Article
Chemistry, Multidisciplinary
Dai Wang, Hui Xiea, Qiang Liu, Kexin Mu, Zhennuo Song, Weijian Xu, Lei Tian, Caizhen Zhu, Jian Xu
Summary: A low-cost cellulose acetate-based quasi-solid composite polymer electrolyte with high Li+ transference number and excellent interface stability was developed. The partially esterified side groups in the cellulose acetate matrix were found to enhance the migration of Li+ and improve electrochemical stability. This work provides a promising strategy for fabricating cost-effective, stable polymer electrolytes for solid-state lithium batteries.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Polymer Science
Abhimanyu Singh, Tejas Sharma, Pawan Singh Dhapola, Sushant Kumar, Diksha Singh, Gaurav Nath, Vijay Singh, Mustafa A. Alheety, Sunanda Kakroo, Pramod K. Singh
Summary: This paper used polymer polyethylene oxide as a host matrix and novel electrolyte ionic liquid 1-ethyl-3-methylimidazolium tricyanomethanide as a dopant to increase ionic mobility. Different characterization techniques were used to identify the properties of the solid polymer electrolyte. A laboratory scale supercapacitor was fabricated using optimized solid polymer electrolyte film and porous carbon derived from corn starch, showing a specific capacitance of 13.6 F/g at 50 mV/s scan rate.
HIGH PERFORMANCE POLYMERS
(2022)
Article
Engineering, Environmental
Seung Jae Moon, Hyo Jun Min, Chang Soo Lee, Du Ru Kang, Jong Hak Kim
Summary: A solid-state electrolyte film with high ionic conductivity, flexibility, and self-adhesive properties was developed based on a fluorinated, microphase-separated comb copolymer. The film showed excellent performance in solid supercapacitors, outperforming conventional electrolytes. This innovative electrolyte film eliminates the need for separators, adhesives, or packaging processes in supercapacitor fabrication.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Jiankang Gu, Yunzhe Jia, Xiaozhe Ren, Shu Li, Tianying Yan
Summary: In salt-in-ionic liquid electrolytes (SILEs), the coordination of lithium ion (Li+) with its anions affects the internal resistance and the formation of Li+-containing agglomerates (AGGs). Molecular dynamics simulations showed that a methyl substitution in the imidazolium cation can release trapped Li+ ions and reduce the formation of AGGs. This structural modification alters the transport properties of SILEs and improves the transference number of Li+.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Energy & Fuels
Abbas Ali Hor, Neetu Yadav, S. A. Hashmi
Summary: Enhancing interfacial redox activities by introducing a redox-active species in electrolytes is a latest strategy to enhance the performance characteristics of supercapacitors. In this study, an aqueous redox-active gel polymer electrolyte (R-GPE) is synthesized using a redox-active salt (trimethyl-sulfoxonium iodide, TMSI) added into an ionic liquid (1-ethyl-3-methylimidazolium chloride, EMICl), entrapped in a host polymer poly(vinyl alcohol). The R-GPE film exhibits high flexibility and excellent electrochemical properties, making it suitable for supercapacitor applications. Two supercapacitors are fabricated using R-GPE with and without TMSI, respectively, showing significantly improved performance with higher specific capacitance (-613 F g-1) and specific energy (-69 Wh kg-1) compared to the device without TMSI. The R-GPE-based supercapacitor demonstrates a moderate rate capability and good cycling stability.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Tianhong Zhou, Yan Zhao, Jang Wook Choi, Ali Coskun
Summary: A gel polymer electrolyte was developed with imidazolium ionic liquid end groups and perfluorinated alkyl chain to address challenges such as Li-dendrite growth and low interfacial stability in Li metal anodes. The electrolyte demonstrated high Li ion conductivity, high Li ion transference number and good electrochemical stability, effectively suppressing Li dendrite growth and exhibiting stable cycling performance.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Engineering, Environmental
Yang Li, Selim Halacoglu, Varun Shreyas, William Arnold, Xiaolin Guo, Qianqian Dou, Jacek B. Jasinski, Badri Narayanan, Hui Wang
Summary: This study demonstrates the use of an ionic liquid interlayer to address interfacial issues in sulfide-based solid-state sodium batteries (SSSBs). The interlayer stabilizes the Na metal/SSE interface, enabling the formation of a stable solid electrolyte interphase (SEI) and preventing harmful reactions and Na dendrite growth. Experimental and simulation results reveal that the stable SEI is composed of reduced products of TFSI-. Symmetric cells and FeS2||Na quasi-solid-state batteries exhibit stable cycling performance and high specific capacity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Polymer Science
Nacer Badi, Azemtsop Manfo Theodore, Saleh A. Alghamdi, Hatem A. Al-Aoh, Abderrahim Lakhouit, Aashis S. Roy, Ayshah S. Alatawi, Alex Ignatiev
Summary: In this study, solid flexible polymer blend electrolyte films composed of polyvinyl alcohol and polyvinyl pyrrolidone with different amounts of sodium thiocyanate were prepared. The addition of sodium thiocyanate improved the ionic conductivity, and the optimized ion-conducting polymer blend film showed good electrochemical stability and capacitance characteristics when used in a supercapacitor device with graphene oxide coated electrodes.
