Article
Materials Science, Multidisciplinary
Recep Bakar, Saeid Darvishi, Tianyu Li, Mertcan Han, Umut Aydemir, Sedat Nizamoglu, Kunlun Hong, Erkan Senses
Summary: The use of nonlinear PEO in PEO/PMMA blends leads to a significant increase in their ionic conductivity by enhancing the decoupling of PMMA and PEO segmental dynamics, ultimately improving the performance of the electrolytes. Macromolecular architecture can serve as a tool to decouple segmental dynamics and ion mobility, allowing for the rational design of SPEs with improved performance.
ACS APPLIED POLYMER MATERIALS
(2022)
Review
Nanoscience & Nanotechnology
Xueying Yang, Jiaxiang Liu, Nanbiao Pei, Zhiqiang Chen, Ruiyang Li, Lijun Fu, Peng Zhang, Jinbao Zhao
Summary: With excellent energy densities and highly safe performance, solid-state lithium batteries (SSLBs) are regarded as promising energy storage devices. This review focuses on composite polymer electrolytes (CPEs), which are considered as one of the most promising candidates among all solid-state electrolytes. It discusses the two major obstacles affecting the development of CPEs, such as low ionic conductivity and high interfacial impedance, and provides feasible solutions for modifying CPEs through improving ion conduction mechanisms and electrode-electrolyte interface compatibility.
NANO-MICRO LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Laiqiang Xu, Jiayang Li, Wentao Deng, Lin Li, Guoqiang Zou, Hongshuai Hou, Lanping Huang, Xiaobo Ji
Summary: Researchers have found that adding fillers can enhance the ionic conductivity of PEO electrolytes, with the use of waste eggshell-derived CaO filler successfully reducing the crystallinity of PEO and improving the ionic conductivity of the composite polymer electrolyte. This innovation leads to enhanced performance in all-solid-state batteries, with increased cycling life and stable electrochemical characteristics demonstrated in Li/Na batteries using the composite electrolyte.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Physical
Ying Ji, Yu -Hang Zhang, Fa-Nian Shi, Lin -Nan Zhang
Summary: The low ionic conductivity and poor dimensional stability of PEO-based solid electrolytes have limited their development. A cross-linking structure with active soft chains doped with rigid segments was designed and prepared to reconcile the contradiction between electrochemical performance and mechanical strength. The obtained solid film showed high ionic conductivity and a favorable migration mechanism. The molecular structure design achieved a combination of flexibility and strength, and the compact PTP-SPE inhibited the formation of lithium dendrites.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Shuo Liu, Zhuoran Ao, Youlan Zou, Huiyao Li, Nantao Chen, Yu Wan, Yinan Lao
Summary: A Co-based metal-organic framework (Co-MOF) is synthesized as a filler to inhibit PEO crystallization and enhance the dissociation effect between LiTFSI and PEO, leading to improved ionic conductivity.
Article
Electrochemistry
Gayathri Peta, Hadas Alon-Yehezkel, Nagaprasad Reddy Samala, Shaul Bublil, Yuval Elias, Ilya Grinberg, Miryam Fayena-Greenstein, Doron Aurbach
Summary: This study compared the effects of nanowires and nanotubes of TiO2 as additives to poly(ethylene oxide) based electrolytes for solid state sodium batteries. Electrochemical studies showed that nanotubes significantly improved the behavior of the solid electrolyte, particularly at high current densities, mainly due to the interface of the polymeric matrix with the electrodes.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Engineering, Electrical & Electronic
Mitesh H. Patel, Tapas K. Chaudhuri, Vaibhav K. Patel
Summary: A solid state in situ thermolysis technique was used to produce PbS/polyethylene oxide (PEO)/polyvinyl pyrrolidone (PVP) nanocomposite films with varying concentrations of Pb2+-Tu complex. X-ray diffractogram investigation confirmed the presence of PbS in the PEO/PVP blend network. Transmission electron microscopy analysis revealed the size and shape of the PbS nanoparticles in the PEO/PVP matrix. UV-Vis-NIR spectroscopy showed that the bandgap energies of the PbS/PVP/PEO nanocomposite films decreased with increasing stoichiometric concentration of Pb2+-TU complex. FTIR spectroscopy was used to study the hydrogen bonding between PEO and PVP and the interaction of PbS with PEO/PVP. Electrochemical impedance spectroscopy was utilized to investigate the effect of Pb2+-TU complex concentration on the electrical characteristics of PEO/PVP.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Erqing Zhao, Yudi Guo, Awei Zhang, Hongliang Wang, Guangri Xu
Summary: The novel TiO2@PDA fillers have been successfully synthesized to enhance the ionic conductivity and electrochemical window of PEO solid electrolyte, as well as improve the interfacial compatibility with lithium. The composite electrolyte shows excellent performance in all solid state lithium-ion batteries, delivering superior rate capability and cycling stability with high discharge specific capacities.
