ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Shuo Ma,Donghui Zhang,Zhongli Tang,Wenbin Li,Yanan Zhang,Yating Zhang,Kemeng Ji,Mingming Chen
High-voltage resistant quasi-solid-state polymer electrolytes (QSPEs) are promising for enhancing the energy density of lithium–metal batteries in practice. However, side reactions occurring at the interfaces between the anodes or cathodes and QSPEs considerably reduce the lifespan of high-voltage LMBs. In this study, a copolymer of vinyl ethylene carbonate (VEC) and poly(ethylene glycol) diacrylate (PEGDA) was used as the framework, with a cellulose membrane (CE) as the supporting layer. Based on density functional theory calculations, 1-butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (Pyr14TFSI), an ionic liquid, was screened because of its lowest unoccupied molecular orbital energy level as a modifying agent for the in situ P(VECx-EGy)/Pyrz/LiTFSI@CE QSPEs synthesis. Pyr14+, with a lithiophobic alkyl chain, forms a dense positive ion shielding layer on the protruding tips of deposited lithium, facilitating uniform and smooth lithium deposition. Pyr14TFSI assists in constructing a stable solid electrolyte interphase (SEI) layer on the Li surface enriched with LiF, Li3N, and RCOOLi. The modulation of lithium deposition behavior on the anode by Pyr14TFSI ensures stable Li plating/stripping for >1500 h. A Li–Cu cell exhibits stable cycling for >200 cycles at a current density of 0.05 mA cm–2, with an average Coulombic efficiency of 92.7%. In situ polymerization ensures that P(VECx-EGy)/Pyrz/LiTFSI@CE QSPEs exhibit excellent interface compatibility with the anode and the cathode. The CR2032 button cell Li|P(VEC1-EG0.06)/Pyr0.4/LiTFSI@CE|LiCoO2 demonstrates stable cycling with a negligible capacity decay of 0.083% per cycle for >390 cycles at 25 °C and 0.2 C when using a high-voltage LiCoO2 (4.45 V) cathode. Furthermore, a 7.1 mAh pouch cell achieves stable charge–discharge cycles, confirming the pronounced stability of the as-fabricated QSPE at the interfaces of the high-voltage LiCoO2 cathode and Li anode.
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
Materials Today Energy
·
2022
·
IF 9.257
Fei Zhao,Wei Deng,Daojie Dong,Xufeng Zhou,Zhaoping Liu
Reasonably designed artificial solid-electrolyte interphases (ASEI) are essential for reversible and stable lithium metal batteries . However, poor compatibility between heterogeneous interfaces remains a challenge for the ASEI to sustain the long-term stability of the lithium metal anodes . Herein, an interfacial compatible protective layer with interpenetrating Li–Sn alloy across the PVDF-HFP interphase (ISPI) is fabricated on the lithium to realize seamless integration of the organic/inorganic components in the interphase, and the interface between ASEI and metallic Li simultaneously. Compared to the double-layered and uniform protective layers that both have sharp joint interfaces, ISPI achieves enhanced mechanical stability and ensures homogeneous lithium deposition underneath it even with a high capacity of 5.0 mAh/cm 2 . Utilizing this interface-compatible ISPI-Li anode, the Li│Li symmetric cells perform stably at a super high current density of 20 mA/cm 2 with a capacity of 1 mAh/cm 2 for over 1000 cycles, and the full cells with ISPI-Li anodes exhibit outstanding cycling performance when coupling with LiFePO 4 or LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) cathodes. This work proposes a significant concept of designing artificial SEI with a seamlessly integrated interface for lithium metal anodes and uncovers the basic mechanism of interfacial compatibility as a key factor in achieving a highly reversible lithium anode for the practical usage of LMBs.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
Nano-Micro Letters
·
2024
·Vol. 16
·期 1
·1-12
·
IF 31.6
Wu Shuilin,Yang Yibing,Sun Mingzi,Zhang Tian,Huang Shaozhuan,Zhang Daohong,Huang Bolong,Wang Pengfei,Zhang Wenjun
A novel aqueous/aprotic electrolyte with low salt concentration (i.e., 0.5 m Zn(CF 3 SO 3 ) 2 +1 m LiTFSI) demonstrated an expanded electrochemical window, which can simultaneously stabilize Zn metal anode and increase the operation voltage of Zn-ion hybrid supercapacitors.
The coordination shell of the electrolyte induced by acetonitrile and LiTFSI can not only suppress the Zn corrosion and hydrogen evolution reaction but also promote the cathodic stability and ion migration, which is depicted by the density functional theory simulations together with experimental characterizations.
