ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Rude Guo,Yanxia Che,Guangyuan Lan,Jianlian Lan,Jianhui Li,Lidan Xing,K. Xu,Weizhen Fan,Le Yu,Weishan Li
Performances of lithium-ion batteries at subambient temperatures are extremely restricted by the resistive interphases originated from electrolyte decomposition, especially on the anode surface. This work reports a novel strategy that an anode interphase of low impedance is constructed by applying an electrolyte additive dimethyl sulfite (DMS). Electrochemical measurements indicate that the as-constructed interphase provides graphite/LiNi0.5Co0.2Mn0.3O2 pouch cells with excellent low-temperature performance, outperforming the interphase constructed by 1,3,2-dioxathiolane 2,2-dioxide (DTD), a common commercially used electrolyte additive. Spectral characterizations in combination with theoretical calculations demonstrate that the improved performance is attributed to the unique molecular structure of DMS, which presents appropriate reduction activity and constructs the more stable and ionically conductive anode interphase due to the weaker combination of its reduction product with lithium ions than DTD. This rational design of interphases via an additive structure has been proven to be a low cost but rather an effective approach to tailor the performances of lithium-ion batteries.
研究领域:
电化学
·
材料科学
·
能源存储
·
界面工程
·
电池技术
✓ 已验证
DOI
高影响因子
Small
·
2018
·Vol. 14
·期 21
·1704367
·
IF 9.598
Sheng Huang,Chao Meng,Min Xiao,Shan Ren,Shuanjin Wang,Dongmei Han,Yuning Li,Yuezhong Meng
Sodium ion batteries (SIB) are considered promising alternative candidates for lithium ion batteries (LIB) because of the wide availability and low cost of sodium, therefore the development of alternative sodium storage materials with comparable performance to LIB is urgently desired. The sodium ions with larger sizes resist intercalation or alloying because of slow reaction kinetics. Most pseudocapacitive sodium storage materials are based on subtle nanomaterial engineering, which is difficult for large-scale production. Here, ferroelectric Sn 2 P 2 S 6 with layered nanostructure is developed as sodium ion storage material. The ferroelectricity-enhanced pseudocapacitance of sodium ion in the interlayer spacing makes the electrochemical reaction easier and faster, endowing the Sn 2 P 2 S 6 electrode with excellent rate capability and cycle stability. Furthermore, the facile solid state reaction synthesis and common electrode fabrication make the Sn 2 P 2 S 6 that becomes a promising anode material of SIB.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
固体化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Zhenggang Jia,Xuexi Zhang,Mingfang Qian,Yingmin Jin,Yueping Xiong
The rapid development of electric vehicles and energy storage facilities requires novel secondary batteries with higher energy density and increased safety. Sulfide solid electrolyte, especially lithium thiophosphate (LPS), has become a research hotspot due to its non-flammability and high structural strength. The high-performance LPS powders need to be prepared into flakes before practical application. However, the widely used cold pressing process for the preparation of LPS flakes have fatal defects such as low density and high interface resistance. This work systematically studied the differences in the body defects, density and crystallization process of electrolyte flakes obtained by different tableting processes. The nucleation is inhibited in the high-density sulfide solid electrolyte samples. In addition, based on the improvement of pressurizing equipment, it was discovered for the first time that glass transition process (the secondary hot pressing at glass transition temperature) can significantly improve the distribution of local structured ions. Notably, the content of P 2 S 7 4- and P 2 S 6 4- has doubled after glass transition, resulting in improving the ionic conductivity and stability, respectively. The HP-GT (the electrolyte flakes after glass transition) exhibits extremely high relative density (99 ± 1%), low ion activation energy (14.4 kJ/mol) and extremely high ion conductivity (3.48 mS/cm). On the other hand, a specific discharge capacity of ∼ 680 mAh g −1 is still maintained for the Li|HP-GT|MoS 2 solid-state battery after 30 cycles. This work confirms the feasibility of the sulfide solid electrolyte after the second hot-pressing in the application of high-safety, high-energy density solid-state lithium batteries.
