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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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Ganapathy, S. (author), Li, Z. (author), Anastasaki, Maria S. (author), Basak, S. (author), Miao, X.F. (author), Goubitz, K. (author), Zandbergen, H.W. (author), Mulder, F.M. (author), Wagemaker, M. (author)The high theoretical energy density of Li-O<sub>2</sub> batteries as required for electrification of transport has pushed Li-O<sub>2</sub> research to the forefront. The poor cyclability of this system due to incomplete Li<sub>2</sub>O<sub>2</sub> oxidation is one of the major hurdles to be crossed if it is ever to deliver a high reversible...journal article 2016
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Li, Z. (author), Ganapathy, S. (author), Xu, Y. (author), Heringa, J.R. (author), Zhu, Quanyao (author), Chen, Wen (author), Wagemaker, M. (author)The lithium air, or Li–O2, battery system is a promising electrochemical energy storage system because of its very high theoretical specific energy, as required by automotive applications. Fundamental research has resulted in much progress in mitigating detrimental (electro)chemical processes; however, the detailed structural evolution of the...journal article 2017
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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 Li<sub>4+</sub> <sub>x</sub>Ti<sub>5</sub>O<sub>12</sub> introduces a controversy as the...journal article 2017
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Yu, C. (author), Ganapathy, S. (author), van Eck, Ernst R H (author), van Eijck, L. (author), Basak, S. (author), Liu, Yanyan (author), Zhang, Long (author), Zandbergen, H.W. (author), Wagemaker, M. (author)Based on its high Li-ion conductivity, argyrodite Li6PS5Br is a promising solid electrolyte for all-solid-state batteries. However, more understanding is required on the relation between the solid electrolyte conductivity and the solid-state battery performance with the argyrodite structure, crystallinity and particle size that depend on the...journal article 2017
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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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- Li, Z. (author), Ganapathy, S. (author), Xu, Y. (author), Zhu, Quanyao (author), Chen, Wen (author), Kochetkov, Ivan (author), George, C. (author), Nazar, Linda F. (author), Wagemaker, M. (author) journal article 2018
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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 Li<sub>6</sub>PS<sub>5</sub>Cl 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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Ganapathy, C. (author), Chen, Y. (author), Voskov, D.V. (author)A compositional formulation is a reliable option for understanding the complex subsurface processes and the associated physical changes. However, this type of model has a great computational cost, since the number of equations that needs to be solved in each grid block increases proportionally with the number of components employed, thereby...conference paper 2018
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Ganapathy, Chandrashekar (author), Voskov, D.V. (author)A compositional formulation is a reliable option for understanding the complex subsurface processes and the associated physical changes. However, this type of model has a great computational cost, since the number of equations that needs to be solved in each grid block increases proportionally with the number of components employed. To...journal article 2018
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Ganapathy, S. (author), Yu, C. (author), Van Eck, Ernst R.H. (author), Wagemaker, M. (author)The development of high-performance all-solid-state batteries relies on charge transport in solid electrolytes, where transport across grain boundaries often limits their bulk conductivity. The argyrodite Li <sub>6</sub> PS <sub>5</sub> X (X = Cl, Br) solid electrolyte has a high conductivity; however, macroscopic diffusion in this material...journal article 2019
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Shan, M. (author), Liu, X. (author), Wang, X. (author), Liu, Z. (author), Iziyi, H. (author), Ganapathy, S. (author), Gascon, Jorge (author), Kapteijn, F. (author)Membranes with high selectivity and permeance are needed to reduce energy consumption in hydrogen purification and pre-combustion CO <sub>2</sub> capture. Polybenzimidazole (PBI) is one of the leading membrane materials for this separation. In this study, we present superior novel supported PBI (poly(p-phenylene benzobisimidazole), PBDI)...journal article 2019
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Yu, C. (author), Hageman, J.G. (author), Ganapathy, S. (author), van Eijck, L. (author), Zhang, Long (author), Adair, Keegan R. (author), Sun, Xueliang (author), Wagemaker, M. (author)The ultrafast ionic conductivity of Li <sub>6</sub> PS <sub>5</sub> Br, which is higher than 1 mS cm <sup>-1</sup> at room temperature, makes it an attractive candidate electrolyte for the all-solid-state Li-S battery. A simple synthesis route with an easy scale up process is critical for practical applications. In this work, the highest room...journal article 2019
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Liu, M. (author), Cheng, Z. (author), Ganapathy, S. (author), Wang, C. (author), Haverkate, Lucas A. (author), Tułodziecki, Michał (author), Unnikrishnan, Sandeep (author), Wagemaker, M. (author)In common hybrid solid electrolytes (HSEs), either the ionic conductivity of the polymer electrolyte is enhanced by the presence of a nanosized inorganic filler, which effectively decrease the glass-transition temperature, or the polymer solid electrolyte acts mostly as a flexible host for the inorganic solid electrolyte, the latter providing...journal article 2019
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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−O<sub>2</sub>) batteries is still limited by challenges in preserving the native environment of Li−O<sub>2</sub> discharge products. The extreme reactivity and moisture sensitivity of the discharge products means that they are...journal article 2020
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Zhao, Chenglong (author), Yao, Zhenpeng (author), Wang, Qidi (author), Li, Haifeng (author), Wang, Jianlin (author), Liu, M. (author), Ganapathy, S. (author), Lu, Yaxiang (author), Wagemaker, M. (author)Layered Na-based oxides with the general composition of NaxTMO2 (TM: transition metal) have attracted significant attention for their high compositional diversity that provides tunable electrochemical performance for electrodes in sodium-ion batteries. The various compositions bring forward complex structural chemistry that is decisive for...journal article 2020
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Liu, M. (author), Wang, C. (author), Cheng, Z. (author), Ganapathy, S. (author), Haverkate, Lucas A. (author), Unnikrishnan, Sandeep (author), Wagemaker, M. (author)Solid-state lithium-metal batteries are considered to be promising candidates for next-generation high-energy density storage devices to power electrical vehicles. Critical challenges for solid-state lithium-metal batteries include the large morphological changes associated with the plating and stripping of lithium metal and decomposition of...journal article 2020
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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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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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Ganapathy, S. (author), Wagemaker, M. (author)Li4Ti5O12 is a commonly used negative electrode material, but the origin of its fast rate capability has puzzled scientists for decades. Now, a facile Li-ion transport route featuring metastable intermediates is revealed to rationalize the fast-charging kinetics.journal article 2020