Article
Chemistry, Multidisciplinary
Mayanak K. Gupta, Jingxuan Ding, Naresh C. Osti, Douglas L. Abernathy, William Arnold, Hui Wang, Zachary Hood, Olivier Delaire
Summary: By investigating the phonons in Na3PS4 and their coupling to fast sodium diffusion, key anharmonic phonon modes controlling the diffusion process were identified at the Brillouin zone boundary of the anharmonically stabilized cubic phase. Detailed insights into the dynamic mechanism of fast sodium diffusion were provided, offering a pathway to search for further sodium solid electrolytes.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Polymer Science
Shuqi Dai, Junxia He, Xiupeng Chen, Jinyi Cui, Hongqin Zhao, Rongchun Zhang, Huanyu Lei, Jiafu Yin, Linkun Cai, Fan Ye, Xian Kong, Rongrong Hu, Mingjun Huang
Summary: Polymer electrolytes are being studied for their potential as solid-state ionic conductors in future lithium metal batteries. Poly(ethylene oxide)-based electrolytes, in particular, are favored for their high ion conductivity and compatibility with electrode interfaces. However, the trade-off between ion conductivity and mechanical strength enhancement is a challenge due to the coupling between lithium-ion transport and polymer chain motion. Low temperature ion conductivity and low cation transference numbers also hinder practical applications of these electrolytes in batteries.
Review
Physics, Condensed Matter
Tsuyoshi Takami, Chanachai Pattanathummasid, Alex Kutana, Ryoji Asahi
Summary: Electronics, which harnesses the properties of electrons, has made remarkable progress since its inception and is a cornerstone of modern society. Ionics, which exploits the properties of ions, has also had a profound impact, as demonstrated by the award of the Nobel Prize in Chemistry in 2019 for achievements related to lithium-ion batteries (LIBs). This review focuses on fluoride-ion conductors, discussing their classification, characteristics, and future directions in terms of experimental and theoretical physics perspectives.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Chemistry, Multidisciplinary
Selim Halacoglu, Sabina Chertmanova, Yan Chen, Yang Li, Manthila Rajapakse, Gamini Sumanasekera, Badri Narayanan, Hui Wang
Summary: Chalcogenide superionic sodium conductors show potential as solid electrolytes in all-solid-state sodium batteries, with a detailed study using in-situ neutron diffraction technology revealing the influence of synthesis processes on their structures and properties. The research highlights the importance of understanding the synthesis process for obtaining solid-state conductors with desirable performance.
Article
Chemistry, Physical
Qingyong Ren, Mayanak K. Gupta, Min Jin, Jingxuan Ding, Jiangtao Wu, Zhiwei Chen, Siqi Lin, Oscar Fabelo, Jose Alberto Rodriguez-Velamazan, Maiko Kofu, Kenji Nakajima, Marcell Wolf, Fengfeng Zhu, Jianli Wang, Zhenxiang Cheng, Guohua Wang, Xin Tong, Yanzhong Pei, Olivier Delaire, Jie Ma
Summary: Superionic materials have ultralow thermal conductivity and fast ionic diffusion, making them excellent for thermoelectric converters and solid-state electrolytes. However, the correlation between these two features is unclear due to limited understanding of their atomic dynamics. In this study, we investigate ionic diffusion and lattice dynamics in Ag8SnSe6 and identify the interplay between vibrational dynamics and the host framework that enables superionicity. We also find that extreme phonon anharmonicity and weak bonding contribute to the ultralow thermal conductivity. These insights provide a fundamental understanding of atomic dynamics in superionic materials for energy conversion and storage.
