Advanced Energy Materials
·
2024
·Vol. 14
·期 27
·2401221
·
IF 24.4
Chengyi Lu,Lei Liu,Song He,Boxin Li,Zhuzhu Du,Hongfang Du,Xuefei Wang,Shaowei Zhang,Wei Ai
The search for advanced electrode materials to solve slow ion diffusion and poor conductivity issues has spurred the development of fast-charging sodium-ion batteries (SIBs). Herein, a 2D metallic anode, KCu 4 S 3 , is reported expertly crafted using a KSCN molten salt approach, laying the foundation for fast-charging SIBs. It is found that the mixed metal-valence states within this compound provide substantial advantages, particularly in enhancing the high-rate capability and ensuring long-term durability. The mechanism that appears to facilitate these benefits can be traced to the formation of NaCu 2 S 2 intermediate, which assist in electron transfer during Na + (de)intercalation. In situ observations confirm the sodiation products of NaCu 2 S 2 and sodium polysulfide can recover to the original phase upon desodiation. Such distinctive characteristics endow KCu 4 S 3 with remarkable electrochemical performances, including an impressive capacity of 355 mAh g −1 at 20 A g −1 and 100% capacity retention within 3000 cycles. Moreover, the full cell exhibits a high energy density of 332 Wh kg −1 and retains 92% of its capacity across 150 cycles at 1 A g −1 . This work opens new horizons in the field of fast-charging materials, making a significant step forward in shaping the future of SIBs.
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
ENERGY & FUELS
·
2023
·
IF 5.3
Yuqing Gao,Xiaobo Chen,Xing Zhao,Lin Lan,Jun Zhang,Yao Cheng,Qiang Ru
A facile fabricating tactic of high-energy ball milling coupled with cold quenching is adopted to design an amorphous Se4P4/graphene (Se4P4/G) hybrid anode for potassium ion batteries (PIBs). Benefiting from the promoted electron transfer and effective volume constraint caused by the graphene matrix, the novel Se4P4/G anode realized a prominent K-storage and long-time durability, such as a high initial capacity of 931.23/870.3 mAh g–1 at 50 mAh g–1, and sustainable capacity of 296.67/293.33 mAh g–1 at 1 A g–1 for 1800 cycles. DFT theoretical calculation revealed that the Se4P4/G interface could facilitate the electron transfer and reduce the band gap, which boosted the potassium storage. The Se4P4/G with high efficient storage and long-term durability would be one of the attractive anode materials for PIBs, and ongoing efforts are currently directed to commercialize scientific research, which provides a new idea to yield the high-power potassium phosphide for PIBs in the future.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Pharmaceutics
·
2021
·Vol. 13
·期 8
·1235
·
IF 6.321
Yanyan Li,Shuyao Ruan,Zhi Wang,Nianping Feng,Yongtai Zhang
Melittin is a promising antitumor substance; however, it is a nonspecific cytolytic peptide, which limits its clinical application. In this study, melittin liposomes (Mel-Lip) and hyaluronic acid (HA)-modified Mel-Lip (Mel-HA-Lip) were designed to reduce the toxicity and increase the anti-tumor effects of melittin. The optimal preparation procedure was evaluated using a uniform design based on the single factor method, and the concentration of HA was determined based on the cellular uptake of coumarin 6 labeled HA-Lip. Liposomes and HA-modified liposomes were evaluated in vitro by assessing cytotoxicity, cellular uptake, and release behavior. Liposomes prepared