A5100754434- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced battery technologies research
- Advanced Battery Technologies Research
- Electron and X-Ray Spectroscopy Techniques
- Electrocatalysts for Energy Conversion
- Ferroelectric and Piezoelectric Materials
- Dielectric properties of ceramics
- Advanced X-ray Imaging Techniques
- Microwave Dielectric Ceramics Synthesis
- X-ray Spectroscopy and Fluorescence Analysis
- Supercapacitor Materials and Fabrication
- Extraction and Separation Processes
- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Iron-based superconductors research
- Catalytic Processes in Materials Science
- Molecular Junctions and Nanostructures
- Graphene research and applications
- Advanced Electron Microscopy Techniques and Applications
- Porphyrin and Phthalocyanine Chemistry
- Gas Sensing Nanomaterials and Sensors
- Semiconductor materials and devices
- Force Microscopy Techniques and Applications
- Perovskite Materials and Applications
Chinese Academy of Sciences
2015-2025
University of Science and Technology of China
2021-2025
National Synchrotron Radiation Laboratory
2021-2025
ShanghaiTech University
2018-2025
Tianmu Lake Institute of Advanced Energy Storage Technologies (China)
2018-2025
Zhengzhou University of Light Industry
2024
Shanghai Institute of Microsystem and Information Technology
2015-2024
Hebei Medical University
2024
Second Hospital of Hebei Medical University
2024
Chang'an University
2023
Rechargeable aqueous Zn-ion batteries are attractive cheap, safe and green energy storage technologies but bottlenecked by limitation in high-capacity cathode compatible electrolyte to achieve satisfactory cyclability. Here we report the application of nonstoichiometric ZnMn2O4/carbon composite as a new Zn-insertion material Zn(CF3SO3)2 electrolyte. In 3 M solution that enables ∼100% Zn plating/stripping efficiency with long-term stability suppresses Mn dissolution, spinel/carbon hybrid...
Although alkaline zinc-manganese dioxide batteries have dominated the primary battery applications, it is challenging to make them rechargeable. Here we report a high-performance rechargeable system with an aqueous mild-acidic zinc triflate electrolyte. We demonstrate that tunnel structured manganese polymorphs undergo phase transition layered zinc-buserite on first discharging, thus allowing subsequent intercalation of cations in latter structure. Based this electrode mechanism, formulate...
Developing high-performance batteries relies on material breakthroughs. During the past few years, various in situ characterization tools have been developed and become indispensible studying eventual optimization of battery materials. However, soft X-ray spectroscopy, one most sensitive probes electronic states, has mainly limited to ex experiments for research. Here we achieve operando absorption spectroscopy lithium-ion cathodes. Taking advantage elemental, chemical surface sensitivities...
Conversion reaction enables Li/garnet interface to construct a kinetically stable interfacial layer for the homogeneous ions transport in all-solid-batteries.
Abstract The Na + superionic conductor (NASICON)‐type 3 V 2 (PO 4 ) cathodes have attracted extensive interest due to their high structural stability and fast mobility. However, the substitution of vanadium with low‐cost active elements remains imperative cost vanadium, further boost its application feasibility. Herein, a novel ternary NASICON‐type VMn 0.5 Fe /C cathode is designed, which integrates advantages large reversible capacity, voltage, good stability. as‐obtained composite can...
Abstract Cobalt oxide (CoO) is a promising electrode for high‐energy‐density Li‐ion batteries (LIBs), where the charge storage believed to take place solely during electrochemical oxidation/reduction processes. However, this simple picture has been increasingly challenged by reported anomalously large capacities, indicating existence of undiscovered extra reservoirs inside system. Here, an advanced operando magnetometry technology employed monitor magnetization variation CoO LIBs in real...
"Intrinsic" strategies for manipulating the local electronic structure and coordination environment of defect-regulated materials can optimize electrochemical storage performance. Nevertheless, structure–activity relationship between defects charge is ambiguous, which may be revealed by constructing highly ordered vacancy structures. Herein, we demonstrate molybdenum carbide MXene nanosheets with customized in-plane chemical vacancies (Mo<sub>1.33</sub>CT<i><sub>x</sub></i>), utilizing...
Abstract Li‐rich layered oxides (LLOs) suffer from rapid voltage decay and capacity fading, greatly hindering their applications as high‐energy cathode materials for Li‐ion batteries (LIBs), which are closely associated with irreversible structural transformation lattice oxygen loss upon electrochemical cycling. A strategy of Al/Ti synergistic bulk doping is proposed to stabilize LLOs against degradations, yielding remarkable performance including a minor 0.34 mV cycle −1 superior retention...
Through soft X-ray absorption spectroscopy, hard Raman scattering, and theoretical simulations, we provide the most in-depth systematic study of phase transformation (de)lithiation effect on electronic structure in Li(x)FePO(4) nanoparticles single crystals. Soft reveals directly valence states Fe 3d electrons vicinity Fermi level, which is sensitive to local lattice distortion, but more importantly offers detailed information evolution at different electrochemical stages. The spectra evolve...
