JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 17
·1-12
·
IF 2.8
Liu Yang,Yang Jingdong,Wen Jiaxin,Ye Junliu,Liu Huan,Lu Liwei
Recently, rechargeable magnesium-ion batteries (MIBs) and rechargeable magnesium/lithium hybrid-ion batteries (MLHBs) have gained recognition as promising energy storage devices. However, the conventional CuS cathodes exhibit sluggish kinetics and poor cycle stability, thereby impeding the advancement and application of CuS. In this work, we have developed an economical and simple in-situ approach for synthesizing CuS@Cu foam (CSC) and evaluated its potential as a cathode material for both MIBs and MLHIBs. In both MIBs and MLHIBs, the CSC cathode demonstrates competitive performance. In MIBs, at a current density of 100 mA g −1 , the initial discharge specific capacity of the CSC is 150.94 mAh g −1 , which is higher than that of commercial CuS (3.99 mAh g −1 ). In MLHIBs, the CSC exhibits a discharge specific capacity of 502.95 mAh g −1 after 70 cycles at a current density of 100 mA g −1 , which significantly surpasses the discharge specific capacity of commercial CuS (229.52 mAh g −1 ). This performance improvement is attributed to the presence of Li + ions, which expedite the reaction kinetics, obviate the need for an activation process, and effectively facilitate the conversion reaction. In conclusion, by in-situ synthesis of CSC, the active material CuS firmly adheres to the Cu foam current collector. This approach is not only economical and simple but also significantly enhances the reactivity of the electrode material, thereby improving the electrochemical performance. This work provides valuable insights for the design, synthesis, and performance optimization of cathode materials of magnesium metal-based batteries.
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高影响因子
JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Zonghui Zhang,Lili Hu,Haizheng Tao,Jinjun Ren
Glassy precursors in the Li 1+ x Ga x Ge 2- x P 3 O 12 system are prepared by melting and casting. The glasses are annealed at the crystallization peak temperatures to obtain glass ceramics with Na-superionic conducting structure. The ionic conductivity can be significantly increased by substituting Ge with Ga and Li. The highest ionic conductivity of the glass ceramics is 9.74 × 10 −5 S cm −1 at 20 °C. Multiple magic angle spinning nuclear magnetic resonance (MAS NMR) techniques are used to characterize the structural transitions from glasses to their glass ceramic counterparts. 71 Ga and 31 P MAS NMR spectra have shown that the local structures of the glasses are distinctly modified after crystallization. The second coordinated shells of Ga 3+ ions are consisted of phosphorus in both glasses and glass ceramics although their coordination numbers change. The glassy precursors show homonuclear segregations such as P-O-P and Ge-O-Ge linkages. However, the glass ceramics are homogeneous, in which per phosphorus tetrahedron connects with total four Ga and Ge, forming four different phosphorus species (Q 0 (4-n)Ge, nGa (n = 0, 1, 2, and 3)). A random distribution model can be used to quantitatively predict the population of every Q 0 (4-n)Ge, nGa species, if the compositions are known. A correlation between local structure and ionic conductivity is proposed.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Dexuan Pei,Yuhang Li,Shuo Huang,Min Liu,Jianhe Hong,Shuen Hou,Hongyun Jin,Guozhong Cao
Polycaprolactone (PCL) based composite polymer electrolytes (CPEs) is a promising candidate applied in all-solid-state Li metal batteries (LMBs). However, vexing issues such as poor power performances and unstable interface layers are frequently observed. To address these issues, poly(vinylidene fluoride) (PVDF) with high dissociation of Li salts and good compatibility against Li metal are introduced into PCL to prepare blended CPEs. The PCL-PVDF blended CPEs obtain a high ionic conductivity of 1.38 × 10 -4 S·cm −1 and a high lithium ion transference number of 0.89 at 60 °C, owing to the high dissociation coming from the PVDF. Particularly, the Li//P5-CPEs-40 %//Li symmetrical battery can work steadily over 800 h at a high current density of 0.25 mA·cm −2 . Furthermore, the LiFePO 4 //P5-CPEs-40 %//Li batteries exhibit high capacity retention of 84.9 % for 500cycles at 3.0 C. The excellent cycling stability for the LMBs is considered to be originated from the LiF containg SEI layer that formed during cycling. This study provides new perspectives to develop new CPEs with high power performances and stable interface for LMBs.