The Zn-ion hybrid supercapacitor based on the developed electrolyte can operate within 0–2.2 V in a wide temperature range with an ultra-long lifespan (> 120,000 cycles).
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 16
·7206-7220
·
IF 9.931
Tao Liang,Renzong Hu,Houpo Zhang,Hanyin Zhang,Hui Wang,Yunpeng Ouyang,Jun Liu,Lichun Yang,Min Zhu
A new ternary SnO2–Co–C composite is produced using a facile and scalable ball milling method, which has a microstructure that includes refined SnO2–Co hybrids embedded in graphite. The Co additives dramatically inhibit Sn coarsening in the lithiated SnO2, which enables highly reversible conversion reactions in the SnO2-based ternary composite during cycling. The electrodes exhibit high ICEs with an average of 80.8% and a reversible capacity of 780 mA h g−1 at 0.2 A g−1 after 400 cycles when the composite was manufactured via small planetary ball milling, and they achieve 875 mA h g−1 after 250 cycles when the material is prepared on a large-scale with a roller mill. Even at a high rate of 2 A g−1, the composite has a long lifetime and delivers 610 mA h g−1 after 1000 cycles. Furthermore, a stable capacity of 410 mA h g−1 can be also retained in a full cell combined with a LiFePO4 cathode and SnO2–Co–C anode when cycling within 2.3–3.4 V at 0.2C. The new ternary SnO2–Co–C composite demonstrates excellent comprehensive electrochemical performances, and it is a promising candidate anode material for use in practical applications.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 33
·期 2
·2208206
·
IF 19.924
Chaolin You,Wenbin Wu,Wangsheng Yuan,Peng Han,QianYu Zhang,Xi Chen,Xinhai Yuan,Lili Liu,Jilei Ye,Lijun Fu,Yuping Wu
Traditional aqueous energy storage devices are difficult to operate at low temperatures owing to the poor ionic conductivity and sluggish interfacial dynamics in frozen electrolytes. Herein, the low-cost brine refrigerants for food freezing and preservation as electrolytes, and unexpectedly realize high ionic conductivity and stable operation of an aqueous storage device at low temperatures are demonstrated. A CaCl 2 brine refrigerant electrolyte (BRE) with a low freezing point −55 °C and high ionic conductivity (10.1 mS cm −1 at −50 °C) is developed for supercapacitors (SCs), which retains 80% of the room temperature capacity at −50 °C and exhibits ultra-long cycle life with excellent capacity retention of 92% over 98,500 cycles, outperforming the other SCs which can be operated below −40 °C in literature. Moreover, the SCs with MgCl 2 and NaCl BREs can also be operated successfully with excellent cycle stability and high-capacity retention at low temperatures of −30 and −20 °C, respectively. Fundamental correlation between various cations and their effect on the freezing point reduction of aqueous electrolytes is revealed via Raman investigation and molecular dynamics simulations. This study provides a rational design strategy for green, inexpensive, and safe low-temperature aqueous electrolytes for energy storage devices.
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
Journal of Energy Chemistry
·
2023
·
IF 13.1
Haiping Lei,Jiguo Tu,Suqin Li,Jiacheng Wang,Zheng Huang,Zhijing Yu,Shuqiang Jiao
Aluminum-selenium (Al-Se) batteries, which possess a high theoretical specific capacity of 1357 mA h g −1 , represent a promising energy storage technology. However, they suffer from significant attenuation of capacity and low cycle life due to the shuttle effect. To mitigate the shuttle effect induced by soluble selenium chloroaluminate compound that tends to migrate towards the negative electrode, a quasi-solid-state Al-Se battery was fabricated through the synthesis of a multi-aperture structure quasi-solid-state electrolyte (MOF@GPE) based on metal–organic framework (MOF) material and gel-polymer electrolyte (GPE). The high ionic conductivity (1.13 × 10 −3 S cm −1 ) of MOF@GPE at room temperature, coupled with its wide electrochemical stability window (2.45 V), can facilitate ion transport kinetics and enhance the electrochemical performance of Al-Se batteries. The MOF@GPE-based quasi-solid-state Al-Se batteries exhibit outstanding long-life cycling stability, delivering a high specific discharge capacity of 548 mA h g −1 with a maintained discharge specific capacity of 345 mA h g −1 after 500 cycles at a current density of 200 mA g −1 . The stable ion transmission and high ion transport kinetics in MOF@GPE can be attributed to the stable structure and permeable channel of MOF , which effectively captures the soluble selenium chloroaluminate compound and further restrains the shuttle effect, resulting in improved cycling performance.
