Sustainable Materials and Technologies
·
2021
·
IF 7.053
Zhengwei Wan,Yingchong Huang,Xiaomin Zeng,Xinzhu Guo,Zhuoying Wu,Miaomiao Tian,Gu Wu,Min Ling,Zeheng Li,Xuehui Gao,Chengdu Liang
The binder plays a crucial role in maintaining electrode structure and improving the cycling performance in Li S batteries , especially for high–energy–density batteries. Here, a natural biopolymer peach gum (PG) was developed as sulfur cathode binder for the first time. PG binder owns abundant carboxyls and hydroxyls, which can form strong interaction between Li O and further effectively constrain polysulfides from shuttling. Besides, strong adhesion force and superior mechanical behavior of PG help to keep the electrode integrity and good electrical contact. Therefore, PG@S electrode achieves an impressively high discharge areal capacity of 27.10 mAh cm −2 with sulfur loading of 26.3 mg cm −2 .
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ARCHAEOLOGICAL SCIENCE
·
2024
·
IF 2.6
Shuxuan Shi,Yu Xiao,Chao Ma,Yingchun Fu,Zifan Chen,Danshu Shi,Shuya Wei
Some precious painted pottery have been excavated from a late Neolithic site (6000-5300 BP) in China recently. The materials and technique of the paint were comprehensively studied. The analytical techniques conducted include optical microscope (OM), scanning electron microscopy/energy dispersive X-ray spectrometry (SEM-EDS), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), Ultra Performance Liquid Chromatography-quadrupole-time of flight-mass spectrometry (UPLC-Q-TOF-MS) and thermally assisted hydrolysis-methylation pyrolysis-gas chromatography/mass spectrometry (THM-Py-GC/MS). The results revealed the painted pottery is lacquer-painted pottery, which is the earliest evidence of using laccol as binding media to paint pottery. Moreover, a two-layer structure of the paint technique was found. Cinnabar and a kind of yellow dye were detected in the first layer, while iron red was determined in the ground layer. Laccol, instead of urushiol as a binding medium, was identified in both two layers. Laccol is the maker compound from the tree of Toxicodendron (Rhus) succedanea , which mainly grows in Vietnam. Its presence in the painted pottery represents that the use of Toxicodendron (Rhus) succedanea resource can be as early as the late Neolithic period in China. The possibility of the origin of laccol was also discussed in the paper.
研究领域:
考古学
·
材料科学
·
生物学
✓ 已验证
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2021
·
IF 4.598
Tao Zhang,Wenshuo Zhang,Huihui Liu,Guannan Wang,Yuye Zhong,Mengwen Zhou,Qing Zhu,Houbin Li
The polymeric binders play a key role in the solid propellant, so the research on improving the performance of the binder has become particularly important. In this work, a novel fluorine-containing triblock copolymer PFPO-PTMG-PFPO and a fluorine-free triblock copolymer PECH-PTMG-PECH were obtained by the cationic ring-opening polymerization of 2-(2,2,3,3-Tetrafluoro-propoxymethyl)-oxirane (FPO) and epichlorohydrin (ECH) with Polytetramethylene Ether Glycol (PTMG), respectively. In comparison with PECH-PTMG-PECH, the three molecular weights of PFPO-PTMG-PFPO with fluorine-containing side chains had a higher glass transition temperature. With the increase of the fluorine-containing side chains, the molecular weights increased, and the T g also gradually increased from −64.1 ℃ to −51.8 ℃ in the DSC curves. The TGA-DTG curves indicated that three molecular weights of PFPO-PTMG-PFPO had a good thermal stability, and it was sharp weight loss temperature at around 368.0 ℃. Besides, the viscosity measurement indicated that the viscosity of the higher molecular weight of PFPO-PTMG-PFPO(c) (5357 g/mol) was lower than that of PFPO-PTMG-PFPO(b) (8266 g/mol). When a certain amount of fluorine-containing block was inserted, the influence of low friction coefficient of fluorine-containing polymer was dominant, in which performed the decreased polymer viscosity of the polymer as the increased molecular weight.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Chuxiong Huang,Jingxi Liang,Huayan Xiao,Xiujuan Wei,Tiefeng Liu,Zhan Lin,Shuxing Wu
SiOx is a highly promising anode material for realizing high-capacity lithium-ion batteries owing to its high theoretical capacity. However, the large volume change during cycling limits its practical application. The development of a binder has been demonstrated as one of the most economical and efficient strategies for enhancing the SiOx anode’s electrochemical performance. In this work, a multifunctional binder (T-PGA) is fabricated by cross-linking γ-polyglutamic acid (PGA) and tannic acid (TA) for SiOx anodes. The introduction of TA into PGA helps to buffer the volume changes of the SiOx anodes, facilitate diffusion of Li+, and construct stable SEI layers. Benefiting from this proposed binder, the SiOx anode maintains a reversible capacity of 973.0 mAh g–1 after 500 cycles at 500 mA g–1 and the full cell, pairing with LiNi0.5Co0.2Mn0.3O2 cathode, delivers a reversible capacity of 133 mA h g–1 (73.2% retention) after 100 cycles. This study offers valuable insights into advanced binders that are used in high-performance Li-ion batteries.
