A5042025386- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Advanced Battery Technologies Research
- Transition Metal Oxide Nanomaterials
- Semiconductor materials and devices
- Advanced battery technologies research
- MXene and MAX Phase Materials
Xi'an Jiaotong University
2022-2024
In spite of the competitive performance at room temperature, development sodium-ion batteries (SIBs) is still hindered by sluggish electrochemical reaction kinetics and unstable electrode/electrolyte interphase under subzero environments. Herein, a low-concentration electrolyte, consisting 0.5M NaPF
Sodium-ion batteries (SIBs) have captured widespread attention for grid-scale energy storage owing to the wide distribution and low cost of sodium resources. Delivery high density with stable retention remains a challenge in developing cathode candidates rechargeable SIBs. Inspired by concept "cationic potential", here, we present hierarchical crystalline domain hexagonal particles target chemical composition (Na
Searching for high energy-density electrode materials sodium ion batteries has revealed Na-deficient intercalation compounds with lattice oxygen redox as promising high-capacity cathodes. However, anionic reactions commonly encountered poor electrochemical reversibility and unfavorable structural transformations during dynamic (de)sodiation processes. To address this issue, we employed lithium orbital hybridization chemistry to create Na-O-Li configuration in a prototype P2-layered Na
Abstract Layered composite oxide materials with O3/P2 biphasic crystallographic structure typically demonstrate a combination of high capacities the O3 phase and operation voltages P2 phase. However, their practical applications are seriously obstructed by difficulties in thermodynamic regulation, complicated electrochemical transition, unsatisfactory cycling life. Herein, we propose an efficient structural evolution strategy from biphase to monophase Na 0.766+ x Li Ni 0.33− Mn 0.5 Fe 0.1 Ti...
Fierce phase transformation and limited sodium ion diffusion dynamics are critical obstacles that hinder the practical energy storage applications of P2-type layered transition metal oxides (NaxTMO2). Herein, a synergistic strategy electronic state tailoring pillar effect was carefully implemented by substituting divalent Mg2+ into Na0.67Ni0.33Mn0.67O2 material with unique oriented hollow rodlike structures. Mg2+substitution can not only facilitate anionic oxygen redox reactions conductivity...
Employing first-principles calculations, the energy storage properties and ion diffusion dynamics of Li+, Na+, K+, Mg2+, Ca2+, Zn2+, Al3+ on bare (Mo2/3Sc1/3)2C surface-functionalized (Mo2/3Sc1/3)2CT2 (T = −O, −OH, −F) i-MXenes are predicted. The investigated show weak adsorption ability to Zn2+ regardless surface terminations, excluding their use as anodes for Zn batteries. molecular simulations indicate that alkaline (earth) metal ions (Mo2/3Sc1/3)2C(OH)2 (Mo2/3Sc1/3)2CF2 causes reaction...
Through the electrochemical ion-exchange method, P2-K 0.56 Na 0.11 Li 0.12 Ni 0.22 Mn 0.66 O 2 was successfully synthesized as a high-performance cathode with single-phase reaction and K + /vacancy disordering for potassium-ion batteries.
Abstract In spite of the competitive performance at room temperature, development sodium‐ion batteries (SIBs) is still hindered by sluggish electrochemical reaction kinetics and unstable electrode/electrolyte interphase under subzero environments. Herein, a low‐concentration electrolyte, consisting 0.5M NaPF 6 dissolving in diethylene glycol dimethyl ether solvent, proposed for SIBs working low temperature. Such an electrolyte generates thin, amorphous, homogeneous cathode/electrolyte The...