IONICS
·
2023
·Vol. 29
·期 4
·1627-1637
·
IF 2.8
Yu Rui,Wang Qing,Li Zhaokuan,Su Hao,Lan Yongzhi
By designing the composition of transition elements and combining the adjustable structure of MOFs, it is reported that the synthesis of bimetallic ZnCo-MOFs based on different Zn/Co molar ratios, then the NiZn 1 Co 2 -LDH nanospheres are synthesized by Ni 2+ hydrolysis. Compared with the bimetallic NiZn-LDH and NiCo-LDH, the trimetallic layered hydroxide NiZn 1 Co 2 -LDH after adding Zn 2+ reached a high specific capacity of 217.3 mAh g −1 at 1 A g −1 . Additionally, both have excellent cycle stability (84.6% capacity retention after 5000 charge–discharge cycles at 10 A g −1 ) and strong rate performance (72.47% capacity retention rate at 10 A g −1 ) as well. Furthermore, a hybrid supercapacitor (HSC) with NiZn 1 Co 2 -LDH as positive electrodes and activated carbon as negative electrodes was fabricated. The HSC device delivered a high energy density of 45 Wh kg −1 at a power density of 774.1 W kg −1 and excellent cycling stability (specific capacity retention of 92% after 10,000 cycles).
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Hua Tian,Wentao Bao,Yang Jiang,Lin Wang,Lin Zhang,Ou Sha,Cunqi Wu,Faming Gao
The ingenious synthesis strategies have been highly desired to construct hybrid composites with intriguing properties for supercapacitors . Herein, Ni-Al LDH (layered double hydroxide)/NNDG (nitramine-N-doped graphene) hybrid composites with a layered structure were fabricated via a novel self-assembly process. Nitramine-N dopants anchored to graphene framework allow the self-immobilization of delaminated Ni-Al LDH nanolayers onto the surface of two-dimensional carbonaceous scaffolds and boost the abundance of Ni 3+ within hybrid composites along with the removal of interlayer anions within Ni-Al LDH-NO 3 . Remarkably, the combination of Ni-Al LDH with NNDG can not only enhance the utilization of electrochemically active matrixes in dependence on the increase of electrolyte accessible active sites, but also maximize the electrochemically active contact between inorganic macromolecules and carbonaceous matrixes in favor of the establishment of conductive architectures. Furthermore, Ni-Al LDH/NNDG hybrid composites achieve a specific capacity of 975 C g −1 at a specific current of 1.0 A g −1 with a capacity retention of 75% as the increase of specific currents to 10 A g −1 , superior to Ni-Al LDH-NO 3 and Ni-Al LDH/rGO hybrid composites. The hybrid supercapacitor comprised of Ni-Al LDH/NNDG hybrid composites as a positive electrode and activated carbon as a negative electrode attains a high energy density of 59 Wh kg −1 with a power density of 1991 W kg −1 at a specific current of 2.5 A g −1 and retains 95% of the initial capacitance after 10 000 cycles at a specific current of 10 A g −1 . The excellence electrochemical performance demonstrates clearly the potential application of self-assembled Ni-Al LDH/NNDG hybrid composites for hybrid supercapacitors.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Xiaoke Wang,Guangmeng Qu,Shuhua Hao,Gang Zhao,Xixi Zhang,Wenxuan Ma,Xijin Xu
Hybrid supercapacitors have the advantages of fast charging and discharging and long service life, which are an efficient and practical energy storage device. Therefore, the design of hybrid supercapacitors is the focus of current research. In this paper, the silver modified spinel NiCo 2 S 4 nanorods (Ag 2 S-NiCo 2 S 4 /CF) are synthesized by an efficient and economical method, which has excellent electrochemical performance. The Ag 2 S-NiCo 2 S 4 /CF shows a high specific capacity of 179.7 mAh g −1 at current density of 1 A g −1 , and excellent rate capability (capacitance retention of ~87% at 20 A g −1 ). The corresponding Ag 2 S-NiCo 2 S 4 /CF//AC/CF hybrid supercapacitor is assembled by Ag 2 S-NiCo 2 S 4 /CF as the positive electrode, which can provide an energy density of 35.978 Wh kg −1 at a high-power density of 800 W kg −1 and has significant cyclic stability (~80% of the initial capacitor after ~9600 cycles). Therefore, Ag 2 S-NiCo 2 S 4 /CF material is a promising electrode material that can be applied to hybrid supercapacitors.
