Dechao Meng
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Dechao Meng has a total of 19 co-authors. Here are the top co-authors by number of shared publications:
- Chao Xu
Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, China
1 shared publication Deyang Qu
§McNair Technology Company, Ltd., Dongguan, Guangdong 523700, China
1 shared publication- Gao Liu
Lawrence Berkeley National Laboratory
1 shared publication Guo Ai
†Energy and Environmental Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
1 shared publicationHui Zhao
†Energy and Environmental Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
1 shared publicationJing Chen
Institute of Nuclear and New Energy Technology, Tsinghua University
1 shared publication
Latest Publications
- Open Access
Multi-Scale Heterogeneity of Electrode Reaction for 18650-Type Lithium-Ion Batteries during Initial Charging Process
The improvement of fast-charging capabilities for lithium-ion batteries significantly influences the widespread application of electric vehicles. Fast-charging performance depends not only on materials but also on the battery’s inherent structure and the heterogeneity of the electrode reaction. Herein, we utilized advanced imaging techniques to explore how the internal structure of cylindrical batteries impacts macroscopic electrochemical performance. Our research unveiled the natural 3D structural non-uniformity of the electrodes, causing heterogeneity of electrode reaction. This non-uniformity of reaction exhibited a macro–meso–micro-scale feature in four dimensions: the exterior versus the interior of the electrode, the middle versus the sides of the cell, the inside versus the outside of the cell, and the surface versus the body of the electrode. Furthermore, the single-coated side of the anode demonstrated notably faster reaction than the double-coated sides, leading to the deposition of island-like lithium during fast charging. These discoveries offer novel insights into multi-scale fast-charging mechanisms for commercial batteries, inspiring innovative approaches to battery design.
Open AccessMulti-Scale Heterogeneity of Electrode Reaction for 18650-Type Lithium-Ion Batteries during Initial Charging Process
The improvement of fast-charging capabilities for lithium-ion batteries significantly influences the widespread application of electric vehicles. Fast-charging performance depends not only on materials but also on the battery’s inherent structure and the heterogeneity of the electrode reaction. Herein, we utilized advanced imaging techniques to explore how the internal structure of cylindrical batteries impacts macroscopic electrochemical performance. Our research unveiled the natural 3D structural non-uniformity of the electrodes, causing heterogeneity of electrode reaction. This non-uniformity of reaction exhibited a macro–meso–micro-scale feature in four dimensions: the exterior versus the interior of the electrode, the middle versus the sides of the cell, the inside versus the outside of the cell, and the surface versus the body of the electrode. Furthermore, the single-coated side of the anode demonstrated notably faster reaction than the double-coated sides, leading to the deposition of island-like lithium during fast charging. These discoveries offer novel insights into multi-scale fast-charging mechanisms for commercial batteries, inspiring innovative approaches to battery design.
- 3 April 2018
- Published by Springer Nature in Journal of Radioanalytical and Nuclear Chemistry
- Vol. 317 (1) , 121-129
Complexation of U(VI) with diphenyldithiophosphinic acid: spectroscopy, structure and DFT calculations
- 3 April 2018
- Published by Springer Nature in Journal of Radioanalytical and Nuclear Chemistry
- Vol. 317 (1) , 121-129
Complexation of U(VI) with diphenyldithiophosphinic acid: spectroscopy, structure and DFT calculations
- 20 May 2015
- Published by American Chemical Society (ACS) in ACS Applied Materials & Interfaces
- Vol. 7 (22) , 12057-12066
Rational Design and Facial Synthesis of Li3V2(PO4)3@C Nanocomposites Using Carbon with Different Dimensions for Ultrahigh-Rate Lithium-Ion Batteries
Li3V2(PO4)3 (LVP) particles dispersed in different inorganic carbons ([email protected]) have been successfully synthesized via an in situ synthesis method. The inorganic carbon materials with different dimensions including zero-dimensional Super P (SP) nanospheres, one-dimensional carbon nanotubes (CNTs), two-dimensional graphene nanosheets, and three-dimensional graphite particles. The effects of carbon dimensions on the structure, morphology, and electrochemical performance of [email protected] composites have been systematically investigated. The carbon materials can maintain their original morphology even after oxidation (by NH4VO3) and high-temperature sintering (850 °C). [email protected] exhibits the best electrochemical performances among all of the samples. At an ultrahigh discharge rate of 100C, it presents a discharge capacity of 91.94 mAh g–1 (69.13% of its theoretical capacity) and maintains 79.82% of its original capacity even after 382 cycles. Its excellent electrochemical performance makes [email protected] a promising cathode candidate for lithium-ion batteries.
- 20 May 2015
- Published by American Chemical Society (ACS) in ACS Applied Materials & Interfaces
- Vol. 7 (22) , 12057-12066
Rational Design and Facial Synthesis of Li3V2(PO4)3@C Nanocomposites Using Carbon with Different Dimensions for Ultrahigh-Rate Lithium-Ion Batteries
Li3V2(PO4)3 (LVP) particles dispersed in different inorganic carbons ([email protected]) have been successfully synthesized via an in situ synthesis method. The inorganic carbon materials with different dimensions including zero-dimensional Super P (SP) nanospheres, one-dimensional carbon nanotubes (CNTs), two-dimensional graphene nanosheets, and three-dimensional graphite particles. The effects of carbon dimensions on the structure, morphology, and electrochemical performance of [email protected] composites have been systematically investigated. The carbon materials can maintain their original morphology even after oxidation (by NH4VO3) and high-temperature sintering (850 °C). [email protected] exhibits the best electrochemical performances among all of the samples. At an ultrahigh discharge rate of 100C, it presents a discharge capacity of 91.94 mAh g–1 (69.13% of its theoretical capacity) and maintains 79.82% of its original capacity even after 382 cycles. Its excellent electrochemical performance makes [email protected] a promising cathode candidate for lithium-ion batteries.