JOURNAL OF POWER SOURCES
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2025
·
IF 7.9
Jinpeng Hu,Yaru Cui,Yu Hao,Juan Wang,Xihong He,Shufeng Yang
Owing to the high theoretical capacity, multi-electron reactions and semimetallic characteristics, metal tellurides present promising potential for sodium-ion storage. Yet structural collapse and capacity degradation remain inevitable. In this work, a structural confinement strategy was employed to fabricate zinc-telluride/cobalt-telluride heterostructures (ZnTe/CoTe 2 @NC) that is constrained by nitrogen-doped carbon (NC) derived from a metal-organic framework (MOF) and reinforced by carbon nanotubes (CNTs), via template self-assembly followed by in-situ tellurization. The CNTs crosslink with the MOF precursor to yield a dual-restricted architecture that suppresses nanoparticles agglomeration and enhances cycling stability. In-situ and ex-situ techniques elucidate the “alloy-conversion” reaction mechanism and pseudocapacitive sodium storage behavior of the ZnTe/CoTe 2 @NC anodes. While the density functional theory (DFT) calculations reveal the electronic structure modulation underlying their enhanced conductivity. These favorable electrochemical features arise from the synergistic effects of the Zn-Co heterointerface, the highly conductive carbon network, and the abundant defect sites introduced by nitrogen doping, which mitigate sluggish ion transport and structural degradation. As a result, the ZnTe/CoTe 2 @NC anode delivers a high-rate capacity of 82.1 mAh·g −1 at 20.0 A g −1 and retains 106.1 mAh·g −1 at 1.0 A g −1 after 5000 cycles. This study offers a rational confinement strategy and provides insight into designing electrochemically durable telluride heterostructure anodes.
研究领域:
材料科学
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电化学
·
纳米能源
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储能技术
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无机功能材料
✓ 已验证
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2021
·Vol. 27
·期 62
·15479-15483
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IF 5.236
Jingfang F. Zhou,Rukang K. Li
Graphical LiNaTiTa 2 P 2 O 13 displays an open framework comprised of staggered [Ti 1/3 Ta 2/3 O 3 ] ∞ layers and PO 4 tetrahedra with a herringbone-like stacking pattern, similar to monophosphate niobium bronzes. The existence of pentagonal tunnels, hosting the Li + and Na + ions, endow LiNaTiTa 2 P 2 O 13 a moderate ion transport capability (4.67×10 −4 S/cm at 823 K). In addition, the layers constituted by corner-sharing TiO6 and TaO6 octahedra endow a possibility as being photo-catalyst. The successful substitution of Nb for Ta results in the optical absorption red-shifted towards visible range with a narrowing band gap comparable to that of TiO 2 (3.2 eV). Herein, we report a detailed structural, electric, thermal and optical analysis of a titanium and tantalum phosphate LiNaTiTa 2 P 2 O 13 . The title compound is comprised of typical ReO 3 -type layers constituted by corner-sharing TiO 6 and TaO 6 octahedra, bridged by PO 4 tetrahedra, and the structure is closely related to monophosphate niobium bronzes. The existence of pentagonal tunnels, hosting the Li + and Na + ions, endows LiNaTiTa 2 P 2 O 13 a moderate ion transportation behavior (4.67×10 −4 S/cm at 823 K). In addition, the successful substitution of Nb for Ta in LiNaTiTa 2 P 2 O 13 results in the optical absorption red-shift towards visible range with a narrowing band gap, which may provide a route of isomorphic replacement to band engineering for photo-catalysis.
研究领域:
材料科学
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电化学
·
光学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2026
·
IF 9.5
Lizhang Yang,Jiayi Tang,Peng Zhao,Cai Liu,Daniel Mandler,Keun-il Kim,Xifeng Xia,Zi-Han Zhao,Wu Lei,Qiubo Guo,Qingli Hao
Aqueous Na-ion batteries (ANIBs) are promising candidates for grid-scale energy storage owing to their inherent safety, low cost, and rapid ion transport kinetics. While current research focuses on enhancing capacity and kinetics to overcome energy density limitations and leverage their inherent kinetic advantages under extreme conditions such as high mass loading and low temperatures, investigations remain predominantly centered on electrode materials and electrolytes, with binders being notably understudied. Here, we investigate the impact of two prevalent binders-polyvinylidene difluoride (PVDF) and polytetrafluoroethylene (PTFE)-on the electrochemical performance of nickel hexacyanoferrate (NiHCF) electrodes in ANIBs. Our results reveal that PVDF's better adhesion and electrolyte wettability optimize ion transport, significantly enhancing electrode kinetics vs. PTFE. Utilizing PVDF as the binder in a 3D-printing platform, we fabricated a freestanding electrode achieving >20 mg cm−2 active material loading, superior kinetics, and >95% capacity retention over 4000 cycles. The derived full cell reduces polarization at −20 °C, delivering higher energy density than PTFE-based full cells. This work demonstrates a multiscale regulation strategy for binder-electrode structures, offering a viable pathway toward high-performance aqueous energy storage systems.
