Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 46
·24579-24589
·
IF 11.301
Yongkang Han,Jinmei Xu,Wei Wang,Fu Long,Qunting Qu,Yan Wang,Honghe Zheng
Interfacial modification is one of the most important technologies to improve the overall electrochemical properties of Ni-rich cathodes. Herein, a novel strategy of in situ planting of an electrolyte film-forming additive on a single crystal NCM811 surface is proposed by consuming the residual lithium to develop a functional Al(Li)BOB nano-layer. Different from traditional physical coating, this approach cleverly consumed the undesirable residual lithium on the NCM811 surface. The in situ grown 30–50 nm Al(Li)BOB layer on the single crystal NCM811 cathode surface contributes to its much enhanced electrochemical performances. At a high operating voltage (charge voltage limit of 4.5 V vs. Li/Li+), the capacity retention is greatly increased from 57.0% to 83.5% after 295 cycles. Meanwhile, the incorporation of aluminum is effective in improving the thermal stability of the Ni-rich cathode. The novel interfacial strategy by in situ implanting of an electrolyte additive is of important significance for solving the critical interfacial issue for Ni-rich cathode materials.
研究领域:
材料科学
·
电化学
·
能源存储
·
锂离子电池
·
界面工程
·
纳米材料
·
固态化学
✓ 已验证
DOI
高影响因子
Journal of Materiomics
·
2022
·Vol. 9
·期 3
·568-576
·
IF 8.589
Qiujun Wang,Weiqi Zhu,Ya Su,Di Zhang,Zhaojin Li,Huan Wang,Huilan Sun,Bo Wang,Dan Zhou,Li-Zhen Fan
Lithium metal batteries based on solid electrolytes are considered as promising candidates with high energy density and safety. However, the weak solid-solid contact between electrolyte and electrode can easily lead to interface instability and lithium ions discontinuous migration, which seriously reduces the electrochemical performance of the battery. Herein, we construct a soft gel interfacial layer to improve the stability of the solid-solid interface between electrolyte and electrode by means of polyester-based monomers and imidazole-based ionic liquids. Based on this, garnet-type Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) particles as inorganic ceramic filler were introduced in the layer to obtain composite electrolytes with high ionic conductivity (up to 1.1 × 10 −3 S/cm at 25 °C). As a result, the assembled lithium symmetric battery of Li|THCE-15%LLZTO|Li suggests excellent cycling stability with 700 h at 0.1 mA/cm 2 at 50 °C, and the lithium metal batteries of LFP|THCE-15%LLZTO|Li delivers high initial discharge capacity of 128.2 mA ·h/g with capacity retain of 75.48% after 150 cycles at 2 C. This work paves a new route to build safe and stable lithium metal batteries with synergistic introduction of composite electrolytes between electrolyte and electrode using soft gel interfacial layer and inorganic filler.
研究领域:
电化学
·
材料科学
·
能源存储
·
固体离子学
·
界面工程
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Jianling Huang,ChengWei Liao,Hui Wang,YuJun Zhao,Liuzhang Ouyang,Jiangwen Liu,Min Zhu
Mg-based alloy anodes suffer from severe corrosion in conventional electrolytes (KOH solution) and this substantially obstructs the cycle life, which is a great challenge for using them in the Ni-MH battery. Herein, a high concentration tetramethylammonium hydroxide (TMAH) aqueous electrolyte with a special hydrate structure is explored and enables excellent cycle stability and high capacity for Mg-based alloy anodes. In this electrolyte, the Mg 0.4 Ti 0.1 Ni 0.5 alloy anode delivers a maximum discharge capacity of 466 mAh g −1 , and maintains 210 mAh g −1 after 100 cycles owing to the reduced corrosion rate , which are much better than that in 6 M KOH electrolyte, being 425 mAh g −1 and 69 mAh g −1 , respectively. Furthermore, by in-situ forming Cu coating on the Mg 0.4 Ti 0.1 Ni 0.5 electrode surface during charging process with the adding 0.01 M of Cu(OH) 2 in TMAH electrolyte, the corrosion of the electrode is further suppressed and the reversible capacity can reach 313 mAh g −1 after 100 cycles. The high conducting Cu coating can also increase the rate capability of the electrode by promoting the charge transfer. Thus, using TMAH electrolytes provides a new approach to promote the electrochemical performances of Ni-MH batteries with Mg-based alloy anodes.
