Journal of Magnesium and Alloys
·
2022
·
IF 11.813
Zhiqiang Lan,Huiren Liang,Xiaobin Wen,Jiayang Hu,Hua Ning,Liang Zeng,Haizhen Liu,Jun Tan,Jürgen Eckert,Jin Guo
Hydrogen is considered one of the most ideal future energy carriers. The safe storage and convenient transportation of hydrogen are key factors for the utilization of hydrogen energy. In the current investigation, two-dimensional vanadium carbide (VC) was prepared by an etching method using V 4 AlC 3 as a precursor and then employed to enhance the hydrogen storage properties of MgH 2 . The studied results indicate that VC-doped MgH 2 can absorb hydrogen at room temperature and release hydrogen at 170 °C. Moreover, it absorbs 5.0 wt.% of H 2 within 9.8 min at 100 °C and desorbs 5.0 wt.% of H 2 within 3.2 min at 300 °C. The dehydrogenation apparent activation energy of VC-doped MgH 2 is 89.3 ± 2.8 kJ/mol, which is far lower than that of additive-free MgH 2 (138.5 ± 2.4 kJ/mol), respectively. Ab-initio simulations showed that VC can stretch Mg-H bonds and make the Mg-H bonds easier to break, which is responsible for the decrease of dehydrogenation temperature and conducive to accelerating the diffusion rate of hydrogen atoms, thus, the hydrogen storage properties of MgH 2 are remarkable improved through addition of VC.
研究领域:
材料科学
·
能源化学
·
纳米技术
·
催化化学
·
计算材料学
✓ 已验证
DOI
高影响因子
SusMat
·
2023
·Vol. 3
·期 4
·510-521
·
IF 28.4
Xiao Chen,Jianhang Xu,Yang Li,Yan Gao,Ge Wang
In response to global energy scarcity, frontiers in multifunctional composite phase change materials (PCMs) with photo-/electro-/magnetothermal triggers show great potential in multiple energy utilization. However, most available composite PCM candidates are inadequate for multiple energy storage applications simultaneously. Herein, a green synthetic route is proposed to develop bimetallic zeolitic imidazolate framework (ZIF)-derived 1D–2D bridged array carbon-based composite PCMs for simultaneous photo-/electro-/magnetothermal energy storage applications. As graphitization-induced catalyst, Co nanoparticles greatly boost the formation of ZIF-derived 1D–2D bridged array carbon framework with high graphitization and low interface electrical/thermal resistance. Benefiting from the broadband intense photon capture, fast photon/electron/phonon transport, and surface plasma resonance effect of Co nanoparticles, the resulting composite PCMs integrate advanced photo-, electro-, and magnetothermal storage functions. Furthermore, composite PCMs also exhibit long-lasting shape stability, structural stability, thermal storage stability, and photo-/electro-/magnetothermal storage stability after undergoing multiple heating–cooling cycles. This study is promising to accelerate the major breakthroughs of advanced multifunctional carbon-based composite PCMs toward multiple energy utilization.
研究领域:
材料科学
·
能源技术
·
纳米科技
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2017
·Vol. 6
·期 4
·1403-1411
·
IF 8.867
Junwei Yang,Haian Xie,Hao Chen,Zhuqun Shi,Tao Wu,Quanling Yang,Chuanxi Xiong
Flexible and eco-friendly dielectric materials with high energy density and breakdown strength have promising applications in energy storage devices. Here, cellulose nanofibril/boron nitride nanosheet nanocomposite films were fabricated from 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-oxidized cellulose nanofibrils (TOCNs) and hexagonal boron nitride nanosheets (BNNSs) in aqueous dispersions. The obtained TOCN/BNNS nanocomposites were further cross-linked by immersion in aqueous CaCl2 solution to improve their properties. The maximum discharged energy density of the finally prepared composite film was 3.9 J cm−3 with only 4 vol% of BNNSs at 380 MV m−1, achieving greater enhancement than the neat TOCN film with a low energy density of 0.1 J cm−3 at 50 MV m−1. It is much higher than the previously reported highest energy density of biopolymer-based composites (0.81 J cm−3) and also higher than that of the commercially available best dielectric polymer BOPP (2 J cm−3). Moreover, the nanocomposite films exhibited excellent mechanical flexibility and significantly improved thermal stability (100 °C increase in thermal decomposition temperature).