in the optimum formulation improved stability, with a particle size of 132.7 ± 1.55 nm, zeta potential of −11.5 ± 1.51 mV, entrapment efficiency of 86.25 ± 1.28%, and drug-loading efficiency of 3.91 ± 0.49%. Cellular uptake tests revealed that the uptake of nanoparticles significantly increased with HA modification, suggesting that HA modification enhanced the internalization of liposomes within cells, which was consistent with the results of the cytotoxicity analysis. Furthermore, in vitro release experiments showed that Mel-HA-Lip possessed a stronger sustained-release effect compared with Mel-Lip. The results of this experiment provide insight into the potential tumor-targeting effects of melittin.Keywords:nanoparticle;active targeting;anti-tumor;nanomedicine;prolonged circulation
研究领域:
药学
·
肿瘤学
·
生物材料学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy Storage Materials
·
2023
·
IF 20.4
Yu Wu,Wenjie Zhang,Yalun Li,Xuning Feng,Zhuang Ma,Dongsheng Ren,Languang Lu,Gui-Liang Xu,Khalil Amine,Minggao Ouyang
Ethylene carbonate (EC) plays a crucial role in current electrolytes for batteries . However, EC reacts exothermically with the electrode to trigger thermal runaway and undergoes continuous oxidative decomposition at high voltages, hindering it application for next-generation batteries . Here we report a simple and effective strategy to design sulfolane(SL)-based electrolyte with reshaped anions-dominated solvation structure, forming highly stable inorganic-dominated electrode-electrolyte interphases that efficiently stabilize nickel-rich cathode and graphite anode. Compared with the conventional electrolyte, practical pouch-type LiNi 0.8 Co 0.1 Mn 0.1 O 2 |Graphite cell with SL-based electrolyte significantly improve self-generated heat T 1 and thermal runaway triggering T 2 by 9.6 and 42.0 °C, respectively. More surprisingly, the pouch cell with SL-based electrolyte exhibits outstanding capacity retention of 88 % after 1000 cycles charged up to 4.5 V. The study brings new insights for unlocking advanced electrolyte candidates to build next-generation practical safer high-energy batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SURFACTANTS AND DETERGENTS
·
2022
·Vol. 25
·期 5
·643-654
·
IF 1.972
Yu Zhao,Chenyu Liu,Hailiang Chen,Hengjun Zhou,Simiao Yu,Deze Mi,Shuli Yue,Weihong Qiao
Liposomes are the predominant drug delivery system widely used in the pharmaceutical industry, but rapid clearance and endosome degradation are the main barriers to improve the delivery efficiency of liposomes, especially for protein or genes. Simulating viral membrane fusion peptides, four asymmetrically dihydrophobic chain polyethylene glycol (PEG) lipids with long circulating and membrane fusion properties have been designed and synthesized with a high yield. The structure of synthetic PEG lipids is characterized by 1 H NMR and mass spectrometry. The critical micelle concentrations of PEG lipids are lower by one or two orders of magnitude compared with traditional surfactants such as SDBS or SDS, which show excellent self-assembly performance of lipids. The size and morphology of liposomes constituted with neutral lipid DOPC and PEG lipid are characterized by dynamic light scattering (DLS) and transmission electron microscopy (TEM). In the conditions of 50% ethanol and 5–25 mmol L −1 Ca 2+ , the PEG neutral lipid complexes encapsulated pEGFP are almost neutral with a diameter below 300 nm.