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产品关联
DOI
高影响因子
Journal of Energy Storage
·
2026
·
IF 9.8
Jiafan He,Zipeng Wang,Zhanxiao Lu,Shanhao Xu,Yifan Yang,Yuxuan Wang,Chen Zhu,Dexin Yang,Dan Li
Metal phosphorus trichalcogenides (MPTCs) have demonstrated remarkable advantages as anode materials for alkali metal ion batteries because of their unique electronic structure and layered characteristics. In this study, layered CdPS 3 was successfully prepared by chemical vapor transport, and its Na + storage performance and reaction mechanisms were systematically investigated. Electrochemical tests revealed that CdPS 3 maintains a reversible capacity of 195.7 mA h g −1 after 340 cycles at a high current density of 5 A g −1 , revealing exceptional cyclic stability. Comprehensive characterization confirmed that the sodium storage process follows a typical multi-stage mechanism encompassing intercalation, conversion, and alloying (mainly during the first 40 cycles) processes, wherein partial conversion of CdPS 3 generates electrochemically active CdS nanoparticles that participate in subsequent electrochemical processes. Kinetic analysis indicated high Na + diffusion coefficients in CdPS 3 , while theoretical calculations revealed preferential Na + adsorption within the CdPS 3 interlayers. These findings provide important theoretical and experimental foundations for developing high-performance metal phosphorus trichalcogenides anode materials.
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Yinshi Li,Ying Feng,Xianda Sun
One of the targets associated with developing high-performance alkaline direct liquid fuel cells is to maximize the utilization of catalysts and minimize the limitation of anion materials that suffer from low ion conductivity and thermal and chemical instability. Herein, an ionomer-free and phase-boundary-matched Na-ion direct formate fuel cell (Na-DFFC) was reported to address this issue from the viewpoint of meeting interface transport behaviors for electrochemical reactions. A proof-of-concept phase-boundary-matched Na-DFFC including neither ionomers nor additional liquid electrolyte yields a peak power density as high as 45 mW cm–2, primarily because the dissociation and hydrolysis of formate on anode and the generation of NaOH on cathode enable electrodes to possess sufficient Na+ and OH–, thereby increasing the double-phase boundary density, leading to a high catalyst utilization. Additionally, a stable 60 min constant current discharge at 90 °C proves the conceptual feasibility of the high-temperature Na-DFFC. These results present a new scheme toward high-performance alkaline direct liquid fuel cells in terms of meeting all requirements of electrochemical kinetics and mass and charge transport characteristics.
研究领域:
电化学
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能源材料
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燃料电池技术
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界面科学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Qiuju Xu,Heng Liu,Wenyan Du,Renming Zhan,Linyu Hu,Shujuan Bao,Chunlong Dai,Feng Liu,Maowen Xu
The low Se loading, volumetric expansion and polyselenide shuttling between cathode and anode are major factors to limit the further development of Na-Se batteries . To overcome above issues, metal-organic complex derived hierarchical porous carbon (HPC) was synthesized as host matrix for Se via a facile synthesis combined with annealing treatment. The unique hollow structure holds numerous micropores and mesopores for Se loading to form Se-HPC composite. The Se-HPC electrode shows outstanding rate capabilities of 330 and 260 mA h g -1 at 1 C and 5 C, respectively. It also exhibits a stable cycling performance for 1000 cycles at 2 C with a small capacity decay rate of 0.04% per cycle. Such good performance demonstrates the viability of Na-Se batteries with high Se loading of 56%, which may be attributed to the unique hollow structure of HPC with Se encapsulated within micropores and mesopores. This attractive structure not only promotes electrolyte infiltration and electron transfer but also provides additional buffer space to buffer volumetric expansion of Se and suppress polyselenides dissolution in carbonate electrolyte during cycling.
