APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Junyu Xiao,Zhengxiang Zhu,Guoqiang Zhang,Haoyu Li,Yongliang Li,Xiangzhong Ren,Peixin Zhang,Hongwei Mi
To solve the low conductivity and huge volume change of cobalt-based anode, the tuneable Co 3 O 4 structure is constructed through a template-free hydrothermal strategy and calcination under different atmosphere. Multi-shelled Co 3 O 4 (MS-Co 3 O 4 ) and pomegranate-like Co 3 O 4 encapsulated in carbon (CS-Co 3 O 4 @C) are fabricated from the same micron-sized cobalt-based polymeric precursor. MS-Co 3 O 4 manifests a capacity of 1195 mAh·g −1 at a current density of 200 mA·g −1 and delivers an initial coulombic efficiency (ICE) of 80.3%. In addition, CS-Co 3 O 4 @C delivers a reversible capacity as high as 676 mAh·g −1 at 2000 mA·g −1 after 500 cycles. Such high capacity, remarkable cycling and rate performances are attributed to hollow multi-shelled structure and carbon network skeleton, which promote the initial coulombic efficiency, relieve volume change and facilitate the migration of Li-ion.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2019
·
IF 3.683
Yunfei Chang,Yuze Li,Chen Zhang,Tongyao Zhao,Xiaohang Tuo,Jing Guo,Yumei Gong
We developed a facile one-pot method to synthesize multishelled hollow mesoporous SiO2 microspheres (HMSs) with controllable interior structures including one-shell, double-shell, and yolk–shell. Single reagent formaldehyde could fully control the morphology of HMSs, in that formaldehyde was crucial to the SiO2 precursor’s hydrolysis rate and the template pore size.
研究领域:
材料科学
·
纳米医学
·
药物递送
·
生物材料
·
纳米技术
✓ 已验证
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2023
·
IF 8.7
Xiaoyin Cao,Jia Zhang,Ruijuan Fu,Jiyan Li,Zhaoqi Zhu,Hanxue Sun,Weidong Liang,An Li
The development of shape-stable composite phase change materials (CPCMs) with outstanding light absorption and light-to thermal conversion performance is of great significant for harvesting and converting solar energy. Herein, we proposed a novel shape-stable composite phase change membrane based on multi-shelled hollow spheres (MHS) via a facile method. The MHS was fabricated by hydrothermal reaction and calcination treatment, and membrane was directly coated on glass plates after bonding the MHS. The as-resulted membranes possess excellent tensile strength , superior light absorption and light-to thermal conversion efficiency. The tensile strength of the membrane based MHS loaded 1-Hexadecylamine (HDA) can reach to 1.01 MPa. The light absorption of the membrane is about 93% under 1sun irradiation, and the photothermal conversion efficiency of the membrane is 81.4%. Moreover, the electro-to thermal conversion and heat dissipation of the membrane based CPCM were investigated. The results demonstrate that this membrane-based CPCM can not only be applied in solar energy capture, storage and conversion, but also has the prospect of being applied in the fields of electro-to thermal conversion and heat dissipation.
研究领域:
材料科学
·
能源工程
·
纳米技术
✓ 已验证
DOI
高影响因子
Sustainable Energy & Fuels
·
2017
·Vol. 1
·期 9
·1944-1949
·
IF 0
Sheng Huang,Chao Meng,Min Xiao,Shan Ren,Shuanjin Wang,Dongmei Han,Yuning Li,Yuezhong Meng
Tin phosphide (Sn4P3) combined with the good conductivity of tin (Sn) and high capacity of phosphorus has been reported to be a potential anode material for the sodium ion battery (SIB). However, the preparation of Sn4P3 is limited to ball-milling and compositing with carbon materials. The novel and detailed structure of Sn4P3 itself has so far not been revealed. In this research, the multi-shell Sn4P3 nano-structure was obtained, for the first time, using a simple and general low temperature solvothermal method. The multi-shell structure with a larger specific surface area and interlayer space endows this new anode material with a short cut pathway for sodium ion diffusion and a buffer space for volume expansion during sodiation, thus avoiding electrode pulverization and improving the cycling performance of the SIB. The as-prepared multi-shell Sn4P3 delivers an excellent specific capacity of 770 mAh g−1 with capacity retention of 96% after 50 cycles at the current density of 50 mA g−1, demonstrating the superiority of structure optimization in SIB anode preparation.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
无机化学
✓ 已验证
DOI
SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Liyong Du,Jing Pan,Qing Dong,Yi Liu,Heming Sun
Multi-shelled hollow structures have been drawing wide attention in various fields because of their large surface area , short diffusion path and less agglomerated configuration. Herein, ZnSnO 3 hollow microspheres with controllable shell numbers have been prepared by a facile solvothermal reaction and following annealing treatment. The test results show that multi-shelled ZnSnO 3 hollow microspheres exhibit excellent acetone sensing performance, which is superior than that of double-shelled samples. In particular, multi-shelled ZnSnO 3 hollow microspheres not only show high responses of 105.1 and rapid response/recovery speed (1/18 s) to 100 ppm acetone, but also exhibit good repeatability, long-term stability and anti-humidity properties. Furthermore, they can easily distinguish healthy breath from simulated diabetic breath. And they still show rapid response/recovery speed in actual breath detection, which is beneficial to the achievement of real-time detection. The enhanced sensing performance has been studied systematically. Thus, multi-shelled ZnSnO 3 hollow microspheres have a great potential for the diagnosis of diabetes.
