Article
Engineering, Environmental
Hang Dong, Miao Xie, Mingzhi Cai, Hao Liu, Zhuang Zhang, Bin Ye, Pei Zhao, Wujie Dong, Fuqiang Huang
Summary: In this study, a facile fluorine glaze modification method is proposed to improve the performance of nickel-rich layered cathode, preventing grain cracking and surface collapse, and promoting lithium-ion transport.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yanchen Liu, Yafen Chen, Jing Wang, Wei Wang, Zhiyu Ding, Leyuan Li, Yang Zhang, Yida Deng, Junwei Wu, Yanan Chen
Summary: The hierarchical yolk-shell structured Li1.2Mn0.54Ni0.13Co0.13O2 cathode shows an initial coulombic efficiency of 85.8% and outstanding capacity retention rates of 89.1% after cycling at 2.0 C for 200 cycles. After cycling at 10.0 C for 500 cycles, the capacity retention rate is 93.8%, and for 1,000 cycles, it is 85.2%.
Article
Chemistry, Physical
Meng Wang, Yongqiang Han, Mo Chu, Lin Chen, Meng Liu, Yijie Gu
Summary: The effects of cerium doping and the formation of layered-spinel hetero-structure on the electrochemical properties of lithium-rich cathode material were studied. Cerium doping and formation of spinel phase facilitated lithium ion diffusion and inhibited structural collapse during cycling, leading to improved cycling stability and rate capability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Mengtian Yu, Xuefei Wei, Xiuqin Min, Anbao Yuan, Jiaqiang Xu
Summary: Surface modification with In2O3 can improve the electrochemical performance of lithium-rich layered cathode materials, especially in terms of initial Coulombic efficiency, rate capability, and cycle stability. This modification with a moderate amount of In2O3 enhances electrical conduction and suppresses the growth of the solid electrolyte interphase film.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Pei Li, Yangyang Chen, Rui Li, Bo Yu, Wang Pu, Mingshan Wang, Junchen Chen, Zhiyuan Ma, Bingshu Guo, Xing Li
Summary: A novel flame retardant fluorine-rich electrolyte (FFT) was designed and studied in this research, which exhibited noninflammability, low viscosity, good wettability and fluidity, and high oxidation stability. The electrolyte enabled high-energy density lithium metal batteries to maintain good capacity performance and exhibited excellent discharge capacity at low temperatures.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Ceramics
Rui He, Aijia Wei, Xue Bai, Lihui Zhang, Xiaohui Li, Jinping Mu, Xi Zhang, Jianmin Ge, Zhenfa Liu
Summary: The recent development of Li-ion batteries based on Ni-rich cathodes with high specific capacity has sparked significant interest. However, the challenge of rapid capacity decay and poor thermal stability faced by cathodes with high Ni concentration has prompted the exploration of alternative solutions, such as in situ coating methods like the application of a LaPO4/Li3PO4 (LP) layer. The LP-modified cathode material demonstrates improved capacity retention and resistance to microcracking during charge/discharge cycling.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Sung-Beom Kim, Hyeona Kim, Deok-Hye Park, Ji-Hwan Kim, Jae-Hoon Shin, Jae-Sung Jang, Sang-Hyun Moon, Jin-Hyuk Choi, Kyung-Won Park
Summary: Ni-rich cathode materials doped with varying amounts of F using a solid-state reaction method show improved cycling performance due to strong bonding between transition metals and F, as well as enhanced Li+ ion transport behavior. However, when the F doping level exceeds the optimal amount, Li/Ni antisite defects cause deteriorated Li+ ion transport, leading to decreased performance in lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2021)
Article
Engineering, Environmental
Rasu Muruganantham, Tzu-Hsin Tseng, Meng-Lun Lee, Soorathep Kheawhom, Wei-Ren Liu
Summary: This study proposes a method of plasma-modified TiN to improve the electrochemical performance and stabilize the cathode-electrolyte interface reaction of Ni-rich LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode material. The physicochemical properties, Li storage performance, and factors for improving the electrochemical performance were systematically investigated. The NCM811-TiN/graphite pouch cell showed high reversible capacity and cycle stability without changing the bulk structure and morphology, facilitating the practical use of safe and high-energy-density Li-ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Zhi Li, Heng Li, Shuang Cao, Wei Guo, Jiali Liu, Jiarui Chen, Changmeng Guo, Gairong Chen, Baobao Chang, Yansong Bai, Xianyou Wang
