ADVANCED MATERIALS
·
2025
·
IF 26.8
Xiaokang Gu,Qiannan Zhang,Qian Chen,Zhilin Yang,Qingwei Zhai,Yuying Jiao,Jinghan Zuo,Huiping Duan,Pengbo Zhai,Yongji Gong
Under harsh conditions, such as high-rate and low-temperature charging, part of Li ions cannot intercalate into the graphite (Gr) particles and will form dendrite-like Li plating, causing capacity fading and serious safety hazards in commercial lithium-ion batteries (LIBs). Herein, instead of eliminating the Li plating, a Li plating regulation strategy that transforms dead Li plating into reversible active Li plating is proposed by using a lithium dendrite inhibitor to realize safe and long-lifespan LIBs. Remarkably, only 1 wt.% single-atom manganese (SAMn) in the Gr anode (Gr-SAMn) is sufficient to achieve a significant improvement, thus both the volumetric and mass-energy density remain roughly unaffected. The amount of dead Li on the Gr anode can be reduced by 90%, thereby enabling much-improved pouch cell performance at high rates and low temperatures. The capacity retention of the Gr-SAMn||NCM811 pouch cell is 86.2% (23.0% higher than that of the pristine Gr||NCM811 pouch) for 1500 cycles at 2 C, and the cell can even be cycled at 5C charge. Even cycling at −20 °C, the average coulombic efficiency (CE) can be improved from 97.95% to 99.94% by using SAMn additive. Hence, this promising strategy provides a novel alternative to solve the Li plating issue.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
PubMed
高影响因子
Joule
·
2020
·
IF 29.155
Wuhai Yang,Xiaofan Du,Jingwen Zhao,Zheng Chen,Jiajia Li,Jian Xie,Yaojian Zhang,Zili Cui,Qingyu Kong,Zhiming Zhao,Cunguo Wang,Qichun Zhang,Guanglei Cui
Despite their intrinsic safety and cost-effectiveness, aqueous zinc (Zn)-organic batteries have been struggling with the rapid performance degradation arising from the poor reversibility of Zn anodes and the dissolution of cathodes. Here, we present a new aqueous eutectic electrolyte by coupling a hydrated Zn salt (Zn(ClO 4 ) 2 ·6H 2 O) exclusively with a neutral ligand (succinonitrile) to mitigate these issues. The unique aqua Zn 2+ solvates with a succinonitrile-assisted solvation shell enable an unusual Zn/Zn 2+ reversibility of 98.4% Coulombic efficiency along with smooth Zn deposition. Moreover, all water molecules contribute to the formation of the eutectic network, resulting in a delayed oxidation and suppressed solvating ability. When a quinone-based polymer material (38 wt % sulfur content) is utilized as a cathode, the Zn-organic battery with this aqueous eutectic electrolyte exhibits an unprecedented cyclability with a low capacity decay rate (0.004% per cycle over 3,500 cycles) and superior low-temperature performance.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Energy Storage Materials
·
2024
·
IF 18.9
Laibing Luo,Kean Chen,Ruoyu Cao,Hui Chen,Miaomiao Xia,Along Zhao,Xiaoyang Chen,Weihua Chen,Zhongxue Chen,Yongjin Fang,Yuliang Cao
Lithium-ion batteries (LIBs) operating at low temperature has always been a significant challenge. In this work, Ethyl fluoroacetate (EFA) was utilized as a single solvent to design a low-temperature electrolyte (LTE). The weak Li + -solvent interaction facilitates fast de-solvation process and improved low-temperature performance, while the high oxidation resistance and fluorine-rich electrolyte/electrolyte interface induced by the fluorinated groups enables wide operating voltage and stable cycling of the LIBs . The EFA-based electrolyte endows the high-voltage (4.45 V) Graphite//LiCoO 2 pouch cell with prominent low-temperature adaptability (89.7 % capacity retention retains at −40 °C, and capable of charging at −20 °C) and outstanding cycling performance (87.7 % capacity retention after 400 cycles). This work sheds light on the design of high-voltage and low-temperature electrolytes for lithium-ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Haohe Huang,Fuguang Ban,Zhijun Zhang,Chongxing Huang
Cellulose is highly susceptible to adverse effects under wet-low-temperature, and high-temperature conditions, leading to a significant decline in performance. This study employs xylan as a compatibilizer to co-dissolve cellulose/lignin/xylan in an ionic liquid, forming a composite coating on filter paper through hot-press infiltration. The experimental results demonstrate that the composite coated paper fabricated using this approach exhibits superior mechanical properties, with dry and wet tensile strengths of 50.75 MPa and 15.20 MPa, respectively, compared to those of untreated filter paper (18.66 MPa and <2 MPa). Additionally, the water absorption rate and water vapor transmission rate decreased significantly, from 219.92 % and 670.14 m 2 g −1 to 83.40 % and 172.96 m 2 g −1 , respectively. The mechanism behind the enhanced wet-low-temperature strength of composite-coated paper after high-temperature aging was also investigated. Results demonstrate that compared to the coated paper without lignin/xylan additives, which exhibited wet-low-temperature tensile strengths of 2.92 MPa, the lignin/xylan-added coated paper maintained tensile strengths of 8.26 MPa under similar conditions. Furthermore, the presence of lignin/xylan significantly mitigates the formation of pores and cracks in the coated paper after high-temperature aging. This study provides a novel approach and theoretical guidance for utilizing wood fiber materials in extreme packaging environments.