研究领域:
材料科学
·
生物医学工程
·
传感器技术
·
纳米医学
·
转化医学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Lei Liu,Zijian Zhou,Ying Liu,Xin Yu,Dunxi Yu,Minghou Xu
The development of efficient non-noble metal catalysts for low-energy, high-safety hydrolysis of ammonia borane (AB) is critical to advancing hydrogen generation technologies. Current catalysts face two main challenges: sluggish diffusion and competitive activation of liquid-phase molecules (H2O and AB) on single metal sites, causing low efficiency. To address these limitations, we adopt two strategies: (1) the fabrication of multi-shell hollow sphere architectures to minimize reactant diffusion pathways and (2) the integration of dual reaction sites to decouple the activation of reactants. This study diverges from trial-and-error experimentation by employing integrated theoretical and experimental methodologies. Theoretical modeling shows that optimal shell thicknesses are below 0.98 and 12.49 µm for AB and H2O, respectively. We selected Zn, Mn, Ni, and Cu from seven common metal oxides as secondary reaction sites for Co3O4 catalysts based on their affinity for reactants. Experiments revealed that the multi-shell structure increased the catalyst's specific surface area from 25 to 98.26 m2 g−1, reducing reactant diffusion distance. Dual reaction sites enabled selective activation of reactants, with activity order Cu > Ni > Mn > Zn for modified Co3O4 catalysts. Enhanced catalytic performance correlates with improved charge localization and electron transfer, lowering H2O and AB dissociation energy barriers by 8-fold and 1.5-fold, respectively. Reactant binding energies align linearly with the catalyst's d-band center, and catalytic activity shows a volcano-shaped correlation with dopant-induced d-band center shifts, consistent with the Sabatier principle. The optimal dopant d-band center is between −1.4 and −1.8 eV. In general, this work offers a design reference for mass transfer and chemical reaction enhancement of AB hydrolysis catalysts.
研究领域:
材料化学
·
催化化学
·
纳米科技
·
能源化学
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Fengdong Qu,Wenan Shang,Dongting Wang,Shiyu Du,Tiju Thomas,Shengping Ruan,Minghui Yang
Multishell, stable, porous metal-oxide microspheres (Ni–Co oxides, Co3O4 and NiO) have been synthesized through the amorphous coordination polymer-based self-templated method. Both oxides of Ni and Co show poor selectivity to xylene, but the composite phase has substantial selectivity (e.g., Sxylene/Sethanol = 2.69) and remarkable sensitivity (11.5–5 ppm xylene at 255 °C). The short response and recovery times (6 and 9 s), excellent humidity-resistance performance (with coefficient of variation = 11.4%), good cyclability, and long-term stability (sensitivity attenuation of ∼9.5% after 30 days and stable sensitivity thereafter) all show that this composite is a competitive solution to the problem of xylene sensing. The sensing performances are evidently due to the high specific surface area and the nano-heterostructure in the composite phase.
研究领域:
材料科学
·
化学传感器
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Xiaoyin Cao,Lijuan Yang,Jia Zhang,Zhaoqi Zhu,Jiyan Li,Hanxue Sun,Weidong Liang,An Li
The fabrication of composite phase change materials (CPCMs) is significant for harvesting and converting solar energy. Hence, we first report novel CPCMs based on inorganic multi-shelled hollow spheres (MHS) via a facile hydrothermal method and calcination treatment. 1-Hexadecylamine (HDA) and Octadecylamine (ODA) were incorporated into MHS by a simple impregnation treatment to prepare CPCMs. Owing to its multi-shelled structure, the CPCMs have an outstanding ability of leakage resistance . In addition, the CPCMs themselves exhibit excellent solar absorption of up to 80 % without further surface modification. The thermal conductivity of the CPCMs containing HDA and ODA was increased by 1.03 times and 1.67 times by comparison with that of pure PCMs. The enthalpy of the as-resulted CPCMs is 207.6 J/g and 151.5 J/g, which is higher than most existing CPCMs, and the enthalpy of the CPCMs containing HDA and ODA after 100 times cycles can still attain 110.9 J/g and 104.7 J/g. Under 1sun irradiation, the light-to-thermal conversion efficiency of the CPCMs containing HDA and ODA was measured to be 90.0 % and 92.1 %, respectively. Taking advantage of its inherently physicochemical stability, superior light absorption and thermal conductivity and leakage resistance , scalable and cost-efficient fabrication process, such MHS-based CPCMs may have great potential for a wide variety of applications such as photothermal conversion, solar energy harvesting and storage, and so on.
研究领域:
材料科学
·
能源材料
·
太阳能转换
·
热管理
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）