Article
Chemistry, Physical
Daile Zhang, Qiong Chen, Jianghua Zhang, Ting Sun
Summary: The study presents a composite material of MgMn2O4 particles and multi-walled carbon nano-tubes for aqueous magnesium ion batteries, demonstrating high conductivity and good charge-discharge performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Sunny Nandi, Shyamal K. Das
Summary: In this study, we demonstrate the potential of electrochemical Al3+ ion insertion in LiMn2O4 in aqueous electrolytes. The addition of low-valence Mn ions in an AlCl3 aqueous electrolyte enables LiMn2O4 to achieve a discharge capacity of 65 mA h g(-1) at a current rate of 800 mA g(-1) at the 75th cycle.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Mozaffar Abdollahifar, Pierre Lannelongue, Hao-Wen Liu, Hsi Chen, Cheng-Hung Liao, Hwo-Shuenn Sheu, Jyh-Fu Lee, Yen-Fa Liao, Nae-Lih Wu
Summary: An exclusive room-temperature synthesis process has been developed for producing cubic spinel LiMn2O4 (CLMO), a Li-ion battery cathode material with promising high-rate characteristics. The electrochemical ion-exchange process used in the synthesis may offer opportunities for preparing other high-performance electrode materials for Li-ion battery applications.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Physical
Kyle B. Ludwig, Riordan Correll-Brown, Max Freidlin, Mounesha N. Garaga, Sahana Bhattacharyya, Patricia M. Gonzales, Arthur V. Cresce, Steven Greenbaum, Chunsheng Wang, Peter Kofinas
Summary: To meet the increasing demands of Li-ion batteries, solid polymer electrolytes (SPEs) need to improve both transport properties and electrochemical stability. This study investigates a hybrid aqueous/ionic liquid SPE (HAILSPE) that can simultaneously enhance transport and electrochemical stability. The results demonstrate that the composition of HAILSPE can greatly impact its electrochemical performance.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Malaurie Paillot, Alan Wong, Sergey A. Denisov, Patrick Soudan, Philippe Poizot, Benedicte Montigny, Mehran Mostafavi, Magali Gauthier, Sophie Le Caer
Summary: Aqueous solutions, including water-in-salt electrolytes (WISEs), play vital roles in biology and chemistry, particularly in energy fields like catalysis and batteries. However, the commercialization of WISE-based rechargeable batteries still faces challenges due to knowledge gaps in long-term reactivity and stability. To address this, a comprehensive approach using radiolysis to accelerate the study of WISE reactivity is proposed, revealing unique insights into the degradation mechanisms and stability of these electrolytes.
Article
Chemistry, Physical
Divyani Gupta, Alankar Kafle, Sukhjot Kaur, Tharamani C. Nagaiah
Summary: Ammonia production is crucial for addressing hunger issues caused by population growth. Electrochemical ammonia production is considered a promising alternative to traditional methods due to its zero carbon emissions and energy efficiency. However, current research has not achieved practical standards in terms of faradaic efficiency and ammonia yield rate. This perspective summarizes breakthrough works in both aqueous and non-aqueous electrochemical ammonia production and discusses the importance of electrolytes and the interface between electrolyte and electrode. The future prospects and challenges in this field are also proposed.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Rui Zhou, Zhen Hou, Qun Liu, Xiaoqiong Du, Jiaqiang Huang, Biao Zhang
Summary: Calcium-ion batteries have promising potential as multivalent ion battery systems, and selenium has been explored as a reliable electrode material. Selenium demonstrates high energy density and long-term cyclic stability, making it suitable for both non-aqueous and aqueous electrolytes.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Shuilin Wu, Bizhe Su, Mingzi Sun, Shuai Gu, Zhouguang Lu, Kaili Zhang, Denis Y. W. Yu, Bolong Huang, Pengfei Wang, Chun-Sing Lee, Wenjun Zhang
Summary: The electrochemical window of water at low salt concentration can be expanded by using aprotic solvent like trimethyl phosphate (TMP), which enhances the electrolyte's ionic conductivity, reduces density, and widens temperature compatibility. Additionally, Density functional theory calculations confirm that TMP induces significant electronic modulation, leading to the expansion of the voltage window beyond the potential limitation of aqueous electrolytes.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xinxin Liu, Weixiong Xiong, Jiawei Zheng, Jinmei Wu, Bin Huang, Qing Zhu, Yanwei Li, Shunhua Xiao, Quanqi Chen, Jianwen Yang, Zhaoling Yang
Summary: The electrochemical performances and process mechanisms of Zn/LiFePO4 cells in a slightly acidic solution were investigated. The results showed that the reactions on the surface of the zinc sheet and the dissolution of Fe2+ ions affected the specific capacity of the cells.