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
ACS Applied Energy Materials
·
2021
·
IF 6.024
Qiang Zhang,Fengying Zhang,Meng Zhang,Yuxiu Yu,Shuxia Yuan,Yaodong Liu
Silicon (Si) exhibits an excellent specific capacity and emerging application potential as anode material of lithium-ion batteries. However, Si anodes usually generate the huge volume expansion and the instability of the solid electrolyte interface, leading to performance degradation. Herein, a silicone-modified partially imidized polyamide acid (S-PA) is successfully synthesized, which shows excellent performances as the binder of a silicon-based electrode in lithium-ion batteries. The S-PA anodes exhibit high initial Coulombic efficiencies of above 87% and maintain over 98% in the following cyclic tests. At a current of 0.5 C, the initial discharge capacity of the S-PA-based electrode is as high as 2736 mAh g–1 and remains at about 2295 mAh g–1 over 200 cycles. The abundant chemical bonds in the S-PA binder contribute to the improvement of the interactions with silicon nanoparticles, maintain the electrode structural integrity, and facilitate the Li-ion diffusion during cycling. The results show that S-PA is a promising type of binder for silicon-based anodes as compared with commonly adopted PAA and PVDF.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Xinyang Liu,Meng Zhang,Xingzheng Peng,Mengke Li,Xuewu Gao,Yi Feng,Shengli Chen,Xiongwei Qu,Xiaojie Zhang
Although the proportion of binder in batteries is tiny, it plays a significant role in maintaining the integrity of the electrode structure and ensuring the cycling stability of batteries. This study, based on the concept of “redox mediators (RMs),” involved the design and synthesis of a series of Se–Se bonds containing polyurethanes, which have been used as binders for lithium iron phosphate cathodes in lithium-ion batteries (LIBs). Se–Se contained binders as RMs not only accelerate the redox kinetics of the battery but also improve the discharge specific capacity and lithium-ion (Li+) transport rate of the battery. The synergistic movement of the hard and soft segments in the polyurethane endowed the binders with high elasticity, and the hydrogen bonding within the binders further enhanced the mechanical properties and reduced the volume change of the electrode during charging and discharging, thus improving the electrochemical cycling performance of the battery. After 500 cycles at 1 C, LIBs with PUPEG-400 as the binders boasted the highest initial discharge specific capacity of 139.77 mA h g–1, while those with PUPEG-2000 as the binders exhibited the highest capacity retention of 72.37%.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2020
·
IF 14.588
Xiaoxiang Fan,Ruming Yuan,Jie Lei,Xiaodong Lin,Pan Xu,Xueyang Cui,Lin Cao,Mingsen Zheng,Quanfeng Dong
The shuttle effect of dissolved polysulfides produced during the operation of lithium–sulfur batteries is the most serious and fundamental problem among many challenges. We propose a strategy via in situ formation of a functionalized molecule with a dual-terminal coupling function to bind the dissolved polysulfide intermediates, thus turning them back into solid-state organopolysulfide complexes by molecule binding, and then the polysulfides can be pinned on the cathode firmly. The dual-terminal coupling functional molecule binder (MB), which is formed in situ by reaction between quinhydrone (QH) and lithium, can not only bind polysulfides by reversible chemical coordination but also promote the conversion of polysulfides during cycling synchronously. In theory, with the dual-terminal coupling function, MB can bind polysulfide intermediates to copolymerize them, forming −[MB-Li2Sn]– that has faster reaction activity and redox conversion kinetics in comparison with simple Li2Sn. With the MB, the Li–S battery exhibits a large initial capacity of 1347 mAh g–1 at 0.1 C. The remaining capacity of 963 mAh g–1 at 1 C shows no obvious decay for more than 400 cycles, and the retention of the first 300 cycles can reach 96.9%, in particular. This study delivers an alternative approach to resolving the shuttle effect and achieving excellent Li–S battery performance, with the potential significance going way beyond battery systems.