研究领域:
材料科学
·
固态离子学
·
电化学
·
能源材料
·
电池技术
·
无机非金属材料
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Xin Mao,Zhaoyan Deng,Yiming Liu,Haiyang Xie,Qian He,Yanjuan Zhang,Zuqiang Huang,Huayu Hu,Tao Gan
Ultra-small metal clusters have emerged as one of the most promising alternatives to heterogeneous Fenton-like catalysts. Despite the high atom utilization and structural stability of catalysts with ultra-small clusters and single-atom sites, there is still challenging for the synthesis of these catalysts due to their facile aggregation. Herein, we successfully fabricated a catalyst (Fe-NC-900) with single-atom sites and ultra-small clusters by a ball milling method combined with subsequent pyrolysis process. Fe-NC-900 showed high efficiency and superior stability in the activation of peroxymonosulfate (PMS) for catalytic oxidation of refractory organic compounds. Chemical quenching experiments, electron paramagnetic resonance (EPR), in-situ Raman spectra, and electrochemical analysis indicated that the 1 O 2 oxidation was the main non-radical pathway rather than the high-valent iron oxidation and electron transfer mechanism for the degradation of RhB in the Fe-NC-900/PMS system. This work provides useful insights into the design and synthesis of the catalysts with single atoms and ultra-small clusters for practical applications in Fenton-like catalytic processes.
研究领域:
环境催化
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材料化学
·
纳米环境技术
·
高级氧化过程
·
污染物降解
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Mengtian Huang,Cong Chen,Ting Wang,Qi Sui,Kun Zhang,Benxia Li
Developing the heterogeneous photocatalysts with high performance for carbon dioxide (CO 2 ) conversion to solar fuels is remarkably significant for reducing the atmospheric CO 2 level and achieving the target of carbon neutrality through the artificial photosynthesis strategies. However, it remains a great challenge for most of the photocatalysts to achieve the CO 2 -to-hydrocarbon conversion via a multi-proton coupled multi-electron reduction process. In this work, the cadmium-sulfide/gold/graphitic-carbon-nitride (CdS/Au/g-C 3 N 4 ) heterojunction photocatalyst with sandwich nanostructures is designedly constructed by a selective two-step photodeposition process. The better separation of photogenerated electrons and holes in CdS/Au/g-C 3 N 4 heterojunction creates the higher density of surface photogenerated electron, dynamically accelerating the multi-electron reduction of CO 2 . Moreover, the selective photodeposition of CdS on Au/g-C 3 N 4 affords sufficient electron-enriched S δ− active sites which are more beneficial to the provision of H adatoms. These advantages jointly improve the photocatalytic CO 2 conversion to methane (CH 4 ) via a multi-proton coupled multi-electron reduction process. The CH 4 yield rate on CdS/Au/g-C 3 N 4 photocatalyst is about twice that of CdS/g-C 3 N 4 , while g-C 3 N 4 and Au/g-C 3 N 4 only produce CO. The total electron utilization for CO 2 reduction on CdS/Au/g-C 3 N 4 photocatalyst is 6.9 times that of g-C 3 N 4 . Furthermore, the CdS/Au/g-C 3 N 4 photocatalyst exhibits high stability in consecutive cycles of CO 2 reduction reaction. The photocatalytic mechanism is proposed on the basis of in situ spectrographic analyses together with other detailed characterizations.
研究领域:
光催化化学
·
环境能源材料
·
人工光合作用
·
碳中和科技
·
纳米催化
·
表面科学
·
太阳能转化
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
Zhi Yang,Shufang Ma,Yu Shi,Xiaodong Hao,Lin Shang,Bin Han,Bocang Qiu,Bingshe Xu
Nanowires (NWs)-based heterojunction photodetectors (PDs) have been widely applied in the fields of remote sensing, night vision, environmental monitoring, and optical communications with high light absorption coefficient and photoelectric conversion efficiency. Here, S-GaAs NWs/Si heterojunction was developed to form a broadband self-powered PDs by growing GaAs NWs on Si substrate through the sulfur-catalyzed assisted chemical vapor deposition (CVD) technology. Compared with the pure GaAs NWs, the sulfur-assisted catalysts could not only inhibit Ostwald ripening of Au seeds to improve the crystalline quality of NWs but also form a thin Ga–S bond passivation layer to reduce surface defects and enhance the optoelectronic performance of the PDs. The fabricated GaAs NWs/Si heterojunction PDs exhibit excellent performances with the large responsivity of 10.3 mA W −1 and high detectivity of 9.59 × 10 12 cm Hz 1/2 W −1 . Additionally, the designed PDs have the broadband wavelength photoresponse from visible to near infrared and fast response speed (rise/fall time of 3.8/21.8 ms). Importantly, the develop strategy of hybrid heterojunction PDs can be extended to other semiconductor materials for facilitating the practical application of high-performance optoelectronic devices .