Article
Engineering, Multidisciplinary
Tayyab Junaid Shehzad, Mudssir Shezad, Muhammad Aamir, Hamid Hussain
Summary: The research work presented focuses on monitoring mercuric ions using an electrochemical sensor developed by immobilizing Threonine on the surface of a glassy carbon electrode. The optimized sensor shows good voltammetric response, sensitivity, anti-interference ability, and remarkable response to detecting water toxins under various conditions. The results hold promise for providing useful guidelines for environmental stakeholders in framing laws for monitoring water pollution.
Article
Multidisciplinary Sciences
Liang Huang, Ge Gao, Chaobo Yang, Xiao-Yan Li, Rui Kai Miao, Yanrong Xue, Ke Xie, Pengfei Ou, Cafer T. T. Yavuz, Yu Han, Gaetano Magnotti, David Sinton, Edward H. H. Sargent, Xu Lu
Summary: Electrochemical CO2 reduction (CO2R) is a method to close the carbon cycle for chemical synthesis. The research has mainly focused on ambient pressure CO2, but industrial CO2 is usually pressurized and in dissolved form. By studying the effects of pressure on CO2R, the researchers found that higher pressure leads to increased formate selectivity. They further enhanced this pressure-mediated effect by functionalizing the surface of a Cu cathode with a proton-resistant layer. This work highlights the potential of using industrial CO2 as a feedstock for sustainable chemical synthesis.
NATURE COMMUNICATIONS
(2023)
Article
Energy & Fuels
Jai Bhagwan, Nagesh Kumar, Yogesh Sharma
Summary: In this work, spinel magnesium manganese oxide (MgMn2O4) with nanofibric morphology was successfully prepared using the electrospinning technique. The nanofibers exhibited high diffusion coefficient and small relaxation time constant, contributing to improved energy storage performance. The quantitative contributions of EDLC and diffusion-controlled redox reactions were determined.
JOURNAL OF ENERGY STORAGE
(2022)
Review
Chemistry, Multidisciplinary
Christopher G. Cannon, Peter A. A. Klusener, Nigel P. Brandon, Anthony R. J. Kucernak
Summary: This paper reviews organic molecules used as the redox-active electrolyte for the positive cell reaction in aqueous redox flow batteries. The key metrics to assess their performance are discussed, and a new figure of merit called the theoretical intrinsic power density is introduced. The theoretical intrinsic power densities of organic electrolytes are much higher than that of the VO2+/VO2+ couple, with TEMPO-derivatives showing the highest performance.
Article
Chemistry, Physical
Jiaqi Zhao, Meng Shi, Yunhao Wu, Pian Zhang, Xinghua Tan, Xiaohong Kang, Weiguo Chu, Zhilian Wu, Yifei Li
Summary: Octahedral LiMn2O4 (O-LMO) with exposed {111} crystal facets prepared via solid phase reactions showed superior rate performance and good cycling stability in both aqueous batteries and organic systems. The excellent performance may be attributed to the stable {111} facets maintaining octahedral structures and surface morphologies, as well as the suppression of Mn dissolution and side reactions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Ahmed El-Ghazaly, Joseph Halim, Bilal Ahmed, Ahmed S. Etman, Johanna Rosen
Summary: This study investigates the electrochemical behavior of vacancy-containing i-MXene (Mo1.33CTz) in sulfate based aqueous electrolytes with different types of cations. It is found that the performance of Mo1.33CTz MXene can be improved by choosing appropriate intercalating cations. The results show that the Mo1.33CTz MXene electrodes can operate at a potential window higher than 1 V without degradation, and exhibit a high volumetric capacitance. The asymmetric and symmetric devices in K2SO4 solution show good cycling stability and retention rate.
JOURNAL OF POWER SOURCES
(2022)
