Article
Chemistry, Physical
Huiying Lu, Ruifeng Qian, Lei Zhu, Tianhao Yao, Chao Li, Li Li, Hongkang Wang
Summary: Metal oxides have the potential to replace commercial graphite as anode materials for lithium ion batteries, with the controllable synthesis of amorphous/crystalline MnCo2Ox nanoparticles within porous carbon nanofibers showing promising results. The optimized material delivers high stable capacity and excellent electrode performance, attributed to the synergistic effect of its unique structure.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Ryohei Akiyoshi, Makoto Fujiwara, Yoshinobu Kamakura, Takeshi Shimizu, Ryo Inoue, Yasuhiro Morisaki, Akinori Saeki, Hirofumi Yoshikawa, Daisuke Tanaka
Summary: This study provides important structural insights into the design of packing structures for organic-molecule-based cathode active materials in lithium-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Ceramics
Bing Huang, Meng Wang, Guodong Xu, Lin Hu, Lin Chen, Yijie Gu
Summary: The study found that doping La into the lithium-rich cathode material improved capacity retention rate, rate capability, and Li+ diffusion coefficient. The presence of La stabilized the material structure, induced the formation of spinel phase, and provided additional diffusion channels for lithium ions. Additionally, the porous structure of the doped samples contributed to the excellent electrochemical performance.
CERAMICS INTERNATIONAL
(2021)
Review
Chemistry, Multidisciplinary
Changming Ding, Zhiyong Qiao
Summary: This article provides a comprehensive review on the design and development of electrospun nanomaterials for electrocatalytic reactions. It discusses the fundamentals and advantages of electrospinning, summarizes the distinctive advantages of electrospun materials, and presents the structure design and catalytic properties of electrospun 1D nanocatalysts for boosting electrocatalytic energy conversion. The article also offers a perspective on future directions and challenges for fabricating next-generation 1D electrospun nanocatalysts.
Article
Chemistry, Physical
Mohammad Amin Razmjoo Khollari, Mojtaba Khalili Azar, Mehdi Esmaeili, Naeim Malekpour, Seyed Morteza Hosseini-Hosseinabad, Roozbeh Siavash Moakhar, Abolghasem Dolati, Seeram Ramakrishna
Summary: Coating the NCM811 cathode material with TiO2 nanoparticles improves its structural stability, electrochemical performance, and safety at both room and high temperatures, leading to increased capacity retention and discharge capacity. Surface modification with TiO2 NPs is a practical and cost-effective method for enhancing the performance of the high energy density NCM811 cathode in commercial applications.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Engineering, Environmental
Min Li, Xianxian Zhou, Xiaotao Ma, Liang Chen, Ding Zhang, Shoudong Xu, Donghong Duan, Chengmeng Chen, Qinbo Yuan, Shibin Liu
Summary: The newly designed NG/CNTs-SO3- three-dimensional electrode effectively improves the performance of lithium-sulfur batteries by enhancing cycling stability and rate capability through the formation of a continuous ion-electronic conductive network and accelerating redox reaction kinetics.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Xinghui Liang, Hun Kim, Hun-Gi Jung, Yang-Kook Sun
Summary: A Li-substituted, tunnel/spinel heterostructured cathode has been successfully synthesized in this study, with Li dopant acting as a pillar to inhibit unfavorable multiphase transformation and provide 3D Na+ diffusion channels for improved sodium storage performance and redox reaction kinetics.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Nanoscience & Nanotechnology
Guangdi Nie, Zhenyuan Zhang, Tingting Wang, Ce Wang, Zongkui Kou
Summary: This study discusses the structure-activity relationship between 1D electrocatalysts prepared by electrospinning technology and their catalytic ORR performance. By summarizing the development and principles of the electrospinning technique, as well as the composition regulation- and structure design-oriented fundamentals, different structure-activity relationships were established through comparative studies of typical examples of nanofiber-shaped and nanofiber-supported electrocatalysts with different compositions and structures for ORR.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Can Wang, Xunlong Yuan, Huiyun Tan, Shuofeng Jian, Ziting Ma, Junjie Zhao, Xuewen Wang, Dapeng Chen, Yifan Dong
Summary: LiFePO4 as a cathode material for lithium-ion batteries shows great potential with high theoretical capacity and safety features. However, its future development is limited by low conductivity and diffusion rate. By utilizing a three-dimensional carbon-coated structure, LiFePO4 can achieve higher capacity, enhanced conductivity, and faster electron transport channels without the need for additional carbon sources during synthesis.