Article
Chemistry, Physical
Xiaofeng Zhang, Feng Zheng, Shunqing Wu, Zizhong Zhu
Summary: Through first-principles calculations, a new trigonal phase with high conductivity has been discovered in the electrochemical reaction process of Li2MnO3.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Xiaomin Huang, Heng Cao, Yu Liu, Qiang Hu, Qiaoji Zheng, Jingxin Zhao, Dunmin Lin, Bingang Xu
Summary: Aqueous rechargeable Zn-ion batteries (ARZIBs) have gained attention for their safety, high energy density, and environmental friendliness. However, dendrite formation and corrosive reactions on the Zn anode surface have posed challenges. In this study, Ga3+-doped NaV2(PO4)(3) with Na superionic conductor (NASICON) structure was used as an artificial layer to stabilize the Zn anode. The optimal NVP-Ga(0.5) layer effectively homogenized ion flux and promoted uniform deposition of zinc, inhibiting dendrite growth and parasitic reactions. The resulting batteries showed stable operation and high discharge capacity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Atsushi Inoishi, Akinobu Nojima, Maika Tanaka, Miyuki Suyama, Shigeto Okada, Hikari Sakaebe
Summary: New superionic conductors based on polyanion-added chloride-based materials show high ionic conductivity and are suitable for use as solid electrolytes in all-solid-state sodium batteries. The materials consist mainly of an amorphous phase and Na2ZrCl6. The conductivity is likely influenced by the electronegativity of the polyanion's central atom.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Physical
Sawankumar Patel, Swastika Banerjee, Haoyu Liu, Pengbo Wang, Po-Hsiu Chien, Xuyong Feng, Jue Liu, Shyue Ping Ong, Yan-Yan Hu
Summary: This study introduces a new compositional space of argyrodite superionic conductors, Li6-xPS5-xClBrx [0 <= x <= 0.8], with high ionic conductivity and low lithium migration barrier. Bromination treatment can maintain the parent Li6PS5Cl structure within a certain range, leading to enhanced Li+ ion dynamics and a liquid-like Li sublattice. Halogen-rich compositions induce hypercoordination and coordination entropy, enhancing Li+ ion transport in the material.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Philipp Deng, Alfred Rabenbauer, Kathrin Vosseler, Janio Venturini, Tom Nilges
Summary: Pnp-switchable semiconductor materials can change their electronic properties through a temperature-dependent phase transition, enabling the construction of unconventional one-compound diodes. This study utilizes pnp-switchable AgCuS to create a functional one-compound diode, which demonstrates reversibility and flexibility for diode operation. The material's electrical, thermal, and diode properties are fully characterized, and its performance is discussed in relation to Ag18Cu3Te11Cl3, the first one-compound diode operating near room temperature.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Kavish Kaup, Abdeljalil Assoud, Jue Liu, Linda F. Nazar
Summary: Lithium thioborate halides are a new class of fast lithium-ion conducting materials with a superadamantanoid structure, exhibiting high ionic conductivities up to 1.4 mS cm(-1) that can be effectively tuned by the polarizability of the halide anion within the channels.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Yang Li, Long Kong, Haochen Yang, Shuai Li, Zhi Deng, Shuo Li, Liping Wang, Jim Yang Lee, Yusheng Zhao, Po-Yen Chen
Summary: This study developed a thermal percolation strategy to fabricate a dual-conductive framework to address the issues of uncontrollable lithium deposition and severe dendrite formation in lithium metal batteries. By melting the antiperovskite superionic conductor, it can permeate into the electronically conductive scaffold, creating percolative electron/ion pathways. The hybrid material demonstrated the ability to spatially guide lithium deposition and suppress lithium dendrite growth. Experimental results showed that the MXA-antiperovskite electrodes exhibited superior cycling stability and high energy/power densities.
Article
Chemistry, Physical
Taiki Yanagishima, John Russo, Roel P. A. Dullens, Hajime Tanaka
Summary: Research shows that the preparation protocol of glass determines the crystal growth mode. Traditional glass, prepared by fast quenching, exhibits fast growth with active interface dynamics, while uniform glass, prepared by density homogenization, grows via intermittent avalanche-like dynamics localized at the interface, combining localized mechanical defects and exceptional mechanical stability imposed by the glass phase.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Seungho Yu, Kwangnam Kim, Brandon C. C. Wood, Hun-Gi Jung, Kyung Yoon Chung
Summary: This study provides design principles for superionic sodium halide solid electrolytes (SEs) through systematic theoretical investigations. The study finds that certain structures of Na3MX6 compounds have high ionic conductivity, which can guide the development of high-voltage sodium all-solid-state batteries (ASSBs).
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Yan Hou, Qiong Liu, Lin Yang, Jing Hu, Zhenyu Wang, Xinmiao Zhang, Jialiang Pan, Zhengyu Bai, Haijiang Wang, Zhouguang Lu
Summary: In this study, SiO4 was introduced to substitute PO4 in order to modulate the local environment of Mn, activating the redox activity and stabilizing the reversibility of NMCP-Si. The introduction of SiO4 resulted in enhanced rate capability and cycling stability of the electrode material. This work addresses the challenge of stabilizing the structure of Mn-based NASICONs and provides a breakthrough in understanding how to improve Na+ conductivity by regulating local structure.