研究领域:
材料科学
·
电化学
·
能源存储
·
金属腐蚀与防护
·
功能材料
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Wei Feng,Huirong Liu,Mingliang Zhao,Jianling Li,Feiyu Kang
The poly(ethylene oxide) based composite solid electrolyte(PEO-CSE) is an effective solution for developing high-performance solid-state lithium battery . However, the poly(ethlene oxide)(PEO) based solid-state lithium battery using 4.0 V cathode suffers from severe interfacial instability problems. In this work, we add additive lithium difluorophosphate(LiPO 2 F 2 ) into the PEO-CSE to form a stable and low resistance interphase at the cathode/electrolyte interface during charge/discharge process. The electrochemical stability window of PEO-CSE increases to ∼5.0 V. Besides, the electrochemical performance of PEO based solid-state lithium battery with LiCoO 2 as cathode is excellent. The discharge capacity of LiCoO 2 /Li cell with LiPO 2 F 2 reaches 108.5 mAh g −1 at 1.0C. In contrast, the discharge capacity that without LiPO 2 F 2 is only 60.0 mAh g −1 . Meanwhile, the PEO-CSE with LiPO 2 F 2 cell delivers stable cycle performance at 4.2 V. The capacity retention maintains 88.5% compared with 16.1%(without LiPO 2 F 2 ) after 100 cycles. Furthermore, it's still maintains 83.3% after 150 cycles. In addition, the cathode/electrolyte interface is analyzed by transmission electron microscope(TEM) and X-ray photoelectron spectroscopy(XPS). Galvanostatic intermittent titration test(GITT) is used to analyze the dynamic diffusion performance. This strategy provides a simple and effective way to improve the high voltage stability of the cathode/electrolyte interface.
研究领域:
电化学
·
材料科学
·
能源存储
·
固态电池
·
界面工程
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·Vol. 48
·期 3
·3081-3095
·
IF 4.527
Mingchao Wang,Zhaoli Chen,Jingxuan Liu,Zhaojie Feng,Jingfang Zhang,Wenzheng Zhai,Haijun Zhang
To meet the high demand for ceramic/superalloy composite structural components in various fields, an advanced high-temperature adhesion technique was firstly developed by preparing a novel inorganic/organic hybrid adhesive suitable for ZrO 2 and TC4 . Chemical bonding started to work at ∼600°C, and became the crucial bonding mechanism at elevated temperatures. The formation of ZrSiO 4 and Ti 5 Si 3 at the interfaces of two substrates not only increased the interfacial connection strength , but also formed two gradient layers with a size of ∼2 μm to effectively alleviate the difference of composition and performance between the adhesive and substrates. In the temperature range of 500–900°C, the matching degree of CTE among ZrO 2 , adhesive and TC4 is higher, and the maximum difference does not exceed 3×10 -6 K -1 . Meanwhile, the formation of a composite structure containing various ceramics (ZrO 2 , SiC and ZrB 2 ) and intermetallics (Ni–Si, Al–Ni), and the improvement of structural compactness of adhesive from 500 to 900°C greatly improved the bonding strength to the maximum value of 31.4 MPa at 900°C. Also, the adhesive pretreated at 900°C showed good thermal cycling resistance, and the strength was still higher than 15 MPa after 50 cycles. For cured adhesive, when used directly in an extreme environment, it can provide bonding strength not less than 5 MPa in the whole temperature range, indicating that the adhesive possessed potential emergency repair convenience. This work significantly broadened the application of high-temperature-resistant adhesion technology in the connection of dissimilar ceramics and alloys.
研究领域:
材料科学
·
复合材料
·
界面工程
·
高温功能材料
·
连接技术
✓ 已验证
DOI
高影响因子
Arabian Journal of Geosciences
·
2019
·Vol. 12
·期 7
·256
·
IF 1.141
Li Weitao,Wei Falin,Xiong Chunming,Ouyang Jian,Zhao Guang,Shao Liming,Dai Mingli
Aiming at deep profile control in water flooding reservoirs, a heterogeneous combination flooding system, composed of dispersed particle gel (DPG) and a zwitterionic surfactant (THSB), was developed. The mean particle diameter was adjusted and then the DPG morphology and diameter were characterized using a laser scanning, confocal microscope, and dynamic light scattering. The effects of DPG concentration, temperature, pH, and salinity on THSB interfacial tension (IFT) were investigated. A method for determining DPG concentration was proposed, and the dynamic retention and migration mechanisms of the particles were evaluated, using cores with different permeabilities. Finally, the oil displacement mechanism of the combination flooding system was explored through visual simulation experiments and scanning electron microscopy. The results showed that the particle diameter was 2.5 μm, that compared with a surfactant system, the IFT of the combination flooding system was relatively low, and that the temperature, pH, and NaCl content of solutions had little effect on THSB IFT. Since specific matching relationships between DPG particles and reservoir pore throats existed, the retention amount and injection pressure were improved with the increased core permeability. Visual simulation experiments revealed the oil recovery mechanism of the combination flooding system. This combination flooding system can be used in reservoirs under varied conditions, as the particle diameter can be adjusted on a case-by-case basis, and the THSB surfactant proved to be high-temperature resistant and high-salinity tolerant. The combination flooding system can be applied to deep profile control and oil displacement, in oil fields.
