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Structure and Dynamics of Lithium in Anastase TiO2

Wagemaker, M. (author)

doctoral thesis 2003

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Size Effects in Li4+xTi5O12 Spinel

Borghols, W.J.H. (author), Wagemaker, M. (author), Lafont, U. (author), Kelder, E.M. (author), Mulder, F.M. (author)

journal article 2009

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Improving reversible capacities of high-surface lithium insertion materials – the case of amorphous TiO2

Ganapathy, S. (author), Basak, S. (author), Lefering, A. (author), Rogers, E. (author), Zandbergen, H.W. (author), Wagemaker, M. (author)

Chemisorbed water and solvent molecules and their reactivity with components from the electrolyte in high-surface nano-structured electrodes remains a contributing factor toward capacity diminishment on cycling in lithium ion batteries due to the limit in maximum annealing temperature. Here, we report a marked improvement in the capacity...

journal article 2014

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Relating the 3D electrode morphology to Li-ion battery performance; a case for LiFePO₄

Liu, Zhao (author), Verhallen, T.W. (author), Singh, D.P. (author), Wang, Hongqian (author), Wagemaker, M. (author), Barnett, Scott (author)

One of the main goals in lithium ion battery electrode design is to increase the power density. This requires insight in the relation between the complex heterogeneous microstructure existing of active material, conductive additive and electrolyte providing the required electronic and Li-ion transport. FIB-SEM is used to determine the three...

journal article 2016

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The Fine Line between a Two-Phase and Solid-Solution Phase Transformation and Highly Mobile Phase Interfaces in Spinel Li_{4+ x}Ti₅O₁₂

Ganapathy, S. (author), Vasileiadis, A. (author), Heringa, J.R. (author), Wagemaker, M. (author)

Phase transitions play a crucial role in Li-ion battery electrodes being decisive for both the power density and cycle life. The kinetic properties of phase transitions are relatively unexplored and the nature of the phase transition in defective spinel Li₄₊ _xTi₅O₁₂ introduces a controversy as the...

journal article 2017

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A Facile Surface Reconstruction Mechanism toward Better Electrochemical Performance of Li₄Ti₅O₁₂ in Lithium-Ion Battery

Qian, Kun (author), Tang, Linkai (author), Wagemaker, M. (author), He, Yan Bing (author), Liu, Dongqing (author), Li, Hai (author), Shi, Ruiying (author), Li, Baohua (author), Kang, Feiyu (author)

Through a facile sodium sulfide (Na₂S)-assisted hydrothermal treatment, clean and nondefective surfaces are constructed on micrometer-sized Li₄Ti₅O₁₂ particles. The remarkable improvement of surface quality shows a higher first cycle Coulombic efficiency (≈95%), a significantly enhanced cycling...

journal article 2017

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High-Density Microporous Li₄Ti₅O₁₂ Microbars with Superior Rate Performance for Lithium-Ion Batteries

Tang, Linkai (author), He, Yan Bing (author), Wang, Chao (author), Wang, Shuan (author), Wagemaker, M. (author), Li, Baohua (author), Yang, Quan Hong (author), Kang, Feiyu (author)

Nanosized Li₄Ti₅O₁₂ (LTO) materials enabling high rate performance suffer from a large specific surface area and low tap density lowering the cycle life and practical energy density. Microsized LTO materials have high density which generally compromises their rate capability. Aiming at combining the favorable...

journal article 2017

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Accessing the bottleneck in all-solid state batteries, lithium-ion transport over the solid-electrolyte-electrode interface

Yu, C. (author), Ganapathy, S. (author), van Eck, Ernst R H (author), Wang, H.. (author), Basak, S. (author), Li, Z. (author), Wagemaker, M. (author)

Solid-state batteries potentially offer increased lithium-ion battery energy density and safety as required for large-scale production of electrical vehicles. One of the key challenges toward high-performance solid-state batteries is the large impedance posed by the electrode-electrolyte interface. However, direct assessment of the lithium...

