Article
Chemistry, Physical
Jiayi He, Shuxin Zhuang, Zhiheng Wang, Gaoxing Sun, Xiaoxiao Pan, Yuqing Sun, Mi Lu, Feiyue Tu
Summary: A monocrystalline LiMn2O4 with a regular truncated octahedral structure was successfully synthesized using a facile and low-cost carbon template sol-gel method. By adjusting the carbon template content, the phase composition and morphology of LiMn2O4 can be controlled, leading to a nanoporous network structure composed of truncated nano-octahedrons with high crystallinity. The high crystallinity suppresses Jahn-Teller distortion and the {111} surfaces inhibit Mn dissolution, improving the cycle stability, while the nanoporous network structure facilitates Li+ diffusion and the {100} and {110} surfaces promote Li+ diffusion, increasing the discharge capacity and rate capability. The obtained LMO-0.5 sample exhibits remarkable discharge specific capacity (135.8 mA h/g at 0.1 C), excellent rate capability (91.2 mA h/g even at 20 C), and prominent cycle stability (a capacity retention of 91.7% after 2000 cycles at 20 C), making it an ideal cathode material for developing long-lifespan lithium-ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Aleksei Llusco, Luis Rojas, Svetlana Ushak, Mario Grageda
Summary: The potential advantages of active electrode nanomaterials have led to the development of high energy and power density lithium-ion batteries. In this study, purified Mg(OH)(2) extracted from waste generated in the production of Li2CO3 using natural brines from the Salar de Atacama in Chile was used as a doping agent for the synthesis of LiMn2O4 spinel octahedral nanoparticles co-doped with excess Li and Mg. Optimum electrochemical performance was achieved for Li1.03Mg0.05Mn1.92O4 spinel sintered at 750°C, showing promising potential for battery applications.
Article
Electrochemistry
Seong-Nam Lee, Deok-Hye Park, Ji-Hwan Kim, Sang-Hyun Moon, Jae-Sung Jang, Sung-Beom Kim, Jae-Hoon Shin, Yu-Yeon Park, Kyung-Won Park
Summary: Fe-doped truncated octahedral LiMn2O4 (LMO) cathodes were synthesized in this study to improve the stability of LMO in Li-ion batteries (LIBs). The results showed that the Fe-doped LMO cathode with an appropriate amount of dopant exhibited the best LIB performance, with the highest Li+ ion diffusivity.
Article
Chemistry, Physical
Haipeng Li, Collins Erinmwingbovo, Johannes Birkenstock, Marco Schowalter, Andreas Rosenauer, Fabio La Mantia, Lutz Maedler, Suman Pokhrel
Summary: In this study, nanoscale phase-pure and crystalline LiMn2O4 spinel was successfully synthesized by single flame spray pyrolysis, and LiMn2O4 was homogeneously mixed with different percentages of AlPO4 using versatile multiple flame sprays. The LMO nanoparticles of 17.8 nm showed the best electrochemical performance, and the capacity retention was increased to 93% with an initial capacity of 116.1 mA h g(-1) by incorporating 1% AlPO4.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Linqiao Liang, Haiyang Liu, Yongshun Liang, Yiyao Li, Wei Bai, Junming Guo, Mingwu Xiang
Summary: A new Ni-Zn dual-doping strategy was proposed to synthesize various LiNi0.05ZnxMn1.95-xO4 (x = 0-0.05) materials with good spinel structure and unique polyhedron morphology. The Ni-Zn co-doping effectively alleviated the problems of manganese dissolution and Jahn-Teller effect. The optimized LiNi0.05Zn0.02Mn1.93O4 cathode showed good electrochemical performance with high initial discharge capacity and long cycle stability, making it a promising cathode material for lithium-ion batteries.