研究领域:
石油工程
·
提高采收率
·
油田化学
·
渗流力学
·
油气田开发
✓ 已验证
DOI
高影响因子
Journal of Materiomics
·
2022
·Vol. 8
·期 5
·1001-1008
·
IF 8.589
Xiaoyang Wang,Chun Li,Qihan Zhou,Mingshen Li,Mushi Zheng,Junlei Qi,Xiaoqing Si,Jian Cao
One of the critical challenges for the protonic ceramic fuel cell stack is sealing electrolytes and interconnects. However, the traditional Ag CuO sealant will aggravate the oxidation along the interconnect surface and result in brittle compound layers at the BaZr 0.1 Ce 0.7 Y 0.1 Yb 0.1 O 3- δ (BZCYYb) electrolyte interface. The present work demonstrates that a silver particle interlayer with high dislocation density can be adopted to join BZCYYb electrolyte to the interconnect (AISI 441 stainless) in air instead of traditional Ag CuO sealant. Elevating temperatures result in a sufficient bonding at the Ag/BZCYYb interface, and a defect-free joint is obtained at 950 °C. Atomic bonding at Ag/BZCYYb interface is confirmed by TEM. Also, a dense and thin oxide layer (2–3 μm) is formed along the AISI 441 interface. Ag particles in the interlayer provide the main driving force for the sintering joining. The massive dislocations promote the recovery and recrystallization of the Ag interlayer, as well as the interdiffusion of BZCYYb/Ag. After aging in the wet oxidizing atmosphere at 600 °C for 300 h, joints remain intact and dense, indicating superior oxidation resistance and aging performance. Besides, the joint shear strength (25.3 MPa) is 59 % higher than that of the joint brazed by traditional Ag CuO.
研究领域:
材料科学
·
固态离子学
·
能源材料
·
电化学
·
连接技术
·
高温材料
✓ 已验证
DOI
高影响因子
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
·
2021
·
IF 5.234
Siqi Xiang,Xingjian Du,Yihan Liang,Mengcheng Zhou,Xinfang Zhang
Full density TiC reinforced Cu matrix composites are fabricated by electropulsing-assisted flash sintering within 40 s. The addition of TiC significantly increases the hardness of the sintered sample. However, liquid Cu does not wet stoichiometric TiC, leading to a poor interface bonding strength between TiC and Cu, thus the tensile strength of the sintered sample is destroyed. By adding a small amount of Ti, the bonding strength of the interface between TiC and Cu can be effectively optimized, thereby the mechanical strength of the samples is improved, showing an increased hardness and tensile strength . Skillfully use the relationship between hardness and tensile strength curve to intuitively show the bonding strength of the micro interface from the macro characteristics. The reaction between dissolved Ti and stoichiometric TiC and the decomposition of stoichiometric TiC cause the formation of near-surface non-stoichiometric TiC x ( x < 1) with a marked metal-like electronic structure, which is the fundamental reason for the optimization of the interface bonding between TiC particles and Cu matrix. In the process of powder metallurgy , it is a promising strategy to enhance the composite materials by adjusting the stoichiometry of ceramic to form metal-like electronic structure and alter the bonding strength of ceramic/metal interface.