journal article 2017

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Facile Synthesis toward the Optimal Structure-Conductivity Characteristics of the Argyrodite Li₆PS₅Cl Solid-State Electrolyte

Yu, C. (author), Ganapathy, S. (author), Hageman, J.G. (author), van Eijck, L. (author), Van Eck, Ernst R.H. (author), Zhang, Long (author), Schwietert, T.K. (author), Basak, S. (author), Kelder, E.M. (author), Wagemaker, M. (author)

The high Li-ion conductivity of the argyrodite Li₆PS₅Cl makes it a promising solid electrolyte candidate for all-solid-state Li-ion batteries. For future application, it is essential to identify facile synthesis procedures and to relate the synthesis conditions to the solid electrolyte material performance. Here, a...

journal article 2018

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Constructing accurate equivalent electrical circuit models of lithium iron phosphate and lead-acid battery cells for solar home system applications

Yu, Y. (author), Narayan, N.S. (author), Vega Garita, V.E. (author), Popovic, J. (author), Qin, Z. (author), Wagemaker, M. (author), Bauer, P. (author), Zeman, M. (author)

The past few years have seen strong growth of solar-based off-grid energy solutions such as Solar Home Systems (SHS) as a means to ameliorate the grave problem of energy poverty. Battery storage is an essential component of SHS. An accurate battery model can play a vital role in SHS design. Knowing the dynamic behaviour of the battery is...

journal article 2018

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Operando Neutron Depth Profiling to Determine the Spatial Distribution of Li in Li-ion Batteries

Verhallen, T.W. (author), Lv, Shasha (author), Wagemaker, M. (author)

Neutron Depth Profiling (NDP) allows determination of the spatial distribution of specific isotopes, via neutron capture reactions. In a capture reaction charged particles with fixed kinetic energy are formed, where their energy loss through the material of interest can be used to provide the depth of the original isotope. As lithium-6 has a...

journal article 2018

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Doubling Reversible Capacities in Epitaxial Li ₄ Ti ₅ O ₁₂ Thin Film Anodes for Microbatteries

Cunha, Daniel M. (author), Hendriks, Theodoor A. (author), Vasileiadis, A. (author), Vos, Chris M. (author), Verhallen, T.W. (author), Singh, Deepak P. (author), Wagemaker, M. (author), Huijben, Mark (author)

Despite the lower gravimetric capacity, Li ₄ Ti ₅ O ₁₂ is an important alternative to graphite anodes, owing to its excellent high temperature stability, high rate capability, and negligible volume change. Although surfaces with lithium compositions exceeding Li ₇ Ti ₅ O ₁₂...

journal article 2019

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Revealing an Interconnected Interfacial Layer in Solid-State Polymer Sodium Batteries

Zhao, Chenglong (author), Liu, Lilu (author), Lu, Yaxiang (author), Wagemaker, M. (author), Chen, Liquan (author), Hu, Yong Sheng (author)

Replacing the commonly used nonaqueous liquid electrolytes in rechargeable sodium batteries with polymer solid electrolytes is expected to provide new opportunities to develop safer batteries with higher energy densities. However, this poses challenges related to the interface between the Na-metal anode and polymer electrolytes. Driven by...

journal article 2019

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Accessing lithium−oxygen battery discharge products in their native environments via transmission electron microscopy grid electrode

Basak, Shibabrata (author), Baaij, Siemen (author), Ganapathy, S. (author), George, Chandramohan (author), Tempel, Hermann (author), Kungl, Hans (author), Kelder, E.M. (author), Zandbergen, H.W. (author), Wagemaker, M. (author), Eichel, Rüdiger A. (author)

High-fidelity and facile ex situ transmission electron microscopy (TEM) characterization of lithium−oxygen (Li−O₂) batteries is still limited by challenges in preserving the native environment of Li−O₂ discharge products. The extreme reactivity and moisture sensitivity of the discharge products means that they are...

journal article 2020

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Operando Transmission Electron Microscopy Study of All-Solid-State Battery Interface: Redistribution of Lithium among Interconnected Particles

