JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Yajuan Zhang,Jinliang Li,Haibo Li,Huancong Shi,Zhiwei Gong,Ting Lu,Likun Pan
Metal sulfides are recognized as potential candidates for the anode materials of lithium ion batteries (LIBs) because of their high theoretical capacity. However, the low reaction kinetics of metal sulfides leads to their poor cycle life and rate performance, which limits their practical application in the field of energy storage. In this work, we synthesized a self-assembled carbon-free vanadium sulfide (V 3 S 4 ) nanosheet via a facile and efficient method. The unique mesoporous nanostructure of V 3 S 4 can not only accelerate the migration of ions/electrons, but also alleviate the volume expansion during the lithium ion insertion/extraction process. When used as the anode material of LIBs, the carbon-free V 3 S 4 electrode exhibits remarkable electrochemical performance with ultra-high charge capacity (1099.3 mAh g −1 at 0.1 A g −1 ), superior rate capability (668.8 mAh g −1 at 2 A g −1 and 588.8 mAh g −1 at 5 A g −1 ) and impressive cycling ability (369.6 mAh g −1 after 200 cycles at 10 A g -1 ), which is very competitive compared with those of most metal sulfides-based anode materials reported so far. The strategy in this work provides inspiration for the rational design of advanced nanostructured electrode materials for energy storage devices.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Yuyao Chen,Guoyu Qian,Jijun Lu,Sheng Pang,Yiwei Sun,Hao Wang,Hongbing Peng,Zhi Wang
Cermet is a promising inert anode material to solve the problem of high carbon emission and bearing C-F harmful gas generation of primary aluminum produced from bauxite using molten electrolysis with carbon anode. However, a major challenge for traditional methods is to ensure that the cermet inert anode simultaneously has good conductivity, corrosion resistance , and strength . Herein, a new ultrafast pressureless sintering (UPS) method is developed to greatly improve the conductivity of metal ceramic inert anode materials while ensuring good corrosion resistance and strength. In a departure from conventional practice that metal phase undergoes local enrichment accompanied by irregular formation of ceramic particles at low heating rates, here UPS achieves rapid diffusion and uniform distribution of metal phase at regular ceramic particle interfaces during liquid phase sintering . The new method is applicable to Ni-based cermet and the production of Ni-based cermet inert anode with excellent conductivity in a few tens of seconds has been demonstrated, which is able to improve the quality of cermet inert anode requiring a low energy input. The conductivity of cermet produced by the applied UPS process is 15-fold higher than that of other pressureless sintering processes with low heating rates. These Ni-cermet inert anodes exhibit high corrosion resistance and density with excellent mechanical properties. This rapid sintering technique facilitates the structural design of inert anodes and develops a pathway of new systems with scalable, efficient, and high-quality sintering of composite materials.
研究领域:
材料科学
·
冶金工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Fen Guo,Yiju Li,Baoan Fan,Yi Liu,Lilin Lu,Yang Lei
To achieve high electrochemical surface area (ECSA) and avoid carbon support and binder in the anode catalyst of direct ethanol fuel cell, herein, we design freestanding core–shell nickel@palladium–nickel nanowire arrays (Ni@Pd–Ni NAs) without carbon support and binder for high-efficiency ethanol electro-oxidation. Bare Ni nanowire arrays (Ni NAs) are first prepared using the facile template-assistant electrodeposition method. Subsequently, the Ni@Pd–Ni NAs are formed using one-step solution-based alloying reaction. The optimized Ni@Pd–Ni NA electrode with a high ECSA of 64.4 m2 g–1Pd exhibits excellent electrochemical performance (peak current density: 622 A g–1Pd) and cycling stability for ethanol electro-oxidation. The facilely obtained yet high-efficiency core–shell Ni@Pd–Ni NA electrode is a promising electrocatalyst, which can be utilized for oxygen reduction reaction, urea, hydrazine hydrate, and hydrogen peroxide electro-oxidation, not limited to the ethanol electro-oxidation.
研究领域:
材料科学
·
电化学
·
能源转换与存储
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Electronic Materials
·
2021
·
IF 3.314
Kai Li,Jie-Yin Zhang,Shannan Chang,Hao Wei,Jian-Jun Zhang,Yaping Dan
Self-assembled molecular monolayer doping may find important applications in doping FinFET and nanowire transistors due to its nature of being conformal, nondestructive, and self-limiting. However, carbon contamination from the dopant carrier molecules is often introduced into silicon, which will affect the device performance. Herein, we use carbon-free phosphorus chloride (PCl3) molecules as dopant carrier molecules to avoid the introduction of carbon contamination. The Hall effect measurements and secondary ion mass spectrometry show that the dopant activation rate is close to full activation even for samples with a low doping concentration.
研究领域:
材料科学
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半导体物理
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Hui Wang,Houzhen Chen,Hongjiao Wang,Lei Wu,Qixing Wu,Zhongkuan Luo,Fang Wang
The electrochemical performance of the lithium−oxygen (Li−O 2 ) batteries largely depends on the material and architecture of the catalytic cathode. In this paper, to avoid the parasitic reactions of carbon and binder with discharge products and reaction intermediates, we proposed an effective design of a free-standing catalytic cathode for Li−O 2 batteries. The FeCo 2 O 4 @Ni electrode consists of FeCo 2 O 4 nanosheets grown directly on nickel (Ni) foam. The resultant hierarchical macroporous/mesoporous structure provides sufficient space for the insoluble discharge product Li 2 O 2 and catalytically active sites for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Consequently, the carbon- and binder-free self-supporting electrode has demonstrated a high discharge capacity with relatively low charge overvoltage and a better cycle performance than the corresponding carbon-based electrodes.