Article
Materials Science, Ceramics
Linglong Chen, Ying Tao, Huan Shang, Zhong Ma, Shuangjun Li, Haiyan Cao, Qian Li, Guisheng Li, Hexing Li, Shuning Xiao, Dieqing Zhang
Summary: This article reports an effective strategy to quickly synthesize electrode materials for lithium-ion batteries (LIBs) using a microwave-assisted hydrothermal method. The synthesized rutile TiO2 nanorods grown carbon nanotubes (R-TiO2 NR@CNTs) show excellent lithium storage performance with higher initial discharge capacity and excellent cycling performance. This may be attributed to the shortened electron transfer distance via one-dimensional pathways along the carbon nanotubes and nanorods.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Ni Bai, Ya-jun Ma, Ai-min Wang, Xinjiang Luo
Summary: Coating the high-voltage spinel LiNi0.5Mn1.5O4 cathode material with MoO3 oxides significantly improves its electrochemical cycling performance at both room and elevated temperatures, with capacity retention increasing to 90-93% after 100 cycles at 55 degrees C. This improvement is attributed to the stabilized structure of LiNi0.5Mn1.5O4 and reduced electrolyte decomposition and metal dissolution with MoO3 coating.
Article
Engineering, Environmental
Fanjun Kong, Guikai Zhang, Dajun Wu, Fei Sun, Shi Tao, Shengqi Chu, Bin Qian, Wangsheng Chu, Li Song
Summary: This study investigates the structural change of high-voltage spinel LiNi0.5Mn1.5O4 (LNMO) cathodes under a wide voltage range. It reveals a complex phase transformation process during deep discharge, resulting in structural distortion and capacity fading. These findings provide valuable insights into the performance degradation mechanism of spinel cathodes, contributing to the design of high-performance cathode materials for advanced lithium-ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Hsiu-Fen Lin, Ya-Ru Tsai, Chieh-Hsun Cheng, Si-Ting Cheng, De-Zhen Chen, Nian-Ying Wu
Summary: The study investigates the relationship between synthesis conditions using the coprecipitation method and the structural/electrochemical properties of LiCoMnO4. Doping with F element enhances the electrochemical performance of the material.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Matthew A. Limpert, Elyse A. Baroncini, Evans J. Gritton, Terrill B. Atwater, Eric D. Wachsman
Summary: This article investigates the electrochemical properties of lithium spinel and its doped materials. By doping and expanding the lattice, the specific capacity and cycling stability of the material can be improved.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Multidisciplinary
Gengen Peng, Haibo Li
Summary: A facile approach has been developed to prepare mesoporous shuttle-like FeP using MIL-88 as the template, which not only alleviates the volume expansion during desalination/salination process but also promotes ion diffusion dynamics. As a result, FeP electrode exhibits high desalting capacity and superior capacitance retention.
Article
Electrochemistry
Krishnan Subramanyan, Sanming Chen, Na Li, Tingting Ma, Yongping Liu, Sundaram Chandrasekaran, Vanchiappan Aravindan
Summary: We report a new low-voltage insertion anode based on MXene V4C3Tx and compare its electrochemical performance with ester and ether-based electrolytes in both half-cell and full-cell configurations. The results show that the ether-based electrolyte exhibits better retention ability and rate performance. In addition, the formation of a passivation layer in the carbonate-based electrolyte leads to increased initial Coulombic inefficiency. Full-cell tests with NVPC cathode also demonstrate that the ether-based electrolyte provides enhanced capacity, capacity retention, and rate performance compared to ester-based electrolytes.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Subramanian Natarajan, Manohar Akshay, Vanchiappan Aravindan
Summary: The design of lithium-ion capacitors (LICs) by hybridizing battery and supercapacitor electrodes has overcome the limitations of supercapacitors and batteries and achieved higher energy and power density. The development of high-performance LICs has been hindered by the slow diffusion of Li-ion in battery anodes. In this study, the regeneration of MnCO3 cuboids from spent LiMn2O4 cathodes is introduced for LICs applications, exhibiting excellent reversibility and high Coulombic efficiency. The LIC assembled with the regenerated MnCO3 anode and commercial activated carbon cathode demonstrates a maximum energy density of 169.4 Wh kg(-1) at 25 degrees C and long durability of 15,000 cycles, even at extreme temperatures.