研究领域:
材料科学
·
粉末冶金
·
金属基复合材料
·
界面工程
·
固态加工
✓ 已验证
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2024
·
IF 8.2
Zhenzhen Jia,Qiuxin Liu,Jiatang Hu,Shiyu Li,Hujunjie Chen
Water hypoxia and metal pollution are commonly co-existed in urbanized estuaries. This study focuses on the effect of an extended dissolved oxygen (DO) full-life dynamics (86 days) on metal behavior across the sediment-water interface through laboratory microcosms from two typical zones in Pearl River Estuary. Combining our time-series results of concentrations and fluxes, it showed that Co, Ni, and Zn consistently presented a release-precipitation-release trajectory with an oxic-hypoxic-anoxic-reoxic transition, characterized with highly variable behavior in the hypoxic-anoxic hotmoments. In parallel, changing DO dynamics significantly activated a repartitioning process of Co, Ni, and Zn among several species and elevated their risk in sediments, promoting the formation of more labile species in the 0–10 mm hotspots, where metals sensitively responded. Over DO transition, metal cycling was tightly co-related with Fe, Mn, and S elements. It was found that Mn was dominated in low oxygen-hypoxic period, but switched to S and Fe in anoxic stage, limiting sustained metal liberation to overlying water. Enlarging this experiment to practice, released Zn fluxes from sediments in hypoxic summer could contribute about ∼2.0% to their stocks in water column, while increase to 20% (1 m bottom water) in highly-stratified zones. This study has certain significance in understanding the long-term metal behavior and fate in estuarine regions, even lakes and reservoirs.
研究领域:
环境科学
·
地球化学
·
水生生态学
·
污染生态学
·
生物地球化学
·
环境毒理学
·
河口学
✓ 已验证
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2017
·
IF 4.075
Guangshun Wu,Lei Chen,Li Liu
Effects of silane and silica enrichment of carbon fibers (CFs) on interfacial properties of methylphenylsilicone resin (MPSR) composites were investigated. CFs were oxidized, grafted with 3-aminopropyltriethoxysilane (APS) and then modified with silica nanoparticles prepared by the sol-gel polymerization of tetraethoxysilane (TEOS). Chemical structures of CFs were characterized by confirming the successful grafting. Scanning electron microscopy (SEM) showed a uniform distribution of silica nanoparticles on the CFs surface. The interlaminar shear strength (ILSS) and impact toughness of silanized CF (CF-Siloxane) composites were 12.05% and 7.46% higher than those of untreated composites. However, ILSS and impact toughness of the hybrid fiber (CF/Si) composites obtained from the hydrolysis of different concentrations TEOS improved significantly, especially for grafting silica enrichment with the TEOS concentration of 0.05 mol/L (CF/Si0.05), increasing 45.64% in ILSS and 29.59% in impact properties. Moreover, the hydrothermal aging resistance was also improved greatly. Meanwhile, functionalization processes did not decrease fiber tensile strength .
研究领域:
复合材料科学
·
高分子材料
·
表面改性
·
界面工程
·
材料化学
✓ 已验证
DOI
高影响因子
Science China-Materials
·
2021
·Vol. 64
·期 6
·1378-1385
·
IF 8.273
Fu Yuanyuan,Ma Cheng
The interplay between solid electrolytes and electrodes is of vital importance to the performance of all-solid-state Li batteries. Recently, halide superionic conductors have emerged as a new family of high-performance solid electrolytes, but their compatibility with Li metal, i.e., the anode with the highest theoretical capacity, has not been systematically studied. Here, we investigate the interaction between Li metal and two representative halide solid electrolytes: Li 3 YCl 6 and Li 3 YBr 6 . Both materials are found to form interphases with Li, similar to most solid electrolytes. However, the interphases observed here contain electronic conducting components, which are detrimental to their compatibility with Li. By elucidating this phenomenon, the present study provides guiding principles for improving the Li compatibility of halide solid electrolytes.
研究领域:
材料科学
·
电化学
·
固态离子学
·
能源存储
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
S.Z. Zhang,X.L. Wang,X.H. Xia,Z.J. Yao,Y.J. Xu,D.H. Wang,D. Xie,J.B. Wu,C.D. Gu,J.P. Tu
Interfacial issues have been the main obstacle to the development of solid-state batteries . In this work, we design a solid hybrid polymer electrolyte based on poly-(ethylene glycol) diacrylate and succinonitrile (PSSE) with a liquid state precursor. An intimate interface between PSSE and Li 4 Ti 5 O 12 @vertical graphene (LTO@VG) electrode with three-dimensional array structure is cleverly constructed by infiltrating fluid precursor of PSSE into vertical pores of LTO@VG followed by polymerization and solidification of PSSE. The quasi-solid-state LTO@VG//PSSE//Li and LiFePO 4 //PSSE//LTO@VG full cells exhibit superior electrochemical performance since the active materials are closely contacted by the conductive skeleton and ion-conductive electrolyte. The LTO@VG//PSSE//Li cells maintain 85.7% capacity retention after 400 cycles at 2 C and the LFP//PSSE//LTO@VG full cells still reach 99.0% capacity retention after 200 cycles at 0.5 C. This novel strategy for interface engineering paves the way for achieving high-performance solid-state batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
高分子化学
·
纳米材料
·
界面科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）