研究领域:
电化学
·
能源材料
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纳米材料
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电催化
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储能技术
✓ 已验证
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2025
·Vol. 31
·期 27
·e202500589
·
IF 3.7
Jinhua Zhou,Tao Ji,Shengyang Xu,Xiong Wang,Juntao Wang,Yating Tang,Yuhong Li,Wenyu Yin,Hongmei Ji,Shaojun Shi,Gang Yang
The development of hierarchical heterostructured materials for sodium-ion batteries (SIBs) remains hindered by suboptimal high-rate cycling performance, primarily due to phase interface pulverization and separation during charge–discharge processes. To address these challenges, we designed a carbon-free hierarchical structure comprising few-layered MoS₂ nanosheets and MoO₂ nanocrystals through precise compositional optimization and rational structural engineering. The heterogeneous components are interconnected through robust S─O covalent bonds, which theoretical calculations and experimental results confirm generate a built-in electric field at the heterointerfaces, significantly enhancing reaction kinetics. Crucially, these covalent bonds stabilize the heterointerfaces, improving structural integrity and mitigating electrode material agglomeration and pulverization. Additionally, the MoS₂/MoO₂ heterostructure enhances Na⁺ adsorption energetics and reduces Na⁺ diffusion barriers, facilitating efficient ion transport. Leveraging its abundant heterointerfaces and stable architecture, the composite delivers exceptional rate performance (432.7 mAh·g⁻¹ at 10 A·g⁻¹) and outstanding cycling stability (nearly 100% capacity retention over 400 cycles at 5 A·g⁻¹). This work provides a strategic framework for designing heterostructured materials with stable interface-rich architectures, advancing the development of high-performance conversion/alloy-type anodes for energy storage applications. Graphical The study designs a carbon-free MoS 2 /MoO 2 heterostructure with abundant heterointerfaces and strong chemical bonding. The formed S─O bonds generate an internal built-in electric field, endowing the heterostructure with metallic conductivity and high Na + adsorption energy. The rational structural design ensures fast reaction kinetics and a stable heterointerface, enabling superior high-rate Na + -ion storage performance.
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产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Yiping He,Tangli Chen,Yuelin Zhang,Yule Shi,Liang Yu,Yurui Hao,Yuchen Tan,Qinyu Shi,Zihao Cai,Hao Liu,Chengshan Xu,Nao Kobayashi,Yue Qiu,Gaolong Zhu,Shigeaki Yamazaki,Junxian Hou,Xuning Feng,Languang Lu,Terada Junpei,Minggao Ouyang
High-nickel lithium-ion batteries are known for their high energy density, but face severe safety challenges. The initial heat and gas accumulation originate from the highly reductive lithiated anode at the anode-electrolyte interface within the cell, which finally triggers the intensive exothermic reactions. Herein, an ethylene carbonate-less (EC-less) electrolyte endowed with a bianionic coordination solvation structure is designed, which significantly enhances the thermal stability of LiNi0.8Co0.1Mn0.1O2|graphite (NCM811|Gr) pouch cells by mediating anode-electrolyte interfacial reactions. This bianionic structured EC-less electrolyte demonstrates superior reductive stability against the highly reactive lithiated anode, as evidenced by its elevated lowest unoccupied molecular orbital (LUMO) energy level. Material-level thermal analysis confirms that EC-less electrolyte markedly manipulates the electrolyte reduction reactions, achieving a 29.7% reduction in heat release (−225.5 J g −1 ) relative to conventional electrolyte (−320.8 J g −1 ). Further validation using 1 Ah NCM811|Gr pouch cells demonstrates that EC-less electrolyte enables the cell to maintain thermal inertness at 180 °C for 40 min, whereas a conventional cell experiences intensive thermal runaway at 160 °C. Furthermore, EC-less electrolyte facilitates the formation of an inorganic-rich interphase, and the pouch cell exhibits excellent electrochemical performance. This research highlights the potential of interfacial reaction engineering for safer high-nickel lithium batteries.
研究领域:
储能
·
电化学
·
材料科学
·
电池技术
✓ 已验证
DOI
高影响因子
IONICS
·
2018
·Vol. 25
·期 4
·1669-1677
·
IF 2.347
Yuan Jiashu,Liu Zhihao,Wen Yandi,Hu Huili,Zhu Yongming,Thangadurai Venkataraman
Li–oxygen battery provides much higher specific energy density compared to conventional Li–ion batteries, but there is a lack of desired cathodes which show lower over-potential during the charging cycle. Here, we report the effect of surface morphology of carbon-free spinel-like NiCo 2 O 4 nanowires and nanosheets on Ni foam on cathode performance in Li–O 2 battery. Two hierarchical structured NiCo 2 O 4 cathodes were synthesized by using a hydrothermal method. Physical, chemical, and electrochemical properties of NiCo 2 O 4 were characterized using powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, BET surface area, electrochemical AC impedance spectroscopy, and linear sweep voltammetry. Scale-like NiCo 2 O 4 electrode showed the highest specific capacity, compared to that of rod-like morphology, which seems due to a superior catalytic activity for oxygen reduction reaction, with lower charging over-potential, high discharge capacity, and excellent cycle performance.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 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）