研究领域:
半导体材料
·
纳米电子学
·
光电子学
·
凝聚态物理
·
功能材料
·
器件物理
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Yuanyuan Li,Jun Cheng,Jianwei Li,Zhen Zeng,Yixuan Guo,Hongqiang Zhang,Hongbin Liu,Xiao Xu,Yiwei Rao,Deping Li,Lijie Ci
Sulfide solid state electrolytes capture much attention owing to their high conductivity and decent mechanical property. Nevertheless, the moisture instability and poor interfacial compatibility against lithium metal anode remain challenging and hinder the practical application. Herein, we report a novel indium (In) doping strategy based on the hard-soft-acid-base theory to tackle these issues. Optimized Li 7 P 2.9 S 10.9 In 0.1 electrolyte exhibits a high ionic conductivity of 4.1 × 10 −3 S cm −1 and achieves an enhanced interfacial compatibility. Importantly, as In partially replaces the phosphorus (P), the amount of released hydrogen sulfide can be significantly decreased and the air stability is improved. The all-solid-state battery assembled with the Li 7 P 2.9 S 10.9 In 0.1 electrolyte demonstrates a high discharge capacity and a good cycling stability under a high current density of 1.0 C. This work provides a practical and effective method to design sulfide-based solid-state electrolyte with high ionic conductivity and enhanced air stability for all-solid-state battery applications.
研究领域:
材料科学
·
电化学
·
能源存储
·
固态离子学
·
电池技术
✓ 已验证
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2015
·Vol. 26
·期 8
·953-959
·
IF 1.757
Shuting Wang,Lan Cen,Qihao Wu
Maleated glycidyl 3-pentadecenyl phenyl ether with styrene (MGS) was synthesized from glycidyl 3-pentadecenyl phenyl ether (GPPE), maleic anhydride (MAH) and styrene (St) in the presence of AIBN initiator at 80°C, and then the resultant MGS was applied as a compatibilizer to prepare SBR/silica composites. Meanwhile, the commercial compatibilizer bis-(triethoxysilylpropyl) tetrasulfide (named Si69) added into composite was also prepared for comparison purpose. The synthetic MGS structure was characterized by GPC and FTIR, and SBR/silica compounds with different compatibilizer were analyzed using RPA, DMA and so on. The results showed that M̄n and M̄w of MGS were 19,538 g/mol and 23,790 g/mol, respectively. The curing time of compounds with MGS increased, whereas the maximum and minimum torques decreased. The addition of MGS decreased Payne effect of SBR/silica compounds, which implied an improvement of silica dispersion in the compounds. Bound rubber content of compound with MGS was about 1.7 times higher than the absence and 1.5 times higher than that with Si69. The tensile strength of the composites was improved by increasing compatibilizer loading, and the optimum value was observed at 6 phr of MGS. Meanwhile the use of MGS can improve the anti-aging property of composite. According to DMA, the tanδ value at 0°C of composite with MGS was higher than composite without compatibilizer suggesting that MGS can improve the wet skid resistance of composite. The SEM analysis revealed that introduction of MGS enhanced the compatibility between SBR and silica. Copyright © 2015 John Wiley & Sons, Ltd.