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
JOURNAL OF ELECTRONIC MATERIALS
·
2020
·Vol. 49
·期 6
·4010-4017
·
IF 1.774
Ji Fengzhen,Pan Xuexue,Qin Juhua,Chen Xinman,Zha Qingbing
NiMoO 4 nanorods (NRs) were successfully fabricated on Ni foam with robust adhesion via a simple and cost-effective hydrothermal treatment, followed by a calcined process. In a three-electrode configuration with 3 mol L −1 KOH aqueous solution. The NiMoO 4 NRs supported on Ni foam as working electrodes achieve a high specific capacity of 1320 C g −1 at a charge and discharge current density of 2 mA cm −2 , and a desirable rate capability (884 C g −1 even at 10 mA cm −2 ) and a superior cycling ability with 88% capacity retention after 4000 cycles at 10 mA cm −2 . To enhance the energy density and enlarge the voltage window, the aqueous hybrid supercapacitor has subsequently been constructed by employing the NiMoO 4 and activated carbon electrodes as positive and negative electrodes, respectively, which delivered a high energy density of 52 Wh kg −1 at a power density of 725 W kg −1 . Impressively, the device indicates a long-term cycling stability with capacitance retention of 123% even after 9000 cycles in aa safe voltage range from 0 V to 1.45 V. These results definitely imply the promising prospect of NiMoO 4 NR electrodes for application in supercapacitors.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2023
·
IF 4.7
Lin Sun,Yu Liu,Qingjun Yang,Fangrong Yan,Xiaoying Liu,Changhong Wang,Runmei Luo,Weidong Shi
Exploiting the theoretical capacity of transition-metal selenide (TMSe) electrodes with improving stability is a challenge in hybrid supercapacitors (HSCs). An in-situ strategy of multidirectional recombination of reasonable/stable hierarchical structure and multiphase synergy is proposed to boost TMSe electrodes to a higher level. Herein, trimetallic layered double hydroxides (CoNiMn-LDH) are in-situ reconstructed with hollow CNFs (carbon–nitrogen frameworks), which can expose numerous active sites and facilitates rapid charge transport. After systematic selenization (time gradient), the valence-rich multiphase (Co, Ni, Mn)-Se@CNFs is regulated and the hierarchical structure is further optimized with reduction of layer spacing for rapid charge transfer and OH – adsorption. The multiphase coordinated electrode demonstrates a high capacity (334.7 mAh g −1 , 1 A g −1 , 6 M KOH) and superior rate capability (277.8 mAh g −1 , 10 A g −1 , 83.0%). Besides, the assembled HSC demonstrates a quite high energy density ((Co, Ni, Mn)-Se@CNFs//Activated carbon, 91.6 Wh kg −1 at 800 W kg −1 ). The ultra-high cycle retention rate (without attenuation, 16,000 cycles) illustrates the excellent stability, which is superior to the HSCs we know that use TMSes. The in-situ strategy with systematic research on structure/phase regulation provides effective ideas for the preparation and application of high-capacity electrodes and high-efficiency HSCs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Jiaying Tian,Hao Guo,Mingyue Wang,Yanrui Hao,Jiaxi Xu,Henglong Ren,Yingfei Hui,Wu Yang
Nickel-cobalt sulfides (NiCo 2 S 4 ) with abundant valence states are promising electrode materials for multiple faradaic reactions in hybrid supercapacitors. However, the slow electron transfer kinetics and lack of active sites restrict its electrochemical activity. Herein, an effective synthesis strategy was proposed to synergistically improve the electrochemical performance of NiCo 2 S 4 through one-step in-situ carbonization-vulcanization method of metal-organic frameworks (MOF). Through rational selection and optimization of the Ni:Co ratio, the fibre-assembled urchin-like 3D nanoflowers (denoted as NCSC) possess abundant sulfur vacancies and appropriate porosity. Interestingly, the S vacancies can expose more redox active sites, while the expandable 3D carbon conductive network can accelerate electron transport. Furthermore, the electrical conductivity and interfacial activity is synergistically enhanced by strong electronic coupling effects. Experimental results reveal that the NiCo 2 S 4 /C exhibit excellent electrochemical performance as a battery-type electrode material. The specific capacitance is 1934 F·g −1 (967 C·g −1 ) at 1 A·g −1 and the capacitance retention is 93.2% after 5000 cycles at 5 A·g −1 . The assembled hybrid supercapacitor device (NiCo 2 S 4 /C//AC) exhibits an exceptionally high energy density of 50.24 Wh·kg −1 at power density of 800 W·kg −1 . These results have significant implications for the optimization of the transition metal compounds for electrochemical energy-storage devices.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Lisha Tang,Lirong Qin,Jianwei Zhao,Jiafeng Huang,Guangqiu Zhang,Yihang Zhao
The construction of hierarchical micro/nanostructures as multicomponent electrodes presents a promising approach to address the issue of poor energy density in hybrid supercapacitors (HSC) and alkaline zinc-metal batteries (AZB). In this research, a novel hierarchical structure comprising NiMoO 4 nanosheets adorned with Ni-Co double hydroxide (DH) nanoneedle clusters was fabricated on carbon cloth utilizing a straightforward two-step hydrothermal method. Owing to the unique structure and the synergistic effects, the composite-coated electrode demonstrated superior performance when utilized as an anode in various energy storage devices. When paired with activated carbon in the HSC, it could achieve an energy output of 38 W h/kg and a maximum power of 7043 W/kg, and it sustained 80 % of its capacitance after 5000 cycles. More importantly, when assembled with Zn flakes as the cathode in an AZB, it attained an extraordinary energy density of 519.7 W h/kg and an impressive power density of 16316 W/Kg. These results signify that the hierarchical NiMoO 4 /Ni-Co DH nanocomposite holds considerable promise for applications in energy storage.
