Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 21
·9984-9996
·
IF 9.931
Shunlong Zhang,Xiaojian Tan,Zhen Meng,Huajun Tian,Fangfang Xu,Wei-Qiang Han
Rechargeable multivalent ion (Al3+, Mg2+ and Zn2+) batteries provide a viable alternative to lithium ion batteries because of the supply risk of lithium resources and safety concern. In this study, rechargeable metal–iodine batteries, particularly aluminum/iodine batteries, were fabricated with novel active carbon cloth/polyvinylpyrrolidone (ACC/PVPI) composite cathodes prepared via a facile solution-adsorption method combined with freeze-drying. The use of active carbon cloth (ACC) endows the composites superior electronic conductivity, and significantly decreases the weight of the electrode due to its function as a current collector. Hydrogen bonding interaction between PVP and iodine in PVPI guarantees the depression of the shuttle effect of polyiodide, thus lengthening the cycle life. The density functional theory (DFT) analysis shows that such shuttle depression occurs due to the hydrogen-bonded iodine species, and the relatively large formation energy hints at higher conversion reaction efficiency of Al ion batteries. These characteristics make the composites an ideal electrode in various metal ion batteries. To be specific, the Al/I2 battery with a distinct working potential window achieves a high capacity of 180.1 mA h g−1 at 0.2C and can remain stable after 500 cycles with a stable capacity of 127 mA h g−1 at 0.6C. Moreover, at higher current density of 1C, the battery delivers a capacity of 102.7 mA h g−1 for up to 1050 cycles. These above-mentioned characteristics of metal–iodine (Li, Mg and Al/I2) batteries, related electrochemical performance measurements and theoretical modeling analysis show that the rechargeable iodine-based batteries provide a promising direction in designing high-performance energy storage/transfer systems.
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 Technology
·
2019
·Vol. 7
·期 9
·1900454
·
IF 3.163
Xue Li,Yujie Zhang,Jingwei Shen,Shun-an Cao,Ting Li,Fei Xu
Rechargeable Mg batteries are attractive candidates for large-scale energy storage batteries with high safety due to the low-cost and non-dendritic metallic Mg anode. However, exploring high-performance cathode materials is blocking their development. Herein, a high-rate rechargeable Mg battery is established with a AgCl cathode, delivering a high reversible capacity of 70.3 mAh g −1 at 100 mA g −1 , an outstanding rate capability of 32.6 mAh g −1 at 1000 mA g −1 , and a superior long-term cyclability over 500 cycles. Further investigation of the mechanism demonstrates that a conversion reaction takes place between AgCl and metallic Ag 0 for the cathode. The solid-state Mg 2+ diffusion coefficient is as high as 8.1 × 10 −11 cm 2 s −1 , which would be the reason for the high rate capability. The current study reveals significant insights to select promising Mg-storage conversion cathodes by a combination of soft anions and soft transition-metal cations.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Nanoscale
·
2018
·Vol. 10
·期 23
·11165-11175
·
IF 7.233
Rutao Wang,Shijie Wang,Yabin Zhang,Dongdong Jin,Xinyong Tao,Li Zhang
Sodium-ion batteries and capacitors are considered as low-cost energy storage devices, compared to Li-ion counterparts. However, most anodes for sodium-ion devices show sluggish kinetics and poor structural stability caused by the large radius (1.02 Å) of Na+. One candidate anode is MoS2, a 2D atomic layered material with a large interlayer spacing of 6.2 Å, that can take up and release Na+via two working principles: a two-electron intercalation process and a four-electron conversion reaction. Herein, we report a facile method to synthesize a MoS2–amorphous carbon (MoS2–AC) nanocomposite and further study the effect of the two working principles on the structure, interphase, and charge storage properties of MoS2–AC. The two-electron intercalation reaction enables the MoS2–AC electrode to have a higher rate capability and superior stability than that via the four-electron Na+ conversion reaction. This favorable Na+ charge storage performance of MoS2–AC via the two-electron intercalation process is attributed to its pseudocapacitive behavior, a stable solid electrolyte interphase and robust stability of the structure, which enables us to fabricate a sodium-ion capacitor that can deliver high energy density at a high rate. This work underscores the potential importance of realizing fast Na+ charge storage via an intercalation process as a strategy for the fabrication of high-performance sodium-ion capacitors and batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Meiqi Gao,Junhao Ma,Yanyan Li,Ximao Lin,Limin Wu,Yidong Zou,Yonghui Deng
