Ying Shirley Meng

University of California, San Diego

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Minghao Zhang

Xinxiang Medical University

Bingyu Lu

University of California, San Diego

Diyi Cheng

Lawrence Berkeley National Laboratory

Weikang Li

University of California, San Diego

Erik A. Wu

University of California, San Diego

Jean‐Marie Doux

University of California, San Diego

Gerbrand Ceder

Lawrence Berkeley National Laboratory

Darren H. S. Tan

University of California, San Diego

Minghao Zhang

University of Chicago

Xuefeng Wang

Nanjing University

Cooperative Institutions

University of California, San Diego

380

Chinese Academy of Sciences

237

Argonne National Laboratory

192

Lawrence Berkeley National Laboratory

131

University of Chinese Academy of Sciences

111

University of California System

Brookhaven National Laboratory

University of California, Berkeley

Massachusetts Institute of Technology

Zhejiang University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Lithium Diffusion in Graphitic Carbon

The Journal of Physical Chemistry Letters (2010)

Kristin A. Persson Vijay A. Sethuraman Laurence J. Hardwick Yoyo Hinuma Ying Shirley Meng

Graphitic carbon is currently considered the state-of-the-art material for the negative electrode in lithium-ion cells, mainly due to its high reversibility and low operating potential. However, carbon anodes exhibit mediocre charge/discharge rate performance, which contributes to severe transport-induced surface-structural damage upon prolonged cycling, and limits the lifetime of the cell. Lithium bulk diffusion in graphitic carbon is not yet completely understood, partly due to the complexity of measuring bulk transport properties in finite-sized, non-isotropic particles. To solve this problem for graphite, we use the Devanathan-Stachurski electrochemical methodology combined with ab-initio computations to deconvolute, and quantify the mechanism of lithium-ion diffusion in highly oriented pyrolytic graphite (HOPG). The results reveal inherent high lithium-ion diffusivity in the direction parallel to the graphene plane (ca. 10^-7 - 10^-6 cm2 s-1), as compared to sluggish lithium-ion transport along grain boundaries (ca. 10^-11 cm^2 s^-1), indicating the possibility of rational design of carbonaceous materials and composite electrodes with very high rate capability.

Carbon fibers

Pyrolytic carbon

10.1021/jz100188d

Cite

Citations (760)

Dense‐Stacking Porous Conjugated Polymer as Reactive‐Type Host for High‐Performance Lithium Sulfur Batteries

Angewandte Chemie (2021)

Xiaowei Wang Yangyuchen Yang Chen Lai Runlai Li Haomin Xu

Abstract Commercialization of the lithium‐sulfur battery is hampered by bottlenecks like low sulfur loading, high cathode porosity, uncontrollable Li 2 S x deposition and sluggish kinetics of Li 2 S activation. Herein, we developed a densely stacked redox‐active hexaazatrinaphthylene (HATN) polymer with a surface area of 302 m 2 g −1 and a very high bulk density of ca. 1.60 g cm −3 . Uniquely, HATN polymer has a similar redox potential window to S, which facilitates the binding of Li 2 S x and its transformation chemistry within the bulky polymer host, leading to fast Li 2 S/S kinetics. The compact polymer/S electrode presents a high sulfur loading of ca. 15 mg s cm −2 (200‐μm thickness) with a low cathode porosity of 41 %. It delivers a high areal capacity of ca. 14 mAh cm −2 and good cycling stability (200 cycles) at electrolyte–sulfur (E/S) ratio of 5 μL mg s −1 . The assembled pouch cell delivers a cell‐level high energy density of 303 Wh kg −1 and 392 Wh L −1 .

10.1002/ange.202016240

Cite

Citations (11)

Investigating the Energy Storage Mechanism of SnS₂-rGO Composite Anode for Advanced Na-Ion Batteries

Chemistry of Materials (2015)

Chuze Ma Jing Xu Judith Alvarado Baihua Qu James Somerville

Tin sulfide–reduced graphene oxide (SnS2-rGO) composite material is investigated as an advanced anode material for Na-ion batteries. It can deliver a reversible capacity of 630 mAh g–1 with negligible capacity loss and exhibits superb rate performance. Here, the energy storage mechanism of this SnS2-rGO anode and the critical mechanistic role of rGO will be revealed in detail. A synergistic mechanism involving conversion and alloying reactions is proposed based on our synchrotron X-ray diffraction (SXRD) and in situ X-ray absorption spectroscopy (XAS) results. Contrary to what has been proposed in the literature, we determined that Na2S2 forms instead of Na2S at the fully discharge state. The as-formed Na2S2 works as a matrix to relieve the strain from the huge volume expansion of the Na–Sn alloy reaction, shown in the high resolution transmission electron microscope (HRTEM). In addition, the Raman spectra results suggest that the rGO not only assists the material to have better electrochemical performance by preventing particle agglomeration of the active material but also coordinates with Na-ions through electrostatic interaction during the first cycle. The unique reaction mechanism in SnS2-rGO offers a well-balanced approach for sodium storage to deliver high capacity, long-cycle life, and superior rate capability.