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Materials Today Chemistry
·
2023
·
IF 7.3
C. Jiang,X. Wang,X. Xiao,M. Piao,Y. Jia,J. He,L. Hu,Y. Zou,L. Sun,L. Chen
Chemical complex borohydride is a promising hydrogen storage material due to its large gravimetric and volumetric hydrogen capacities. However, the high dehydrogenation temperature and sluggish kinetics still place strong restrictions on its practical application in the hydrogen storage field. In this work, a synergetic approach of partial cation substitution and catalysis is developed to enhance the hydrogen storage properties of LiBH 4 . The Li/Mg based dual-cation borohydride (LiMg 2 (BH 4 ) 5 , LMBH) was successfully synthesized by wet chemical ball milling of LiBH 4 and MgCl 2 . The optimal (LMBH (4.5:1) sample, LiBH 4 and MgCl 2 in molar ratios of 4.5:1, possesses a maximum hydrogen desorption capacity (11.27 wt%) and the outstanding initial decomposition temperature (∼250 °C). Importantly, the LMBH (4.5:1) doped with TiF 3 shows a remarkable onset dehydrogenation temperature as low as 97.2 °C, which is about 190 °C lower than that of pristine LiBH 4 . The LMBH (4.5:1) doped with TiF 3 system releases 7.98 wt% H 2 within 170 min below 350 °C. And the dehydrogenation product of doped composite can reversibly absorb ∼4.72 wt% H 2 at a relatively moderate temperature of 280 °C, which is substantially lower than the reversible hydrogen absorption temperature of previous modified borohydride systems. Based on the structural characteristic analyses, the TiF 3 reacts with LMBH (4.5:1) to in-situ form actual catalytic components of TiB 2 and TiH 2 as the actual catalysts for LMBH (4.5:1), resulting in the improved hydrogen re/dehydrogenation properties. The synergetic modification of Li/Mg dual-cation substitution and TiB 2 /TiH 2 catalysis may lead to the development of light-metal borohydrides with outstanding hydrogen storage properties.
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JOURNAL OF RARE EARTHS
·
2023
·
IF 4.9
Wei Zhang,Changjian Wang,Xusheng Qiao,Xianping Fan
The rapid development of phosphor-converted white light emitting diodes (pc-WLEDs) requires new red phosphors with efficient and thermally stable luminescence for high-quality warm-white lighting. However, it is still a challenge to discover red phosphors with facile synthesis, high internal quantum efficiency (IQE), excellent thermal stability and high color purity. Herein, a novel red-emitting Eu 3+ activated barium dialuminum digermanate (BaAl 2 Ge 2 O 8 , BAGO) phosphor showing strong red emission at 610 nm was prepared. The IQE is improved from 32.91% to 78.84% by employing a charge compensation strategy. The lithium-ion co-doped BAGO:Eu 3+ phosphor exhibits a nearly twofold increase in integral photoluminescence (PL) intensity and the high color purity reaches 94.17%. Impressively, the PL intensity of the BAGO:Eu 3+ ,Li + phosphor drops by only 2.6% at 150 °C of that at room temperature. Finally, the pc-WLED using the red BAGO:Eu 3+ ,Li + phosphor exhibits white light with the chromaticity coordinate of (0.3515, 0.3495), a high color-rendering index of 92 and a low correlated color temperature of 4746 K. All these results manifest that BAGO:Eu 3+ ,Li + phosphor is a suitable red phosphor for near-ultraviolet (NUV) chip-based pc-WLEDs.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Dexuan Pei,Ziying Liu,Rui Ma,Shuo Huang,Shuen Hou,Min Liu,Guozhong Cao,Hongyun Jin
Composite polymer electrolytes (CPEs) have shown extraordinary promise for use in all-solid-state lithium metal batteries (LMBs) because of their tunable merits in ionic conductivity and mechanical flexibility. Their practical application is however hindered by the poor interface stability and the uncontrollable Li dendrite formation. Addressing these two issues, we report an in-situ formed Li-Al-O interface layer between CPEs and Li metal anode by introducing Al 2 O 3 nanoparticles in CPEs. X-ray photoelectron spectroscopy results indicated that the CPE-Al 2 O 3 could slowly release Al atoms which react with Li metal to form the current Li-Al-O interface layer. We highlight that the Li-Al-O interface layer can stabilize lithium deposition/stripping over 1400 h in lithium symmetric batteries, and afford an impressive cycle life of 300 cycles in LiFePO 4 -Li batteries with almost no capacity loss. The present findings demonstrate that in-situ constructing a slow-release Li-Al-O interface layer is an easy and effective approach to stabilize the solid electrolyte interface and suppress the Li dendrites growth. Furthermore, the obtained batteries show excellent cycling stability, indicating the strategy with in-situ formed CPEs shed light on improving the processability of fabrication of high-performance electrolytes.