Hydrogen generation is one of the crucial technologies to realize sustainable energy development, and the design of advanced catalysts with efficient interfacial sites and fast mass transfer is significant for hydrogen evolution. Herein, an in situ coassembly strategy was proposed to engineer a cerium-doped ordered mesoporous titanium oxide (mpCe/TiO2), of which the abundant oxygen vacancies (Ov) and highly exposed active pore walls contribute to good stability of ultrasmall Pt nanoclusters (NCs, ∼ 1.0 nm in diameter) anchored in the uniform mesopores (ca. 20 nm). Consequently, the tailored mpCe/TiO2 with 0.5 mol % Ce-doping-supported Pt NCs (Pt-mpCe/TiO2-0.5) exhibits superior H2 evolution performance toward the water–gas shift reaction with a 0.73 molH2·s–1·molPt–1 H2 evolution rate at 200 °C, which is almost 6-fold higher than the Pt-mpTiO2 (0.13 molH2·s–1·molPt–1 H2). Density functional theory calculations confirm that the structure of Ce-doped TiO2 with Ce coordinated to six O atoms by substituting Ti atoms is thermodynamically favorable without the deformation of Ti–O bonds. The Ov generated by the six O atom-coordinated Ce doping is highly active for H2O dissociation with an energy barrier of 2.18 eV, which is obviously lower than the 2.37 eV for the control TiO2. In comparison with TiO2, the resultant Ce/TiO2 support acts as a superior electron acceptor for Pt NCs and causes electron deficiency at the Pt/support interface with a 0.17 eV downshift of the Pt d-band center, showing extremely obvious electronic metal–support interaction (EMSI). As a result, abundant and hyperactive Ti3+-Ov(-Ce3+)-Ptδ+ interfacial sites are formed to significantly promote the generation of CO2 and H2 evolution. In addition, the stronger EMSI between Pt NCs and mpCe/TiO2-0.5 than that between Pt and mpTiO2 contributes to the superior self-enhanced catalytic performance during the cyclic test, where the CO conversion at 200 °C increases from 72% for the fresh catalyst to 99% for the used one. These findings reveal the subtle relationship between the mesoporous metal oxide-metal composite catalysts with unique chemical microenvironments and their catalytic performance, which is expected to inspire the design of efficient heterogeneous catalysts.
研究领域:
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2022
·Vol. 37
·期 19
·3308-3317
·
IF 2.909
Wu Meng,Li Qifei,Cheng Siling,Yao Kaitong,Liu Lin,Jiang Yu,Feng Yuezhan,Rui Xianhong,Yu Yan
Sodium-ion batteries (SIBs) are considered as potential substitute in large-scale energy storage systems due to the abundant natural resources and low price of sodium, and environmental friendliness. However, commercial graphite anode in lithium-ion batteries cannot be directly applied to SIBs. Bimetallic selenides stand out among the many anode materials owing to their rich redox chemistry and superior conductivities. Here, a bimetallic selenide Cu 3 VSe 4 is successfully prepared via one-pot reaction in oil phase, and its energy storage performance for SIBs is investigated. It delivers an impressive capacity, excellent rate performance (298 mAh g −1 at 10 A g −1 ), and outstanding long-term cycling life (305 mAh g −1 over 1000 cycles at 2.0 A g −1 ). In addition, the Na + storage mechanism (including intercalation and conversion reactions) is revealed. This work provides a new way for the application of the Cu 3 VSe 4 in SIBs. Graphical abstract A bimetallic selenide Cu 3 VSe 4 is successfully prepared via one-pot reaction in oil phase. When it is evaluated as the anode for sodium-ion batteries, the Cu 3 VSe 4 displays an impressive capacity, excellent rate performance, and outstanding long-term cycling life. In addition, the Na + storage mechanism (including intercalation and conversion reactions) is revealed.
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
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Tongrui Shao,Liru Cao,Lin Li,Yang Su,Baolin Hou,Jian Lin,Xiaodong Wang
Water gas shift (WGS) reaction is an important process to remove CO contaminant in industrial hydrogen resources. The efficient catalyst that can work at low temperature is keenly desired to achieve high CO conversion from the viewpoint of thermodynamic equilibrium. Here, we develop a noble-metal-free catalyst of MoC nanorod (MoC NR) with the dominant (2 0 0) facet for the low-temperature WGS reaction. It exhibits a high performance with ∼ 100 % CO conversion at 175 °C, better than conventional MoC with the dominant (1 1 1) facet or the commercial Cu-based catalyst. Moreover, it shows rather better stability due to the presence of the dominant (2 0 0) facet. Various characterizations demonstrate that this facet facilitates MoC NR possessing higher removal capability of surface oxygen species to enhance the stability and lower activation energy to endow higher performance compared with conventional MoC. This study provides important implications for the rational design of cost-effective catalysts for the low-temperature WGS reaction.