Summary: This paper proposes a strategy to improve the reversibility and structural stability of Li-rich cathode materials by introducing a spinel-layered coherent structure and S-anions. Experimental results confirm that the strategy enhances the reversible discharge capacity and initial Coulombic efficiency. The optimized material exhibits high reversible discharge capacity and good cyclic performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
C. Gervillie-Mouravieff, L. Albero Blanquer, C. Alphen, Jiaqiang Huang, J. -M. Tarascon
Summary: In this study, temperature data were collected using optical fiber Bragg grating sensors placed inside commercial pouch cells, allowing for monitoring the heat release during the formation cycles and real-driving cycling. The research provides insights into the contribution of the anode and the impact of additives on overall heat generation, as well as a comparison of the heat generation of NMC-based batteries under varying power and voltage levels. Continuous monitoring of battery heat release throughout its lifespan enhances our understanding of interconnected materials surfaces and electrolyte reactions.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
M. A. A. Mohamed, L. Singer, H. Hahn, D. Djendjur, A. Oezkara, E. Thauer, I. G. Gonzalez-Martinez, M. Hantusch, B. Buechner, S. Hampel, R. Klingeler, N. Graessler
Summary: In this study, an antiperovskite (Li2Fe)SeO material was synthesized using a one-step solid-state method. The material showed excellent thermal stability and high cycling performance, making it a promising cathode material for lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Elena Makhonina, Lidia Pechen, Anna Medvedeva, Yury Politov, Aleksander Rumyantsev, Yury Koshtyal, Vyacheslav Volkov, Alexander Goloveshkin, Igor Eremenko
Summary: Li-rich Mn-based layered oxides are promising cathode materials for lithium-ion batteries, but suffer from capacity fading and voltage decay. Doping with Mg can improve the electrochemical performance, and introducing Mg in TM layers is more preferable.
Article
Chemistry, Physical
Changkun Song, Wangjun Feng, Zhaojiao Shi, Zhaoyu Huang
Summary: In this study, layered cathode material Li1.2Mn0.54Ni0.13Co0.13O2 was prepared using the sol-gel method and then coated with TiO2 nanoparticles. The coated materials showed improved structure and morphology, leading to significant enhancement in electrochemical performance.
Article
Chemistry, Multidisciplinary
Lidia Pechen, Elena Makhonina, Anna Medvedeva, Yury Politov, Aleksander Rumyantsev, Yury Koshtyal, Alexander Goloveshkin, Igor Eremenko
Summary: Li-rich oxides are promising cathode materials for Li-ion batteries. Different compositions of Li-rich materials and various electrochemical testing modes were investigated. The structure, chemical composition, and morphology of the synthesized materials were studied. Electrochemical study showed that an increase in the upper voltage limit was needed to improve cycling performance. A lower cut-off potential was required for better cyclic performance. LMR35 cathode material demonstrated the best functional properties among all compositions studied.
Article
Nanoscience & Nanotechnology
Chenkun Li, Yao Xiao, Xiaosong Zhang, Hongwei Cheng, Ya-Jun Cheng, Yonggao Xia
Summary: This study presents a practical method to address the irreversible capacity loss of lithium-ion batteries during initial cycling by utilizing a Li2CO3/carbon nanocomposite as a lithium replenishment material. The nanocomposite, synthesized through high-speed ball-milling, exhibits high specific capacity and capacity retention in the initial charging cycle. By incorporating the nanocomposite in full-cells, the capacity and cycling life of the batteries are significantly improved.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Correction
Chemistry, Physical
R. N. Ramesha, Dasari Bosubabu, Karthick M. G. Babu, K. Ramesha
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Gnanavel Angamuthu, Dasari Bosubabu, K. Ramesha, Venkatesan Rengarajan
Summary: Lithium-Sulfur batteries have high energy density but face challenges such as insulating sulfur, slow electrode kinetics, polysulfide shuttle, and poor capacity retention. A new cathode composite system has been developed to address these issues effectively, achieving high capacity retention.