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 ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Yu Qin,Haowen Jiang,Kanghui Cai,Zhenzhen Liu,Jing Su,Xiaoyan Lv,Yanxuan Wen
Silicon serves as a promising anode material for lithium-ion batteries. However, silicon suffers from low initial coulombic efficiency (ICE) and poor cycling performance due to large volume change, lithium consumption, the formation of a solid-electrolyte interphase (SEI), and low conductivity. To improve the performance of silicon anodes, this work proposed a new strategy for the design of silicon electrode binders based on β -cyclodextrin, citric acid, and sodium alginate, where a binder with a chemical/ionic/hydrogen-bonded triple-crosslinked network was constructed in situ during electrode preparation. The binder with a triple-crosslinked network provided the silicon electrode with a high binding strength, excellent ion/electron permeation network, and robust interfacial protective layer, providing better tolerate volume changes, and inhibiting the interfacial side reactions and the formation of solid-electrolyte interphase, as well as accelerating Li + diffusion during the charge/discharge processes. The prepared silicon electrodes had a higher ICE (92.8%), better cycling stability (1429 mAh/g after 400 cycles at 0.5 C), and superior rate performance (1274 mAh/g at 4 C). This work may guide the design of high-performance binders for silicon electrodes.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Shijun Chen,Chunhua Wang,Weidong Sang,Qi Chen,Zhengxin Li
Vitrified-bond diamond composites are materials commonly used for grinding wheels in the grinding process of silicon wafer production. In this study, the mechanism of the in situ honeycomb structure formation in the sintering process of composite materials was explored by changing the binder content without adding a pore-forming agent.The results show when the content of vitrified bond is 55 wt%, the in situ honeycomb structure forms, resulting in a porosity of 60.68 % and bending strength of 23.03 MPa.The X-ray diffraction (XRD), Raman spectroscopy (RS), and thermogravimetry-differential thermal analysis (TG-DTA) results show that no graphitization of diamond grain occurs during sintering. The bonding ability between the vitrified bond and diamond grain, along with the microstructure of vitrified-bond diamond composites, was studied using scanning electron microscopy (SEM). Moreover, the results of energy spectrum analysis (EDS) show that the diffusion and segregation of Na at the interface between the diamond particles and the vitrified bond improve the bonding strength, and the vitrified bond can effectively bond with the diamond particles. Finally, the formation mechanism of the honeycomb structure was elucidated using the surface and interface sintering theory.
研究领域:
材料科学
·
机械工程
✓ 已验证
DOI
高影响因子
Polymers
·
2017
·Vol. 9
·期 6
·200
·
IF 3.364
Chuyao Liang,Jie Li,Min Xia,Guoping Li,Yunjun Luo
Based on the Diels–Alder reaction and hydroxyl-terminated polybutadiene (HTPB) binders of solid propellants, two novel compounds—furfuryl-terminated polybutadiene (FTPB) and trifurfuryl propane (TFP)—were designed and synthesized, and their structures were characterized. A new kind of reversible Diels–Alder reaction system was formed by FTPB as main resin,N,N′-1,3-phenylenedimaleimide (PDMI) as curing agent and TFP as chain extender. The results showed that this system had good mechanical properties with a tensile strength of 1.76 MPa and a tensile strain of 284% after curing, and the repair efficiency of the crack was 88%. Therefore, it could be used as a novel binder of energetic materials such as solid propellant and PBX explosives to provide them with self-repairing characteristics and improve the reliability for application.Keywords:Diels–Alder reaction;hydroxyl-terminated polybutadiene;binder;self-repairing;solid propellant
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2022
·Vol. 19
·期 2
·2205065
·
IF 15.153
Zhuoying Wu,Zhengwei Wan,Zeheng Li,Qiaokun Du,Tong Wu,Jun Cao,Min Ling,Chengdu Liang,Yuanzhong Tan
Large-scale applications of conventional conductive binders for silicon (Si) anodes are challenging to accomplish due to their complex synthesis steps and high cost. Herein, a carbonized polymer dots-assisted polyvinyl alcohol-chitosan (PVA-CS-CPDs) binder is developed through a simple and low-cost hydrothermal method. Through rational design, the PVA-CS-CPDs binder retains rich polar groups while forming conjugated structures. The conjugated structure endows the PVA-CS-CPDs with high electronic conductivity, and the retained polar groups maintain strong binding strength. The proposed water-soluble binding system acts as both a binder and conductive additive, enabling stable cycling for high-Si-content (90 wt.%) anodes without any other conductive additives.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2021
·
IF 6.953
Min Zou,Jing-Yan Li,Meng-Jia Zhang,Jun-Hui Li,Jun-Tao Huang,Pei-Dan You,Shu-Wen Liu,Chun-Qiong Zhou
At present, there are still no anti-Zika virus (ZIKV) drugs or vaccines approved by FDA with accurate targets and antiviral mechanisms. Considering the RNA G-quadruplex sequences in ZIKV genome, it is very meaningful to develop G-quadruplex binders as potential anti-ZIKV drugs with novel and accurate targets. In this paper, five classical G-quadruplex binders including Ber , Braco 19 , NiL , 360A and PDS have been chosen to discuss their interaction with ZIKV RNA G-quadruplexes. PDS shows higher binding affinity and thermal stability than the other G-quadruplex binders. This property is further evidenced in cells by immunofluorescence microscopy. And PDS shows higher anti-ZIKV activity (EC 50 = 4.2 ± 0.4 μM) than the other G-quadruplex binders as well as the positive control ribavirin, with a low cytotoxicity. By time-of-addition assay, PDS exerts antiviral activity at the post-entry process of ZIKV replication cycle, thus inhibiting ZIKV mRNA replication and protein expression. Furthermore, PDS combines with ZIKV NS2B-NS3 protease and reduces its catalytic activity. This study suggests that G-quadruplex binder PDS is an effective multi-target ZIKV inhibitor, which provides more guidance to design some novel anti-ZIKV drugs targeting ZIKV RNA G-quadruplexes.
研究领域:
病毒学
·
药物化学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）