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Materials Today Bio
·
2024
·
IF 8.7
Yue Luo,Zhouyuan Yang,Xin Zhao,Donghai Li,Qianhao Li,Yang Wei,Luyao Wan,Meng Tian,Pengde Kang
Osteonecrosis is a devastating orthopedic disease in clinic that generally occurs in the femoral head associating with corticosteroid use up to 49 % in patients. In particular, glucocorticoids induced osteonecrosis of the femoral head is closely related to the local immune response that characterized by abnormal macrophage activation and inflammatory cell infiltration at the necrotic site, forming a pro-inflammatory microenvironment dominated by M1 macrophages, and thus leads to failure of bone repair and regeneration. Here, we report a bone regeneration strategy that constructs an immune regulatory biomaterial platform using an injectable thiolated hyaluronic acid hydrogel with lithium-doped nano-hydroxyapatite (Li-nHA@Gel) delivery for osteonecrosis treatment. Li-nHA@Gel achieved a sustain and longterm release of Li ions, which might enhance M2 macrophage polarization through the activation of the JAK1/STAT6/STAT3 signaling pathway, and the following induced pro-repair immune microenvironment mediated the enhancement of the osteogenic and angiogenic differentiation. Moreover, both in vitro and in vivo studies indicated that Li-nHA@Gel enhanced M2 macrophage polarization, osteogenesis, and angiogenesis, and thus promoted the bone and blood vessel formation. Taken together, this novel bone immunomodulatory biomaterial platform that promotes bone regeneration by enhancing M2 macrophage polarization, osteogenesis, and angiogenesis could be a promising strategy for osteonecrosis treatment.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Tianyuan Wang,Xinling Zhang,Ning Yuan,Chunwen Sun
Unstable electrolyte/electrode interface and uncontrolled Li dendrite growth hinder the large-scale commercial application of Li metal batteries. In this work, an artificial interfacial layer is developed to suppress the dendrite formation and the parasitic reactions between Li metal anode and electrolyte by the rational molecular design of a metal–organic framework material rich in fluorine (UiO-66(F)). The intrinsic nanochannels in UiO-66(F) promote the decomposition of lithium salts and limit the movement of anions. Moreover, the in situ formed LiF inhibits the Li dendrite growth. The composite electrolyte with the UiO-66(F) interfacial layer exhibits a wide electrochemical window (5.13 V vs Li/Li + ), high ionic conductivity (4.9 × 10 -4 S cm −1 ), and ionic transference number (0.51) at room temperature. XPS results demonstrate that the in situ formed solid-electrolyte interface (SEI) is attributed to the active F groups in UiO-66(F). The symmetric cell with the optimized interfacial layer achieves excellent cycling performance over 2200 h at 0.2 mA cm −2 . In addition, the assembled full cell LiFePO 4 ||Li also exhibits a capacity retention rate of 90.71 % after 960 cycles at 0.5 C. Even at higher rate of 2 C, it still exhibits a high discharge capacity of 139.6 mAh g −1 . This molecular design strategy for interfacial layer show great promise for practical applications of Li metal batteries.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Maoxia Yang,Shaomin Li,Gen Zhang,Mengjie Huang,Jidong Duan,Yanhua Cui,Bo Yue,Hao Liu
Succinonitrile (SN)-based electrolytes have a great potential for the practical application of all-solid-state lithium-metal batteries (ASSLMBs) due to their high room-temperature ionic conductivity, broad electrochemical window, and favorable thermal stability. Nevertheless, the poor mechanical strength and low stability toward Li metal hinder the further application of SN-based electrolytes to ASSLMBs. In this work, the LiNO3-assisted SN-based electrolytes are synthesized via an in situ thermal polymerization method. With this method, the mechanical problem is negligible, and the stability of the electrolyte enhances tremendously toward Li metal due to the addition of LiNO3. The LiNO3-assisted electrolytes exhibit a high ionic conductivity of 1.4 mS cm–1 at 25 °C, a wide electrochemical window (0–4.5 V vs Li+/Li), and excellent interfacial compatibility with Li (stable for over 2000 h at a current density of 0.1 mA cm–1). The LiFePO4/Li cells with the LiNO3-assisted electrolytes present significantly enhanced rate capability and cycling performance compared to the control group. NCM622/Li batteries also exhibit good cycling and rate performances with a voltage range of 3.0 to 4.4 V. Furthermore, ex situ SEM and XPS are employed. A compact interface is observed on Li anode after cycling, and the polymerization of SN is found to be suppressed. This paper will promote the development of practical application of SN-based ASSLMBs.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Shimin Chen,Junnan Han,Zhihuan Li,Zijie Lin,Min Wang,Hucheng Song,Xiaodong Pi,Dongke Li,Linwei Yu,Jun Xu,Kunji Chen