研究领域:
催化化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 31
·期 50
·2107728
·
IF 18.808
Hongxin Liu,Wulin Zhang,Yan Song,Lanlan Li,Chengwei Zhang,Gongkai Wang
Carbonaceous materials have been usually adopted as the anode for high energy density potassium-ion hybrid capacitors (KICs) owing to their low voltage plateau, high conductivity, and excellent electrochemical compatibility. The improvements of their specific capacity and sluggish intercalation mechanism are still challenges to further boost the energy density of KICs while maintaining high power density and long cycle life. Herein, a N-doped mesoporous carbon sphere array composite is developed by a dual-templates method. The N-doped carbon sphere array with interpenetrated macro- and meso-pores facilitates the fast electron transport and rapid K + diffusion. The uniformly introduced Co 3 O 4 nanoparticles (NPs) confined in the array enable a kinetically boosted conversion reaction for excess and fast K + storage. The partially oxidized Co NPs can efficiently enhance the conductivity of the entire composite. By introducing this optimized conversion capacity from encapsulated Co 3 O 4 NPs, the composite with intercalation and conversion coupling mechanisms displays superior capacity and cycle life. The assembled KICs exhibit high energy/power densities (148 Wh kg −1 /124 W kg −1 ) and great cycling performance (94% after 5000 cycles, 0.5 A g −1 ). This promising strategy demonstrates an example for carbonaceous composite anode with synergistic K + storage hybrid mechanism toward high performance KICs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Energy Materials
·
2023
·Vol. 13
·期 12
·2203168
·
IF 27.8
Yifan Yu,Meng Lei,Decheng Li,Chilin Li
Solid-state fluoride ion batteries (SSFIBs) are anion-shuttle-driven and alkali-metal-free emerging energy storage systems, and have the advantages of low cost, high safety, and energy density. However, the current major challenges of SSFIBs or quasi-SSFIBs are the lack of high-conductivity fluoride electrolytes and the difficulty of mild-temperature operation of full cells. Here, a 2D fluoride conductor (KSn 2 F 5 ) synthesized by mechanochemical method is employed as the compatible solid electrolyte with a high F-ion conductivity of 10 −4 S cm −1 at 60 °C. The high concentration and frequent hopping of charge carriers in F-vacancy-rich KSn 2 F 5 contribute to the higher ionic conductivity compared to most reported fluoride structures. Integrating this layered electrolyte with high-voltage CuF 2 cathode and Sn/SnF 2 anode, a highly reversible cycling of conversion-type quasi-SSFIBs with a discharge capacity of 150 mAh g −1 for at least 70 cycles at 60 °C is achieved. The interface engineering aided by tetra- n -butylammonium fluoride salt facilitates the F-ion transfer between cathode and electrolyte and fluorination/defluorination conversion mechanism of CuF 2 cathode with optimized multiphase and nanodomain distributions.
