Biomedical Materials
·
2025
·
IF 3.7
Jianfeng Chen,Chuan Li,Xiaoxiao Chen,Kui Zhou,Hanjing Li,Kai Peng,Yang Yinong,Yichuan Dai,Ben Huang
The articular cartilage is characterized by its gradient hierarchical structure, which exhibits excellent lubrication and robust load-bearing properties. However, its inherent difficulty in self-repair after damage presents numerous formidable challenges for cartilage repair. Inspired by the unique structure of articular cartilage, a biomimetic bilayer hydrogel composed of PAM (polyacrylamide) and PAM/SA (sodium alginate) is prepared using a two-step in-situ swelling method. The bilayer hydrogel demonstrates exceptional structural stability due to the interlayer in-situ chemical cross-linking. Compared to monolayer hydrogels, the PAM-PAM/SA bilayer hydrogel demonstrates superior mechanical attributes, exhibiting a compressive strength of 1 MPa and a compressive modulus of 0.22 MPa. Furthermore, exploration of the tribological performance of the PAM-PAM/SA bilayer hydrogel have revealed its low-friction performance under high loads, with a coefficient of friction as low as 0.032. Finally, leveraging the differential swelling properties between the distinct layers of the PAM-PAM/SA bilayer hydrogel, a self-bending biomimetic cartilage capable of conforming to complex joint surfaces is fabricated. This highly lubricating, mechanically robust, and conformal biomimetic cartilage provides an effective means for addressing cartilage defects and joint diseases.
研究领域:
生物材料学
·
组织工程学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yehong Du,Xinyu Wang,Yan Zhang,Haibang Zhang,Jianzong Man,Kun Liu,Juncai Sun
Rechargeable zinc-ion batteries (ZIBs) have shown significant promise as alternative battery technology due to their environmental benignity and cost-effectiveness. However, the current development of ZIB cathode is still hindered by various challenges such as less-than-ideal capacity, poor cyclic performance, and the typical use of low mass loading during battery evaluation. Here we prepared a nanosheet-assembled compact CaV 4 O 9 microflowers/carbon nanotubes (CaVO/CNTs) composite film via a facile spray printing technique. The resultant CaVO/CNTs composite film possessed extremely short ion diffusion pathways, excellent electrical conductivity, and superior structural stability. At a high mass loading of 50 mg cm −2 , the as-fabricated electrode could attain an areal capacity of 10.5 mAh cm −2 . Furthermore, CaVO/CNTs underwent phase transformation during the initial charging process to form amorphous V 2 O 5 ·nH 2 O, which could provide more active sites for Zn 2+ storage. As a result, CaVO/CNTs electrode was able to deliver 410 mAh g −1 at 0.1 A g −1 , high-rate performance (270 mAh g −1 at 10 A g −1 ), and ultra-long cyclic life of 91% retention after 3000 cycles. Since CaVO/CNTs film possessed good flexibility and excellent electrical conductivity, a flexible soft-packaged ZIB was assembled based on this film, and it was able to exhibit consistent electrochemical properties under various bending states.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Congming Li,Xiangming Li,Qingzhen Yang,Lifeng Wu,Chao Wang,Hongmiao Tian,Chunhui Wang,Xiaoliang Chen,Jinyou Shao
High charge rate and high mass loading ability are of practical importance for high power and high volumetric performance supercapacitors but are always challenged by tortuous and sluggish ion diffusion in thick electrodes. Here, inspired by the hepatic vascular system, hierarchical 3D electrolyte networks are proposed to facilitate ion diffusion across laminar graphene films, resulting in a 14-fold improved ion diffusion coefficient, better rate ability, and high mass loading ability for graphene supercapacitors. Such design enables graphene electrodes with high capacitance up to 236 F g −1 , packing densities of 0.67–0.78 g cm −3 depending on structures; and core stack with 10 mg cm −2 mass loading exhibits a high energy density of 45.4 Wh L −1 , which is among the state-of-the-art graphene supercapacitors. This study provides a comprehensive investigation of structure-related capacitive properties, guiding electrode design for high-rate and high-mass-loading graphene supercapacitors. Moreover, such design also benefits solid-state graphene supercapacitors by forming 3D gel electrolyte structures, which enable higher capacitance and better mechanical robustness, showing potential for flexible energy storage.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2021