研究领域:
材料科学
·
纳米技术
·
能源存储
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2025
·
IF 4
Liu Lei-Peng,Tian Bo-Yi,Xie Rui-Ying,Wei Shu-Ping,Yuan Peng-Fei,Duan Yuan-Duo,Chen Xiao-Fei,Wang Yu-Xuan,Lv Sheng-Hua,Zhang Yue-Hong
Dielectric films are critical components in the fabrication of capacitors. However, their reliance on petroleum-derived polymers presents significant environmental challenges. To address this issue, we report on a high-performance biomass-based dielectric material derived from vanillin (VA), a renewable aromatic aldehyde. Vanillin was first esterified to synthesize vanillin methacrylate (VMA), which was then copolymerized with methyl methacrylate (MMA) via free-radical polymerization to yield P(VMA-MMA). By crosslinking the aldehyde groups in VMA with the amine groups in the polyether amine D400 (PEA), we fabricated a series of P(VMA-MMA)@PEA dielectric films with precisely tunable crosslinking densities. The unique molecular structure of vanillin, featuring both a benzene ring and an ester group, facilitates strong δ-π interactions and dipolar polarization, synergistically enhancing energy storage density while minimizing dielectric loss. At an optimal P(VMA-MMA) ratio of 1:10 and 80% theoretical crosslinking degree, the dielectric constant reaches 3.4 at 10 3 Hz, while the breakdown strength reaches 670.2 MV/m. Furthermore, the film exhibits an energy storage density of 7.1 J/cm 3 at 500 MV/m while maintaining a charge-discharge efficiency exceeding 90%. This study demonstrates a green and reliable strategy for designing biomass-based dielectric materials and opens new avenues for the development of eco-friendly energy-storage technologies.
研究领域:
材料科学
·
高分子科学
·
能源存储
·
可持续化学
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
Cell Reports Physical Science
·
2024
·
IF 7.9
Xiaoyu Huo,Xingyi Shi,Yuran Bai,Yikai Zeng,Liang An
With the escalating utilization of intermittent renewable energy sources, demand for durable and powerful energy storage systems has increased to secure stable electricity supply. Redox flow batteries (RFBs) have received ever-increasing attention as promising energy storage technologies for grid applications. However, their broad market penetration is still obstructed by many challenges, such as high capital cost and inferior long-term stability. In this work, combining the merits of both all-vanadium and iron-chromium RFB systems, a vanadium-chromium RFB (V/Cr RFB) is designed and fabricated. This proposed system possesses a high theoretical voltage of 1.41 V while achieving cost effectiveness by using cheap chromium as one of the reactive species. Experimentally, the system attains a peak power density of over 900 mW cm −2 at 50°C and demonstrates stable performance for 50 cycles with an energy efficiency of over 87%, presenting this system as a promising candidate for large-scale energy storage.
研究领域:
电化学储能
·
能源材料
·
可持续能源技术
·
先进电池系统
·
电网储能
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Miao Peng,Xueru Niu,Hao Lin,Huang Chen,Qi Yang,Dongzhi Li,Jingyu Xi,Le Liu
With the increasing severity of energy crises and environmental pollution, the development of efficient energy storage technologies to address the intermittent and unstable nature of renewable energy has become a critical research focus. Vanadium flow batteries (VFBs), owing to their high safety, long cycle life, and large-scale energy storage capacity, have emerged as a promising candidate for grid-scale energy storage. However, practical operation of VFBs faces challenges such as electrolyte concentration imbalance, self-discharge, and side reactions, necessitating online detection techniques for real-time monitoring of electrolyte states. This study proposes an online detection method integrating machine learning with spectral analysis to simultaneously determine vanadium ion concentration and state of charge (SOC) in the positive electrolyte of VFBs. By establishing a standardized spectral database and training machine learning models, high-precision predictions of vanadium concentration and SOC were achieved. Experimental results demonstrate that the optimal model achieves relative prediction errors within 0.28 % for vanadium concentration and 2.30 % for SOC, indicating robust practicality and reliability. Furthermore, long-cycle tests have verified the effectiveness of this method in real-time monitoring of electrolyte concentration and SOC variations. This study provides important technical support for optimizing the performance and operational management of vanadium flow batteries while also offering a potential approach for further investigating the mechanisms of vanadium ion transmembrane migration.
