Unknown

Dataset Information

0

Balancing the Ion/Electron Transport of Graphite Anodes by a La-Doped TiNb2O7 Functional Coating for Fast-Charging Li-Ion Batteries.

ABSTRACT: A functional coating layer (FCL) is widely applied in fast-charging lithium-ion batteries to improve the sluggish Li+ transport kinetics of traditional graphite anodes. However, blindly increasing the Li+ conductivity for FCL reduces the overall electron conductivity of the anodes. Herein, we decoupled the effect of La-doping on TiNb2O7 (TNO) in terms of the phase evolution, Li+/electron transport, and lithiation behavior, and then proposed a promising La0.1TNO FCL with balanced Li+/electron transport for a fast-charging graphite anode. By optimizing the doping concentration of La, more holes are introduced into the TNO as electron carriers without causing lattice distortion, thus maintaining the fast Li+ diffusion channel in TNO. As a result, the graphite with La0.1TNO FCL delivers an excellent capacity of 220.2 mAh g-1 (96.3% retention) after 450 cycles at 3 C, nearly twice that of the unmodified one.

SUBMITTER: Sheng Y 

PROVIDER: S-EPMC10979427 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature

Json Xml
altmetric image

Publications

Balancing the Ion/Electron Transport of Graphite Anodes by a La-Doped TiNb<sub>2</sub>O<sub>7</sub> Functional Coating for Fast-Charging Li-Ion Batteries.

Sheng Yeliang Y   Yue Xinyang X   Hao Wei W   Dong Yongteng Y   Liu Yakun Y   Liang Zheng Z  

Nano letters 20240227 12

A functional coating layer (FCL) is widely applied in fast-charging lithium-ion batteries to improve the sluggish Li<sup>+</sup> transport kinetics of traditional graphite anodes. However, blindly increasing the Li<sup>+</sup> conductivity for FCL reduces the overall electron conductivity of the anodes. Herein, we decoupled the effect of La-doping on TiNb<sub>2</sub>O<sub>7</sub> (TNO) in terms of the phase evolution, Li<sup>+</sup>/electron transport, and lithiation behavior, and then proposed  ...[more]

Similar Datasets

Unknown Sequential Effect of Dual-Layered Hybrid Graphite Anodes on Electrode Utilization During Fast-Charging Li-Ion Batteries.
| S-EPMC11336972 | biostudies-literature
Unknown Triple Conductive Wiring by Electron Doping, Chelation Coating and Electrochemical Conversion in Fluffy Nb<sub>2</sub> O<sub>5</sub> Anodes for Fast-Charging Li-Ion Batteries.
| S-EPMC9443447 | biostudies-literature
Unknown Preparation and Characterization of Li-Ion Graphite Anodes Using Synchrotron Tomography.
| S-EPMC5455902 | biostudies-other
Unknown Controlling Li Dendritic Growth in Graphite Anodes by Potassium Electrolyte Additives for Li-Ion Batteries.
| S-EPMC9501903 | biostudies-literature
Unknown Pseudohexagonal Nb<sub>2</sub>O<sub>5</sub> Anodes for Fast-Charging Potassium-Ion Batteries.
| S-EPMC10080539 | biostudies-literature
Unknown Fast-charging high-energy lithium-ion batteries via implantation of amorphous silicon nanolayer in edge-plane activated graphite anodes.
| S-EPMC5634447 | biostudies-literature
Unknown Practical Approach to Enhance Compatibility in Silicon/Graphite Composites to Enable High-Capacity Li-Ion Battery Anodes.
| S-EPMC7860062 | biostudies-literature
Unknown Effective Measures of Thickness Evolution of the Solid Electrolyte Interphase of Graphite Anodes for Li-Ion Batteries.
| S-EPMC11008243 | biostudies-literature
Unknown Low-Temperature Charging and Aging Mechanisms of Si/C Composite Anodes in Li-Ion Batteries: An Operando Neutron Scattering Study.
| S-EPMC7028078 | biostudies-literature
Unknown Electrochemical oscillation during galvanostatic charging and discharging of Zr-modified Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub> in Li-ion batteries.
| S-EPMC11232412 | biostudies-literature