Article
Chemistry, Physical
Krishnan Subramanyan, Vanchiappan Aravindan
Summary: Sodium-ion storage in graphite through solvent cointercalation mechanism shows excellent cycling stability, rate performance, and Coulombic efficiency. The graphite half cell exhibits a low working voltage and high power density, making it a versatile energy storage device. This perspective comprehensively investigates graphite-based sodium-ion full cells and discusses important factors such as electrolyte composition, cathode working voltage, irreversibility, precycling, and high current performance. The article also proposes general considerations for full-cell assembly.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Gwendolyn J. H. Lim, Rodney Chua, J. Justin Koh, Kwok Kiong Chan, Ernest Jun Jie Tang, Vanessa Teh, Madhavi Srinivasan
Summary: A combination of structural and conformable batteries can increase the payload capacity and alleviate 'range anxiety' in electric vehicles. The study focuses on integrating aqueous structural and conformable batteries into vehicles through a multifunctional direct approach and a multifunctional conformable approach. The batteries exhibit high mechanical stability and energy storage capability, and have been successfully applied in a prototype toy car, demonstrating their potential for widespread use in the design of new generation structural batteries. (c) 2023 Elsevier Ltd. All rights reserved.
MATERIALS TODAY ENERGY
(2023)
Article
Nanoscience & Nanotechnology
Huei Min Chua, Natalia Yantara, Yeow Boon Tay, Suriani Abdul Latiff, Subodh Mhaisalkar, Nripan Mathews
Summary: This study investigates the mitigation of energy level mismatch and exciton quenching caused by PEDOT:PSS in PeLEDs through the addition of work-function-tunable PSS Na to the PEDOT:PSS hole-transport layer (HTL). The addition of 6% PSS Na improves the external quantum efficiency and prolongs the operation stability of blue and sky-blue PeLEDs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Yuqi Guo, Rodney Chua, Yingqian Chen, Yi Cai, Ernest Jun Jie Tang, J. J. Nicholas Lim, Thu Ha Tran, Vivek Verma, Ming Wah Wong, Madhavi Srinivasan
Summary: Rechargeable aqueous Zn/S batteries with a unique hybrid aqueous electrolyte using ethylene glycol as a co-solvent are developed to address the issues of sulfur side reactions and zinc dendrite growth. The Zn/S battery exhibits an unprecedented capacity of 1435 mAh g(-1) and an excellent energy density of 730 Wh kg(-1) at 0.1 Ag-1, as well as a capacity retention of 70% after 250 cycles even at 3 Ag-1. The discharge mechanism involves sequential reduction of elemental sulfur by Zn, forming ZnS, while the charging process involves oxidation of ZnS and short-chain polysulfides back to elemental sulfur. This electrolyte design strategy and unique multi-step electrochemistry provide a new pathway for tackling both key issues and designing better Zn/S batteries in the future.
Article
Chemistry, Multidisciplinary
Joseph Jegan Roy, Ernest Jun Jie Tang, Minh Phuong Do, Bin Cao, Madhavi Srinivasan
Summary: Research on recycling electrode materials, particularly anode graphite, from spent lithium-ion batteries has gained attention due to economic benefits and environmental concerns. This study successfully recycled anode graphite from bioleaching residue, achieving a purity of 99.78% and demonstrating excellent electrochemical performance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Physics, Applied
Madhusoodhanan Lathika Divya, Yun-Sung Lee, Vanchiappan Aravindan
Summary: This work explores the potential of MoO2 nanorods as an anode material for lithium-ion capacitor (LIC) assembly. The material exhibits high discharge capacity and excellent cyclic stability. Its performance as an anode in LIC assembly is analyzed, and the effects of prelithiation and operating-voltage window are studied. The study demonstrates that MoO2-based LIC systems can be a strong competitor to graphite-based LIC configurations, offering enhanced safety features.
