JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Hui Xiao,Xiaobing Huang,Yurong Ren,Haiyan Wang,Jianning Ding,Shibiao Zhou,Xiang Ding,Yuandao Chen
Na 3 V 2 (PO 4 ) 3 /nitrogen doped carbon (NVP/CN) composites have been fabricated by a simple and low cost solid-state technique using folic acid as the carbon-nitrogen source. The structure, morphology and electrochemical performance of NVP/CN composites coated with various carbon-nitrogen layer contents are well investigated. The results reveal that the NVP/CN composite with 3.3 wt% carbon-nitrogen exhibits the largest specific surface area, with a uniform carbon-nitrogen layer thickness of approximately 2 nm. When tested as cathode material for sodium ion battery , NVP/CN composite with 3.3 wt% carbon-nitrogen displays an outstanding high rate properties with the discharge capacity of 95 and 91 mAh g −1 at 10 and 20 C, respectively, and long cycle life up to 3000 times even at a high rate of 10 C due to the smallest charge-transfer resistance and highest Na + diffusion coefficient . The results suggest that folic acid is a promising carbon-nitrogen source for construction of NVP/CN and other cathode materials.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Yehu Han,Youzhang Guo,Jianbin Zhou,Xu Ding,Yuchen Zhang,Wanxia Li,Yang Liu,Yawei Chen,Yulin Jie,Zhanwu Lei,Yue Liu,Yong Guan,Yangchao Tian,Tao Cheng,Muqing Chen,Shuhong Jiao,Ruiguo Cao
Calcium metal batteries with high capacity and low cost are promising alternatives to Li-ion batteries for large-scale energy storage. However, its development is crucially impeded by the irreversible Ca metal anode, which is highly associated with uncontrollable Ca plating/stripping. Here, we report a new riveting strategy to regulate the nucleation and growth of a Ca metal anode in the 3D structure of a carbon nanotube film (CNF) by introducing in situ-formed Na metal mediators. Na metal mediators are found to first deposit in the CNF substrate prior to Ca nucleation and subsequently induce dense and uniform Ca plating due to their thermodynamically favorable kinetics. Therefore, even at a high current density of 10 mA cm −2 and a high capacity of 5 mAh cm −2 , it realizes the uniform nucleation and growth of dendrite-free Ca metal. Moreover, an unprecedented cycling life of over 800 cycles is also achieved for Ca metal batteries with a high coulombic efficiency above 98.4%. This work demonstrates the significance of a riveting strategy to enable the superior performance of Ca metal batteries by regulating the plating/stripping behaviors of Ca metal anodes and paves a new way for the development of Ca metal batteries.
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
Carbon Energy
·
2024
·
IF 19.5
Guobao Xu,Liyue Yang,Zhihao Yan,Zhikai Huang,Xue Li,Gencai Guo,Ye Tian,Liwen Yang,Jianyu Huang,Yaru Liang,Shulei Chou
Though plenty of research has been conducted to improve the low intrinsic electronic conductivity of NASICON-structured NaTi 2 (PO 4 ) 3 (NTP), realizing sodium-ion batteries with high areal/volumetric capacity still remains a formidable challenge. Herein, a multiscale design from anode material to electrode structure is proposed to obtain a gadolinium-ion-doped and carbon-coated NTP composite electrode (NTP-Gd-C), in which gadolinium ion doping, oxygen vacancy, optimized structure, N-doped carbon coating, and bridging on the three-dimensional network are simultaneously achieved. In the whole electrode, the excellent hierarchical electronic/ionic conductivity and structural stability are simultaneously improved via the synergistic optimization of NTP-Gd-C. As a result, excellent electrochemical performances of NTP-Gd-C electrode with a high areal/volumetric capacity of 1.0 mAh cm −2 /142.8 mAh cm −3 , high rate capability (58.3 mAh g −1 at 200 C), long cycle life (ultralow capacity fading of 0.004% per cycle under 10,000 cycles), and wide-temperature electrochemical performances (97.0 mAh g −1 at 2 C under −20°C) are achieved. Moreover, the NTP-Gd-C//Na 3 V 2 (PO 4 ) 3 /C full cell also delivers an excellent rate capacity of 42.0 mAh g −1 at 200 C and long-term high-capacity retention of 66.2% after 4000 cycles at 20 C. Highlights Developing high-performance sodium-ion batteries with the multiscale designed NaTi 2 (PO 4 ) 3 (NTP)-Gd-C material as the anode. Demonstrating the enhanced intrinsic ionic/electronic conductivity and structural stability of NTP-Gd-C electrode. Revealing the great potential for commercial applications of the NTP-Gd-C material.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Xuxu Wang,Ying Bai,Ruxiu He,Fen Yao,Limin Chang,Ping Nie
Metastable orthorhombic niobium pentoxide (T-Nb 2 O 5 ) with fast lithium storage capability and safe operating voltage is recognized as suitable anode material for high power density lithium-ion batteries (LIBs). While, the T-Nb 2 O 5 also suffers from low electrical conductivity in practical applications. In this work, the electrochemical performance of T-Nb 2 O 5 is enhanced by constructing a free-standing electrode and introducing the N-doped carbon substrate. The free-standing electrode consisting of the network-structured Nb 2 O 5 layer and porous carbon cloth (PCC) avoids the use of binders and benefits the electron transport. In addition, the introduction of N-doped carbon substrate is also beneficial to enhance the electronic conductivity of the Nb 2 O 5 . When used as the anode for LIBs , the PCC@Nb 2 O 5 demonstrates excellent long cycle life and rate performance, with a specific capacity of over 150 mA h g −1 after 3200 cycles at a current density of 1000 mA g −1 . This strategy of constructing free-standing electrodes provides new options for obtaining high-performance Nb 2 O 5 anode electrodes.