Article
Materials Science, Multidisciplinary
M. Dinachandra Singh, Anshuman Dalvi, D. M. Phase, Yogesh Kumar
JOURNAL OF MATERIALS SCIENCE
(2020)
Article
Electrochemistry
Neelakshi Sharma, Anshuman Dalvi
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2020)
Article
Chemistry, Physical
M. Dinachandra Singh, Anshuman Dalvi
Summary: X-ray photoelectron spectroscopy (XPS) is used to study the ion transport mechanism in Li+ and Na+ ion based solid polymer electrolytes. Results show that for high NASICON content, ions decouple from polymer chains and prefer NASICON surface/bulk states for electrical transport.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
Nitika, Anu Rana, Vinod Kumar, A. M. Awasthi
Summary: The study focuses on synthesizing Lanthanum-doped cobalt ferrite nanoparticles for high-frequency devices in 5G telecommunication systems. These nanoparticles exhibit enhanced magnetic and dielectric properties, making them suitable for applications in wireless communication. The inclusion of rare-earth ions and high annealing temperatures significantly affect the magnetic and dielectric properties of the ferrite nanoparticles.
CERAMICS INTERNATIONAL
(2021)
Correction
Materials Science, Multidisciplinary
Y. Govinda Reddy, A. M. Awasthi, A. Sadananda Chary, S. Narender Reddy
EMERGENT MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Gurpreet Kaur, M. Dinachandra Singh, Seshadri Chandrasekara Sivasubramanian, Anshuman Dalvi
Summary: Ionic liquid dispersed Li+-Nasicon composites with significantly improved conductivity and good stability have been prepared and characterized. These composites show promise as electrolytes in lithium-ion batteries for low power devices.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Crystallography
Priyanka Vashist, Balbir Singh Patial, Suresh Bhardwaj, A. M. Awasthi, S. K. Tripathi, Nagesh Thakur
Summary: This study reports the structural transition and thermo-physical properties of (Se80Te20)(94-x)Ge6Pbx (0 <= x <= 12) chalcogenide alloys. It is found that structural modification and formation of nano-chalcogenide alloys occur with higher doping of Pb content. Additionally, the study investigates the variation of thermo-physical properties of the alloys with the addition of Pb content.
Article
Energy & Fuels
Shrishti Sharma, M. Dinachandra Singh, Anshuman Dalvi
Summary: This study reports the fabrication and characterization of all-solid-state supercapacitors utilizing a conductive filler dispersed solid polymer electrolyte. The research demonstrates that the electrical conductivity of the CSPE membranes is closely related to the EDLC performance, with the LATP content in the membranes playing a crucial role in enhancing capacitance. Additionally, EDLC cells with LATP dispersed CSPE exhibit improved stability during thermal cycling between 40 degrees C and 80 degrees C.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Electrochemistry
Gurpreet Kaur, Seshadri Chandrasekara Sivasubramanian, Anshuman Dalvi
Summary: This research demonstrates the use of IL-ceramic composites for capacitor applications, which exhibit improved ionic conductivity when a small amount of ionic liquid (IL) is added to ceramic ionic conductors. The choice of IL and composition of fast ionic ceramic influence the performance of the device.
ELECTROCHIMICA ACTA
(2022)
Article
Materials Science, Multidisciplinary
S. Raut, S. Chakravarty, H. S. Mohanty, S. Mahapatra, S. Bhardwaj, A. M. Awasthi, B. Kar, K. Singh, M. Chandra, A. Lakhani, V. Ganesan, M. Mishra Patidar, R. K. Sharma, Velaga Srihari, H. K. Poswal, S. Mukherjee, S. Giri, S. Panigrahi
Summary: The specific-heat and exchange bias effects were investigated in polycrystalline Sm0.5Y0.5Fe0.58Mn0.42O3. The specific-heat measurements showed a linear contribution at low temperature and a diffused Schottky peak. The inhomogeneity of the molecular field in the spinglass state explained the observed distribution of Schottky levels. A finite zero field exchange bias effect was observed at low temperatures, which could be attributed to the competition of interfacial exchange bias and atomic exchange bias.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Physics, Condensed Matter
S. Raut, S. Chakravarty, H. S. Mohanty, S. Mahapatra, S. Bhardwaj, A. M. Awasthi, B. Kar, K. Singh, M. Chandra, V. Ganesan, M. Mishra Patidar, R. K. Sharma, Velaga Srihari, H. K. Poswal, S. Mukherjee, S. Giri, S. Panigrahi
Summary: The various physical properties and their intercorrelations in polycrystalline samples of Sm0.5Y0.5-Fe0.58Mn0.42O3 [SYFM (58-42)] were investigated. The weak ferromagnetic (WFM) transition at TN ~ 361 K and the incomplete spin reorientation (SR) transition at TSR1 - 348 K were observed. A first order magnetic transition (FOMT) around TSR2 - 292 K completes the spin reorientation transition into a nearly collinear antiferromagnetic (AFM) state. The material exhibits robust magnetodi-electric (MD) behavior at room temperature, true ferroelectric transition with TFE = 108 K, and magnetoelectric coupling (ME) attributed to spin phonon coupling (SPC).