Article
Chemistry, Multidisciplinary
Weichao Zhang, Jun Zhang, Xiaochen Liu, Huan Li, Yong Guo, Chuannan Geng, Ying Tao, Quan-Hong Yang
Summary: Polymer-based gel electrolytes with high room-temperature ionic conductivity were developed for sodium metal batteries, showing improved stability, safety, and rate capability compared to liquid electrolytes. The role of polymer frameworks in the rate performance of sodium metal batteries was also investigated.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Chenghan Li, Shi Zhou, Lijie Dai, Xuanyi Zhou, Biao Zhang, Liwen Chen, Tao Zeng, Yating Liu, Yongfu Tang, Jie Jiang, Jianyu Huang
Summary: A new solid polymer electrolyte containing PAN-FMP filler with high ionic conductivity and a wide electrochemical window is developed. This electrolyte shows promising electrochemical stability in high voltage batteries and could be used in high voltage and high energy density solid-state batteries.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Vincent St-Onge, Sylviane Rochon, Jean-Christophe Daigle, Armand Soldera, Jerome P. Claverie
Summary: By dissolving NaClO4 in statistical copolymers, the ionic conductivity of solid polymer electrolytes has been significantly enhanced. The presence of physical cross-links generated by Na+ contributes to this increase in conductivity, paving the way for the design of all-solid-state PEO-based sodium batteries operational at room temperature.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Multidisciplinary Sciences
Todor E. Vlakhov, Georgi B. Hadjichristov, Yordan G. Marinov, Nicola Scaramuzza
Summary: This study investigated the effect of titanium dioxide nanoparticles on ion conductivity in polymer electrolytes. The results showed that the addition of titanium dioxide nanoparticles can modify the ion-conducting properties.
COMPTES RENDUS DE L ACADEMIE BULGARE DES SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Kashif Khan, Muhammad Bilal Hanif, Hu Xin, Arshad Hussain, Hina Ghulam Ali, Bowen Fu, Zixuan Fang, Martin Motola, Ziqiang Xu, Mengqiang Wu
Summary: In this study, a novel hybrid filler-designed solid polymer electrolyte (SPE) was used to achieve excellent electrochemical performance in lithium metal anode and LiFePO4 cathode. The composite membrane containing hybrid fillers exhibited high ionic conductivity and stable cycling performance.
Article
Chemistry, Multidisciplinary
Young-Woong Song, Kookjin Heo, Jongkwan Lee, Dahee Hwang, Min-Young Kim, Su-Jin Kim, Jaekook Kim, Jinsub Lim
Summary: This study evaluated the properties of a composite solid electrolyte (CSE) prepared by adjusting the particle size of an active filler, Li6.4La3Zr1.4Ta0.6O12 (LLZTO), which resulted in higher lithium ionic conductivity when compared to the original LLZTO CSE. The use of small particle size in the BM-LLZTO CSE allowed for fast lithium-ion transport pathways, as confirmed by NMR analysis. The BM-LLZTO CSE showed lower overvoltage and better performance in Li-ion cells compared to the LLZTO CSE.
Review
Chemistry, Physical
Shuai Tang, Wei Guo, Yongzhu Fu
Summary: Composite polymer electrolytes (CPEs) show promising applications in batteries with unique advantages like low interfacial resistance, high ionic conductivity, and flexible characteristics.