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
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Guangyu Fang,Xiaorui Ma,Rong Hu,Jiao Dai,Haoran Tian,Lin Li,Weilin Xu,Yonggang Yao,Jun Wan
Fiber-based energy storage devices present distinct advantages over rigid alternatives, particularly for flexible and wearable applications. However, achieving stable integration of electrochemically active materials with fiber substrates remains a significant challenge, especially for carbon fibers (CF), due to their inherent physical smoothness and chemical inertness make them prone to interfacial separation under repeated bending and deformation in practical applications. In this study, we employed a salt template-assisted vapor-phase polymerization method to achieve horizontally oriented growth of 2D conductive polymer complex on CF, thereby forming a bamboo sheath-like structure with a 2D juxtaposed ultrathin nanosheet-coated fiber interface (2D-JUN-FI). The skinned nanosheets on CF ensure maximized interfacial binding in the vertical interfaces through extensive surface coverage and hydrogen bonding interaction, while maintaining the structure integraty in the horizontal plane, thus resulting in both high mechanical robustness and electron mobility under static and dynamic deformations. The synthesized electrode of 2D polypyrrole and amorphous niobium oxide on CF composites (2D Ppy/a-Nb 2 O 5 /CF) demonstrates high specific capacity and an exceptionally long cycling life (88.06 % capacitance retention after 5000 cycles). This template-assisted horizontal growth of the 2D-JUN-FI skinned structure provides a novel approach for developing high-stability and long-life flexible energy storage devices.
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
Batteries & Supercaps
·
2023
·Vol. 6
·期 6
·e202300099
·
IF 5.7
Xiaoqi Wang,Pengpeng Shao,Shengchi Bai,Rui Yang,Xu Jin,Chunyi Zhi,Bo Wang
Graphical Guided longitudinal zinc growth : To enhance the stability and electrochemical properties of the Zn anode, a multi-functional artificial interface of the anodic covalent organic framework (COF) is fabricated to guide the uniform longitudinal Zn growth, and avoid dendrites and alkaline zincate formations. The Zn-I 2 full battery with the newly developed Zn anode exhibits a long cycling life of over 10000 cycles. Aqueous zinc (Zn) batteries hold considerable promise to address safety problems that frequently occur in electric vehicle cells or energy storage applications. However, Zn metal anode suffers seriously from dendrite, corrosion, and interface water decomposition in aqueous electrolytes, especially under large areal capacity or long charging duration. This is mainly because of the uneven longitudinal Zn growth induced by the anisotropic Zn 2+ diffusion, which is usually neglected in a laboratory study with low areal capacity. Herein, we report an artificial interface of the anodic covalent organic framework (COF, which can be rapidly synthesized and facilely assembled with Zn anode in a large area) to guide the uniform longitudinal Zn growth for dendrite-free Zn batteries. In-situ optical microscope observes that compared with the bare Zn anode, COF interface can promote the formation of the smooth and dendrite-free surface through spatial-triggered uniform longitudinal Zn growth. Theoretical calculation uncovers that anodic COF with a negative charge at its N sites could attract Zn 2+ to achieve uniform longitudinal Zn 2+ diffusion. In addition, this COF interface with superior hydrophobicity could suppress water decomposition and Zn corrosion. Consequently, the COF-functionalized Zn anode realizes a high coulombic efficiency under severe Zn plating/stripping conditions (10 mAh cm −2 ), contributing to a long Zn-I 2 full battery life of over 10000 cycles. This work highlights the high-areal-capacity Zn anode protection in external space beyond the interface.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Qingqin Ye,Peitao Zheng,Xiaohu Ao,Dahua Yao,Zhiwen Lei,Yonghong Deng,Chaoyang Wang
