Materials Today Communications
·
2024
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IF 3.7
Shiyuan Xu,Youpeng Wang,Qiming Li,Jiawen Yan,Hao Huang,Caicai Zhang,Xiaoyu Zhang,Fuyi Jiang,Yanli Zhou
Herein, the high-capacity and amorphous MoS 3 has been employed to decorate the hollow Co 9 S 8 nano-spheres to fabricate the Co 9 S 8 /MoS 3 composites by a three-step synthesis. The chain-like and amorphous MoS 3 can provide a high capacity of 894 mAh g −1 and generate abundant active sites to boost the sodium storage properties of Co 9 S 8 based electrode. The heterogeneous interface between Co 9 S 8 and MoS 3 is conducive to the promotion of charge transfer and Na + diffusion kinetics. Thus, the Co 9 S 8 /MoS 3 as the novel anode materials exerts more outstanding sodium storage properties than pure Co 9 S 8 . At a given current density of 0.5 A g −1 , the Co 9 S 8 /MoS 3 delivers a desired reversible capacity of 621 mAh g −1 for 90 cycles. Even at 2 A g −1 , the Co 9 S 8 /MoS 3 exhibits a stable cyclic performance, the charge specific capacity is about 518 mAh g −1 for 500 cycles. At a high rate of 5 A g −1 , a high capacity of 486 mAh g −1 can be achieved, which is obviously higher than that of pure Co 9 S 8 . The remarkable sodium storage properties of Co 9 S 8 /MoS 3 are mainly resulted from the cooperate effects of amorphous MoS 3 and hollow Co 9 S 8 nano-spheres, which demonstrate the promising application of Co 9 S 8 /MoS 3 in future sodium storage devices.
研究领域:
材料科学
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能源存储
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Ming Xu,Yu Ma,Lei Wang,Shu Huang,Liming Chen,Rong Liu,Zikun Li,Guohui Yuan
Transition metal selenides (TMS) have been used to prepare hundreds of electrode materials for ion batteries due to their superior theoretical capacity, but have been repeatedly limited by the sluggish reaction kinetics and the enormous volume change during the repeated charge/discharge process. Here, we report a facile strategy to fabricate organic–inorganic composites by engineering a unique chemical bonding interface between TMS and conductive polymers. For the first time, poly(3,4-ethylenedioxythiophene) (PEDOT) is utilized to encapsulate iron diselenide (FeSe 2 ) nanoparticles by in situ polymerization, and the Fe-S bonds are meanwhile formed at the interface of FeSe 2 and PEDOT. The experimental analysis demonstrates the stability of Fe-S bonds during the sodiation/desodiation process and after long cycling, which can serve as a “bridge” for fast charge transfer and also serve as a “rivet” to stabilize the composite structure. When used for sodium ion storage, the composite offers an exceptionally long lifetime of up to 17,000 loops at 10 A/g without capacity degradation. In addition, it delivers a high specific capacity of 490.4 mAh/g and retains 60 % when the current density is amplified 150 times. The assembled full cell also exhibits excellent cycling stability. This work will provide a feasible way to improve the metal oxide/sulfide/selenides for long-life ion batteries.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Energy
·
2019
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IF 15.548
Sheng Huang,Chao Meng,Min Xiao,Shan Ren,Shuanjin Wang,Dongmei Han,Luyi Sun,Yuezhong Meng
Pseudocapacitive Na + storage based on the fast absorption/desorption kinetics is a new alternative to realize the high rate capability, which rely on increasing the surface area and creating surface vacancies. This means low Na + capacity because of low dielectric constant for the reported pseudocapacitive Na + storage materials. According to the capacitance formula, we find increasing the dielectric constant is a new path to improve the Na + capacity. This dielectricity (other than surface engineering) based pseudocapacitance can be called more real pseudocapacitance. The superparaelectric 2-dimensional (2D) Sn 2 P 2 S 6 has much higher dielectric constant than the bulk counterpart. The identical polaron direction triggered superparaelectricity and high dielectric constant of 2D Sn 2 P 2 S 6 are well verified. And 2D assembly between the 2D Sn 2 P 2 S 6 and graphene construct the compact network for conductivity of electron and Na + . As results, the 2D Sn 2 P 2 S 6 battery based on more real pseudocapacitance delivers alloy-like capacity and long cycle stability.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