Basak, S. (author), Migunov, Vadim (author), Lee, Q. (author), Ganapathy, S. (author), Vijay, Ashwin (author), Ooms, F.G.B. (author), Wagemaker, M. (author), Kelder, E.M. (author), Arszelewska, Violetta (author)

With operando transmission electron microscopy visualizing the solid-solid electrode-electrolyte interface of silicon active particles and lithium oxide solid electrolyte as a model system, we show that (de)lithiation (battery cycling) does not require all particles to be in direct contact with electrolytes across length scales of a few...

journal article 2020

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Revealing the Impact of Space-Charge Layers on the Li-Ion Transport in All-Solid-State Batteries

Cheng, Zhu (author), Liu, M. (author), Ganapathy, S. (author), Li, Z. (author), Zhang, Xiaoyu (author), He, Ping (author), Zhou, Haoshen (author), Wagemaker, M. (author), Li, Chau (author)

The influence of space-charge layers on the ionic charge transport over cathode-solid electrolyte interfaces in all-solid-state batteries remains unclear because of the difficulty to unravel it from other contributions to the ion transport over the interfaces. Here, we reveal the effect of the space-charge layers by systematically tuning the...

journal article 2020

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Hollow MoS₃ Nanospheres as Electrode Material for “Water-in-Salt” Li–Ion Batteries

Quan, Ting (author), Xu, Yaolin (author), Tovar, Michael (author), Goubard-Bretesché, Nicolas (author), Li, Z. (author), Kochovski, Zdravko (author), Kirmse, Holm (author), Skrodczky, Kai (author), Wagemaker, M. (author)

The use of “water-in-salt” electrolyte (WISE) (i. e., a highly concentrated aqueous solution) in rechargeable batteries has received increasing attention due to the significantly expanded electrochemical window compared to the limited voltage of conventional aqueous electrolytes. It enables the use of more positive/negative electrode material...

journal article 2020

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Accelerating Battery Characterization Using Neutron and Synchrotron Techniques: Toward a Multi-Modal and Multi-Scale Standardized Experimental Workflow

Atkins, Duncan (author), Capria, Ennio (author), Edström, Kristina (author), Famprikis, T. (author), Grimaud, Alexis (author), Jacquet, Quentin (author), Johnson, S.M. (author), Matic, Aleksandar (author), Wagemaker, M. (author)

Li-ion batteries are the essential energy-storage building blocks of modern society. However, producing ultra-high electrochemical performance in safe and sustainable batteries for example, e-mobility, and portable and stationary applications, demands overcoming major technological challenges. Materials engineering and new chemistries are key...

journal article 2021

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Strategies for synthesis of Prussian blue analogues

Kjeldgaard, S. (author), Dugulan, A.I. (author), Mamakhel, Aref (author), Wagemaker, M. (author), Iversen, Bo Brummerstedt (author), Bentien, Anders (author)

We report a comparison of different common synthetic strategies for preparation of Prussian blue analogues (PBA). PBA are promising as cathode material for a number of different battery types, including K-ion and Na-ion batteries with both aqueous and non-aqueous electrolytes. PBA exhibit a significant degree of structural variation. The...

journal article 2021

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A Series of Ternary Metal Chloride Superionic Conductors for High-Performance All-Solid-State Lithium Batteries

Liang, Jianwen (author), van der Maas, E.L. (author), Luo, Jing (author), Li, Xiaona (author), Chen, Ning (author), Adair, Keegan R. (author), Li, Weihan (author), Li, Junjie (author), Hu, Yongfeng (author), Liu, Jue (author), Zhang, Li (author), Zhao, W. (author), Parnell, S.R. (author), Ganapathy, S. (author), Wagemaker, M. (author)

Understanding the relationship between structure, ionic conductivity, and synthesis is the key to the development of superionic conductors. Here, a series of Li_3-3_xM₁₊_xCl₆ (−0.14 < x ≤ 0.5, M = Tb, Dy, Ho, Y, Er, Tm) solid electrolytes with orthorhombic and trigonal structures are...

journal article 2022