X-ray absorption spectroscopy

10.1021/acs.chemmater.5b01984

Cite

Citations (193)

Nucleation of dislocations and their dynamics in layered oxide cathode materials during battery charging

Nature Energy (2018)

Andrej Singer Minghao Zhang Sunny Hy Devin Cela Chengcheng Fang

10.1038/s41560-018-0184-2

Cite

Citations (353)

Carbon-free high-loading silicon anodes enabled by sulfide solid electrolytes

Science (2021)

Darren H. S. Tan Yu‐Ting Chen Hedi Yang Wurigumula Bao Bhagath Sreenarayanan

Silicon anode solid-state batteries Research on solid-state batteries has focused on lithium metal anodes. Alloy-based anodes have received less attention in part due to their lower specific capacity even though they should be safer. Tan et al . developed a slurry-based approach to create films from micrometer-scale silicon particles that can be used in anodes with carbon binders. When incorporated into solid-state batteries, they showed good performance across a range of temperatures and excellent cycle life in full cells. —MSL

Carbon fibers

Fast ion conductor

10.1126/science.abg7217

Cite

Citations (596)

Could Irradiation Introduce Oxidized Oxygen Signals in Resonant Inelastic X-ray Scattering of Battery Electrodes?

The Journal of Physical Chemistry Letters (2021)

Qingtian Li Zachary W. Lebens-Higgins Yixuan Li Ying Shirley Meng Yi‐De Chuang

The characterization of oxidized oxygen states through high-efficiency mapping of resonant inelastic X-ray scattering (mRIXS) has become a crucial approach for studying the oxygen redox activities in high-energy battery cathodes. However, this approach has been recently challenged due to the concern of irradiation damage. Here we revisited a typical Li-rich electrode, Li1.144Ni0.136Mn0.544Co0.136O2, in both lithiated and delithiated states and evaluated the X-ray irradiation effect in the lengthy mRIXS experiments. Our results show that irradiation cannot introduce any oxidized oxygen feature, and the features of oxidized oxygen are weakened with a high X-ray dose. The results confirm again that mRIXS detects the intrinsic oxidized oxygen state in battery electrodes. However, the distinct irradiation effects in different systems imply that irradiation could selectively target the least stable elemental or chemical states, which should be analyzed with caution in the study of active chemical states.

10.1021/acs.jpclett.0c03639

Cite

Citations (10)

(Invited) Anode Free Solid State Battery - the Design Constraints and Opportunities

Meeting abstracts/Meeting abstracts (Electrochemical Society. CD-ROM) (2023)

Ying Shirley Meng

Anode-free strategy is gaining more interests in recent years due to its manufacturing simplicity and potential for high energy density battery without safety compromise. However, the design constraints for anode free batteries have been difficult to overcome. In this talk, I will give an update on our efforts to enable anode-free lithium metal and anode-free sodium metal batteries. We hope to discuss a few opportunities presented by such a strategy.

10.1149/ma2023-024561mtgabs

Cite

Citations (0)

Investigating Degradation Modes in Zn‐AgO Aqueous Batteries with In Situ X‐Ray Micro Computed Tomography

Advanced Energy Materials (2021)

Jonathan Scharf Lu Yin Christopher Redquest Ruixiao Liu Xueying L. Quinn

Abstract To meet growing energy demands, degradation mechanisms of energy storage devices must be better understood. As a non‐destructive tool, X‐ray Computed Tomography (CT) has been increasingly used by the battery community to perform in situ experiments that can investigate dynamic phenomena. However, few have used X‐ray CT to study representative battery systems over long cycle lifetimes (>100 cycles). Here, the in situ CT study of Zn–Ag batteries is reported and the effects of current collector parasitic gassing over long‐term storage and cycling are demonstrated. Performance representative in situ CT cells are designed that can achieve >250 cycles at a high areal capacity of 12.5 mAh cm −2 . Combined with electrochemical experiments, the effects of current collector parasitic gassing are revealed with micro‐scale CT. The volume expansion and evolution of ZnO and Zn depletion are quantified with cycling and elevated temperature testing. The experimental insights are utilized to develop larger form‐factor (4 cm 2 ) cells with electrochemically compatible current collectors. With this, over 500 cycles at a high capacity of 12.5 mAh cm −2 for a 4 cm 2 form‐factor are demonstrated. This work demonstrates that in situ X‐ray CT used in long cycle‐lifetime studies can be applied to examine a multitude of battery chemistries to improve performances.

Degradation

Current collector

Characterization

10.1002/aenm.202101327

Cite

Citations (27)

Revisiting the conversion reaction voltage and the reversibility of the CuF2 electrode in Li-ion batteries

Nano Research (2017)

Joon Kyo Seo Hyung-Man Cho Katsunori Takahara Karena W. Chapman Olaf J. Borkiewicz

Non-blocking I/O

10.1007/s12274-016-1365-6

Cite

Citations (60)

Predicting Calendar Aging in Lithium Metal Secondary Batteries: The Impacts of Solid Electrolyte Interphase Composition and Stability

Advanced Energy Materials (2018)

Sean M. Wood Chengcheng Fang Eric J. Dufek Shrikant C. Nagpure Sergiy V. Sazhin

Abstract Calendar aging of lithium metal batteries, in which cells' components degrade internally due to chemical reactions while no current is being applied, is a relatively unstudied field. In this work, a model to predict calendar aging of lithium metal cells is developed using two sets of readily obtainable data: solid electrolyte interphase (SEI) layer composition (measured via X‐ray photoelectron spectroscopy) and SEI stability (measured as a degradation rate using a simple constant current–constant voltage charging protocol). Electrolyte properties such as volume and salt concentration are varied in order to determine their effect on SEI stability and composition, with subsequent impacts to calendar aging. Lower salt concentrations produce a solvent‐based, more soluble SEI, while the highest concentration produces a salt‐based, less soluble SEI. Higher electrolyte volumes promote dissolution of the SEI and thus decrease its stability. The model predicts that lithium metal would be the limiting factor in calendar aging, depleting long before the electrolyte does. Additionally, the relative composition of the electrolyte during aging is modeled and found to eventually converge to the same value independent of initial salt concentration.

Interphase

Lithium metal

10.1002/aenm.201801427

Cite

Citations (56)