研究领域:
药学
·
生物化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2018
·Vol. 28
·期 29
·1801989
·
IF 13.325
Lei Liu,Yu Chen,Yihao Xie,Peng Tao,Qinyi Li,Chenglin Yan
Carbon-based materials are considered to be one of the most promising materials for negative electrodes of the future, because of their good chemical stability, high electrical conductivity, and environmental benignity. However, to date, the underlying principles of K-ion storage in carbonaceous anodes remain elusive, which greatly hinders the development of such a category of anodes. Herein, the ultrastable K-ion storage of carbonaceous anode through systematic analyses, including comprehensive electrochemical characterizations, kinetics calculations, and structural/compositional evolution mechanism studies, is theoretically elucidated and experimentally verified. Specifically, it is found that the uniquely envelope-like nitrogen-doped carbon nanosheets with high pseudocapacitive could bring ultrastable storage of potassium ions, delivering a high initial reversible capacity of 367 mAh g −1 at a current density of 50 mA g −1 and retain 70.5 and 75.6% at current densities of 500 and 1000 mA g −1 after 1000th cycle, respectively. This study could enlighten researchers on further progress in the field of carbonaceous K-ion battery negative electrode with a long cycle life.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Zhongzheng Qin,Xin Zhou,Yongyuan Hu,Jian Pei,Gang Chen
V 2 O 3 is a promising candidate for sodium-ion batteries (SIBs) anode. Compared with common rhombohedral V 2 O 3 , cubic V 2 O 3 is a unique metastable phase with ordered oxygen vacancies and high energy state, but lacks study in the field of electrochemical energy storage. Herein, a metastable cubic V 2 O 3 embedded in N-doped carbon nanosheets (c-V 2 O 3 @NC) is synthesized by a simple molten salt method with urea assisted. Ab initio molecular dynamics calculations demonstrate that cubic V 2 O 3 possesses reduced Na + diffusion activation energy. Benefiting from the novel metastable structure and multiple modifications, the c-V 2 O 3 @NC shows enhanced ion diffusion kinetics, robust structure and improved conductivity. As a consequence, the c-V 2 O 3 @NC exhibits high specific capacity, ultralong cycle life and ultrahigh rate capability (274 mAh g −1 even after 3000 cycles at 5 A g −1 ) as anode material for SIBs. This work shows a feasible synthesis and synchronous modification for metastable materials to electrical energy storage applications.
研究领域:
材料科学
·
电化学能源存储
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Yangyang Wang,Xue Wang,Bingcheng Ge,Jianxin Guo,Carlos Fernandez,Qiuming Peng
The Li–CO2 battery is a potential energy storage device that not only possesses a theoretical energy density as high as 1876 W h kg–1 but also alleviates the consumption of fossil resources by converting the greenhouse gas CO2 into electric energy. However, some technique bottlenecks, such as high overpotential, low recyclability, and low energy density, severely prohibit its application rhythm. Here, we prepare a binder-free MXene–MnO2 composite film using vacuum-assisted filtration and in situ reduction, which can be used as a freestanding cathode for Li–CO2 batteries. This MXene–MnO2 film electrode bestows good cycle stability (∼220 cycles), high specific capacity, and lower overpotential (∼0.89 V) in Li–CO2 batteries. Both experimental tests and first-principles calculations reveal that the enhanced electrochemical properties are associated with three aspects. First, the MXene–MnO2 film offers a high electrical conductivity and porous structure, which provide fast transport channels for electrons and ions. Then, the replacement of Mn by Ti increases the adsorption of Li ions, which facilitates the rapid decomposition of Li2CO3. Finally, the synergistic effect of MXene and MnO2 exposes a large number of active sites, which increases the capacity of Li–CO2 batteries. Therefore, this self-supporting strategy on the MXene composite paves a way to develop high-performance Li–CO2 batteries.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-8
·
IF 15.7
Sun Wenlu,He Yulu,Fang Lei,Zeng Jinrong,Tang Enli,Hu Tingping,Zhang Hui,Lu Derong,Hu Chenji,Quan Zhilong,Kong Huabin,Chen Hongwei
Enhancing the durability of electrodes under high-power conditions is crucial for advancing high-power secondary batteries. Despite numerous optimization strategies proposed to mitigate electrode structural degradation, the performance of common electrodes inevitably deteriorates under high currents over extended cycling life. In this study, we report a capacity refreshing strategy for a porous organic framework electrode operating under high power conditions. By intermittently applying low currents, deactivated ions trapped within the framework can be effectively released, thus refreshing the electrode’s capacity. Importantly, this capacity refreshing can be periodically repeated. The framework electrode thus achieves an extended cycle life of over 60,000 cycles at 20 C (6 A/g) with a specific power of 28 kW/kg (based on active material). This strategy represents an alternative concept for designing organic electrodes that combine high power and long cycle life.