研究领域:
储能
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材料科学
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电化学
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电池技术
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
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2022
·
IF 10.383
Usman Ghani,Nousheen Iqbal,Ahmed A. Aboalhassan,Chenxin Zhou,Bowen Liu,Jinghan Li,Yan Fang,Tabish Aftab,Jiajun Gu,Qinglei Liu
The use of porous hard carbons (PHCs) as electrode materials in sodium-ion batteries has great potential; however, the exposure of large surface areas to electrolyte flow results in irregular and irreversible solid electrolyte interfaces (SEIs), leading to deteriorated ionic and electronic mobility and inferior initial Coulombic efficiency (ICE). These issues can be addressed through suitable structural modifications of PHC materials. Herein, the integration of high-surface-area PHCs with carbon nanofibers (CNFs) was accomplished by a simple electrospinning technique, which resulted in a uniform and reversible SEI layer. In the meantime, the CNFs’ mesh provided connectivity and conductivity in the as-integrated electrodes, whereas PHCs offered fast diffusion kinetics and high Na+ ion storage capacity. Additionally, PHC integration with CNFs demonstrated an excellent ICE of 77% and a specific capacity of 505 mAh/g at 25 mA/g. Furthermore, the conjugated microstructure also provided flexibility and stability to the electrode (260 mAh/g after 500 cycles). This remarkable synergy may promote the development of free-standing, flexible, and highly porous properties in a single material for advanced energy storage applications.
研究领域:
材料科学
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电化学
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能源存储
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纳米材料
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电池技术
✓ 已验证
DOI
高影响因子
ACS Nano
·
2024
·
IF 15.8
Yuansheng Shi,Fushan Geng,Yang Sun,Pengfeng Jiang,Wang Hay Kan,Wei Tong,Xueyi Lu,Guoyu Qian,Nan Zhang,Bin Wei,Bingwen Hu,Dapeng Cao,Xia Lu
The irrational utilization of an anionic electron often accompanies structural degradation with an irreversible cation migration process upon cycling in sodium-layered oxide cathodes. Moreover, the insufficient understanding of the anionic redox involved cation migration makes the design strategies of high energy density electrodes even less effective. Herein, a P3-Na0.67Li0.2Fe0.2Mn0.6O2 (P3-NLFM) cathode is proposed with the in-plane disordered Li distribution after an in-depth remolding of the Li ribbon-ordered P3-Na0.6Li0.2Mn0.8O2 (P3-NLM) layered oxide. The disordered Li sublattice in the transition metal slab of P3-NLFM leads to the dispersed |O2p orbitals, the lowered charge transfer gap, and the suppressed phase transition at high voltages. Then the enhanced Mn–O interaction and electronic stability are disclosed by the crystal orbital Hamilton population (COHP) analysis at high voltage in P3-NLFM. Furthermore, ab initio molecular dynamics (AIMD) simulation suggests the order/disorder of the transition metal layer is highly correlated with the stability of the Li sublattice. The cross-layer migration and loss of Li in P3-NLM are suppressed in P3-NLFM to enable the high reversibility upon cycling. As a result, the P3-NLFM delivers a high capacity of 163 mAh g–1 without oxygen release and an enhanced capacity retention of 81.9% (vs 42.9% in P3-NLM) after 200 cycles, which constitutes a promising approach for sustainable oxygen redox in rechargeable batteries.
研究领域:
材料科学
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电化学
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电池技术
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 19
·10625-10637
·
IF 14.511
Kun Wang,Xiaobing Huang,Tao Zhou,Dan Sun,Haiyan Wang,Zhi Zhang
The NASICON-type Na4MnV(PO4)3 (NMVP) possesses potential as a cathode material in SIBs, and is known for its stable 3D Na+ superconductive framework, high voltage platform, and relatively low cost and toxicity. Nevertheless, the intrinsic poor electronic conductivity and Jahn–Teller effect from Mn3+ during cycling limit its further application. Herein, to address such issues, a well-designed 3D porous spheroidal Ce3+-doped NMVP@CeO2/C cathode was constructed via a simple spraying drying-assisted route. As proved, the synergistic effect of Ce3+ doping in the crystal framework and CeO2 surface coating was achieved simultaneously, which greatly improved the electronic conductivity, facilitated the ion diffusion transfer and stabilized the crystalline structure. As a result, the as-prepared sample delivered superior discharge performance (50.3 mA h g−1 at 50C) and long circular life (91.0 mA h g−1 after 2000 cycles at 5C with 86.7% capacity retention). Furthermore, the reversible biphasic reaction for cathodes was confirmed by Galvanostatic intermittent titration technique (GITT) and ex situ XRD. The DFT calculation revealed the influence of Ce3+-doping on the crystalline framework and electrochemical properties. Finally, the optimized NMVP cathode also showed great potential for practical utilization through the successful assembly of full cells.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiaopeng Liu,Yaoqi Huang,Xiaomin Cheng,Youchong Hu,Shuai Luo,Yuanyuan Li,Xusheng Xia