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IF 9.5
Jinhua Zhang,Yongfeng Li,Yanzhen Liu,Yu Cui,Xiangru Zhu,Xiaowen Zhang,Chunli Guo
Bismuth (Bi), a promising alloy-type anode material for sodium-ion storage, has garnered significant interest due to its high theoretical capacity, environmental friendliness, and safety. However, during cycling, Bi undergoes substantial volume expansion, leading to fragmentation, which can cause short circuits and capacity degradation. In this study, we introduce a new method for synthesizing porous polycellular carbon spheres as a carbon framework and achieving bismuth loadings within the carbon structure. The carbon framework stabilizes the structure during cycling, while also dispersing the Bi metal within its pores. This effectively mitigates volume expansion and fragmentation of bismuth, and improves the reaction kinetics of the electrode. For sodium-ion half batteries, the electrode achieves a high discharge capacity (404.2 mA h g−1 at 1 A g−1) and stable cycling performance (reversible capacity of 389 mA h g−1 after 1500 cycles at 1 A g−1). Furthermore, capacity decay remains below 2% at current densities up to 5 A g−1. This work offers a promising strategy for alloy-type materials and paves the way for future practical applications.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 31
·期 18
·2100156
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IF 18.808
Wei Sun,Wenqing Zhao,Shaohui Yuan,Liming Zhang,Yue Yang,Peng Ge,Xiaobo Ji
Engineering advanced sodium-ion storage materials with considerable kinetic behaviors have triggered a series of active explorations. However they still suffer from interfacial gaps and uncompleted redox reactions, bringing about poor rate abilities. Herein, through the strategy of salt-fixed and thermochemical manners, the CoSe 2 /O C with interfacial chemical Co O C bonds are successfully prepared, displaying the reduced particles and optimized structural features. Meanwhile, from the analysis of long-term phase changing curves and ex-situ technologies, the CoSe 2 would be decomposed into CoSe and Se phases but captured by the synergistic effect of their physical-chemical evolutions, while the structure and new-type are stabilized after cycling. Profiting from the “bridge” roles of bonds, the electrons are effectively accelerated with the deepening redox reactions. As expected, based on these advantages, the ultra-fast abilities are reached about 346 mAh g −1 at 15.0 A g −1 after 3500 cycles, and their capacity of full-cells are also kept at about 326 mAh g −1 (cathodes Na 3 V 2 (PO 4 ) 3 @C vs anodes CoSe 2 /O C). The detailed analysis of kinetic behaviors strongly demonstrated that the increased interfacial charge storage and conductivities are crucial for promoting the ions-storage abilities. Given this, the rational work is anticipated to provide significant strategies for advanced energy-storage materials.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
Journal of Energy Chemistry
·
2025
·
IF 14.9
Huan Ma,Xuntao Zhang,Mingxuan Tang,Zhenjiang Lu,Min Wang,Xinxin Yin,Jing Xie,Jindou Hu,Yali Cao
Sodium-ion batteries (SIBs) show promising potential in the field of electrochemical energy storage due to their cost-effectiveness and similar operational mechanisms to lithium-ion batteries (LIBs). However, the dramatic volume expansion of electrode materials and the slow reaction kinetics caused by the large sodium ion (Na + ) radius hinder the practical application of SIBs. Here, we successfully prepared SnS 2− x Se x nanodots embedded within N-doped carbon nanofibers (CNF) for use as electrode materials of SIBs. The introduction Se provided abundant anionic defect sites for sodium-ion storage and enlarged the interlayer spacing of SnS 2 . In addition, the ultrafine nanodot structure reduces the volume expansion of SnS 2− x Se x and shortens the ion transport path. As an anode of SIBs, SnS 2− x Se x /CNF demonstrates remarkable reversible capacity (719 mAh g −1 at 0.5 A g −1 ), along with rapid charging ability (completing a charge in just 127 s). Meanwhile, the assembled full-cell battery manifested exceptional energy density of 165.8 Wh kg −1 at a high-power output of 5526 W kg −1 . This study presents an effective strategy for fabricating high-performance sulphide-based anode materials for SIBs, offering broad prospects for application.