PHYSICAL REVIEW APPLIED
(2023)
Article
Materials Science, Multidisciplinary
Shaji Jyothilakshmi, Krishnan Subramanyan, Yun-Sung Lee, Vanchiappan Aravindan
Summary: A simple and green synthesis method for TiO2 bronze/anatase hybrid with excellent electrochemical performance as an anode for LIBs is reported. The Li-ion insertion/extraction properties are studied in both half and full-cell configurations, showing promising results in terms of discharge capacity and capacity retention. The TiO2 hybrids exhibit a maximum energy density of 192.75 Wh kg(-1) and good cyclability at room temperature conditions.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Manohar Akshay, Rajesh Belgamwar, Selvarasu Praneetha, Vivek Polshettiwar, Vanchiappan Aravindan
Summary: This work reports the synthesis of defect-engineered dendritic fibrous nanosilica (SiOx) and commercial activated carbon (AC) for lithium-ion capacitors (LICs). The LICs exhibit excellent electrochemical performance, with a maximum energy density of 169.7 Wh kg-1 at room temperature and ultralong durability of >48,000 cycles. The possibility of exploring LIC at different climatic conditions is also analyzed at various temperatures from -5 to 50 degrees C.
ACS MATERIALS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Nur Ayu Afira Sutrisnoh, Gwendolyn J. H. Lim, Kwok Kiong Chan, Karthikayen Raju, Vanessa Teh, J. J. Nicholas Lim, Derrick W. H. Fam, Madhavi Srinivasan
Summary: Structural batteries with the capability to store electrochemical energy and carry mechanical load are achieved using acid-oxidized carbon fibers as cathodes. The acid-oxidized CFC demonstrate high specific capacity and excellent mechanical performance, making them suitable for structural batteries.
ADVANCED ENGINEERING MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Yuqi Guo, Gwendolyn J. H. Lim, Vivek Verma, Yi Cai, Rodney Chua, J. J. Nicholas Lim, Madhavi Srinivasan
Summary: Solid-state zinc ion batteries (ZIBs) and aluminum-ion batteries (AIBs) are considered promising candidates for powering wearable devices due to their advantages of low cost, high safety, and tunable flexibility. However, their wide-scale practical application is hindered by various challenges at the material level. This Review discusses the root causes and detrimental effects of four main limitations, and explores strategies to mitigate each limitation and future research directions. Economic-performance metrics are also compared with Li-ion batteries to evaluate the viability of these technologies for wearable applications.
Article
Chemistry, Physical
Manohar Akshay, Sundaramurthy Jayaraman, Mani Ulaganathan, Yun-Sung Lee, Vanchiappan Aravindan
Summary: The second-generation supercapacitor is composed of a hybridized energy storage mechanism of Lithium-ion batteries and electrical double-layer capacitors, known as Lithium-ion capacitors (LICs). Electrospun SnO2 nanofibers are synthesized using a simple electrospinning technique and directly used as the anode material for LICs along with activated carbon (AC) as the cathode. The LIC, AC/(LixSn + Li2O), assembled after pre-lithiation of the SnO2 electrode, exhibited a maximum energy density of 185.88 Wh kg-1 and excellent cyclic durability of over 20,000 cycles. Additionally, the feasibility of using the LIC in different environmental conditions was studied by subjecting it to various temperature conditions (-10, 0, 25, & 50 degrees C).
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Parvathy Jayan, Anil Anjali, Sangho Park, Yun-Sung Lee, Vanchiappan Aravindan
Summary: Dual-ion batteries, utilizing graphite as a bi-functional electrode to reversibly store cations and anions, have shown great potential as energy storage devices. This study focuses on optimizing the Li-storage performance of SnO2 nanostructures as an alternative to graphite anodes. Additionally, the electrochemical performance of a DIB using recovered graphite and SnO2 nanostructures as the cathode and anode is evaluated, demonstrating a high discharge capacity. The study also assesses the adaptability of DIBs to different temperature conditions.
Article
Green & Sustainable Science & Technology
Sreekumar Sreedeep, Yun-Sung Lee, Vanchiappan Aravindan
Summary: The effect of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT) coating on the electrochemical properties of high voltage lithium cobalt manganese oxide (LCMO) cathodes is investigated. The results demonstrate that LCMO@PEDOT exhibits improved cycling performance and diffusion coefficient compared to pristine LCMO in a half-cell configuration. Furthermore, LCMO@PEDOT/LTO in a full-cell assembly displays superior electrochemical performance compared to pristine LCMO/LTO.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