With the increasing power density of integrated circuits challenging traditional passive heat dissipation, novel materials such as phase change hydrogel are often required. In this work, a biomimetic sweating phase change composite hydrogel is presented where a Co-N/O coordination structure is fabricated via the coordination reaction of CoSO₄·7H₂O and ethanolamine. The hydrated salt phase change material, Na₂SO₄·10H₂O, is embedded in a polyacrylamide matrix, and carbon nanotubes are introduced to construct a 3D thermal conduction pathway. During the phase change, Na₂SO₄·10H₂O absorbs heat and releases water for evaporative cooling. The Co-N/O structure, acting as a hygroscopic site, adsorbs ambient moisture when the system is inactive, promoting the hydration and regeneration of Na₂SO₄·10H₂O and enabling synergistic optimization. This composite hydrogel features a phase change enthalpy exceeding 130 J·g −1 . The addition of carbon nanotubes boosts its thermal conductivity by 107 % to 0.793 W·m −1 ·K −1 . The Co-N/O structure significantly enhances its moisture absorption/desorption capabilities, with a moisture absorption rate of 4.71 g·g −1 at 95 % relative humidity and a maximum water absorption rate of 2.7 g·g −1 ·h −1 . At 30 % relative humidity, over 80 % of water is released within 50 min at 60 °C. In operation, it reduces the heating plate temperature by 8.6 °C and maintains a low temperature for 140 min, offering an efficient and eco - friendly solution for high - density electronic device heat dissipation.
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产品关联
DOI
高影响因子
RSC Advances
·
2023
·Vol. 13
·期 24
·16610-16618
·
IF 3.9
Dengke Wang,Wanggang Zhang,Jian Wang,Xiaohong Li,Yiming Liu
In recent years, the integration of flexible printed electronics and electrochemical sensors has emerged as a new approach for developing wearable biochemical detecting devices. Among the materials utilized in flexible printed electronics, carbon-based conductive inks are considered to be crucial. In this study, we propose a cost-effective, highly conductive, and environmentally friendly ink formulation utilizing graphite and carbon black (CB) as conductive fillers, resulting in a very low sheet resistance of 15.99 Ω sq−1 (conductivity of 2.5 × 103 S m−1) and a printed film thickness of 25 μm. The unique “sandwich” structure of the working electrode (WE) printed with this ink enhances its electrical conductivity, leading to high sensitivity, selectivity, and stability, with almost no water film generated between the WE and the ion-selective membrane (ISM), strong ion selectivity, long-term stability, and anti-interference. The lower detection limit of the sensor for Na+ is 0.16 mM with a slope of 75.72 mV per decade. To validate the sensor's usability, we analyzed three sweat samples collected during physical activity, with Na+ concentrations within the typical range for human sweat (51 ± 4 mM, 39 ± 5 mM, and 46 ± 2 mM).
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产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Jian Wang,Di Zhang,Zhaojin Li,Qiujun Wang,Huan Wang,H.J. Woo,S. Ramesh,Yachuan Shao,Bo Wang
Transition metal polysulfides/oxides typically perform high reversible capacities in sodium-ion batteries/capacitors (SIBs/SICs), but low conductivity and slow redox reaction kinetics are still the main challenges for achieveing fast kinetics. Here, we construct the VS 4 /Nb 2 O 5 /GO composite structure, which can promote the overall conductivity and structural stability through the GO and VS 4 bonding (V-C and S-C) on the surface. Meanwhile, the chain-like VS 4 and Nb 2 O 5 connected with the V-O chemical bond can accelerate the electron and ion transfer internally, thus enabling the internal structure exposed during the activation process. Additionally, the bonding of VS 4 and Nb 2 O 5 is calculated by density functional theory (DFT), indicating that the strong metallic properties of the composite. When as the anode material of SIBs, the specific capacity of 268.8 mA h g −1 can be maintained after 2000 cycles at a current density of 10 A g −1 . After that, SICs are assembled using activated carbon (AC) as the cathode, which exhibit 58.01 Wh kg −1 at high power density of 3800 W kg −1 . This unique composite structure design can provide a reference for achieving fast electron and ion transport both internally and externally to the electrode material.
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产品关联
DOI
高影响因子
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