A5044728698- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Electrocatalysts for Energy Conversion
- Supercapacitor Materials and Fabrication
- Fuel Cells and Related Materials
- Advanced battery technologies research
- Advanced Battery Technologies Research
- Extraction and Separation Processes
- Catalytic Processes in Materials Science
- Electrochemical Analysis and Applications
- Advanced Photocatalysis Techniques
- Transition Metal Oxide Nanomaterials
- Metal-Organic Frameworks: Synthesis and Applications
- Conducting polymers and applications
- Graphene research and applications
- Nanomaterials for catalytic reactions
- High Entropy Alloys Studies
- Gas Sensing Nanomaterials and Sensors
- Electrochemical sensors and biosensors
- MXene and MAX Phase Materials
- Semiconductor materials and devices
- Catalysis and Hydrodesulfurization Studies
- Catalysis and Oxidation Reactions
- Advanced Memory and Neural Computing
- Magnetic Properties and Synthesis of Ferrites
Peking University
2016-2025
Qingdao Institute of Bioenergy and Bioprocess Technology
2019
State Council of the People's Republic of China
2018
Southwest Petroleum University
2017
Beijing University of Technology
2004-2015
King University
2014
National Synchrotron Radiation Laboratory
2009-2014
University of Science and Technology of China
2009-2014
Institute of High Energy Physics
2008-2009
Chinese Academy of Sciences
2009
MOF-derived Co@Co<sub>3</sub>O<sub>4</sub>@C core@bishell nanoparticles encapsulated into a highly ordered porous carbon matrix show very high catalytic activity and stability toward the oxygen reduction reaction.
Well-defined porous carbon polyhedrons are synthesized directly from MOF nanocrystals and show high oxygen reduction reaction (ORR) catalytic activity in acid media.
Organic phase change materials are usually insulating in nature, and they unlikely to directly trigger latent heat storage through an electrical way. Here we report a multifunctional composite which the energy can be driven by small voltages (e.g., 1.5 V) or light illumination with high electro-to-heat photo-to-thermal efficiencies (40% 60%). The is composed of paraffin wax infiltrated into porous, deformable carbon nanotube sponge; latter not only acts as flexible encapsulation scaffold for...
Metal oxides and carbon-based materials are the most promising electrode for a wide range of low-cost highly efficient energy storage conversion devices. Creating unique nanostructures metal carbon is imperative to development new generation electrodes with high power density. Here we report our findings in novel graphene aerogel assisted method preparation oxide nanoparticles (NPs) derived from bulk MOFs (Co-based MOF, Co(mIM)2 (mIM = 2-methylimidazole). The presence cobalt (CoOx) hollow...
The development of sufficiently effective catalysts with extremely superior performance for electrocatalytic hydrogen production still remains a formidable challenge, especially in acidic media. Here, we report ultrasmall high-entropy alloy (us-HEA) nanoparticles (NPs) the best-level evolution reaction (HER). us-HEA (NiCoFePtRh) NPs show an average diameter 1.68 nm, which is smallest size reported HEAs. atomic structure, coordinational and electronic structure us-HEAs were comprehensively...
Cobalt sulfide (CoS2) is considered one of the most promising alternative anode materials for high-performance lithium-ion batteries (LIBs) by virtue its remarkable electrical conductivity, high theoretical capacity, and low cost. However, it suffers from a poor cycling stability rate capability because volume expansion dissolution polysulfide intermediates in organic electrolytes during battery charge/discharge process. In this study, novel porous carbon/CoS2 composite prepared using nano...
Lithium‐rich manganese‐based layered oxides show great potential as high‐capacity cathode materials for lithium ion batteries, but usually exhibit a poor cycle life, gradual voltage drop during cycling, and low thermal stability in the highly delithiated state. Herein, strategy to promote electrochemical performance of this material by manipulating electronic structure through incorporation boracic polyanions is developed. As‐prepared Li[Li 0.2 Ni 0.13 Co Mn 0.54 ](BO 4 ) 0.015 (BO 3 0.005 O...
The recent progress in the synthesis and energy applications of covalent organic frameworks has been elaborated this review article.
Pt‐based electrocatalysts for the oxygen reduction reaction (ORR) are topic of extensive and intensive research since a few decades. Nevertheless, scarcity these electrocatalysts, their high cost unsatisfactory durability primary hindrances to further commercialization. In recent years, non‐Pt have garnered considerable interest as alternatives catalysts ORR. This review highlights synthesis, catalytic activity key factors, namely also active sites, various nanostructured that can be grouped...
Abstract Li‐rich manganese based oxides (LRMOs) are considered an attractive high‐capacity cathode for advanced Li‐ion batteries; however, their poor cyclability and gradual voltage fading have hindered practical applications. Herein, efficient facile strategy is proposed to stabilize the lattice structure of LRMOs by surface modification polyacrylic acid (PAA). The PAA‐coated LRMO electrode exhibits only 104 mV after 100 cycles 88% capacity retention over 500 cycles. structural stability...