Article
Engineering, Environmental
Ruibai Cang, Ke Ye, Shuangxi Shao, Kai Zhu, Jun Yan, Guiling Wang, Dianxue Cao
Summary: Aqueous batteries are suitable for large-scale storage applications due to their high safety level, low cost, and excellent durability. A new anode material, PTC-S, has been reported to be more stable in aqueous Mg-Li ion batteries compared to other electrode materials. By using PTC-S and LiMn2O4 as cathode and anode materials, a dual-ion salt aqueous battery exhibits high capacity and excellent cycling stability.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Yaoyao Ma, Lu Lv, Yuwen Dai, Qinghua Zhou, Jinming Cheng, Huili Li, Wei Hu
Summary: This study systematically investigated the structure and electrochemical properties of Ti-doped LiMn2O4 through spin-polarized GGA + U calculations. The findings reveal that Ti doping stabilizes the spinel framework, increases unit cell volume, facilitates lithium ion diffusion, and enhances intercalation voltage. This provides insights into the microscopic mechanism of Ti-doping to improve the performance of LiMn2O4 as a cathode material and advances the development of lithium-ion batteries based on LiMn2O4.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Electrochemistry
R. Trocoli, A. Morata, C. Erinmwingbovo, F. La Mantia, A. Tarancon
Summary: This study investigated the self-discharge process in aqueous rechargeable lithium-ion batteries, revealing that the lower stability of water leads to more favorable self-discharge characteristics compared to organic electrolytes. The self-discharge process can be divided into three different regions with a sequential lower decay rate of voltage and capacity.
ELECTROCHIMICA ACTA
(2021)
Article
Nanoscience & Nanotechnology
Evilus Rada, Enio Lima, Fabricio Ruiz, Sergio Moreno
Summary: The synthesis of small hollow porous LiMn2O4 nanostructures has been shown to improve contact area with electrolyte, leading to enhanced discharge capacity retention and Li+ diffusion coefficient compared to bulk LiMn2O4.
Article
Materials Science, Ceramics
Hadi Sharifidarabad, Alireza Zakeri, Mandana Adeli
Summary: Due to the shortage of primary resources and environmental concerns, proper management of electronic waste is crucial. This study focused on the co-recycling of used zinc-carbon and lithium-ion batteries to recover manganese and lithium for the synthesis of LiMn2O4 spinel cathode. The synthesized cathode material exhibited good electrochemical properties.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Xiaojie Zhang, Xiong Lan, Yongbao Feng, Xianzhen Wang, Shuo Kong, Ziming Xu, Zhenping Ma, Wenbin Gong, Yagang Yao, Qiulong Li
Summary: This study successfully developed a high-performance flexible aqueous rechargeable lithium-ion battery. By designing binder-free 3D Ni-doped LiMn2O4 nanosheets as the cathode material, the battery's performance can be enhanced and the cycle life can be prolonged. The quasi-solid-state device constructed using this cathode material and a rugby-shaped NaTi2(PO4)(3)/CC as the negative electrode exhibits remarkable electrochemical performance and flexibility.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Green & Sustainable Science & Technology
J. Zhou, J. Bing, J. Ni, X. Wang, X. Guan
Summary: This study presents a comprehensive approach to recycle waste LiMn2O4 cathodes using the pH gradient generated in a neutral water electrolyzer. The method does not require the addition of external acid, base, or chemical reductant, and allows for the complete recovery of waste LiMn(2)O(4) while generating valuable byproducts.