研究领域:
材料科学
·
林业工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2025
·
IF 8
Qingyuan Ma,Hongwei He,Wenwen Yu,Jianjun Xu,Quanxin Xu,Jiaqi Xue,Yushi Jin,Rong Zhu,Chen Han,Zhengkun Wang,Chen Cui,Jie Ma,Fuyong Liu,Heng Zhang,Huayun Du
Highly efficient regeneration of the aging SBS modified bitumen (SMB) is crucial for promoting the achievement of low-carbon development goals. Restoring the structure or performance of the aged SBS is the focus of the present work. Many studies have proved that the high temperature performance of aging SMB is deteriorated by using epoxy-type structural repair agent. Literatures have proved that epoxy-type structural repair agents with benzene ring can make the high temperature performance improve slightly. Therefore, it is necessary to propose a method that can make the high temperature performance improve greatly. In this paper, a rejuvenator containing trimethylol propane triglycidyl ether (TMPTE) combined with vegetable oil (VO) was selected. At the same time, the epoxy structural repair agent containing benzene ring, i.e., E51 epoxy resin (ER) was also selected to compare these two rejuvenators on recovering the comprehensive properties of aging SMB. Through GPC, FM, AFM and TGA tests, ER repair agent has good recovery effect for SBS network structure and adhesion performance for aging SMB. While TMPTE repair agent has good recovery effect for high temperature stability of the aged SMB and molecular weight of the aged SBS. Through DSR and ductility tests, it was found that these two rejuvenators had outstanding recovery for low temperature performance of aging SMB. Through MSCR and soften point tests, it was found that the high temperature performance of the repaired SMB by TMPTE was close to non-aging SMB. This suggests that TMPTE/VO is more effective in restoring the high/low temperature performance of regenerated SMB as a whole. This study can provide guidance for the recovery of comprehensive performance of epoxy-type repair agents regenerated SMB in a cost-effective and environment friendly way.
研究领域:
材料科学
·
土木工程
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2021
·
IF 3.171
Guijia Cui,Hong Wang,Fengping Yu,Haiying Che,Xiaozhen Liao,Linsen Li,Weimin Yang,Zifeng Ma
NASICON-type Na 3 V 2 (PO 4 ) 3 is a promising electrode material for developing advanced sodium-ion batteries. Preparing Na 3 V 2 (PO 4 ) 3 with good performance by a cost-effective and large-scale method is significant for industrial applications. In this work, a porous Na 3 V 2 (PO 4 ) 3 /C cathode material with excellent electrochemical performance is successfully prepared by an agar-gel combined with freeze-drying method. The Na 3 V 2 (PO 4 ) 3 /C cathode displayed specific capacities of 113.4 mAh·g −1 , 107.0 mAh·g −1 and 87.1 mAh·g −1 at 0.1 C, 1 C and 10 C, respectively. For the first time, the 500-mAh soft-packed symmetrical sodium-ion batteries based on Na 3 V 2 (PO 4 ) 3 /C electrodes are successfully fabricated. The 500-mAh symmetrical batteries exhibit outstanding low temperature performance with a capacity retention of 83% at 0 °C owing to the rapid sodium ion migration ability and structural stability of Na 3 V 2 (PO 4 ) 3 /C. Moreover, the thermal runaway features are revealed by accelerating rate calorimetry (ARC) test for the first time. Thermal stability and safety of the symmetrical batteries are demonstrated to be better than lithium-ion batteries and some reported sodium-ion batteries. Our work makes it clear that the soft-packed symmetrical sodium ion batteries based on Na 3 V 2 (PO 4 ) 3 /C have a prospect of practical application in high safety requirement fields.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2023
·
IF 7.4
Tianwei Zhang,Shanjun Gao,Jianying Yu,Yanheng He,Xiaobing Han,Ronghua Zhuang
In this study, self-healing SBS (S-SBS) was first synthesized by introducing dynamic disulfide bonds into the molecular structure of SBS. Subsequently, a self-healing SBS modified bitumen (S-SMB) was prepared by blending of S-SBS and bitumen. The chemical structure of S-SBS and S-SMB was charactered by Fourier transform infrared spectrometer (FTIR) and Raman spectrometer. The physical properties, low-temperature rheological properties and self-healing performance of S-SMB were investigated. The results of FTIR and Raman showed that dynamic disulfide bonds were successfully introduced into the molecular structure of SBS. With the increase of dynamic disulfide bonds content in SBS molecular structure, the softening point and ductility of S-SMB enhanced, and the penetration was decreased. Fluorescence microscope showed that the S-SBS in S-SMB formed a complete crosslinking network structure compared to SMB. The bending beam rheometer illustrated that the low-temperature rheological properties and the cracking resistance of SMB were improved by introducing dynamic disulfide bonds. The fluorescence microscopy observation indicated that the crack in S-SBS can self heal. The fracture healing test and fatigue healing test demonstrated that dynamic disulfide bonds endow S-SMB with great self-healing performance. The fracture healing rate of S-SMB reached 58.7% after 4 h of healing, and the fatigue healing index reached 0.93 after 1 h of healing.