PHYSICA B-CONDENSED MATTER
(2023)
Article
Chemistry, Physical
Shrishti Sharma, Anshuman Dalvi
Summary: Interesting findings have been reported on the application of NASICON-structured Li 1.3Al0.3Ti 1.7(PO4)3 (LATP) to solid-state supercapacitors. The addition of various solid polymer electrolytes to LATP results in high ionic conductivity. The supercapacitors fabricated using these electrolyte membranes show optimized voltage window and excellent performance parameters.
SOLID STATE IONICS
(2022)
Article
Electrochemistry
Shrishti Sharma, Gurpreet Kaur, Anshuman Dalvi
Summary: Solvent-free all-solid-state supercapacitors have gained attention for their high specific capacitance, but their performance is degraded by solid-solid interface issues during prolonged cycling. This study proposes a novel strategy of introducing a small amount of polymer into the activated carbon-based electrode to improve the electrode-electrolyte interface. The optimized electrode composition is 80AC:8SA:7AB:5[PEO0.95(LiClO4)0.05], with a composite membrane of PEO-LiClO4 reinforced with Li1.3Al0.3Ti1.7(PO4)3 nano crystallites as a solid electrolyte. Incorporating a small amount of salt-in-polymer (95PEO-5LiClO4) in the electrode matrix leads to a smooth interface formation, thereby improving the performance parameters of all-solid-state supercapacitors.
Article
Engineering, Electrical & Electronic
Adityanarayan H. Pandey, S. M. Gupta, P. Sahlot, A. M. Awasthi, T. V. Chandrasekhar Rao, A. K. Nigam
Summary: The compound lead magnesium niobate (PMN) is a relaxor ferroelectric material with frequency-dependent dielectric behavior below 250 K. Gd-doped PMN ceramics exhibit magneto-dielectric signatures, with deviation from linear magnetic susceptibility behavior and peak in ac susceptibility at around 125 K, indicating the presence of local magnetic-interacting areas. The low-temperature magnetization versus magnetic field (MH) curve can be described by Brillouin functions, suggesting weak magneto-electric interaction. The interaction between magnetic and polar regions in higher Gd-doped PMN samples (x > 0.05) provides strong evidence of their coexistence in this materials family, with different temperature scales.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Physics, Multidisciplinary
Deepak Sharma, A. M. Awasthi
Summary: We performed Raman spectroscopy on benchmark glassy compositions and investigated soft quasi-localized modes. The study of these quasi-localized modes in the vicinity of the boson peak is still in its early stages due to limited experimental data. We obtained the vibrational density of states using the low-frequency spectrum for three key compositions, which showed different power law dependencies (G(w) similar to w(2.22), w(3.44), and w(3.09)), while the boson peak typically exhibited a G(w) similar to w(2) behavior. Based on our analysis, we are formulating a general law, G(w) similar to (d+n), where d=2 (Debye nature) and n is an integer/fractional value that represents the deviation from Debye behavior and directly correlates with the stability of the glass. The increase in germanium concentration in the selenium matrix results in changes in the network connectivity. Acoustic vibrational modes characterization (Ge15Se85, Ge20Se80, and Ge33Se67) revealed a shift towards lower frequencies with increasing networking concentration, with resonance peak frequency (wr) values of 14.22 cm(-1), 12.69 cm(-1), and 9.7338 cm(-1), respectively. The relaxation in the decaying density of states of quasi-localized vibrations was identified as a fast beta process with purely exponential decay. The damping nature of these acoustic modes was discussed in terms of under damping, critical damping, and over damping for the corresponding samples.
INDIAN JOURNAL OF PHYSICS
(2023)