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 THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 8
·082521
·
IF 4.386
Biao Geng,Wenxuan Hu,Xing Wu,Miao Du,Guorong Shan,Qiang Zheng
NiCo-based layered double hydroxides (NiCo-LDHs) have plenty of superior properties as electrode materials of supercapacitors, while the poor cycle performance heavily limits their application. An effective strategy to tackle this issue is to dope inactive Al that could stabilize the metallic layers to form ternary hydroxides. However, the desired ternary electrodes with appropriate content of Al3+ can hardly be prepared by conventional electrodeposition due to the great difference in solubility product constants (Ksp) of corresponding hydroxides, where the non-electroactive Al(OH)3 (Ksp = 1.3 × 10‒33) are preferentially deposited than the hydroxides of nickel and cobalt (Ksp = 2.0 × 10‒15, 1.6 × 10‒15). Here, we propose a novel electrodeposition method assisted by F‒ to control Al3+ content in NiCoAl-LDHs. By adjusting the concentration of F‒ in the electrolyte, Al3+ content, as well as the morphology and electrochemical performance of the electrodes, could be manipulated. With the optimum ratio of F− to Al3+, the as-obtained electrode shows high specific capacitance along with a long lifespan (54.1%, 10000 cycles). An asymmetric supercapacitor is assembled using active carbon as the negative electrodes, which displays the maximal energy density of 35.5 Wh kg−1 at the power density of 477.3 W kg−1, with a long lifespan (75%, 10000 cycles).
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
GREEN CHEMISTRY
·
2020
·Vol. 22
·期 13
·4252-4258
·
IF 9.48
Xinpeng Han,Xiaojun Wang,Muyao Han,Jie Sun
Excessive stress has deteriorated the energy crisis and environmental problems; therefore, introducing a new rechargeable battery system for large-scale energy storage and electric vehicles (EVs) has become a major concern. Recently, phosphorus (P) anode as one of the promising candidates for fast-charging lithium-ion batteries (LIBs) has gained significant attention for safe EVs due to its low cost, high energy density and relatively high lithiation voltage (ca. 0.7 V vs. Li+/Li). However, its flammability, unavoidable side reactions with the electrolyte and large volumetric variation (∼300%) during cycling limit its large-scale employment. Herein, a localized high-concentration flame-retardant LiFSI-based electrolyte has been reported to simultaneously construct an elastic and robust LiF-rich solid electrolyte interface (SEI) both at the P anode and sulfur cathode. Thus, a new Li3P-sulfur full battery system based on the pre-lithiated P anode and the sulfurized pyrolyzed poly(acrylonitrile) cathode was built, delivering a high capacity retention of 97.1% after 600 cycles at 1 A g−1. This battery system avoids some fatal flaws of the Li–S battery, including Li dendrite formation and thermal instability. This work provides an alternative direction to obtain green and long-life batteries for commercial availability.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
Energy & Environmental Science
·
2017
·Vol. 10
·期 4
·941-949
·
IF 29.518
Yang Wang,Wenhui Lai,Ni Wang,Zhi Jiang,Xuanyu Wang,Peichao Zou,Ziyin Lin,Hong Jin Fan,Feiyu Kang,Ching-Ping Wong,Cheng Yang
Developing supercapacitor electrodes with an ultra-long cycle life and a high specific capacitance is critical to the future energy storage devices. Herein, we report a scalable synthesis technology of mixed-valence manganese oxide nanoparticles anchored to reduced graphene oxide (rGO/MnOx) as the high-performance supercapacitor electrodes. First, 2-dimensional (2D) δ-MnO2 nanosheets are formed on a graphene oxide (GO) template, which is then in situ reduced by hydrazine vapour to mixed-valence manganese oxide nanoparticles evenly distributed on a rGO conductive network. The obtained rGO/MnOx electrode material exhibits a high specific capacitance of 202 F g−1 (mass loading of 2 mg cm−2), a large areal specific capacitance of 2.5 F cm−2 (mass loading of up to 19 mg cm−2), and a super-long-life stability of 106% capacitance retention after 115 000 charge/discharge cycles. By using an ionic liquid electrolyte and an activated carbon anode, asymmetric supercapacitors (AScs) are also constructed and can be packaged into a high performance miniaturized energy storage component in either a tailorable or surface mountable configuration. Our ASc shows superior performance characteristics, with typical figures of merit including maximum energy densities of 47.9 W h kg−1 at 270 W kg−1 and 19.1 W h kg−1 at the maximum power density of 20.8 kW kg−1. The capacitance retention of the ASc is 96% after 80 000 charge/discharge cycles, which is the most excellent stability performance in an ionic liquid electrolyte as compared with the recently reported pseudo-supercapacitors. This technology may find vast applications in future miniaturized portable and wearable electronics.