Lithium-carbon dioxide (Li-CO 2 ) batteries using high ion-conductive inorganic molten salt electrolytes, as a kind of promising carbon–neutral technology, have attracted much attention due to the high safety and high energy density. However, sluggish CO 2 reduction reaction (CO 2 RR) and evolution reaction (CO 2 ER) kinetics at cathodes make these batteries losing most of their capacity and power. Here, by engineering the carbon-free three-dimensional (3D) Cr-N-Ru catalysts on silicon nanopillars (Si NP) cathodes, we report a reversible solar photothermal (SPT) molten salt Li-CO 2 battery where solar energy can be efficiently harvested (over 90 % absorption rate from 300 nm to 2500 nm), concentrated and converted to heat. Theoretical simulations support that the 3D Cr-N-Ru catalysts exhibit lower energy barrier and more effectively catalyze the CO 2 RR and CO 2 ER process compared to individual Ru or CrN catalyst. The SPT Li-CO 2 battery shows a reversible cycle lifespan of 83 cycles with lower charge potential (3.2 V) and higher energy efficiency of 72 %, corresponding to ∼ 0.9 V potential gap, than the one using conventional Ru catalysts assembled on Si NP cathode. This battery technology paves the way for developing the next-generation safe and high-energy–density energy storage batteries with carbon–neutral effect.
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2022
·
IF 10.319
Yang Lin,Song He,Zhiyong Ouyang,Jianchao Li,Jie Zhao,Yanhe Xiao,Shuijin Lei,Baochang Cheng
Hierarchical porous carbon co-doped with heterogeneous atoms has attracted much attention thanks to sizable internal void space accommodating electrolyte, high-density microporous structure physically confining polysulfides (LPS), and heterogeneous atoms serving as active sites to capture LPS. However, solely relying on carbon material defects to capture LPS proves ineffective. Hence, metal compounds must be introduced to chemisorb LPS. Herein, cobalt ions are in-situ grown on the polydopamine layer coated on the surface of biomass-derived S, N, P co-doped hierarchical porous carbon (SNP-PC). Then a layer of nitrogen-doped porous carbon (MPC) dotted with CoSe nanoparticles is acquired by selenizing. Thus, a strong-polar/weak-polar composite material of SNP-PC studded with CoSe nanoparticles is obtained (SNP-PC@MPC@CoSe). Button cells assembled with SNP-PC@MPC@CoSe-modified separator enable superb long-cycle stability and satisfactory rate performance. An excellent rate capacity of 796 mAh g −1 at a high current rate of 4 C with an ultra-low capacity fading of 0.06% over 700 cycles can be acquired. More impressively, even in a harsh test condition of 5.65 mg cm −2 sulfur loading and 4 μL mg −1 ratio of electrolyte to active materials, the battery can still display a specific capacity of 980 mAh g −1 (area capacity of ∼5.54 mAh cm −2 ) at 0.1 C. This work provides a promising route toward high-performance Li-S batteries.
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INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Qiang Zhang,Ranxiao Ao,Ruijie Gao,Huaming Yang
Transition metals with 3d unoccupied orbitals have superior catalytic activity, but inherent high spin suppresses their adsorption capability, leading to sluggish polysulfide conversion kinetics for Li–S batteries. Herein, we provide Fe–O–Si bridge bonds to manipulate eg filling and induce a high-to-medium spin transition of Fe3+ sites, which enhances polysulfide adsorption and facilitates sulfur redox reaction kinetics. The resultant cathodes exhibit outstanding performances under high sulfur loading, which can deliver a high battery specific energy of 1061 mA h·g–1 even after 100 cycles in Li–S pouch batteries. This work provides new insights into the kinetic and multi-step conversion mechanism of the sulfur redox reaction process, helping in the understanding and design of spin-dependent catalysts.
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高影响因子
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