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
Journal of Energy Chemistry
·
2020
·
IF 7.216
Xiao-Shuan Chen,You Gao,Guo-Rui Zhu,Hui-Jun Chen,Si-Chong Chen,Xiu-Li Wang,Gang Wu,Yu-Zhong Wang
Lithium-sulfur (Li-S) batteries as extremely promising high-density energy storage devices have attracted extensive concern. However, practical applications of Li-S batteries are severely restricted by not only intrinsic polysulfides shuttle resulting from their concentration gradient diffusion and sluggish conversion kinetics but also serious safety issue caused by thermolabile and combustible polymer separators. Herein, it is presented for the first time that a robust and multifunctional separator with urchin-like Co-doped FeOOH microspheres and multiwalled carbon nanotubes (MWCNTs) as an interlayer simultaneously achieves to suppress polysulfides shuttle as well as improves thermotolerance and nonflammability of commercial PP separator. Accordingly, Li-S batteries with modified separator exhibit remarkable performance in a wide range temperatures of -25–100 °C. Typically, under 25 °C, ultrahigh initial capacities of 1441 and 827.29 mA h g −1 at 1 C and 2 C are delivered, and remained capacities of 936 and 663.18 mA h g −1 can be obtained after 500 cycles, respectively. At 0.1 C, the S utilization can reach up to 97%. Significantly, at 1 C, the batteries also deliver an excellent performance with remained capacities of high to 862.3, 608.4 and 420.6 mA h g −1 after 100, 300 and 450 cycles under 75, 0 and -25 °C, respectively. This work provides a new insight for developing stable and safe high-performance Li-S batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Chenye Wang,Yan Dai,Rongrong Cao,Lei Bai,Jie Zhang,Wenjia Wu,Weijie Kou,Jingtao Wang
Zwitterions, covalently tethered by cation and anion, show great potential in the development of safe and high-performance electrolyte owing to the inherent characteristics of non-volatility, non-flammability, and electrification but non migration. The interaction between cations and anions in zwitterionic-lithium salt electrolyte is supposed to influence the lithium ions (Li + ) migration efficiency, but being rarely studied. Herein, zwitterionic liquid (ZIL) electrolytes with three different anionic groups (−PO 4 − , −SO 3 − , −COO − ) were synthesized. We demonstrate that the −PO 4 − group with the most negative electrostatic potential exerts the strongest competitive coordination effect on Li + , weakening Li + -TFSI − binding and promoting lithium salt dissociation. This coordination also facilitates a lower migration energy barrier for Li + and lessens intermolecular forces between zwitterions, reducing the freezing point. The ZIL-P electrolyte with the −PO 4 − group shows high Li + transference number (0.54 at −40 °C) and ionic conductivity (1.57 × 10 −4 S cm −1 at −20 °C), outperforming most liquid electrolytes. The enhanced Li + transfer results in excellent cycling stability, with a 98.1% capacity retention after 500 cycles at 0.5C. Furthermore, the gel electrolyte constructed with ZIL-P and silicon-based framework improved battery performance: LFP|SiGE-ZIL-P|Li after 600 cycles with capacity retention rate of 98.5% at 0.5C and −20 °C.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Tiantian Wang,Lei Ni,Xu Sun,Hejie Lu,Haiqiang Li,Maosen Fu,Xiao Ma
Co-free binary cathode materials (LiNixMn1−xO2, x ≥ 0.5) are promising candidates for lithium-ion batteries (LIBs) due to their high specific capacity and low cost. The degradation of the low-temperature electrochemical performance of these materials not only hinders their practical application but also emerges as a critical research focus in energy storage technologies. In this work, the effect of Sm doping on the structure and electrochemical performance of LiNi0.55Mn0.45O2 (NM5545) cathode materials (x% Sm-NM5545, x = 0, 0.5, 1.0, 1.5) is systematically investigated over a wide temperature range (−10 to 45 °C). Sm doping significantly enhances the structural stability and enlarges interlayer spacing, which likely facilitates Li+ transport. Compared with undoped NM5545, the 1.0% Sm-NM5545 cathode materials exhibit remarkable improvements in capacity retention, which increases by 14.1%, 8.0%, and 9.4% after 100 cycles at temperatures of −10 °C, 25 °C, and 45 °C (1.0C, 3.0–4.45 V), respectively. Meanwhile, the discharge-specific capacity of 1.0% Sm-NM5545 cathode materials increases by 7.9 mA h g−1, 9.1 mA h g−1, and 12.9 mA h g−1 at the above respective temperatures. Electrochemical impedance spectroscopy and galvanostatic intermittent titration technique analyses confirm that Sm doping has enhanced the lithium-ion migration rate while reducing the charge transfer resistance in the modified materials. Furthermore, post-cycling characterization via scanning electron microscopy and X-ray photoelectron spectroscopy reveals that Sm doping effectively reinforces the structural integrity, suppresses crack propagation during high voltage cycling, and inhibits detrimental cathode–electrolyte interfacial reactions.