ADVANCED ENERGY MATERIALS
(2021)
Article
Physics, Condensed Matter
Surendra Kumar, Indrani Coondoo, M. Vasundhara, Sandeep Kumar, A. L. Kholkin, Neeraj Panwar
JOURNAL OF PHYSICS-CONDENSED MATTER
(2017)
Article
Nanoscience & Nanotechnology
Nanda Shakti, Chandni Devi, A. K. Patra, P. S. Gupta, Sandeep Kumar
Article
Instruments & Instrumentation
Hemant K. Chourasiya, P. K. Kulriya, Neeraj Panwar, Sandeep Kumar
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2019)
Article
Nanoscience & Nanotechnology
Gregorio B. Correa Jr, Sandeep Kumar, Waldomiro Paschoal Jr, Chandni Devi, Daniel Jacobsson, Andreas Johannes, Carsten Ronning, Hakan Pettersson, Waldeci Paraguassu
Article
Chemistry, Physical
Neeraj Panwar, Indrani Coondoo, Surendra Kumar, Sandeep Kumar, M. Vasundhara, Ashok Rao
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Chemistry, Physical
Neetika, Sandeep Kumar, Amit Sanger, Hemant K. Chourasiya, Ashish Kumar, K. Asokan, Ramesh Chandra, V. K. Malik
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Nanoscience & Nanotechnology
Chandni Devi, Rahul Singhal, Kleber da Silva, Waldomiro Paschoal Jr, Hakan Pettersson, Sandeep Kumar
Article
Nanoscience & Nanotechnology
Sandeep Kumar, Gregorio B. Correa, Chandni Devi, Daniel Jacobsson, Andreas Johannes, Carsten Ronning, Waldeci Paraguassu, Waldomiro Paschoal, Hakan Pettersson
Article
Engineering, Electrical & Electronic
Hemant K. Chourasiya, Pawan Kumar Kulriya, Neeraj Panwar, Sandeep Kumar
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
(2020)
Article
Materials Science, Ceramics
Komal Kanwar, Indrani Coondoo, M. Anas, Vivek K. Malik, Pradip Kumar, Sandeep Kumar, Pawan K. Kulriya, S. D. Kaushik, Neeraj Panwar
Summary: The present study investigated and compared physical properties of HoCr1-xMnxO3 (x = 0, 0.15), revealing the influence of structural distortion caused by Mn substitution on optical and magnetic properties of the compound. The optical band gap decreased and other optical parameters varied noticeably after Mn substitution.
CERAMICS INTERNATIONAL
(2021)
Article
Polymer Science
Chandni Devi, Ram Swaroop, Anil Arya, Shweta Tanwar, A. L. Sharma, Sandeep Kumar
Summary: A systematic study of TiO2 nanowires incorporated polymer nanocomposite films prepared by a standard solution cast technique reveals improved electrical and electrochemical properties compared to polymer-salt complex films, showcasing potential for electric double-layer capacitor applications.
Article
Physics, Applied
Komal Kanwar, M. Vasundhara, Sandeep Kumar, Pradip Kumar, S. D. Kaushik, Neeraj Panwar
Summary: The optical, magnetic, and magnetocaloric properties of HoCr0.5Mn0.5O3 compound were thoroughly investigated. Multicolour photoluminescence emission was observed under the excitation of 294 nm wavelength. The compound exhibited a Neel transition temperature around 66 K, accompanied by an anomaly at approximately 12 K, indicating a second-order magnetic phase transition. The magnetic entropy change - Delta S was measured to be 8.6 J kg(-1) K-1 at 12 K under a 5-T magnetic field, which is higher than the reported value for HoCrO3 ceramic and comparable to HoMnO3 single crystal. The compound shows a relative cooling power (RCP) value of 317 J/kg. The combination of high RCP, significant - Delta S, and a second-order magnetic transition suggests the potential of this compound for magnetic refrigeration in the cryogenic temperature range, as well as its application as a room temperature phosphor material.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2022)
Article
Engineering, Electrical & Electronic
Alisha Arora, Satyendra Mourya, Neetika Singh, Sandeep Kumar, Ramesh Chandra, V. K. Malik
Summary: The fabrication of silicon carbide (SiC) thin films, which are essential for high-temperature and high-power applications, has been a major challenge in wide bandgap semiconductor research. This work presents the growth of crystalline thin film on p-type silicon substrate at high temperature (> 900 degrees C), unlike most reported SiC thin films produced by RF sputtering that are amorphous. A metal-semiconductor-metal (MSM) device with gold (Au) electrodes is fabricated, and unique current-voltage (I-V) characteristics are observed in different voltage regimes. The analysis of the I-V characteristics reveals two dominant current transport mechanisms, namely variable range hopping mechanism (VRH) below 1 V and ohmic conduction followed by space charge limited conduction (SCLC) above 1 V. This study also provides valuable information about disorder states, trap centers, interface states, and deep traps, which can be utilized for the design of opto-electronic, magnetic, and efficient energy storage devices to maximize performance.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Correction
Physics, Applied
A. Johannes, S. Noack, W. Paschoal, S. Kumar, D. Jacobsson, H. Pettersson, L. Samuelson, K. A. Dick, G. Martinez-Criado, M. Burghammer, C. Ronning
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2015)