研究领域:
高分子化学
·
橡胶复合材料
·
材料界面科学
·
功能高分子
·
聚合物改性
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2013
·Vol. 129
·期 4
·2313-2320
·
IF 1.395
Mingchao Luo,Xiaoxue Liao,Shuangquan Liao,Yanfang Zhao
Waste rubber powder (WRP) was modified by microwave, sol–gel method, and both microwave and sol–gel method, respectively. The mechanical and dynamic mechanical properties of natural rubber (NR)/modified WRP composite were investigated. The influence of bis-(3-(triethoxysilyl)-propyl)-tetrasulfide (TESPT) content on curing characteristics and mechanical properties of vulcanizate was also studied. The results showed that NR/WRP modified by both microwave and sol–gel method composite owned the best mechanical properties. Rubber processing analyzer was used to characterize the interaction between silica and rubber chains and the dispersion of silica. With increase of TESPT content, the Payne effect decreased. Scanning electron microscopy indicated the coherency and homogeneity of in situ generated silica filled vulcanizate. Dynamic mechanical analyzer showed that NR/WRP modified by both microwave and sol–gel method composite with 5 phr TESPT exhibited the lower tan δ at temperature range of 50–80°C, compared with composite without TESPT and the higher tan δ at temperature of 0°C, compared with the conventional modification of WRP. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
研究领域:
高分子材料科学
·
橡胶工程
·
复合材料学
·
材料化学
·
高分子物理
·
功能材料
·
可持续材料技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2015
·
IF 2.729
Tingxuan Wu,Zhiguang Liu,Yujing Guo,Chuan Dong
In this work, a simple and highly sensitive electrochemical method was developed to detect luteolin based on thio-β-cyclodextrin functionalized graphene/gold nanoparticles modified glassy carbon electrode (SH-β-CD-GNs/AuNPs/GCE). The peak currents of luteolin on the SH-β-CD-GNs/AuNPs/GCE can be greatly enhanced compared to the SH-β-CD-GNs/GCE and the bare GCE. It suggests that the nanocomposite not only shows the excellent electrical properties of GNs and AuNPs but also exhibits higher enrichment ability of cyclodextrins via the host-guest interaction between cyclodextrin and luteolin . At the SH-β-CD-GNs/AuNPs/GCE, the peak currents increased linearly with the concentration of luteolin in the range of 10.0 pM to 10.0 μM. The detection limit was estimated to be 3.3 pM (S/N = 3), which was more sensitive or comparable with the previous electrochemical sensors for luteolin detection. The analytical performance of this sensor has been evaluated for the detection of luteolin in human serum with satisfactory results. Furthermore, the method might open up a new possibility by using the nanohybrids to monitor other flavonoids which can form host–guest complexes with cyclodextrins.
研究领域:
分析化学
·
纳米生物技术
·
电分析化学
·
药物代谢
·
生物传感器
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2017
·
IF 6.395
Xiubo Xie,Ming Chen,Peng Liu,Jiaxiang Shang,Tong Liu
Nickel sulfides decorated reduced graphene oxide (rGO) has been produced by co-reducing Ni 2+ and graphene oxide (GO), and is subsequently ball milled with Mg nanoparticles (NPs) produced by hydrogen plasma metal reaction (HPMR). The nickel sulfides of about 800 nm completely in situ change to MgS, Mg 2 Ni and Ni multiple catalysts after first hydrogenation/dehydrogenation process at 673 K. The Mg-5wt%NiS/rGO nanocomposite shows the highest hydrogen desorption kinetics and capacity properties, and the catalytic effect order of the additives is NiS/rGO, NiS and rGO. At 573 K, the Mg-NiS/rGO nanocomposite can quickly desorb 3.7 wt% H 2 in 10 min and 4.5 wt% H 2 in 60 min. The apparent hydrogen absorption and desorption activation energies of the Mg-5wt%NiS/rGO nanocomposite are decreased to 44.47 and 63.02 kJ mol −1 , smaller than those of the Mg-5wt%rGO and Mg-5wt%NiS samples. The best hydrogen desorption properties of the Mg-5wt%NiS/rGO nanocomposite can be explained by the synergistic catalytic effects of the highly dispersed MgS, Mg 2 Ni and Ni catalysts on the rGO sheets, and the more nucleation sites between the catalysts, rGO sheets and Mg matrix.
研究领域:
材料科学
·
纳米科技
·
能源化学
·
催化化学
·
储氢材料
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2016
·
IF 6.333
Hui Wu,Liang Shi,Jiaheng Lei,Dan Liu,Deyu Qu,Zhizhong Xie,Xiaodi Du,Peng Yang,Xiaosong Hu,Junsheng Li,Haolin Tang
The development of efficient and durable catalyst for oxygen reduction reaction (ORR) is critical for the practical application of proton exchange membrane fuel cell (PEMFC). A novel imidazole based ionic liquid is synthesized in this study and used subsequently for the preparation of a N and S co-doped metal-free catalyst with three dimensional ordered microstructure. The catalyst prepared at 1100 °C showed improved ORR catalytic performance and stability compared to commercial Pt/C catalyst. We demonstrate that the high graphitic N content and high degree of graphitization of the synthesized catalyst is responsible for its superb ORR activity. Our results suggest that the N and S co-doped metal-free catalyst reported here is a promising alternative to traditional ORR catalyst based on noble metal. Furthermore, the current study also demonstrate that importance of morphology engineering in the development of high performance ORR catalyst.
研究领域:
电催化
·
能源材料
·
纳米材料
·
物理化学
·
燃料电池
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）