A5100664695- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Advanced battery technologies research
- Supercapacitor Materials and Fabrication
- Fuel Cells and Related Materials
- MXene and MAX Phase Materials
- Advanced NMR Techniques and Applications
- Electrocatalysts for Energy Conversion
- Analytical Chemistry and Sensors
- X-ray Diffraction in Crystallography
- Covalent Organic Framework Applications
- Conducting polymers and applications
- Catalytic Processes in Materials Science
- Odor and Emission Control Technologies
- Radioactive element chemistry and processing
- Crystallization and Solubility Studies
- Advanced Condensed Matter Physics
- Crystallography and molecular interactions
- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Carbon Dioxide Capture Technologies
- Nanoparticles: synthesis and applications
- Semiconductor materials and devices
- Chemical Synthesis and Characterization
Tongji University
2012-2025
Center for NanoScience
2025
Center for Excellence in Education
2025
National Center for Nanoscience and Technology
2021-2025
China University of Geosciences
2021-2025
University of Chinese Academy of Sciences
2018-2024
Institute of Physics
2021-2024
Chinese Academy of Sciences
2013-2024
National Laboratory for Superconductivity
2024
Hainan University
2021-2024
Solving the problems with Li-air batteries come as close possible to theoretical limits for energy density in a battery. By weight, this is roughly 10 times higher than conventional lithium-ion and would be sufficient power cars range comparable those gasoline engines. But engineering battery has been challenge. Liu et al. managed overcome remaining challenges: They were able avoid electrode passivation, turn limited solvent stability into an advantage, eliminate fatal caused by superoxides,...
A non-conjugated polymer acceptor PF1-TS4 was firstly synthesized by embedding a thioalkyl segment in the mainchain, which shows excellent photophysical properties on par with fully conjugated polymer, low optical band gap of 1.58 eV and high absorption coefficient >105 cm-1 , LUMO level -3.89 eV, suitable crystallinity. Matched donor PM6, PF1-TS4-based all-PSC achieved power conversion efficiency (PCE) 8.63 %, is ≈45 % higher than that device based small molecule counterpart IDIC16....
The parasitic reactions associated with reduced oxygen species and the difficulty in achieving high theoretical capacity have been major issues plaguing development of practical nonaqueous Li-O2 batteries. We hereby address above by exploring synergistic effect 2,5-di-tert-butyl-1,4-benzoquinone H2O on chemistry a battery. Water stabilizes quinone monoanion dianion, shifting reduction potentials to more positive values (vs Li/Li+). When water are used together (largely) battery, cell...
The high weight fraction of the electrolyte in lithium–sulfur (Li–S) full cell is primary reason its specific energy much below expectations. Thus far, it still a challenge to reduce volume Li–S batteries owing their cathode porosity and depletion from Li metal anode. Herein, we propose an ultralight (0.83 g mL−1) by introducing weakly-coordinating Li-compatible monoether, which greatly reduces within whole also enables pouch functionality under lean-electrolyte conditions. Compared using...
Abstract Non‐aqueous Li–O 2 batteries are promising for next‐generation energy storage. New battery chemistries based on LiOH, rather than Li O , have been recently reported in systems with added water, one using a soluble additive LiI and the other solid Ru catalysts. Here, focus is mechanism of Ru‐catalyzed LiOH chemistry. Using nuclear magnetic resonance, operando electrochemical pressure measurements, mass spectrometry, it shown that discharging forms via 4 e − oxygen reduction reaction,...
Abstract The lithium metal anode (LMA) instability at deep cycle with high utilization is a crucial barrier for developing (Li) batteries, resulting in excessive Li inventory and electrolyte demand. This issue becomes more severe capacity‐type lithium–sulfur (Li–S) batteries. High‐concentration or localized high‐concentration electrolytes are noted as effective strategies to stabilize but usually lead density (>1.4 g mL −1 ). Here we propose bifunctional fluorinated silane‐based low of...