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
Small
·
2019
·Vol. 15
·期 36
·1901775
·
IF 10.856
Kangzhe Cao,Huiqiao Liu,Wangyang Li,Qingqing Han,Zhang Zhang,Kejing Huang,Qiangshan Jing,Lifang Jiao
Potassium-ion batteries (KIBs) are promising alternatives to lithium-ion batteries because of the abundance and low cost of K. However, an important challenge faced by KIBs is the search for high-capacity materials that can hold large-diameter K ions. Herein, copper oxide (CuO) nanoplates are synthesized as high-performance anode materials for KIBs. CuO nanoplates with a thickness of ≈20 nm afford a large electrode–electrolyte contact interface and short K + ion diffusion distance. As a consequence, a reversible capacity of 342.5 mAh g −1 is delivered by the as-prepared CuO nanoplate electrode at 0.2 A g −1 . Even after 100 cycles at a high current density of 1.0 A g −1 , the capacity of the electrode remains over 206 mAh g −1 , which is among the best values for KIB anodes reported in the literature. Moreover, a conversion reaction occurs at the CuO anode. Cu nanoparticles form during the first potassiation process and reoxidize to Cu 2 O during the depotassiation process. Thereafter, the conversion reaction proceeds between the as-formed Cu 2 O and Cu, yielding a reversible theoretical capacity of 374 mAh g −1 . Considering their low cost, easy preparation, and environmental benignity, CuO nanoplates are promising KIB anode materials.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
PubMed
高影响因子
Nano Research
·
2020
·Vol. 13
·期 10
·2650-2657
·
IF 8.183
Hu Junxian,Xie Yangyang,Zheng Jingqiang,Lai Yanqing,Zhang Zhian
Bismuth (Bi)-based electrode has aroused tremendous interest in potassium-ion batteries (PIBs) on account of its low cost, high electronic conductivity, low charge voltage and high theoretical capacity. However, the rapid capacity fading and poor lifespan induced by the normalized volume expansion (up to ~ 406%) and serious aggregation of Bi during cycling process hinder its application. Herein, bismuth molybdate (Bi 2 MoO 6 ) microsphere assembled by 2D nanoplate units is successfully prepared by a facile solvothermal method and demonstrated as a promising anode for PIBs. The unique microsphere structure and the self-generated potassium molybdate (K-Mo-O species) during the electrochemical reactions can effectively suppress mechanical fracture of Bi-based anode originated from the volume variation during charge/discharge of the battery. As a result, the Bi 2 MoO 6 microsphere without hybridizing with any other conductive carbon matrix shows superior electrochemical performance, which delivers a high reversible capacity of 121.7 mAh·g −1 at 100 mA·g −1 over 600 cycles. In addition, the assembled perylenetetracarboxylic dianhydride (PTCDA)//Bi 2 MoO 6 full-cell coupled with PTCDA cathode demonstrates the potential application of Bi 2 MoO 6 microsphere. Most importantly, the phase evolution of Bi 2 MoO 6 microsphere during potassiation/depotassiation process is successfully deciphered by ex situ X-ray diffraction (XRD), X-ray photoemission spectroscopy (XPS), and transmission electron microscopy (TEM) technologies, which reveals a combination mechanism of conversion reaction and alloying/dealloying reaction for Bi 2 MoO 6 anode. Our findings not only open a new way to enhance the performance of Bi-based anode in PIBs, but also provide useful implications to other alloy-type anodes for secondary alkali-metal ion batteries.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
QUIMICA NOVA
·
2022
·Vol. 45
·期 6
·654-658
·
IF 1.145
Luo Yu,Liu Qing,Yang Lingxiao,Yan Youwei
The ternary amorphous CuSeP2 was designed and prepared as the anode material of potassium ion battery for the first time, and its electrochemical performance was also investigated. After ball-milling with commercial graphene powder, it is used as the anode material for potassium ion battery with reversible specific capacity up to 300 mAh g-1, and the corresponding initial coulombic efficiency is close to 60%. What’s more, the specific capacity remains above 150 mAh g-1 after 100 cycles at 200 mA g-1. When increasing the current density to 1000 mA g-1, the CuSeP2/graphene composites still has a potassium storage specific capacity of 100 mAh g-1. Our results show that the potassium storage mechanism of the ternary CuSeP2 anode material is a typical conversion reaction and the introduction of Cu can not only buffer the volume expansion during the subsequent electrochemical reaction, but also effectively enhance the electrochemical reversibility of potassium ion.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2014
·
IF 5.211
Xinxin Jiang,Kaiqiang Wu,Lianyi Shao,Miao Shui,Xiaoting Lin,Mengmeng Lao,Nengbing Long,Yuanlong Ren,Jie Shu
Copper nitrate hydrate (Cu(NO 3 ) 2 ·2.5H 2 O) exhibits superior high lithium storage capacity (2285 mAh g −1 ) as anode material for lithium-ion batteries. The structural transformation and lithium storage mechanism of Cu(NO 3 ) 2 ·2.5H 2 O are thoroughly studied by various advanced analytical techniques. It is found that the lithium storage process of Cu(NO 3 ) 2 ·2.5H 2 O is associated with a quasi-reversible electrochemical conversion reaction. During the discharge process, the electrochemical reaction of Cu(NO 3 ) 2 ·2.5H 2 O with lithium results in the formation of Cu, LiNO 3 , Li 3 N, Li 2 O and H 2 O. In the reverse charge process, Cu(NO 3 ) 2 can be generated by a conversion reaction. As a result, Cu(NO 3 ) 2 ·2.5H 2 O shows the reversible charge capacities of 1632.1 mAh g −1 in 0.0–3.4 V and 689.1 mAh g −1 in 1.0–3.4 V, respectively.
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
危险品化学品经营许可证（带存储）