Soft X-ray spectroscopy (SXS) techniques such as photoelectron spectroscopy, soft absorption and emission are efficient direct tools to probe electronic structures of materials. Traditionally, these surface sensitive that detect electrons or photons require high vacuum operate. Many recent in situ instrument developments have overcome this barrier. One can now study many materials model devices under near ambient, semi-realistic, operando conditions. Further integrating the realistic sample...
Soft X‐ray absorption spectroscopy with different probe depth was employed to characterize the solid electrolyte interphases (SEIs) formed on β‐Sn single crystals two surface orientations. Based comparative studies of C‐ K , O‐ and F‐ spectra between SEIs reference samples, SEI Sn (100) mainly consists porous Li 2 CO 3 species uptake, while (001) essentially LiF organic molecules, a small amount –CO buried inside. Theoretical calculation suggests that is more reactive than (100), especially...
Abstract Lateral graphene p–n junctions are important since they constitute the core components in a variety of electronic/photonic systems. However, formation lateral with controllable doping levels is still great challenge due to monolayer feature graphene. Herein, by performing selective ion implantation and situ growth dynamic chemical vapor deposition, direct seamless spatial control tunable demonstrated. Uniform lattice substitution heteroatoms achieved both boron-doped nitrogen-doped...
All-solid-state lithium-ion battery is considered to be one of the most promising next-generation technologies. Understanding interfacial evolution a solid electrolyte and cathode electrode during mixing sintering great importance can provide guidance avoid forming unwanted compounds decrease resistance. In this work, chemical compatibilities are investigated between Ta-doped Li7La3Zr2O12 (LLZO) major commercial metal-oxide cathodes LiCoO2 (LCO) Li(NiCoMn)1/3O2 (NCM) through ball-milling...
Abstract The irreversible consumption of sodium at the anode side during first cycle prominently reduces energy density Na‐ion batteries. Different sacrificial cathode additives have been recently reported to address this problem; however, critical issues such as by‐products (e.g., CO 2 ) release cycling and incompatibility with current battery fabrication procedures potentially deteriorate full‐cell performance prevent practical application. Herein, an additive‐free self‐presodiation...
Interface engineering of zinc metal anodes is a promising remedy to relieve their inferior stability caused by dendrite growth and side reactions. Nevertheless, the low affinity additional weight protective coating remain obstacles further implementation. Here, aroused DFT simulation, self-assembled monolayers (SAMs) are selectively constructed enhance in dilute aqueous electrolytes. It found that monolayer thiol molecules relatively prefer graft onto unstable crystal facets through strong...
Abstract Garnet-type Li 6.5 La 3 Zr 1.5 Ta 0.5 O 12 (LLZO) is considered a promising solid electrolyte, but the surface degradation in air hinders its application for all-solid-state battery. Recent studies have mainly focused on final products of LLZO reactions due to lacking powerful situ characterization methods. Here, we use ambient pressure X-ray spectroscopies investigate dynamical evolution different gas environments. The newly developed mapping resonant Auger spectroscopy clearly...
Abstract Titanium niobium oxide (TiNb x O 2 + 2.5 ) is emerging as a promising electrode material for rechargeable lithium‐ion batteries (LIBs) due to its exceptional safety characteristics, high electrochemical properties (e.g., cycling stability and rate performance), eco‐friendliness. However, several intrinsic critical drawbacks, such relatively low electrical conductivity, significantly hinder practical applications. Developing reliable strategies crucial accelerating the use of TiNb...
Abstract Non-aqueous Li-air batteries have been intensively studied in the past few years for their theoretically super-high energy density. However, they cannot operate properly real air because contain highly unstable and volatile electrolytes. Here, we report fabrication of solid-state using garnet (i.e., Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 , LLZTO) ceramic disks with high density ionic conductivity as electrolytes composite cathodes consisting powder, salts (LiTFSI) active carbon. These run...
Understanding the dynamic surface self-reconstruction of transition metal oxides (TMOs) under operando condition is key for rational design oxygen evolution reaction (OER) electrocatalysts. Herein, we aimed toward spinel Li2Co2O4, as a desirable system because pure Co3+ ions in as-prepared sample, to clarify origin its enhanced activity during situ evolution. It was discovered that spontaneous extraction lithium occurs upon electrochemical generate an amorphous active layer Li2–xCo2O4−δ(OH)δ...
Polystyrene-block-poly(methyl methacrylate), (PS-b-PMMA) diblock copolymer is a promising lithography alternative for nanometer scale features. The two components segregate into nanoscale domains when the polymer solution spun on to form thin film and annealed above glass transition temperatures of both components. Preferential removal PMMA through plasma etching leave behind PS mask subsequent underlying layers focus this work. quality characterized by thickness lateral dimension structures...
Alzheimer's disease (AD) is a progressive and complex neurodegenerative in which the γ-secretase-mediated amyloid-β (Aβ) pathology plays an important role. We found that multifunctional protein, β-arrestin1, facilitated formation of NCT/APH-1 (anterior pharynx-defective phenotype 1) precomplex mature γ-secretase through its functional interaction with APH-1. Deficiency β-arrestin1 or inhibition binding APH-1 by small peptides reduced Aβ production without affecting Notch processing. Genetic...