研究领域:
储能技术
·
光谱学
·
机器学习应用
·
电池管理系统
·
可再生能源集成
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Hong Wang,Shuai Wu,Peihua Zhao,Chao Wang,Li Guo,Yanzhong Wang
Rationally designing metal organic frameworks (MOFs) as an ideal dual-function material for water electrolysis and supercapacitors is of great significance for energy storage and conversion. Herein, we successfully synthesized the nanoneedle-like structure CoNi-MOF by partially replacing 2, 5-thiophenedicarboxylic acid (TDA) with 1, 1′-Ferrocenedicarboxylate (Fc). The exchange of Fc ligand can modulate the morphology and electronic structure of CoNi-TDA, thus exposing the abundant active sites and improving the electrical conductivity. The as-prepared CoNi-TDA/0.2Fc exhibited a low overpotential of 236 mV at 10 mA cm −2 for oxygen evolution reaction (OER) and a low Tafel slope of 40.44 mV dec −1 . Additionally, CoNi-TDA/0.2Fc demonstrated a notable specific capacitance of 1409 F g −1 at 1 A/g and excellent stability, maintaining a capacitance retention of 96.54 % after 20,000 cycles. The study proposes a new strategy to modulate the morphology and electronic structure of MOFs via the ligand exchange for high-performance energy storage and conversion device.
研究领域:
材料科学
·
电化学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2018
·
IF 5.091
Hongtao Ge,Zhengxiang Gu,Peng Han,Hanchen Shen,Abdullah M. Al-Enizi,Lijuan Zhang,Gengfeng Zheng
The increasing accumulation of CO 2 in the atmosphere has been leading to serious environmental problems. Electrochemical reduction of CO 2 is a potential means of carbon recycling for energy storage and environmental sustainability. However, it is limited by the lack of highly active and selective electrocatalysts. Here we demonstrate the development of mesoporous tin oxide (SnO 2 ) for electrocatalytic CO 2 reduction, which facilitates the adsorption and electrochemical reduction of CO 2 inside mesopores. The highly-ordered and uniform pore sizes of the mesoporous SnO 2 electrocatalyst favor the enhancement of formation of carbon monoxide (CO) and formate during the electrochemical reduction. The combined faradaic efficiencies of CO and formate reach a peak value of ∼80% at a current density of 5 mA cm −2 at −0.8 V vs. reversible hydrogen electrode. This work suggests attractive development of mesoporous electrocatalysts with a variety of pore size and structures for efficient energy conversion and electrochemical CO 2 reduction.
研究领域:
材料科学
·
电化学
·
环境科学
·
能量转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Pengxuan Wang,Yuming Gao,Haoyu Yan,Zhengwu Yang,Chaoping Xu,Dawei Tang,Bo Jiang
CO 2 methanation offers a practical solution for sustainable, renewable energy storage and long-term space exploration missions. However, conventional direct solar-driven photothermal systems suffer from thermal response hysteresis and dynamic temperature fluctuations, undermining methane yield stability and limiting their applicability under high gas hourly space velocity (GHSV) conditions. Herein, a round-the-clock CO 2 methanation system is pioneered that integrates photovoltaic power generation with induction heating by a rapid-response electromagnetic metamaterial (EEM), serving as both a catalyst and a susceptor. The EMM assembles single atoms, nanoclusters, and nanotubes into a macrostructure by a 3D-printed strategy and rapidly reaches the methanation temperature of 300 °C within just 36 s at a frequency of 297 kHz with an input power of 461 W, achieving a substantially great CH 4 space-time-yield of 821 mmol g cat −1 h −1 at an ultra-high GHSV of 150 000 mL g cat −1 h −1 . The outdoor photovoltaic-driven induction heating system maintains stable production with a cumulative CH 4 output of 1373.2 L over one week, shielding the system from environmental instability. Notably, this system exhibits a solar-to-chemical energy efficiency of 13% and achieves 20% energy savings compared with conventional electric heating technologies, offering a prospective avenue for efficient and stable CO 2 methanation.