研究领域:
材料科学
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电化学能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2024
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IF 5.4
Dafu Tang,Sicheng Fan,Zerui Yan,Ziyi Fang,Binhao Wang,Xia Zou,Qiulong Wei
Low-cost hybrid sodium-ion capacitors (SICs) can deliver high energy density at high power, showing tremendous potential for application in large-scale grids. The negative electrode using hard carbon (HC) faces the limitations of poor rate capability and low volumetric capacity. Herein, we report the design of internal-parallel hybrid electrodes composed of HC microparticles (MPs) and anatase TiO2 nanoparticles (TiO2(A) NPs) for sodium-ion storage. Taking advantage of the rapid surface-redox properties of TiO2 NPs and the pseudocapacitive Na+ adsorption of HC in the slope region (1.5–0.1 V vs Na+/Na), the hybrid electrodes deliver enhanced high-rate capacities. Additionally, by utilization of the geometric features of the MPs and NPs, the compaction densities and volumetric capacities of the hybrid HC/TiO2 electrodes are much higher than those of HC electrodes. A series of fine controls demonstrates that the C60T40 electrode (HC/TiO2 = 60:40 in wt %) exhibits excellent comprehensive electrochemical performance, including high volumetric/gravimetric capacities, high-rate capability, and long-term cyclability. Even at a high mass loading of 10 mg cm–2, the HC/TiO2 thick-film electrode delivers a high volumetric capacity of 162 mAh cm–3 at 5 mA cm–2, surpassing that of the HC electrode (64 mAh cm–3). This work highlights the design of internal-parallel hybrid electrodes with a comprehensive electrochemical performance for advanced SICs.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2021
·
IF 8.301
M. Khaqan Sarwar,Z. Xu,K. Yao,X. Liu,Y. Wang,J. Yang,J. Huang
The development of sodium-ion batteries with a high-power density and long life has attracted considerable interest because of their low cost and potential applications. In this work, we constructed N-doped graphene supported pseudocapacitive material consisting of Ni 3 S 4 grains (50 nm) coated by 3–4 layers of MoS 2 (MoS 2 @Ni 3 S 4 /NG) by facile one-step pyrolysis of nickel phthalocyanine. When the electrode was used as an anode for sodium-ion batteries, a pseudocapacitance-dominated storage mechanism was established, and the extrinsic pseudocapacitance could be further enhanced with the structural evolution of MoS 2 @Ni 3 S 4 during the sodiation/desodiation process, contributing to fast kinetics of Na + storage. The results of impedance analysis indicated that the MoS 2 layers play a vital role in reducing the charge-transfer resistance because the MoS 2 with wider interlayer spacing enables Na + to intercalate with a lower energy barrier compared with intercalating into Ni 3 S 4 directly. As a result, the electrode exhibits a superior cycle life over 1000 cycles, and an excellent rate capacity of 564 mAh g −1 can be achieved at 0.5 A g −1 .
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Xi Hu,Mingshan Wang,Rui Hu,Lin Yang,Qian Li,Zhenliang Yang,Jianlong Yang,Qiong Duan,Junchen Chen,Bo Yu,Bingshu Guo,Zhiyuan Ma,Yun Huang,Xing Li
Transition metal dichalcogenides (TMDs) are considered as potentially the most promising anodes for sodium-ion batteries, but still suffers from multistep electrochemical processes, resulting in sluggish Na + migration and poor Na + storage capacity in bulk materials. In this work, two kinds of TMDs (WS 2 and MoS 2 ) with similar energy band structures are rationally designed by atomic-scale regulated growth to synthesize porous WS 2 /MoS 2 /Carbon microspheres to disclose their internal kinetics regulation mechanism. It shows that due to the introduction of abundant unsaturated sulfur sites by WS 2 and MoS 2 lattice mismatches, which enhances charge accumulation and serves as active sites to increase the Na + pseudocapacitive storage. Furthermore, a built-in electric field between WS 2 and MoS 2 is formed by the rich heterojunction interfaces, promoting the kinetics of electrochemical transformations of two metallic elements in both WS 2 and MoS 2 . Therefore, the optimized WS 2 /MoS 2 /Carbon provides a discharge specific capacity of 499 mAh g −1 after 500 cycles at 1 A g −1 with a high capacity retention rate of 97.5 %, as well as specific capacity of 435 mAh g −1 after 100 cycles at 0.5 A g −1 with a capacity retention rate of 91 % for WS 2 /MoS 2 /Carbon || Na 3 V 2 (PO 4 ) 3 full cell, which demonstrates satisfactory capacity and outstanding cycling stability.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2025
·
IF 5.3
Yanmei Zhao,Yafang Zhao,Jun Zheng,Yueying Lin,Chuanfang Liu,Jiafan Zheng,Chengyu Zhang,Kai Zhang,Zhongrong Shen