An electrochemical couple of lithium and sulfur possesses the highest theoretical energy density (>2600 Wh/kg) at material level. However, disappointingly, it is out place in primary batteries due to its low accessible cell level (≤500 poor storage performance. Herein, a low-density methyl tert-butyl ether was tailored for an ultralight electrolyte (0.837 g/mL) with protective encapsulation solvation structure which reduced weight (23.1%), increased utilization capacity (38.1%),...
LiI-promoted LiOH formation in Li-O2 batteries with wet ether electrolytes has been investigated by Raman, nuclear magnetic resonance spectroscopy, operando pressure tests, and molecular dynamics simulations. We find that is a synergistic effect involving both H2O LiI additives, whereas either alone Li2O2 forms. generated via nominal four-electron oxygen reduction reaction, the hydrogen coming from O2 H2O, fewer side reactions than typically associated formation; presence of parasitic...
Li–Fe antisite defects are commonly found in LiFePO4 particles and can impede or block Li diffusion the single-file channels. However, due to their low concentration (∼1%), effect of on has only been systematically investigated by theoretical approaches. In this work, exchange between solid (92.5% enriched with 6Li) liquid electrolyte solution (containing natural abundance Li, 7.6% 6Li 92.4% 7Li) was measured as a function time both ex situ solid-state nuclear magnetic resonance experiments....
Superoxide-based nonaqueous metal-oxygen batteries have received considerable research attention as they exhibit high energy densities and round-trip efficiencies. The cycling performance, however, is still poor. Here we study the characteristic of a Na-O2 battery using solid-state nuclear magnetic resonance, Raman spectroscopy, scanning electron microscopy. We find that poor performance primarily caused by side reactions stemming from chemical aggressiveness NaO2 both solid-phase dissolved...
MoS2 has attracted a lot of interest in the field lithium-ion storage as an anode material owing to its high capacity and two-dimensional (2D)-layer structure. However, electrochemical properties, such rate capability cycling stability, are usually limited by low conductivity, volume variation, polysulfide dissolution during lithiation/delithiation cycling. Here, designed two-layer carbon-coated MoS2/carbon nanofiber (MoS2/C/C fiber) hybrid electrode with double-layer carbon coating was...
Compared to nanomaterials exposing nonpolar facets, polar-faceted nanocrystals often exhibit unexpected and interesting properties. The electrostatic instability arising from the intrinsic dipole moments of polar however, leads different surface configurations in many cases, making it challenging extract detailed structural information develop structure-property relations. widely used electron microscopy techniques are limited because volumes sampled may not be representative, they provide...
Redox-active organic materials have emerged as promising alternatives to conventional inorganic electrode in electrochemical devices for energy storage. However, the deployment of redox-active practical lithium-ion battery is hindered by their undesired solubility electrolyte solvents, sluggish charge transfer and mass transport, well processing complexity. Here, we report a new molecular engineering approach prepare polymers intrinsic microporosity (PIMs) that possess an open network...
Abstract Ti–Nb–O binary oxide materials represent a family of promising intercalating anode for lithium‐ion batteries. In additional to their excellent capacities (388–402 mAh g –1 ), these show safety characteristics, such as an operating potential above the lithium plating voltage and minimal volume change. Herein, this study reports new member in family, Ti 2 Nb 14 O 39 , advanced material. porous spheres (Ti ‐S) exhibit defective shear ReO 3 crystal structure with large unit cell amount...
Mobi-Li-ty: Lithium mobility, as a function of temperature during battery cycling, can be simply monitored by using in situ T2' relaxation measurements. Since Li dynamics are strongly related to structural properties, the changes used detect changes, such ordering.
A lightweight and binder-free electrode, composed of lignin fibers@carbon nanotubes as sulfur host graphene current collector, is applied for ultrastable Li–S batteries.
Lithium-rich layered oxide is an attractive candidate for high-energy-density cathodes in lithium-ion batteries. However, the low cycling performance and poor rate capability severely impede its commercial applications, among which a serious barrier, because it will lead to energy fading during fast charging/discharging. To cure this issue, we report efficient strategy fabricate high-rate cycling-stable hierarchically structured lithium-rich oxide, Li1.2Mn0.54Ni0.13Co0.13O2+δ, by using...