Using conductive binders, instead of the traditional binders and conductive additives, is an effective way to increase the specific capacity and long cycle life of the silicon (Si) anode. However, the rigid conductive binders of Si anodes tend to form cracks during the repetitive huge volume changes of Si. Here, a novel n-type conductive binder, multi-block polymer of poly(1-pyrenemethyl methacrylate) and polybutadiene (PPy- b -PB) was designed. The polybutadiene (PB) rubber was incorporated into the conductive binder by combining condensation and reversible addition-fragmentation chain transfer polymerization. With high initial coulombic efficiency of 77.9%, the PPy- b -PB/Si anode possesses high reversible capacity (2274 mAh g −1 ) and capacity retention (87.1%) at the rate of 0.2 C (0.84 A g −1 ) after 200 cycles. The superior cyclic performance of the PPy- b -PB can be ascribed to the PB rubber, which enhanced the reversible deformation ability, flexibility, and adhesion length scale of the binder, without with a negligible change of the charge-transfer resistance for the anode. The original structure and the preparation method of the multi-block conductive binder provide a new way to manufacture multifunctional binders.
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 ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Ru Chen,Ziqing Wang,Zixian Chen,Pinji Wang,Guozhao Fang,Jiang Zhou,Xiaoping Tan,Shuquan Liang
Hierarchical potassium vanadate (K 0.25 V 2 O 5 ) microspheres are synthesized via a facile hydrothermal reaction followed by annealing process. The K 0.25 V 2 O 5 microspheres with an average diameter of ∼1–2 μm, are composed of interconnected nanosheets , exhibiting the hierarchical structures. This novel architecture exhibits excellent lithium storage performance, including a discharge specific capacity of 249 mA h g −1 at the current density of 100 mA g −1 , good cyclic stability up to 500 cycles and a satisfactory rate capacity of 161.2 mA h g −1 at 1.5 A g −1 . The good performance of K 0.25 V 2 O 5 microspheres may be ascribed to the hierarchical spherical morphology and its stable structure. Importantly, a quantitative analysis method was first used to calculate the contribution of capacitive charge storage for potassium vanadates. The dominant capacitive charge storage mechanism enables the high rate capability of K 0.25 V 2 O 5 microspheres. However, the volumetric energy density of this material is tiny (897 Wh/L), which limits the practical application.
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 Materials Chemistry A
·
2017
·Vol. 6
·期 3
·1017-1027
·
IF 8.867
Rutao Wang,Shijie Wang,Yabin Zhang,Dongdong Jin,Xinyong Tao,Li Zhang
Sodium-ion-based capacitors and batteries are considered as a low-cost energy storage technology alternative to their lithium-ion counterparts owing to the abundance of sodium in Earth. Their widespread use is however limited by the lack of high-performance electrode materials. In this work, we report that MXenes-Ti3C2 can be oxidized into a Ti-peroxo complex gel at room temperature by simply adding H2O2, from concentrated to dilute. The highly water-soluble property of this gel allows the synthesis of a graphene-supported TiO2 nanocomposite with highly porous nano-/meso-hybrid architecture via a more facile and environmentally friendly way. The unique hybrid architecture of the produced TiO2–RGO nanocomposite results in pseudocapacitive behavior in Na+ charge storage with high reversibility, fast kinetics, long cyclability, and negligible degradation to the parent structure. By incorporating the TiO2–RGO composite as the anode, a novel sodium-ion capacitor is constructed that is capable of operating at a high voltage of 4.0 V and delivering a maximum energy density of 94.7 W h kg−1, which is comparable to lithium-ion based capacitors. The approach reported here could be potentially extended for fabricating a host of MXenes-derived metal oxide nanomaterials or nanocomposites for numerous applications, particularly in view of the expanding MXenes portfolio.