·
IF 17.789
Yong Wang,Hui Xu,Xi Chen,Hong Jin,Jiping Wang
Binders play an important role in preserving the mechanical stability of electrodes. Nevertheless, the typical binders normally are not stretchable to withstand a repeated large volume change, which are not suitable for high-loading silicon anodes. Herein, inspired by the natural parthenocissus, an elastic self-healing CA-PAA binder is designed for silicon anode to implement long-terms stable cycling. The multiple hydrogen bonds formed by in-situ cross-linking of water soluble citric acid (CA) and poly (acrylic acid) (PAA) can establish a reversible network for silicon particles. The CA molecule not only serves as the protecting buffer layer to release the inner stress and stabilize the solid electrolyte interface (SEI), but it can also connect with PAA to form a “inner flexibility and outer rigidity” spatial topology. Consequently, this self-healing binder enhanced silicon anode exhibits an excellent performance on accommodating the large volume change during cycling process. As expected, the silicon anode shows an impressive initial areal capacity of 6.5 mAh cm −2 , 78% capacity retention after 50 cycles with a high mass loading of 1.8 mg cm −2 , and an initial Coulombic efficiency of 89.5%. Meanwhile, the Si||NCM 811 full cell shows 74% capacity retention after 100 cycles with a reversible capacity of 1.7 mAh cm −2 .
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Ze-Wei Wu,Jing Xiong,Cun-Wen Wang,Yuan-Hang Qin
Although supported Ni is generally considered the most active non-noble metal catalyst for decomposing NH 3 to produce CO x -free H 2 , its activity is not sufficient. Herein, supporting high-loading Ni on SBA-15 is explored to alleviate the low intrinsic activity issue of Ni. SBA-15 supports with tunable textual properties are synthesized to support Ni catalyst for NH 3 decomposition. Characterization shows that Ni catalyst with a loading close to 40 wt% supported on SBA-15 with the largest specific surface area (Ni/SBA-15-80) exhibits a NH 3 decomposition performance much better than those reported on other Ni-based NH 3 decomposition catalysts, resulting from its favorable textural properties and high Ni loading. In addition, Ni/SBA-15-80 shows excellent catalytic stability, with no activity degradation over an 80-h NH 3 decomposition test. This work reveals the importance of textural properties of support and Ni loading to NH 3 decomposition performance and can provide a new idea for synthesizing high-performance NH 3 decomposition catalysts.
研究领域:
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
Energy Storage Materials
·
2020
·
IF 16.28
Sha Li,Pan Xu,Muhammad Kashif Aslam,Changguo Chen,Arif Rashid,Gulian Wang,Li Zhang,Bingwei Mao
Li–S batteries have received unprecedented attention owing to their exceptionally high energy density and low cost. Nevertheless, the daunting challenges of insulating properties, soluble polysulfide shuttling, drastic volume change and sluggish polysulfide conversion kinetics, still hinder their application towards commercialization . Very recently, exciting progresses have been made on inorganic/organic polar hosts as either polysulfide immobilizers or polysulfide redox accelerators, targeting durable Li–S batteries. Herein, self-assembled NiCo 2 S 4 granules comprising secondary open-hole tubular structures are first devised as highly-efficient host materials for high-sulfur-loading and durable Li–S batteries. NiCo 2 S 4 hosts are featured with their large porosity, high electronic conductivity , rapid ion conduction, strong polysulfide immobilization capability and catalytic effect on polysulfide redox, thus greatly ameliorating the polysulfide-shuttle issue and accelerating the polysulfide conversion kinetics. Therefore, the NiCo 2 S 4 /S cathode shows a reversible capacity of 1387 mAh g −1 at 0.2C and retains a value of 543 mAh g −1 after 500 cycles at 2 C. Impressively, the NiCo 2 S 4 /S cathode with a sulfur loading of 8.9 mg cm −2 exhibits high areal capacity of 8.3 mAh cm −2 , low polarization and high cycling stability. Moreover, the as-derived soft-package battery with a 4.5 mg cm −2 sulfur loading can power 169 light-emitting diodes, verifying its great potential for practical application.