MATERIALS TODAY SUSTAINABILITY
(2022)
Article
Energy & Fuels
Nitheesha Shaji, Feng Jiang, Jae Yoon Sung, Murugan Nanthagopal, Taehyung Kim, Byeong Jin Jeong, Soon Phil Jung, Chang Woo Lee
Summary: This study focuses on surface modification of LiFePO4 (LFP) cathode material for lithium-ion batteries (LIBs) using heteroatoms-doped carbon. The results demonstrate that the nitrogen and sulfur dual-doped carbon coating layer enhances the electrochemical activity, cycling stability, and rate capability of the NSC@LFP cathode.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Ki-Wook Sung, Dong-Yo Shin, Hyo-Jin Ahn
Summary: Interface engineering with Nb-doped TiO2 (NTO) functional layer improves the structural stability and cycling stability of LiMn2O4 (LMO) cathode material, while enhancing the electron/ion transfer rate.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Electrochemistry
H. Hohyun Sun, Glenn R. R. Pastel, Sheng S. S. Zhang, Dat T. T. Tran, Jan L. L. Allen
Summary: This study investigates the effect of aluminum doping on highly Ni-rich layered Li[Ni0.90Co0.05Mn0.05]O-2 cathodes. The results show that aluminum is effective in enhancing the electrochemical performance of the cathode at concentrations higher than 1%, but becomes detrimental at 3% or greater concentrations. The cathode with 2% aluminum doping delivers the most optimal electrochemical performance.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Yong An, Yao Cheng, Shengping Wang, Jingxian Yu
Summary: Although employing solid polymer electrolytes (SPEs) in solid-state Li-S batteries (SSLSBs) is a promising approach to obtain both high energy density and safety, the actual cycle property is still rather unsatisfactory. In this work, a coupling effect between lithium polysulfides (LiPSs) and polyethylene oxide (PEO)-based SPEs was identified as the cause of poor cycle life in lithium anodes of SSLSBs. By introducing a fluorine-rich polymer perfluoropolyether alcohol (PFA) as an interfacial layer, the corrosion of lithium metal from LiPSs and the electrochemical decomposition of PEO-based SPEs were effectively prevented, leading to improved performance of the PEO-based SSLSBs with PFA interlayer.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Electrochemistry
Huixi Li, Wen Zhao, Pengcheng Chai, Yifan Zhang, Xiaoyan Zhu, Shengping Wang
Summary: Researchers have successfully prepared a three-dimensional FeOOH@NiCo2S4/NF core-shell heterostructure electrocatalyst that demonstrates good activity and stability for overall water splitting. The excellent performance of the catalyst is attributed to the large electrolyte contact interface, good electronic conductivity, large surface exposure of active sites, and strong electron interaction between FeOOH and NiCo2S4.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Yong An, Hongquan Wang, Zhigao Yang, Jingxian Yu, Shengping Wang
Summary: An integrated configuration of organic active material electrode-solid polymer electrolyte has been synthesized via in situ polymerization. The use of a bridge - the naphthalene urethane bond - improves the Li+ transport at the electrode/SPE interface, resulting in enhanced electrochemical and safety performance of the battery.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Zhuowen Wang, Luluan Feng, Chao Deng, Shengping Wang
Summary: A polyether polymer separator has been reported as a shuttle-inhibiting layer and electrocatalyst for lithium-sulfur batteries. This separator can anchor lithium polysulfides and accelerate the electrochemical reaction of the sulfur electrode, improving the battery's electrochemical performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Shengping Wang, Peimeng Qiu, Zhihuan Xue, Chenyang Zhang, Yi Li, Yu Dai, Jingxian Yu
Summary: Organic electrode materials have gained attention in the research of energy storage due to their renewable and environmentally friendly features. This study explores the lithium storage behavior of riboflavin in lithium-ion batteries, inspired by the energy transduction mechanism of flavin adenine dinucleotide. The study uses computational calculations and experimental evaluations to clarify the redox reaction mechanism and validate the rationality of the proposed mechanism.
JOURNAL OF CHEMICAL EDUCATION
(2022)
Article
Chemistry, Multidisciplinary
Nan Wang, Yong An, Shengping Wang
Summary: A PEO-based SPE modified by TPPi exhibits excellent electrochemical performance and has a wide electrochemical window. The O and P with lone pairs of electrons in TPPi can easily chelate with the empty orbitals of Ni in LiNi0.8Co0.1Mn0.1O2, inhibiting Ni/Li cationic disordering and weakening the oxidation of PEO-based electrolytes by Ni4+.
CHEMICAL COMMUNICATIONS
(2023)
Article
Electrochemistry
Zhihuan Xue, Yu Zhan, Shengping Wang, Jingxian Yu
Summary: The study investigates the relationship between solvothermal temperature of polyimide (PQI) and its surface morphology, structure, and electrochemical properties. The research reveals that PQI as an electrode material exhibits improved solubility, surface structure, and electrical conductivity. The rich pore structure of PQI facilitates ion migration and reduces diffusion impedance, while its uniform three-dimensional mesh structure enhances contact with the conductive agent.