Article
Chemistry, Multidisciplinary
Mahasweta Chatterjee, Sumanta Sain, Atanu Roy, Sachindranath Das, Swapan Kumar Pradhan
Summary: A facile hydrothermal route was used to synthesize Co3O4 nanocrystals with urchin spine-like morphology. The electrochemical properties of the samples were explored in the presence of different electrolytes, showing that NaOH and Na2SO4 (with Hq) electrolytes resulted in high specific capacitances due to additional pseudocapacitive effects. The EIS plots indicated different semicircle diameters for different electrolytes, highlighting the variations in charge transfer resistance and ion-electrode interactions.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Materials Science, Composites
Gaurav Nath, Pawan S. Dhapola, N. G. Sahoo, Shruti Singh, Vijay Singh, Pramod K. Singh
Summary: A new polymer electrolyte, polyvinylpyrrolidone doped with salt ammonium iodide and plasticizer ethylene carbonate (EC), was prepared via solution casting technique for supercapacitor application. The conductivity (sigma) of the electrolyte was enhanced by doping EC, as confirmed by electrochemical impedance spectroscopy. Polarized optical microscopy, Fourier transform spectroscopy, and X-Ray diffraction results provided evidence for the reduction of crystallinity in the polymer electrolyte and the composite nature of the plasticized electrolyte.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2022)
Article
Engineering, Environmental
Wei Bao, Zhenyuan Hu, Yaying Wang, Jianghong Jiang, Shikang Huo, Weizhen Fan, Weijie Chen, Xiao Jing, Xinyang Long, Yunfeng Zhang
Summary: To develop next generation all-solid-state lithium metal batteries, it is important to have polyethylene oxide (PEO)-based electrolyte with low crystallinity and high Li+ transport channels. This study proposes a new type of oxyethyl containing poly(ionic liquid) modified graphene oxide nanoparticles (ox-PIL@GO) for preparing PEO based organic-inorganic composite electrolyte membranes (CPEs). Experimental and simulation results show that ox-PIL@GO can enhance LiTFSI dissociation and inhibit TFSI- movement, resulting in improved lithium transference number and reduced crystallinity of PEO, leading to high ionic conductivity and cycling performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
John S. Hardy, Aniruddha P. Kulkarni, Jeffry W. Stevenson, Olga A. Marina
Summary: This paper proposes test protocols for characterizing the fundamental electrical properties of solid oxide cell (SOC) materials, including conductivity measurements and determination of transference numbers.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Jiankang Gu, Xiaozhe Ren, Shu Li, Tianying Yan
Summary: In this study, molecular dynamics simulations were conducted to investigate the effect of functionalized derivatives in ionic liquid electrolytes on the transference number of lithium ions. The results showed that the inclusion of certain derivatives, such as [EMC-MIMTFSI], could enhance the transference number of lithium ions, leading to improved performance in lithium-ion batteries.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Inorganic & Nuclear
Jiaying Bi, Ling Zhang, Borong Wu, Meixia Xiao, Lei Wang, Zhao Li
Summary: The interaction between Li0.33La0.56TiO3 (LLTO) and metallic lithium leads to interfacial instability in LLTO-containing solid-state electrolytes. To improve stability, a heterogeneous composite electrolyte PVDF-HFP@LLTO/PEO (PLTP) is designed. The PLTP electrolyte demonstrates high ionic conductivity and stable electrochemical properties. The enhanced interfacial stability makes the heterogeneous electrolyte a promising alternative for solid-state lithium metal batteries.
DALTON TRANSACTIONS
(2023)
Article
Nanoscience & Nanotechnology
Zekun Zhou, Zengren Tao, Linyun Zhang, Xueying Zheng, Xieyi Xiao, Zhen Liu, Xin Li, Guangfeng Liu, Pengfei Zhao, Peng Zhang
Summary: A scalable manufacturing protocol is developed for polymer-based solvent-free all-solid flexible energy storage devices with superior ionic conductivity and mechanical stability, showing great potential for flexible energy storage applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Physics, Applied
Anurag Tiwari, Shishir K. Singh, Nitin Srivastava, Dipika Meghnani, Raghvendra Mishra, Rupesh K. Tiwari, Anupam Patel, Himani Gupta, Vimal K. Tiwari, Rajendra K. Singh
Summary: A novel sulfide-based inorganic solid electrolyte (Na11Sn2AsS12) was synthesized and characterized for its various properties. The results showed that the solid electrolyte exhibited good ionic conductivity, thermal stability, and electrolyte properties suitable for solid-state sodium ion battery applications.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Anupam Patel, Himani Gupta, Shishir K. Singh, Nitin Srivastava, Raghvendra Mishra, Dipika Meghnani, Rupesh K. Tiwari, Anurag Tiwari, Vimal K. Tiwari, Rajendra K. Singh
Summary: A layered composite material composed of graphitic carbon nitride and reduced graphene oxide is introduced as a negative electrode material for rechargeable sodium ion batteries. The composite material exhibits excellent cyclability and high columbic efficiency, making it a promising strategy for developing low-cost and long cycle life sodium ion batteries.