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 COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Rongrong Si,Honggang Luo,Junwen Pu
Wood-conducting polymer materials have been widely used as supercapacitor electrode; however, it remains challenging to achieve a simple method to improve the homogeneity of the conductive material on wood and to reach high mass loading. Herein, a novel “pore-making, active substance-filling, densification (dissolution, in-situ polymerization of polyaniline (PANI), self-shrinking)” strategy is proposed for the preparation of wood electrodes with a high mass loading (41.4 wt%) and homogeneity. Ingeniously, ZnCl 2 as a dissolving agent and pore-making agent to treat delignified wood can generate more pores on the wood, which is more conducive to the penetration of aniline small molecules, besides, the dissolved fine fibers can be entangled with more PANI, which can improve the loading and homogeneity of PANI. After drying treatment, there will be shrinkage again, playing a certain physical densification effect on the large lumen. The optical electrode was RWP2 showing high electrochemical performance (2328.9 mF/cm 2 , 1 mA/cm 2 ), and stability (5000 cycles, 89.3 %). Moving forward, the RWP2//RWP2 SSC showed an excellent energy density of 164.24 μwh/cm 2 at a power density of 250 μw/cm 2 . Remarkably, the simple and versatile strategy of designing wood-based materials with high mass loading provides new research ideas for realizing multifunctional applications.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Research
·
2024
·
IF 9.5
Li Chuang,Zheng Xueying,Sun Minghao,Tian Fei,Lei Danni,Wang Chengxin
The energy density of batteries can be increased by using high-load cathode material matched with sodium (Na) metal anode. However, the large polarization of the battery under such harsh conditions will promote the growth of Na dendrites and side reactions. Carbon materials are regarded as ideal modify layers on Na metal anode to regulate the Na + plating/stripping behavior and inhibit the Na dendrites and side reactions due to their light weight, high stability and structural adjustability. However, commonly used carbon nanotubes and carbon nanofibers cannot enable these modified Na metal anodes to operate stably in full batteries with a high-load cathode (> 15 mg·cm −2 ). The most fundamental reason is that abundant polar functional groups on the surface bring serious side reactions and agglomerations lead to uneven Na + flow. Here, a proof-of-concept study lies on fabrications of carbon nanospheres with small amount of polar functional groups and sodiophobic components on the surface of Na metal anode, which significantly enhances the uniformity of the Na + plating/stripping. The assembled symmetric battery can cycle stability for 1300 h at 3 mA·cm −2 /3 mAh·cm −2 . The full battery with high-load Na 3 V 2 (PO 4 ) 3 (30 mg·cm −2 ) maintains a Coulombic efficiency of 99.7% after 100 cycles.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 4
·1936-1942
·
IF 3.108
Chao Chen,Yonggao Jia,Dan Jia,Shuxin Li,Shulin Ji,Changhui Ye
Silver nanowire transparent conductive films have been proposed as a promising candidate to replace indium tin oxide films for electronic applications. Stable ink with a high loading amount of silver nanowires is essential for the scale-up of the production of transparent conductive films considering the storage need due to separated procedures of nanowire synthesis and film formation. It is very hard to re-disperse the nanowires if irreversible aggregation happens during storage for coating. The paradox of stabilizing the concentrated nanowire ink and facile utilizing of the ink for highly conductive films with a low junction resistance at the joint points of organic stabilizer-capped silver nanowires has to be solved. A two-step method has been provided to overcome the difficulty in this work. First, a silver nanowire ink with the loading amount of 5 mg mL−1 is formulated, which is stable for more than three months under normal conditions. The success in maintaining the long-term stability lies in applying an appropriate amount of surfactant and choosing organic solvents with appropriate mixing ratios to strengthen the interaction of the surfactant with the silver nanowires and to decrease the free energy through enthalpy of mixing silver nanowires into the solvent for aggregation prevention. Second, the concentrated ink at any time is simply washed a suitable number of times and diluted to a uniform dispersion for coating of TCFs with excellent optical and electrical performance, having a figure of merit σDC/σOP (ratio of the electrical conductance to optical conductance) as high as 228. The viability of treating silver nanowires in large quantity paves the way for real industrial applications.