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 COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Gangyong Li,Siping Li,Zhi Li,Chen Li,Zhaodi Wang,Huan Li,Rui Chen,Miao Zhou,Bao Zhang,Zhaohui Hou
Rechargeable aluminum batteries (RABs) are promising alternatives to lithium-ion batteries in large-scale energy storage applications owing to the abundance of their raw materials and high safety. However, achieving high energy density and long cycling life simultaneously holds great challenges for RABs, especially for high capacity transition metal selenide (TMS)-based positive materials suffering from structural collapse and dissolution in acidic ionic liquid electrolyte. Herein, Se-doped carbon encapsulated Cu 2 Se with yolk-shell structure (YS/Se-C@Cu 2 Se) is rationally constructed to address such issues. Electrochemical and spectroscopic analyses as well as density functional theory calculations show that the highly conductive Se–C shell enhances the electrochemical reaction kinetics of the electrode and provides strong adsorption for the soluble Cu and Se species. Benefiting from these merits, the optimal YS/Se-C@Cu 2 Se cathode manifests a high specific capacity of 1024.2 mAh/g at 0.2 A/g, a superior rate capability of 240.5 mAh/g at 3.2 A/g, and a long-term cycling stability over 2500 cycles. This work offers a feasible approach to the design and construction of low-cost and efficient TMS-based positive materials for realizing practically usable RABs.
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
ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Wangqiong Xu,Beituo Liu,Shubiao Xia,Lijuan Chen,Ruijuan Qi,Qiling Li,Shimei Guo,Feixiang Cheng,Rong Huang,Zhe Li
Mo doping plays a striking role in the stability enhancement of LiMn 2 O 4 cathode materials. However, the underlying microscopic mechanism is still unclear. Here, we elucidate that the relationship between the atomic position of Mo doping in LiMn 2 O 4 and the stability enhancement of Mo-doped LiMn 2 O 4 by utilizing the spherical aberration-corrected scanning transmission electron microscopy (Cs-STEM). It exhibits that the part of Mo 6+ ions occupy empty Mn 16c site to form a surface reconstructed layer of rock-salt like phase on the outermost surface and other Mo 6+ ions dope into the Mn octahedral 16d sites to form LiMo x Mn 2-x O 4 in bulk, which is beneficial for inhibiting the parasitic side reactions. Concomitantly, this dual modification of bulk structure and surface can significantly enhance electrode reversibility and Li + diffusion. As a result, excellent long cycling stability of the as-designed optimal LiMo 0.01 Mn 1.99 O 4 after 1500 cycles with 61.61 % capacity retention at 10 C (1 C = 148 mAh g −1 ) is presented, with an initial discharge capacity of 88.30 mAh g −1 . Our research provides a clever approach for regulating the surface structure/bulk architecture in LiMn 2 O 4 cathode materials.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2014
·
IF 4.086
Zhimin Ren,Zhiyu Wang,Chao Chen,Jia Wang,Xinxin Fu,Chenyao Fan,Guodong Qian
ABSTRACT In this paper we report a novel architecture of three-dimension (3D) carbon framework to encapsulate tetrahedron ZnO nanocrystals that serves as an anode material for lithium-ion batteries (LIBs). The ZnO@C composites are prepared via a simple internal-reflux method combined with subsequent calcination in argon. The amorphous carbon is formed on the surface of the ZnO crystals by in situ carbonization of the surfactant, which leads to a strong connection between the carbon framework and the active materials and guarantees faster charge transfer on the electrode. The ZnO crystal calcined at 500°C (ZnO@C-5) possesses regular tetrahedron shape with a side length of 150-200 nm and all of them are uniformly anchored among the network of amorphous carbon. The developed ZnO@C structures not only improve the electronic conductivity of the electrode, but they also offer a larger volume expansion of ZnO during cycling. As a result, the ZnO@C-5 demonstrates a higher reversible capacity, ultralong cycle life and better rate capability than that of the ZnO@C-7 and pure ZnO crystals. After 300 cycles, the ZnO@C-5 demonstrates a high capacity of 518 mAhg −1 at a current density of 110.7 mAg −1 . Moreover, this simple approach prepared the 3D composites architecture could shed light on the design and synthesis of other transition metal oxides for energy storage.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）