A5041409626- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Advanced Battery Technologies Research
- Advanced battery technologies research
- Supercapacitor Materials and Fabrication
- Extraction and Separation Processes
- Inorganic Chemistry and Materials
- Chemical Synthesis and Characterization
- Conducting polymers and applications
- Semiconductor materials and interfaces
- Electrocatalysts for Energy Conversion
- Polyoxometalates: Synthesis and Applications
- Transition Metal Oxide Nanomaterials
- Synthesis and properties of polymers
- Semiconductor materials and devices
Karlsruhe Institute of Technology
2017-2023
Helmholtz-Institute Ulm
2017-2023
Qingdao Institute of Bioenergy and Bioprocess Technology
2014-2023
Chinese Academy of Sciences
2014-2015
Qufu Normal University
2014-2015
A sustainable, heat-resistant and flame-retardant cellulose-based composite nonwoven has been successfully fabricated explored its potential application for promising separator of high-performance lithium ion battery. It was demonstrated that this possessed good flame retardancy, superior heat tolerance proper mechanical strength. As compared to the commercialized polypropylene (PP) separator, such presented improved electrolyte uptake, better interface stability enhanced ionic conductivity....
Abstract Herein, a novel electrospun single‐ion conducting polymer electrolyte (SIPE) composed of nanoscale mixed poly(vinylidene fluoride‐ co ‐hexafluoropropylene) (PVDF‐HFP) and lithium poly(4,4′‐diaminodiphenylsulfone, bis(4‐carbonyl benzene sulfonyl)imide) (LiPSI) is reported, which simultaneously overcomes the drawbacks polyolefin‐based separator (low porosity poor wettability thermal dimensional stability) LiPF 6 salt (poor stability moisture sensitivity). The nanofiber membrane ( es...
Abstract Sodium‐ion batteries (SIBs), driven by sustainability and cost advantage, have been recognized as one of the most promising electrochemical energy storage devices. Electrolytes, unique component that not only ionically connect while insulating electronically electrodes but also determine eventual improvements in performance mainly regarding cycle life, Coulombic efficiency, density, safety, hold key to practical implementation SIBs. In this review, fundamental design principles Na +...
Inspired by Taichi, we proposed rigid-flexible coupling concept and herein developed a highly promising solid polymer electrolyte comprised of poly (ethylene oxide), (cyano acrylate), lithium bis(oxalate)borate robust cellulose nonwoven. Our investigation revealed that this new class possessed comprehensive properties in high mechanical integrity strength, sufficient ionic conductivity (3 × 10−4 S cm−1) at 60°C improved dimensional thermostability (up to 160°C). In addition, the iron...
LiMn2O4-based batteries exhibit severe capacity fading during cycling or storage in LiPF6-based liquid electrolytes, especially at elevated temperatures. Herein, a novel rigid–flexible gel polymer electrolyte is introduced to enhance the cyclability of LiMn2O4/graphite battery temperature. The consists robust natural cellulose skeletal incorporated with soft segment poly(ethyl α-cyanoacrylate). introduction effectively overcomes drawback poor mechanical integrity electrolyte. Density...
Enhanced solid-state ionic diffusion for high-power Na-ion and K-ion hybrid capacitors (SIHCs PIHCs) is usually attained via tailoring anode materials to the nanoscale, which inevitably requires costly preactivation processes practical applications. As an alternative nanoscaling, herein, we propose SIHC PIHC prototypes exploiting microsized graphite as host material cointercalation of diglyme-solvated Na+ or K+ activated carbon capacitor-type cathode material. Despite large grain size,...
Here, we report an aqueous/nonaqueous hybrid electrolyte based on sodium trifluoromethanesulfonate with expanded electrochemical window up to 2.8 V and high conductivity (∼25 mS cm–1 at 20 °C). The inherits the safety characteristic of aqueous electrolytes stability nonaqueous systems, enabling stable reversible operation Na3V2(PO4)3/NaTi2(PO4)3 sodium-ion battery.
Abstract Aqueous Na‐ion batteries may offer a solution to the cost and safety issues of high‐energy batteries. However, substantial challenges remain in development electrode materials electrolytes enabling high performance long cycle life. Herein, we report characterization symmetric battery with NASICON‐type Na 2 VTi(PO 4 ) 3 material conventional aqueous “water‐in‐salt” electrolytes. Extremely stable cycling for 1000 cycles at rate (20 C) is found highly concentrated owing formation...
The ionic transporting mechanism of single ion dominantly polyborate lithium salts and their superior performances.
Gel-type polymer electrolytes are very promising to replace liquid electrolytes, addressing the leakage concerns in batteries. In this work, we report a concentrated gel electrolyte for aqueous zinc-metal batteries, which manifests superior Zn stripping/plating reversibility and stability, combined with electrochemical stability window robust water-retention ability. Quasi-solid-state Zn/V2O5 batteries employing such an reach specific energy of 326 W h kg–1 at 20 mA g–1 based on cathode mass...
Abstract Lithium‐rich layered oxides (LRLOs) exhibit specific capacities above 250 mAh g −1 , i.e., higher than any of the commercially employed lithium‐ion‐positive electrode materials. Such high result in energies, meeting tough requirements for electric vehicle applications. However, LRLOs generally suffer from severe capacity and voltage fading, originating undesired structural transformations during cycling. Herein, eco‐friendly, cobalt‐free Li 1.2 Ni 0.2 Mn 0.6 O 2 (LRNM), offering a...
Utilization of high-capacity alloying anodes is a promising yet extremely challenging strategy in building high energy density alkali-ion batteries (AIBs). Excitingly, it was very recently found that the (de-)sodiation tin (Sn) can be highly reversible process specific glyme electrolytes, enabling capacities close to theoretical value 847 mA h g–1. The unique solid electrolyte interphase (SEI) formed on Sn electrodes, which allows sodiation regardless huge volume expansion, herein...
High-voltage sodium metal batteries are a highly intriguing battery technology in view of their resource sustainability, cost efficiency, and ultrahigh energy density. However, developing high-performance electrolyte, compatible with both high-voltage cathodes reactive anodes, is extremely challenging. In this work, we delicately formulate ternary phosphate composing cost-effective bis(trifluoromethane sulfonyl) imide salt, nonflammable triethyl (TEP) solvent, fluoroethylene carbonate (FEC)...
Although nickel-based polyanionic compounds are expected to exhibit a high operating voltage for batteries based on the Ni2+/3+ redox couple activity, some rare experimental studies electrochemical performance of these materials reported, resulting from poor kinetics bulk in both Li and Na nonaqueous systems. Herein, activity mixed-polyanionic framework Na4Ni3(PO4)2(P2O7) is reported first time. This novel material exhibits remarkably when cycled sodium cells carbonate- ionic liquid-based...
Aluminum is an appealing anode material for high-energy-density lithium-ion batteries (LIBs), owing to its low cost, environmental benignity, high specific capacity, and lower relative volume expansion compared with other alloying materials. However, both, the working capacity fading processes are not yet consistently comprehensively understood, which has largely hindered development. In this study, electrochemical process of aluminum anodes lithium systematically studied by combination...
The development of suitable electrode materials remains a great challenge for alternative battery technologies such as sodium-ion and potassium-ion batteries; especially with regard to the negative electrode. Herein, Fe-doped CeO2 (Ce0.9Fe0.1O2−δ), which has very recently been introduced new anode material lithium-ion batteries, is investigated an insertion-type active these technologies, offering high specific capacity good rate capability in half-cells full-cells. complementary combination...