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
JOURNAL OF PHYSICS D-APPLIED PHYSICS
·
2022
·Vol. 55
·期 23
·234002
·
IF 3.409
Lijuan Hou,Limin Zhang,Jinhao Zang,Weixia Shen,Taiyi Zhang,Xiaowen Huang,Huiyu Yuan,Dezhi Kong,Ye Wang,Xinjian Li,Tingting Xu
K0.8Ti1.73Li0.27O4 (KLTO) is an important titanium-based anode material for lithium-ion batteries (LIBs) and is expected to become an alternative to carbonaceous materials on account of its nontoxicity, low cost, and high safety performance. However, it suffers from poor specific capacity at high charge–discharge rates due to its low conductivity and obstructed Li-ion diffusion. In this work, an Fe-doped KLTO@rGO (Fe-KLTO@rGO) composite prepared by following a simple electrostatic assembly process and its high-rate and long-cycle-life-performance as an anode in LIBs is obtained. The Fe-KLTO@rGO composite sample has an excellent specific capacity of 330 and 105 mAh g−1 at a current density of 1 C (1 C = 175 mA g−1) and 50 C, respectively. In addition, the Fe-KLTO@rGO composite sample can carry out a long cycle of 3000 cycles at a rate of 50 C, and the specific capacity remains at 127 mAh g−1.
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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Hanhao Liu,Dan Li,Honglang Liu,Xu Wang,Yaoxin Lu,Chao Wang,Li Guo
Cobalt selenide , as a star material in battery industry, has attracted much attention. However, when it is applied solely in sodium ion batteries , it will cause large volume expansion and material agglomeration, which will seriously affect the overall performance of batteries. In this work, we use ice bath impregnation to combine CoSe 2 nanoparticles with porous nitrogen-doped carbon networks (NC) as advanced anodes for ultra-long cycle life sodium ion batteries (SIBs). CoSe 2 nanoparticles are evenly attached to NC with strong interfacial contacts in CoSe 2 @NC. The strong contact of CoSe 2 on the porous carbon network, along with the carbon network's unique network cross-linking structure, results in rapid electron transfer and Na ion diffusion kinetics of CoSe 2 @NC, resulting in superior electrochemical performance . Besides, we have synthesized CoSe 2 @NC with different loading by changing Co 2+ concentration. The results show that CoSe 2 @NC anode thus provides a high reversible capacity of 406 mAh/g. In addition, at high current 5 A/g, it can keep a reversible capacity of 300 mAh/g after 4500 cycles with an average capacity loss of less than 0.01 % per cycle. The excellent anchoring structure enables it to form stable solid electrolyte film (SEI) and reduce the amount of dead sodium in the first charge–discharge process, showing high Initial Coulombic Efficiency (ICE) (89.2 %). Finally, CoSe 2 @NC and Na 3 V 2 (PO 4 ) 3 (NVP) are assembled into a full cell and the results shows an ultra-long cycle stability at 0.1 A/g. This strategy will facilitate the application of transition metal selenides in next-generation energy storage systems.
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
Energy Storage Materials
·
2022
·
IF 20.831
Dongli Chen,Tao Zhu,Ming Zhu,Siqi Yuan,Peibin Kang,Wenxi Cui,Jinle Lan,Xiaoping Yang,Gang Sui
The lifetime and safety of lithium metal batteries (LMBs) with commercial polyolefin separators and liquid electrolytes are deteriorated by the lithium dendrites, as well as leakage and combustion of liquid electrolytes. To effectively address these issues, a “ceramer” electrolyte is in-situ synthesized to exquisitely combine meritorious properties of both cera mic silica (e.g. high modulus) and poly mer poly-1,3-dioxolane (e.g. flexibility/good interface with electrodes), leading to excellent performance for the LMBs. The lithium anodes with the novel “ceramer” electrolyte exhibit ultra-long cycle life and lithium dendrite-free property that is confirmed by in-situ optical microscope. The Li/Li symmetric cells stably plat and strip for up to 3,600 h at 0.5 mA cm −2 with a constant low overpotential. The LiFePO 4 /Li cells present up to 90.3% capacity retention and 99.9% coulombic efficiency at 1 C after 500 cycles. Even at a higher current density of 2 C, the cell performs an excellent long-term cycle stability with a capacity decay of only 0.0285% per cycle. More significantly, the assembled coin cells (LiNi 0.8 Co 0.1 Mn 0.1 O 2 /Li) delivers high capacity retention of 80.2% at 1 C after 500 cycles, and the pouch cell with high cathode loading (10 mg cm −2 ) and thin lithium anode (∼50 µm) is operated stably. This research provides a very promising strategy to construct a unique organic-inorganic electrolyte with excellent comprehensive properties effectively enabling long-cycle and high-safety LMBs.
研究领域:
材料科学
·
电化学
✓ 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）