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
DALTON TRANSACTIONS
·
2024
·Vol. 53
·期 12
·5416-5426
·
IF 3.5
Xuan Liao,Xiaolong Hou,Caini Yi,Guimiao Wang,Shuo Wang,Ying Yang,Changguo Chen,Danmei Yu,Yuping Liu,Xiaoyuan Zhou
The development of an electrochemical energy storage system with exceptional performance is an important way to address the energy crisis and environmental pollution of the modem world. In this study, an NiCo2O4@MnS composite with a unique hierarchical structure has been successfully synthesized on an NF substrate using the hydrothermal–electrodeposition method. The results indicate that NiCo2O4@MnS possesses superior specific capacitance and excellent cycling stability. At a current density of 2 A g−1, its specific capacitance can reach 2100 F g−1, while the capacitance retention is still 76% after 10 000 cycles at 10 A g−1. Moreover, when the current density is 1 A g−1, the assembled NiCo2O4@MnS//AC device can deliver a specific capacitance of 203 F g−1, and the energy density is up to 55 W h kg−1 at a power density of 697 W kg−1. These outstanding electrochemical properties of NiCo2O4@MnS can be ascribed to the increase in ion diffusion, specific surface area and electronic conductivity due to its unique hierarchical structure and introduction of MnS.
研究领域:
材料科学
·
电化学能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Xiaoyi Du,Yongpeng Ma,Xiubo Xie,Huiyu Jiang,Xueqin Sun,Xiaoyang Yang,Yuping Zhang,Chuanxin Hou,Wei Du
Zinc ion hybrid supercapacitors (ZIHCs) have great potential to become next-generation energy storage devices due to their high-power density, low-priced raw materials, high safety, and excellent stable cycle life. Herein, the two-dimensional (2D) porous Nitrogen‑oxygen co-doped yeast cell wall derived‑carbon with a large specific surface area is synthesized via a molten salt method by mixing urea with yeast cell walls in an air atmosphere for ZIHC cathodes. The results demonstrate that the microstructure of porous biomass carbon can be regulated by the content of urea. Together with the large specific surface area, controlled morphology and hetero-element doping (nitrogen and oxygen), the biomass carbon cathodes exhibit satisfactory electrochemical performance in supercapacitors and ZIHCs. In the three-electrode system for supercapacitors, the optimal biomass carbon blended with 20 wt% urea (NAC-20) provides a surprising 103 % capacity retention after 10,000 ultra-long lifetimes and presents an energy density of 37 W h kg −1 at 91 W kg −1 for ZIHCs. By connecting two ZIHCs in series, a light-emitting diode can light up for 5 min. This work provides a green and effective strategy through molten salt method and heterogeneous element doping , which lights the way to improve the electrochemical properties of similar high-performance electrochemical storage devices.