Hydrothermal carbonization of sucrose is a conventional method for preparing hard carbon (HC) microsphere precursors; the construction of closed pores plays a crucial role in enhancing the platform capacity of sugar-based HC materials. This work proposes a strategy of a cohydrothermal method with sucrose and organic amine molecules to regulate the content of closed pores. Amine molecules undergo an amine-aldehyde condensation reaction with furfural intermediates during the hydrothermal process of sucrose, participating in the formation of carbon precursors. During the carbonization process, the presence of amine molecules accelerates the pyrolysis of the precursor and alters the microstructure of the HC microsphere precursor. This ultimately leads to the construction of closed pore structures during subsequent carbonization, thereby significantly enhancing the platform capacity. Research finds that different amine molecules affect the sodium ion storage behavior of the HC anode materials. Specifically, aniline-involved sucrose-derived HC (HCBS) and benzylamine-involved sucrose-derived HC (HCBIS) deliver large closed-pore volume of 0.072 m3 g–1 and 0.095 m3 g–1, respectively, much higher than sucrose-derived HC (HCS) of 0.024 m3 g–1. HCBS exhibits a remarkable reversible capacity of 382 mA h g–1 at a current density of 0.020 A g–1. Ex situ Raman tests demonstrate that the plateau capacity of HCBS (277 mA h g–1) results from both sodium ion intercalation and closed pore filling; conversely, the plateau capacity of HCBIS is primarily attributed to closed-pore filling. This work proposes a novel design concept to create abundant closed pores HC from sucrose, contributing to the rational design of the pore structure of sugar-based HC.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2025
·
IF 5.1
Cai-Xia Zheng,Ai-Jun Jiao,zhenhai fu,Yu-Xia Hu,Min-Peng Li,Hong-Yan Li,Wei-Hai Yi,Xiao-Rui Wang,Meng-Chao Liu,Fuliang Zhu,Mao-Cheng Liu
MXenes are promising 2D-layered anode materials for rechargeable batteries due to their outstanding electrical conductivity, high specific surface area, and tunable surface functional groups. However, serious self-stacking of the layered structure and the sluggish sodium diffusion kinetics lead to inferior rate capability and cycling stability. Herein, an organic molecular pillaring strategy is reported to enlarge the interlayer spacing of Ti3C2 through a dehydration condensation reaction between the •COOH groups in 3,3',4,4'-benzene tetracarboxylic acid (BTCA) molecules and the•NH2 groups of Ti3C2-NH2, which enables rigid organic BTCA molecules to be chemically pillared into the interlayers of Ti3C2 (Ti3C2-BTCA). The rigid organic BTCA molecules not only play a dual role of pillar and strain effects in Ti3C2 layers, but also expand the interlayer spacing. Therefore, they can significantly enhance the rate capability and cycling stability of Ti3C2. The Ti3C2-BTCA exhibits a reversible capacity of 182.30 mAh g-1 at a current density of 0.1 A g-1 after 2000 cycles, and maintained a reversible capacity of 77.9 %. Moreover, the sodium diffusion coefficients of Ti3C2-BTCA are 6.6×10-7 cm2 s-1. Ti3C2-BTCA shows a relatively low sodium diffusion barrier and a high sodium diffusion coefficient compared with Ti3C2. The interlayer engineering based on the organic molecular pillaring strategy is significant and meaningful for expanding the interlayer spacing of Ti3C2. This work provides theoretical guidance and new perspectives for the development of Na+ storage materials with high-rate capability.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2024
·
IF 13
Zhihao Wang,Yongyi Lu,Guangdi Zhang,Lingfeng Quan,Mingzu Liu,Haimei Liu,Yonggang Wang
Due to their significant capacity and reliable reversibility, transition metal sulphides (TMSs) have received attention as potential anode materials for sodium-ion batteries (SIBs). Nonetheless, a prevalent challenge with TMSs lies in their significant volume expansion and sluggish kinetics, impeding their capacity for rapid and enduring Na + storage. Herein, a Cu 1.96 S@NC nanodisc material enriched with copper vacancies is synthesised via a hydrothermal and annealing procedure. Density functional theory (DFT) calculations reveal that the incorporation of copper vacancies significantly boosts electrical conductivity by reducing the energy barrier for ion diffusion, thereby promoting efficient electron/ion transport. Moreover, the presence of copper vacancies creates ample active sites for the integration of sodium ions, streamlines charge transfer, boosts electronic conductivity, and, ultimately, significantly enhances the overall performance of SIBs. This novel anode material, Cu 1.96 S@NC, demonstrates a reversible capacity of 339 mAh g −1 after 2000 cycles at a rate of 5 A g −1 . In addition, it maintains a noteworthy reversible capacity of 314 mAh g −1 with an exceptional capacity retention of 96% even after 2000 cycles at 20 A g −1 . The results demonstrate that creating cationic vacancies is a highly effective strategy for engineering anode materials with high capacity and rapid reactivity.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）