The anionic redox reaction (ARR) has attracted extensive attention due to its potential enhance the reversible capacity of cathode materials in Li/Na-ion batteries (LIBs/SIBs). However, understanding activation mechanism is still limited by insufficient mastering underlying thermodynamics and kinetics. Herein, a series Mg/Li/Zn-substituted Nax MnO2 Lix are designed investigate their ARR behaviors. It found that can be activated only Li-substituted not for Mg- Zn-substituted ones, while all...
Bi-functional N -methylurea molecules participate in co-solvating the Li + ions enhancing ionic conductivity, and deactivate non-solvating polymer ethereal groups through amide acceptor, providing a wide electrochemical window.
Layered Li-rich cathode materials with high reversible energy densities are becoming prevalent. However, owing to the activation of low-potential redox couples and progressively irreversible structural transformation caused by local adjustment transition-metal ions in intra/interlayer driven anionic redox, continuous capacity degradation, voltage decay emerge, thus greatly reducing density increasing difficulty battery system management. Herein, layered higher intralayer configuration...
Lithium-rich transition metal oxides (LLOs) can deliver high specific capacity over 250 mAh g-1 , stemming from additional contribution of oxygen redox. However, the formation O(2-n)- (0 < n 2) species and even gas during deep oxidation stage leads to progressive structural transformation that cause voltage decay/hysteresis, sluggish kinetics, poor thermostability, preventing real-world application LLOs. Therefore, substantive key relies on enhancing anionic redox stability in Here, a...
Abstract Lithium-manganese-oxides have been exploited as promising cathode materials for many years due to their environmental friendliness, resource abundance and low biotoxicity. Nevertheless, inevitable problems, such Jahn-Teller distortion, manganese dissolution phase transition, still frustrate researchers; thus, progress in full manganese-based (FMCMs) has relatively slow limited recent decades. Recently, with the fast growth of vehicle electrification large-scale energy-storage grids,...
High-entropy solid-solution alloys have generated significant interest in energy conversion technologies. However, structurally ordered high-entropy intermetallic (HEI) nanoparticles (NPs) been rarely reported electrocatalysis applications. Here, we demonstrate PtIrFeCoCu HEI (PIFCC-HEI) NPs with extremely superior performance for both oxygen reduction reaction (ORR) and H2/O2 fuel cells. The PIFCC-HEI show an average diameter of 6 nm. Atomic structural characterizations including...
Lithium-rich Mn-based oxides have gained significant attention worldwide as potential cathode materials for the next generation of high-energy density lithium-ion batteries. Nonetheless, inferior rate capability and voltage decay issues present formidable challenges. Here, a Li-rich material equipped with quasi-three-dimensional (quasi-3D) Li-ion diffusion channels is initially synthesized by introducing twin structures high coefficients into crystal constructing "bridge" between different...
Controlling multimetallic ensembles at the atomic level is significantly challenging, particularly for high-entropy alloys with more than five elements. Herein, we report an innovative ultrasmall (∼2 nm) PtFeCoNiCuZn intermetallic (PFCNCZ-HEI) a well-ordered structure synthesized by using space-confined strategy. By exploiting these combined metals, PFCNCZ-HEI nanoparticles achieve ultrahigh mass activity of 2.403 A mgPt–1 0.90 V vs reversible hydrogen electrode oxygen reduction reaction,...
Layered Li-rich oxides (LROs) that exhibit anionic and cationic redox are extensively studied due to their high energy storage capacities. However, voltage hysteresis, which reduces the conversion efficiency of battery, is a critical limitation in commercial application LROs. Herein, using two Li2RuO3 (LRO) model materials with C2/c P21/m symmetries, we explored relationship between hysteresis electronic structure by neutron diffraction, situ X-ray powder absorption spectroscopy, macro...
Abstract Nickel-rich layered transition metal oxides are leading cathode candidates for lithium-ion batteries due to their increased capacity, low cost and enhanced environmental sustainability compared cobalt formulations. However, the nickel enrichment comes with larger volume change during cycling as well reduced oxygen stability, which can both incur performance degradation. Here we show an ultrahigh-nickel cathode, LiNi 0.94 Co 0.05 Te 0.01 O 2 , that addresses all of these critical...
Abstract To improve the interface stability between Li-rich Mn-based oxide cathodes and electrolytes, it is necessary to develop new polymer electrolytes. Here, we report an entanglement association electrolyte (PVFH-PVCA) based on a poly (vinylidene fluoride-co-hexafluoropropylene) (PVFH) matrix copolymer stabilizer (PVCA) prepared from acrylonitrile, maleic anhydride, vinylene carbonate. The entangled structure of PVFH-PVCA imparts excellent mechanical properties eliminates stress arising...