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 Nano
·
2024
·
IF 15.8
Xinping Chen,Zelin Li,He Zhao,Jie Li,Wenting Li,Ce Han,Yujuan Zhang,Lisi Lu,Jinxing Li,Xinping Qiu
The low ionic conductivities of aprotic electrolytes hinder the development of extreme fast charging technologies and applications at low temperatures for lithium-ion batteries (LIBs). Herein, we present an electrolyte with LiFSI in acetone (DMK). In DMK electrolytes, the solvation number is three, and solvent-separated ion pairs (SSIPs) are the dominant structure, which is largely different from other linear aprotic electrolytes where salts primarily exist as contact ion pairs (CIPs). With incompact solvation structures due to the weak solvation ability of DMK with Li+, the ionic conductivity reaches 45 mS/cm at room temperature. The percentage of SSIPs increases as temperatures decrease in DMK electrolytes, which is totally different from the carbonate-based electrolytes but greatly beneficial to low-temperature ionic conductivity. With the appropriate addition of VC and FEC, DMK-based electrolytes still exhibit a superhigh ionic conductivity. Even at −40 °C, the ionic conductivity is greater than 10 mS/cm. With DMK-based electrolytes, LIBs with thick LiFePO4 electrodes can be cycled at high rates and at low temperatures.
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 Materials Chemistry A
·
2024
·Vol. 12
·期 12
·6968-6982
·
IF 10.7
Jing Qi,Chengkai Lin,Shuqi Deng,Yinze Zuo,Hui Zheng,Xuechao Jiao,Wei Yan,Jiujun Zhang
Potassium (K) with higher abundance than lithium has been explored as an anode material for K metal batteries (KMBs) for possible application in large-scale energy storage. However, the unstable solid electrolyte interface (SEI) at the K anode due to uncontrolled growth of K dendrites is a challenge in KMB development. In this paper, a multifunctional interface containing Sb2O3 and reduced graphene oxide (rGO) on Cu foam to form a current collector (Cu@Sb2O3@rGO) is developed for a KMB anode through structural regulation, where the Cu form with a large surface area can reduce the volume change during charge and discharge processes, Sb2O3 can provide potassiophilicity toward uniform K plating and stripping to give a dendrite-free K anode, and rGO can provide abundant defects for increasing the ion transport and reaction kinetics. Such a Cu@Sb2O3@rGO current collector exhibits a remarkable reversibility of K plating/stripping for up to 600 cycles at 0.5 mA cm−2/2 mA h cm−2, and the formed Cu@Sb2O3@rGO@K anode demonstrates an extended cycle lifespan of 1300 hours under 0.2 mA cm−2/0.2 mA h cm−2 in symmetric cells. This anode-constructed PTCDA‖ Cu@Sb2O3@rGO@K full battery exhibits both exceptional cycling stability (over 2000 cycles) and outstanding rate capability (112.8 mA h g−1 at 10 C). Furthermore, even under extremely low temperature (−20 °C), this battery can still maintain an impressive 55% of its room temperature capacity. In situ Raman spectroscopic techniques and electrochemical methods including in situ EIS, half cell, symmetric cell, and full cell tests and theoretical DFT calculations are carried out to probe the structure–performance relationship and the reaction mechanisms for fundamental understanding toward further optimizing the performance of such the K anode and the corresponding KMBs. The strategy for stabilizing the K metal anode in this work may provide a guidance for further development of advanced low-temperature potassium metal batteries.
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
危险品化学品经营许可证（带存储）