APPLIED MATERIALS TODAY
(2021)
Article
Materials Science, Multidisciplinary
Dasari Bosubabu, V Parthiban, A. K. Sahu, K. Ramesha
Summary: This study presents nitrogen-doped graphene-like carbon material N-GLC for alkaline fuel cells, showing excellent ORR activity and achieving high peak power density. N-GLC could be a cost-effective alternative ORR catalyst for AEMFC applications.
BULLETIN OF MATERIALS SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Zhen Meng, Zhenyou Li, Liping Wang, Thomas Diemant, Dasari Bosubabu, Yushu Tang, Romain Berthelot, Zhirong Zhao-Karger, Maximilian Fichtner
Summary: In nonaqueous Mg batteries, adding bismuth triflate (Bi(OTf)(3)) can enhance the Mg plating/stripping process by reducing the impact of adsorbed species on the Mg surface and increasing the resistance to passivation through the formation of Bi/Mg3Bi2 on the Mg metal surface.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Energy & Fuels
Jeevanantham Sivaraj, Dasari Bosubabu, K. Ramesha
Summary: This study uses MnCo2O4 microspheres as polysulfide anchors and conversion catalysts to improve the performance of Li-S batteries, addressing challenges such as poor conductivity of sulfur, polysulfide shuttle effect, poor cycle life, and sluggish reaction kinetics.
Article
Electrochemistry
Pedda Masthanaiah Ette, Dasari Bosubabu, K. Ramesha
Summary: The combination of graphene and mesoporous MnO2 in composite materials as anode for Li-ion batteries exhibits good cycling stability and rate performance. The synergetic effects of the mesoporous structure and graphene contribute to the high discharge capacity and superior electronic conductivity of the composites.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Ramakumar Sampathkumar, M. G. Karthick Babu, Evan Kurian, R. N. Ramesha, Dasari Bosubabu, K. Ramesha
Summary: This study investigates the use of a composite quasi-solid electrolyte to improve the interfacial contact between the solid electrolyte and electrodes in solid-state lithium batteries. The results show that the direct coating of the electrolyte paste onto the lithium metal anode reduces interfacial resistance and dendrite formation, leading to improved performance and stability in lithium-ion batteries.
Article
Energy & Fuels
Guruprakash Karkera, Mervyn Soans, Bosubabu Dasari, Ediga Umeshbabu, Musa Ali Cambaz, Zhen Meng, Thomas Diemant, Maximilian Fichtner
Summary: Rechargeable chloride-ion batteries (CIBs) are a promising battery technology with the potential to offer high theoretical volumetric capacities, lower cost, and higher abundance. The challenge lies in finding suitable electrodes and electrolytes. In this study, tungsten oxychloride is introduced as a cathode material for CIBs, demonstrating good electrochemical performance and reversible capacity. Postmortem analysis reveals the reversible transfer of chloride ions between electrodes through a conversion mechanism, paving the way for the use of tungsten chloride-based electrode materials for battery applications.
Article
Chemistry, Physical
Liping Wang, Thomas Diemant, Zhenyou Li, Bosubabu Dasari, Zhirong Zhao-Karger
Summary: Magnesium-chalcogen batteries show great potential as post lithium battery systems for large-scale energy storage due to their high energy density, material sustainability, safety, and cost. However, the formation of soluble reaction intermediates during the electrochemical processes can lead to failure of the Mg metal anode, limiting the cycle life of the batteries. A thorough examination of the anode failure mechanism reveals that it is caused by inhomogeneous Mg deposition induced by soluble intermediates from chalcogen cathodes. The use of a multifunctional 3D current collector is proposed to decrease local current density and regulate Mg deposition behavior, providing guidance for anode design and enhancing the lifespan of Mg-chalcogen batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Energy & Fuels
Jeevanantham Sivaraj, Bosubabu Dasari, K. Ramesha
Summary: A lithium-sulfur battery with Co3V2O8 hollow microspheres as catalyst additives is developed to address the shuttle effect caused by the dissolution of lithium polysulfides. The Co3V2O8 acts as a bifunctional additive, immobilizing the LiPS through V-S and Li-O interactions and facilitating the conversion of long-chain LiPS into short ones. The hollow microspheres also serve as a sulfur reservoir, confining more LiPS and inhibiting the shuttle effect. The Li-S cell demonstrates high initial discharge capacity, good cycle stability, and excellent rate capability.