研究领域:
材料科学
·
纳米技术
·
电子工程
✓ 已验证
DOI
高影响因子
Small
·
2024
·Vol. 20
·期 34
·2312059
·
IF 13
Lu Wei,Hongyuan Wu,Songtao Liu,Yuyu Zhou,Xin Guo
Realizing high-performance thick electrodes is considered as a practical strategy to promote the energy density of lithium-ion batteries. However, establishing effective transport pathways for both lithium-ions and electrons in a thick electrode is very challenging. This study develops a hierarchical conductive network structure for constructing high-performance NMC811 (LiNi 0.8 Mn 0.1 Co 0.1 O 2 ) cathode toward stable cycling at high areal mass loadings. The hierarchical conductive networks are composed of a Li + /e − mixed conducting interface (lithium polyacrylate/hydroxyl-functionalized multiwalled carbon nanotubes) on NMC811 particles, and a segregated network of single-walled carbon nanotubes in the electrode, without any additional binders or carbon black. Such strategy endows the NMC811 cathode (up to 250 µm and 50 mg cm −2 ) with low porosity/tortuosity, ultrahigh Li + /e - conductivities and excellent mechanical property at low carbon nanotube content (1.8 wt%). It significantly improves the electrochemical reaction homogeneity along the electrode depth, meanwhile effectively inhibits the side reactions at the electrode/electrolyte interface and cracks in the NMC particles during cycling. This work emphasizes the crucial role of the electronic/ionic cooperative transportation in the performance deterioration of thick cathodes, and provide guidance for architecture optimization and performance improvement of thick electrodes toward practical applications, not just for the NMC811 cathode.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Hong Qu,Lianbao Liang,Jin Fang,Yiyu Chen,Jizhuang Wang,Guihua Jiang,Sulian Su,Lifeng Hang
Flexible zinc-iodine batteries (FZIBs) are promising flexible power supply devices due to their intrinsic safety and high theoretical energy density. However, the relatively low mass loading and the simultaneous shuttling phenomenon of the active iodine species in the iodine cathode jointly result in limited areal capacity and areal energy density of the FZIBs. Herein, we construct a cathode-electrolyte interface (CEI) layer based on bio-sustainable positively charged chitosan (p-Chitosan) on the iodine cathode to locate iodine species and restrict the polyiodide shuttling effect through strong electrochemical interaction. Under the ultra-high iodine loading of 14.6 mg cm −2 , the FZIBs delivered a high specific capacity of 209.1 mAh g −1 at a current density of 0.2 A g −1 , thus presenting a high areal capacity (2.56 mAh cm −2 ) and high areal energy density (2.96 mWh cm −2 ). Additionally, the capacity of the flexible battery based on the p-Chitosan CEI layer remains nearly unchanged when bending at various angles of 0°, 30°, 60°, 90°, 120°, and 150°, respectively. The flexible battery bending at an angle of 60° can stably operate over 1100 cycles, suggesting its potential as a flexible power supply.
研究领域:
材料科学
·
能源技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 18
·15234-15239
·
IF 3.289
Weikun Zhang,Chong Lin,Shan Cong,Junyu Hou,Bin Liu,Fengxia Geng,Jian Jin,Minghong Wu,Zhigang Zhao
Li–S batteries are regarded as one of the most promising energy-storage devices due to their high theoretical energy density, five times higher than that of lithium-ion batteries (2600 vs. ∼500 W h kg−1). However, the polysulfide shuttle effect is the primary challenge for future applications of Li–S batteries. Herein, a novel barrier layer material, nonstoichiometric W18O49 nanowires, is reported to alleviate the undesirable shuttle effect, thereby largely boosting the specific capacity and cyclability of Li–S batteries. Without particular cathode design, the introduction of W18O49 nanowires enables the commercially available micro-sized sulfur cathode with 70% sulfur loading to deliver a respectable initial discharge capacity of 1142 mA h g−1 and retain a specific capacity of about 809 mA h g−1 after 50 cycles, even at a current density of 0.5 A g−1. To the best of our knowledge, such a capacity fading for Li–S batteries based on high loading of commercial micro-sized sulfur has been rarely reported.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）