Article
Electrochemistry
Dipika Meghnani, Rajendra Kumar Singh
Summary: In this study, a biphase O'3/O3 layered NaNi0.815Co0.15Al0.035O2 cathode material (Na-NCA) is synthesized using different chemical routes. The Na-NCA cathode prepared using hydrothermal method shows better sodium ion kinetics and electrochemical performance compared to other methods.
ELECTROCHIMICA ACTA
(2022)
Article
Electrochemistry
Shishir K. Singh, Dimple P. Dutta, Himani Gupta, Nitin Srivastava, Raghvendra Mishra, Dipika Meghnani, Rupesh K. Tiwari, Anupam Patel, Anurag Tiwari, Rajendra K. Singh
Summary: In this study, a double-layer coated Li-NMC111 cathode with improved electrochemical performance was synthesized, and a freestanding/flexible nanocomposite gel polymer electrolyte suitable for high-temperature Li-battery applications was prepared. The optimized cathode material with the flexible nanocomposite gel polymer electrolyte exhibited high discharge capacity and energy density.
ELECTROCHIMICA ACTA
(2022)
Article
Energy & Fuels
Raghvendra Mishra, Shishir K. Singh, Nitin Srivastava, Rupesh K. Tiwari, Dipika Meghnani, Anupam Patel, Anurag Tiwari, Vimal K. Tiwari, Rajendra K. Singh
Summary: A high-capacity and long-life layered NMC cathode material coated with Na2SiO3 and RGO has been synthesized and tested for half-cell and full-cell applications. The coating layers provide diffusion channels for Na-ion migration and electron-conducting pathways for enhanced charge transfer. The dually surface-modified cathode exhibits superior electrochemical performance with improved Na-ion kinetics, resulting in high capacity retention and coulombic efficiency in both half-cell and full-cell testing.
Article
Nanoscience & Nanotechnology
Rupesh K. K. Tiwari, Raghvendra Mishra, Anupam Patel, Anurag Tiwari, Dipika Meghnani, Rajendra K. K. Singh
Summary: This research focuses on preventing polysulfide migration in Lithium-sulfur batteries (LiSBs) by using an electrostatic rejection and trapping strategy. An SIL-based IC-GPM70 interlayer membrane with high lithium-ion conductivity and thermal stability is introduced to suppress the migration of polysulfide and prevent its dissolution in the electrolyte. The prepared IC-GPM70 interlayer greatly improves the cycling stability, rate performance, and structural integrity of LiSBs, making them a viable alternative to conventional LiBs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Engineering, Environmental
Vimal K. Tiwari, Rajendra Kumar Singh
Summary: Due to the scarcity and high cost of lithium-based energy storage systems, sodium-ion batteries have emerged as a potential alternative, utilizing low-cost components such as abundant sodium as an anode. However, their practical application has been significantly limited by structural instability, low conductivity, severe polarization, and low operating potential. To address these challenges, surface engineering of cathode materials through nanostructured organic and inorganic coatings has been explored to improve their performance by providing uniform charge distribution, enhancing strength, facilitating fast electron and ion transport, and preventing undesirable reactions at the cathode-electrolyte interface.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Anurag Tiwari, Dipika Meghnani, Raghvendra Mishra, Rupesh Kumar Tiwari, Anupam Patel, Rajendra Kumar Singh
Summary: Recently, sodium super-ionic conducting (NASICON) type solid electrolytes, known for their high ionic conductivity, low cost, and excellent stability, have attracted attention for next generation batteries. In this study, a NASICON-type solid electrolyte, Na3Zr2Si2PO12, is synthesized using a solution assisted-solid state reaction (SA-SSR) method and sintered at different temperatures. The optimized electrolyte exhibits wide electrochemical stability and is used to assemble a sodium half-cell, which delivers high discharge capacity and good capacity retention.
JOURNAL OF POWER SOURCES
(2023)
Article
Electrochemistry
Rupesh K. Tiwari, Shishir K. Singh, Nitin Srivastava, Raghvendra Mishra, Dipika Meghnani, Anupam Patel, Anurag Tiwari, Vimal K. Tiwari, Rajendra K. Singh
Summary: A mesoporous and conducting carbon-rich graphitic carbon nitride (GCN) nanosheets host covered by nano sulfur copolymer is reported as a cathode material for rechargeable lithium-sulfur batteries (LiSBs) with high capacity and long cyclability.
BATTERIES & SUPERCAPS
(2022)
Article
Energy & Fuels
Nitin Srivastava, Shishir Kumar Singh, Dipika Meghnani, Rajendra Kumar Singh
Summary: In this study, a high capacity layered Li/Mn-rich NMC cathode and nanocomposite blend gel polymer electrolytes (NBGPEs) were synthesized. The NBGPE with 2 wt.% SiO2 nanofiller exhibited the highest ionic and Li-ion conductivity, as well as wide electrochemical stability. The electrochemical performance of the cell using this cathode and NBGPEs was investigated and showed promising results.