Article
Chemistry, Physical
Guruprakash Karkera, Mervyn Soans, Ayca Akbas, Raiker Witter, Holger Euchner, Thomas Diemant, Musa Ali Cambaz, Zhen Meng, Bosubabu Dasari, Shivaraju Guddehalli Chandrappa, Prashanth W. Menezes, Maximilian Fichtner
Summary: In this work, a structurally revivable, chloride-ion conducting solid electrolyte (SE), CsSn0.9In0.067Cl3, with a high ionic conductivity of 3.45 x 10(-4) S cm(-1) at 25 degrees C is investigated. The suitable properties of CsSn0.9In0.067Cl3 as an electrolyte are demonstrated by designing all-solid-state batteries.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Liping Wang, Thomas Diemant, Zhenyou Li, Bosubabu Dasari, Zhirong Zhao-Karger
Summary: Magnesium-chalcogen batteries are potential alternatives to lithium batteries for large-scale energy storage applications due to their advantages in energy density, material sustainability, safety, and cost. However, the formation of soluble reaction intermediates during the electrochemical processes can cause failure in the magnesium metal anode, limiting the cycle life of the batteries. This study thoroughly examines the failure mechanism, which is induced by inhomogeneous magnesium deposition promoted by soluble intermediates from chalcogen cathodes. A multifunctional 3D current collector is proposed to decrease local current density and regulate magnesium deposition behavior to solve this anode failure problem. These findings are expected to guide anode design, enhance the lifespan of magnesium-chalcogen batteries, and contribute to the development of other magnesium metal batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
M. Pissas, D. Stamopoulos, A. Arulraj, K. Prassides
Summary: The La1-xCaxMnO3 compounds exhibit novel spin, orbital, and charge-ordering states when the calcium concentration is a simple fraction. The magnetic structure of La1-xCaxMnO3 for 0.51 ≤ x ≤ 0.56 can be described by two propagation vectors, while for 0.57 ≤ x ≤ 0.61, two magnetic phases co-exist with different magnetic structures. The presence of a mixed orbital state of the manganese ions may explain the sinusoidal modulated structure observed.
Article
Electrochemistry
Dasari Bosubabu, Sampathkumar Ramakumar, Sivaraj Jeevanantham, Inthumathi Kanagaraj, Pamula Balaji Bhargav, Nafis Ahmed, Kannadka Ramesha
Summary: In this study, a highly lithophilic LixSiOy layer was successfully formed on carbon cloth (CC) through lithiation of 100 nm thin SiO2, which effectively suppressed the growth of lithium dendrites. The symmetric cell exhibited ultra-stable cycling performance over 1000 hours even at a high current density, and the lithiated SiO2@CC used as a lithium metal-free anode showed stable capacity over 500 cycles. This work provides new insights and paves the way for developing dendrite-free, high-performance Li-S battery technology.
BATTERIES & SUPERCAPS
(2022)
Article
Chemistry, Physical
Dasari Bosubabu, Zhenyou Li, Zhen Meng, Li-Ping Wang, Maximilian Fichtner, Zhirong Zhao-Karger
Summary: The research on magnesium-sulfur (Mg-S) battery has revealed that the spontaneous formation of magnesium polysulfide leads to severe self-discharge, but using graphene-polyaniline coated carbon cloth as a protective interlayer can effectively adsorb the polysulfide and inhibit the self-discharge, thereby improving the performance of the battery.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)