Article
Electrochemistry
Zhen Wang, Zhihong Cai, Xue Han, Hao Zhang, Zhen Shao, Kai Xiao, Youping Fan, Shengping Wang
Summary: The laws for Al corrosion in acetic acid solutions with sodium alginate and Na2CrO4 as corrosion inhibitors were studied. The corrosion protection mechanisms by the inhibitors were explored through electrochemical determinations. The results showed that both (C6H7NaO6)x and Na2CrO4 inhibited Al corrosion, but (C6H7NaO6)x was more effective as a diffusion inhibitor due to its hydrophobic properties.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Guoqing Zhang, Luluan Feng, Jingxian Yu, Shengping Wang
Summary: The introduction of high-efficiency catalysts can overcome the slow kinetics issue in Li-S batteries, improving the rates and cycling lives of the batteries. The Co0.4Ni1.6P-V/CNT catalyst plays a crucial role in regulating catalytic activity and increasing electron density, leading to improved utilization of sulfur and better battery performance.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Zhen Wang, Kai Xiao, Guoqing Zhang, Xue Han, Zhihong Cai, Zhen Shao, Youping Fan, Shengping Wang
Summary: Chemical adsorption was observed between aluminium and organic corrosion inhibitors, and the lone pairs of electrons on the N, O, and S functional groups in the organic compounds were found to mediate bond formation and film formation on aluminium. The corrosion inhibition rates of films formed by aniline, thiourea, and n-butanol were 46.62%, 64.88%, and 49.52% respectively. Functional groups containing N, O, and S with lone pair electrons chemically bond with aluminium to inhibit corrosion.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Zhen Wang, Kai Xiao, Guoqing Zhang, Xue Han, Zhihong Cai, Zhen Shao, Youping Fan, Shengping Wang
Summary: The study found that chemical adsorption occurs between aluminum and organic corrosion inhibitors, and the lone pairs of electrons from N, O, and S functional groups mediate the formation of bonds to create films on aluminum. The corrosion inhibition rates of the films formed by aniline, thiourea, and n-butanol organics were found to be 46.62%, 64.88%, and 49.52%, respectively. This suggests that functional groups of organic inhibitors containing N, O, S with lone-pair electrons chemically bond with aluminum to inhibit corrosion.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Peimeng Qiu, Yi Li, Hongquan Wang, Daoyu Li, Shengping Wang, Jingxian Yu
Summary: Grafting organic molecules onto an insoluble matrix improves the electronic conductivity and insolubility of organic electrode materials. The active group of C=N in DAP@C composites synthesized by chemical grafting of 2,3-diaminophenazine (DAP) with carbon felt through amide bonds (-CO-NH-) shows excellent electrochemical behavior.
CHEMICAL COMMUNICATIONS
(2022)
Review
Chemistry, Physical
Changgang Li, Shengping Wang
Summary: This paper summarizes the research progress of organic potassium-ion batteries (KIBs), including the composition, structure, reaction mechanisms, and electrochemical performances of organic materials. The advantages of organic electrode materials, such as structural diversity and adjustability, are highlighted, while steric hindrance effect caused by the large radius of K+ is often overlooked.
Review
Chemistry, Multidisciplinary
Huixi Li, Xue Han, Wen Zhao, Alowasheeir Azhar, Seunghwan Jeong, Deugyoung Jeong, Jongbeom Na, Shengping Wang, Jingxian Yu, Yusuke Yamauchi
Summary: This review provides a comprehensive overview of the electrochemical synthesis of nano/microstructure transition metal-based OER materials. It introduces the fundamentals and strategies of electrochemical synthesis, summarizes the morphology and properties of electrochemically synthetic materials, reviews the latest progress in transition metal-based OER electrocatalysts, and discusses the oxygen evolution mechanism. It also presents the advantages, challenges, and opportunities of using electrochemical techniques in the synthesis of transition metal-based OER electrocatalysts, aiming to inspire researchers and promote the development of water splitting technology.
MATERIALS HORIZONS
(2022)
Article
Materials Science, Multidisciplinary
Xue Han, Min Wang, Jingxian Yu, Shengping Wang
Summary: By controlling the optimized potential range of TiS2, maintaining structural stability during discharge and charge, can improve its electrochemical performance.
MATERIALS ADVANCES
(2022)