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
IONICS
·
2024
·Vol. 30
·期 5
·3033-3044
·
IF 2.4
Lan Yongzhi,Yu Rui,Wang Qing,Dai Jianfeng
A trimetallic layered double hydroxide (LDH), NiCoMg-LDH, was rationally designed and synthesized in this paper by hydrolytic etching of Ni 2+ and Mg 2+ using Co-MOF as a conversion template, during which the rhombic dodecahedral structure of Co-MOF was etched to form a hollow cage structure overlaid with nanosheets on the surface. In comparison to the NiCo-LDH prepared by monometallic ion etching, the NiCoMg-LDH prepared in this study has a larger specific surface area and a more stable hollow porous structure, which can provide a large number of active sites for redox reactions as well as ion transport channels. The trimetallic Ni 1 Co 1 Mg-LDH has a higher specific capacity of 2141.62 F g −1 (208.21 mAh g −1 ) at 1 A g −1 current density compared to the NiCo-LDH. It also keeps 83.61% of its specific capacity after 5000 cycles at 10 A g −1 . It also performs well in rate capacity, with a capacity retention rate of 74.49% at 20 A g −1 . With Ni 1 Co 1 Mg-LDH serving as the positive electrode and AC serving as the negative electrode, the hybrid supercapacitor (HSC) exhibits a high energy density of 61.65 Wh kg −1 at a power density of 800.02 W kg −1 . After 10,000 cycles of charge and discharge, 80.17% of the capacity was retained. This study demonstrates that the trimetallic LDH structure generated using bimetallic ion etching with MOF as a template can increase the performance and stability of supercapacitors.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yajuan Jiang,Shining Zhang,Chunyu Xu,Bin Jia,Shijie Ren,Wenyu Zheng,Yicong Huang,Kunpeng Jiang,Xiuyun Zhang,Yunyun Zhao,Guisheng Zhu,Huarui Xu
In this paper, biomass carbon@Li(Ni 0.6 Co 0.4 )O 2 (BC@LNCO) micron-tube is successfully synthesized via a bio-templating method as cathodic material for lithium-ion hybrid supercapacitors. Cobalt nickel subcarbonates nanowires arrays are homogeneously grown on bagasse substrate via a unique synthesis strategy using a toluene-water interface reaction process, which subsequently transform as BC@LNCO micron-tube after lithiation process. The distinctive biomass fibre structure of bagasse biomass carbon leads to a significant enhancement in active sites in the BC@LNCO composite, which facilitates lithium-ion diffusion and enhances the contact area between the electrode and electrolyte. So, the prepared BC@LNCO electrode demonstrates improved electrical performances with a high specific capacitance of 921 F g −1 at 1 A g −1 and a good rate performance with 72 % retention at 10 A g −1 . In addition, the lithium-ion hybrid supercapacitor is fabricated with BC@LNCO and activated carbon (AC) as positive and negative electrodes, respectively. The BC@LNCO//AC device demonstrates a good energy density of 56.25 Wh kg −1 at 818.4 W kg −1 , and maintains 25.06 Wh kg −1 when the power density is up to 8143.42 W kg −1 , indicating that the prepared BC@LNCO composite can be a promising candidate as electrode material for Li-ion hybrid supercapacitor.
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
·
2025
·
IF 9.8
Huaiyu Wang,Yanjun Cai,Zhiran Zhang,Yu Liu,Rui Zhang,Ruiqiang Huo,Ruiyao Wu,Huiyun Cheng,Jiao Yin,Jian Yin,Zhi Su,Hui Zhu
Zinc-ion hybrid supercapacitors (ZHSCs) not only combines the advantages of batteries and supercapacitors, but also features low cost and environmental friendliness. However, the poor active site density and sluggish diffusion kinetics of carbon cathode brings about low capacity and terrible rate capability of ZHSCs. In this work, an activation assisted template procedure is proposed to synthesize nitrogen and phosphorous dual-doped hierarchical porous carbon (NP-HPC), where phytic acid acts as both doing precursor and activation medium. Benefitting from the synergetic modulation in porosities and surface functionalities, the optimized NP-HPC-2 delivers high capacity (394.51 F g −1 at 0.2 A g −1 ), superior rate capability (200.21 F g −1 at 50 A g −1 ) and excellent durability (95.7 % retention over 10,000 cycles). Consequently, the assembled ZHSC exhibits a remarkable energy density of 140 Wh kg −1 and an impressive power density of 40 kW kg −1 . Density functional theory (DFT) calculations revealed that the introduction of P doping adjust the distribution of local charge density of edged N with a lowered adsorption energy barrier for Zn 2+ storage. This work not only sheds light on the integrative effect of structure modulation and functionality regulation but also provide a feasible solution for the preparation of carbon cathodes towards high energy and power density ZHSCs.
研究领域:
材料科学
·
能源存储
·
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）