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
Journal of Water Process Engineering
·
2022
·
IF 7.34
Bochen Li,Yuefei Wang,Guoping Xiao,Se Shi,Peiqi Zhao,Ruxi Feng,Haiquan Zhang,Yihui Yuan,Hui Wang,Tao Liu,Ruizhi Zhang,Ning Wang
Uranium is an important nuclear element, and its efficient recovery is of great significance to nuclear industry and to nuclear safety. Herein, we rationally design robust antifouling fiber membranes (Anti-NH 2 -AO FMs) by facilely grafting two novel ligands on porous surfaces. The efficient ligands, i.e., NH 2 -AO and GSH, endow the membranes with rapid U-capture rate, good hydrophilicity and antifouling ability. Anti-NH 2 -AO FMs display porous fiber network structure, good flexibility, and high mechanical strength (9.0 MPa). The uranium capture rate reaches up to 167 mg g −1 h −1 in the first two hours, and they can reduce uranium to 11 ppb in 2 ppm uranium-contaminated water, which is below the drinking water limit. Furthermore, Anti-NH 2 -AO FMs still exhibit very high seawater permeability (6186 L m −2 h −1 bar −1 ) and flux recovery ratio (95.12 %) after three seawater fouling cycles. The imaging tests visually demonstrate their antiadhesion to the bacteria. In addition, they have good selectivity and long service life (10 cycles of adsorption-desorption). Kinetics models and XPS analyses illustrate the uranium adsorption mechanisms. Compared with the current membranes and fibers, the Anti-NH 2 -AO displays the advantages of exceptional properties and easy preparation, and we believe that it possesses great potential in the practical uranium recovery.
研究领域:
材料科学
·
环境工程
·
核能技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Anxin Li,Minfeng Chen,Qinghua Tian,Xiang Han,Jizhang Chen
With the increasing popularity of aqueous zinc-ion batteries , extensive research has been dedicated to mitigating dendritic growth and parasitic reactions for zinc metal anodes. While zinc foil is currently used as a common anode, zinc powder (Zn-P) turns out to be a promising alternative. However, Zn-P is more prone to experience corrosion and induce hydrogen evolution due to its larger specific surface area, thereby resulting in poor cyclability for Zn-P-based batteries. In this study, a simple yet highly effective strategy is developed to modify Zn-P with in-situ formed indium metal protective layer that owns larger hydrogen evolution overpotential than zinc metal. The modified Zn-P is combined with nanocellulose and carbon black to form a composite electrode, which can effectively resist corrosion and hydrogen evolution, facilitate desolvation process, and promote zinc deposition kinetics. Thanks to that, the modified Zn-P realizes significantly improved cumulative zinc plating capacity of 500 mAh cm −2 during symmetric cell test and the assembled Zn//MnO 2 battery achieves impressive capacity retention of 97.6% after 2000 cycles. Overall, the composite electrode not only outperforms its unmodified counterpart but also exhibits distinct advantages over previously reported Zn-P-based electrodes. This work reveals a universal pathway to modify metal powder electrodes towards high-performance batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Shuang Ma,Daping Qiu,Long Zhang,Xuecheng Liu,Xiaolei Ren,Jinhang Dai,Xingxing Gu,Yanglong Hou
Lithium–sulfur batteries demonstrate significant potential as contenders for next-generation high-energy storage systems. However, the severe shuttle effect of polysulfides and the likelihood of thermal runaway using sulfur cathode and lithium anode result in swift performance deterioration and associated safety hazards, which significantly hinders their progress. Hence, this study develops a novel RB binder owning multifunctional properties, i.e., accommodating the sulfur cathode volume expansion, suppressing the lithium polysulfides shuttle and lithium dendrite growth, promoting Li + transfer and reaction kinetics, as well as reducing the sulfur cathode's flammability, to tackle the issues. By using such a novel and functional binder, the lithium–sulfur battery demonstrates a remarkable initial capacity of 1001.6 mAh g −1 at 1C, along with excellent capacity reversibility, achieving a capacity decay rate of merely 0.027% per cycle at a high rate of 4C. Moreover, even with an increased sulfur load of 5.0 mg cm −2 , it sustains an area capacity of ≈3 mAh cm −2 after 300 cycles at 0.5 C. This multifunctional water-soluble binder with flame retardancy provides a competitive choice for realizing high-rate, high-safety, and long-life lithium–sulfur batteries.
研究领域:
能源材料科学
·
电化学
✓ 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）