 2 film) possess larger interlayer spacing (d = 1.8 nm), benefiting the magnesium migration, which is proved through DFT calculation. BC/Ti 3 C 2 film with porous surface is observed through FESEM image. While for Ti 3 C 2 film, all flakes stack together. As expected, the diffusion paths for magnesium ions are optimized in the BC/Ti 3 C 2 film. Besides, Galvanostatic Intermittent Titration Technique shows a much larger magnesium diffusion coefficient of BC/Ti 3 C 2 film than that of pure Ti 3 C 2 film. Therefore, the larger interlayer spacing, optimized diffusion paths and larger magnesium diffusion coefficient contribute to the high electrochemical performance. Moreover, the working mechanisms of magnesium ion battery equipped with BC/Ti 3 C 2 film are investigated. This work provides a new insight to design MXene-based cathode materials with high-performance.
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源存储
·
无机非金属材料
✓ 已验证
DOI
高影响因子
Energy Storage Materials
·
2024
·
IF 18.9
Ledi Chen,Zaka Ullah,Houliang Sun,Shiwei Yu,Wanting Li,Mingliang Chen,Liwei Liu,Qi Li
Integration of photoactive and lithium storing units into a single cathode endows it with notable capacity in the presence of suitable light. However, the interfacial effect between the two materials causes significant loss of photogenerated electrons during their transfer which is one of the biggest obstacles in the development of current photo-assisted rechargeable batteries. In this paper, a bifunctional cobalt-coordinated organic cathode is fabricated by combining 2,2′-bpy and DHBQ via Co by adopting the spin evaporation technique. It optimizes the pristine interfaces of photoactive and lithium storage units into a photoactive unit-metal interface and a metal-lithium storage unit interface through application of Co. In the presence of light, Co causes a strong metal-ligand charge transfer. Meanwhile, ligand-ligand charge transfer also takes place between the multi-ligands. The synergistic effect of these two phenomena offers a discharge capacity of 387 mAh g -1 which is significantly higher than that of 316 mAh g -1 recorded in the absence of light. The demonstrated design of bifunctional metal-ligand cathode by incorporation of photoactive ligands into lithium storage ligands through applications of metal centers can open the pathways for establishing a new type of photo-assisted lithium-ion batteries with higher efficiency and lower cost.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）