研究领域:
能源材料
·
催化
·
可再生能源
·
化学工程
·
可持续技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2022
·Vol. 34
·期 47
·2206970
·
IF 32.086
Zhijia Zhang,Xu Yang,Peng Li,Yao Wang,Xin Zhao,Javad Safaei,Hao Tian,Dong Zhou,Baohua Li,Feiyu Kang,Guoxiu Wang
Rechargeable multivalent metal (e.g., zinc (Zn) and aluminum (Al)) batteries are ideal choices for large-scale energy storage owing to their intrinsic low cost and safety. However, the poor compatibility between metallic anodes and electrolytes strongly hampers their practical applications. Herein, it is demonstrated that confining multivalent metals in a biomimetic scaffold (Bio-scaffold) can achieve highly efficient multivalent metal plating/stripping. This Bio-scaffold is well-tailored through the synergy of a parallel-aligned array of fractal copper branches and a CaTiO 3 (CTO)-based coating layer. By virtue of this design strategy, the as-developed Bio-scaffold-based Zn- and Al-metal anodes exhibited dendrite-free morphologies with high reversibility and long lifespan, as well as excellent performance for Zn and Al full batteries. Theoretical modeling and experimental investigations reveal that the fractal copper array not only facilitates multivalent ion diffusion and electrolyte wetting but also effectively reduces the local current densities during cycling; Meanwhile, the CTO-based coating layer effectively blocks interfacial side reactions and enables a homogeneous ionic flux. This work opens a new avenue for developing multivalent metal batteries.
研究领域:
材料科学
·
电化学
·
储能系统
✓ 已验证
DOI
高影响因子
Carbon Energy
·
2022
·Vol. 5
·期 2
·e255
·
IF 21.556
Yunke Wang,Yige Zhao,Kangli Liu,Shaobin Wang,Neng Li,Guosheng Shao,Feng Wang,Peng Zhang
Sophisticated efficient electrocatalysts are essential to rectifying the shuttle effect and realizing the high performance of flexible lithium-sulfur batteries (LSBs). Phase transformation of MoSe 2 from the 2H phase to the 1T phase has been proven to be a significant method to improve the catalytic activity. However, precisely controllable phase engineering of MoSe 2 has rarely been reported. Herein, by in situ Li ions intercalation in MoSe 2 , a precisely controllable phase evolution from 2H-MoSe 2 to 1T-MoSe 2 was realized. More importantly, the definite functional relationship between cut-off voltage and phase structure was first identified for phase engineering through in situ observation and modulation methods. The sulfur host (CNFs/1T-MoSe 2 ) presents high charge density, strong polysulfides adsorption, and catalytic kinetics. Moreover, Li-S cells based on it display capacity retention of 875.3 mAh g −1 after 500 cycles at 1 C and an areal capacity of 8.71 mAh cm −2 even at a high sulfur loading of 8.47 mg cm −2 . Furthermore, the flexible pouch cell exhibiting decent performance will endow a promising potential in the wearable energy storage field. This study proposes an effective strategy to precisely control the phase structure of MoSe 2 , which may provide the reference to fabricate the highly efficient electrocatalysts for LSBs and other energy systems.
研究领域:
材料科学
·
电化学
·
储能技术
·
纳米技术
·
电池技术
✓ 已验证
DOI
高影响因子
Metals
·
2024
·Vol. 14
·期 12
·1453
·
IF 2.6
Bo Pei,Xin Qiao,Que Huang,Changcheng Liu,Mengna Shi,Xiaomei Jiang,Feng Li,Li Guo
Na3V2(PO4)3(NVP) is considered to be a promising cathode material for sodium-ion batteries (SIBs). Ion doping can effectively improve its structural deformation, poor conductivity, and electrochemical performance. However, the research on the effect of ion doping on the thermal stability of NVP is still limited. In this paper, Mg/Ti co-doped and Mn/Ti co-doped modified NVP with carbon nanotubes (CNTs) (MgTi@ CNTs and MnTi@CNTs) were prepared, respectively, and X-ray diffraction (XRD) results proved that MgTi@CNTs and MnTi@CNTs have good structural stability and crystallinity. The electrochemical performance indicates that the dual strategy ofp-n-type co-doping and CNT coating provides superior sodium storage performance, enhancing both electronic conductivity and ion diffusion. Secondly, based on the safety point of view, the thermal stability ofp-n-type ion-doped NVP and its mixed system with electrolyte in a charged state was studied by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and accelerated calorimeter (ARC). The results show that the optimized MgTi@CNTs and MnTi@CNTs electrodes exhibit excellent thermal stability in the absence of electrolytes, indicating their high intrinsic safety. However, it is worth noting that in the electrode/electrolyte system,p-n-type ion-doped NVP have higher reactivity with the electrolyte, and their comprehensive thermal safety is lower than that of NVP. Therefore, in practical applications, it is necessary to comprehensively consider the thermal stability of the material and the thermal safety of its mixed system with the electrolyte. This paper provides a data basis for the practical application of NVP in SIBs.
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）