Article
Energy & Fuels
Lijun Chang, Wanyu Chen, Zhengyu Mao, Xingyuan Huang, Tong Ren, Yan Zhang, Zhihua Cai
Summary: In this study, the temperature change and distribution of large capacity and large size square lithium-ion power batteries under different experimental conditions were studied by changing the discharge rate and the ambient temperature. The results showed that the battery temperature change could be divided into three phases. With the increase of discharge rate and the decrease of ambient temperature, both the cell temperature rise and temperature difference would become larger. Additionally, a large temperature difference could easily be generated in the longitudinal axis direction of the lithium-ion battery during discharge, while the temperature difference in the lateral axis direction was only significant in lower ambient temperatures.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Analytical
Han He, Yue Wang, Meng Li, Jingyi Qiu, Yuehua Wen, Junhong Chen
Summary: This study investigated the effect of adding fluoroethylene carbonate (FEC) on LCO/Li cells in lithium-ion batteries. The results showed that FEC addition can form a thin and stable cathode-electrolyte interface film, reducing polarization and increasing discharge capacity. This is attributed to the formation of LiF component from FEC electrochemistry, which has low interfacial resistance and improved ionic conductivity.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Shuang Wan, Keming Song, Jiacheng Chen, Shunshun Zhao, Weiting Ma, Weihua Chen, Shimou Chen
Summary: Constructing an inorganic-rich and robust solid electrolyte interphase is a crucial approach to improving the electrochemical performance of sodium metal batteries (SMBs). This study introduces LiTFSI to create a unique SEI with evenly scattered high-conductivity inorganics, facilitating rapid sodium deposition.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Wenyang Zhao, Zixin Guo, Zhichao Ma, Shenghui Wang, Siguo Yang, Jiong Liu, Hongwei Zhao, Luquan Ren
Summary: This study investigates the mechanical properties of two commercial polyolefin separators (Celgard 2325 and Celgard PE) under low-temperature and immersion conditions. The results show that the performance of the separators is influenced by temperature and electrolyte immersion. Additionally, the analysis of crystallinity and molecular structure reveals the effect of low temperature.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Jiahao Liu, Xia Wang
Summary: Pulse charging is a technique that uses a periodically changing current to charge a battery, reducing charging time and improving performance. This study explores how pulse charging improves charging time and battery performance at low temperatures through experimental tests and numerical simulations. Results show that pulse charging can reduce charging time by 11% at -8.5 degrees Celsius compared to traditional constant current and constant voltage charging methods.
JOURNAL OF POWER SOURCES
(2023)
Article
Green & Sustainable Science & Technology
Tianfeng Gao, Jinlong Bai, Dongxu Ouyang, Zhirong Wang, Wei Bai, Ning Mao, Yu Zhu
Summary: Aging and thermal runaway are major challenges for widespread adoption of lithium-ion batteries. Aging at different temperatures leads to differences in aging mechanisms and thermal runaway behavior of the batteries. This study investigates the changes in electrical performance and thermal stability of commercial lithium-ion batteries aged at temperatures of 25°C, 40°C, 60°C, and 80°C for 100 cycles, analyzing the morphology and composition of the electrodes and separators. The decomposition products of the solid electrolyte intermediate layer are found to play a crucial role in inducing changes in thermal runaway behavior.
Article
Chemistry, Physical
Yu Tian, Cheng Lin, Xiang Chen, Xiao Yu, Rui Xiong, Qiang Zhang
Summary: By releasing the elastic and reversible lithium plating interval, superior charging performance and reduced charging duration at low temperatures can be achieved. The plating-weak fast charging (PWFC) strategy effectively avoids rapid degradation by regulating high reversibility and fine-tuning the charging current that triggers the lithium plating. PWFC guarantees the life of electric vehicles beyond the warranty period and further shortens the charging time in winter.
ENERGY STORAGE MATERIALS
(2023)
Article
Automation & Control Systems
Xinrong Huang, Wenjie Liu, Anirudh Budnar Acharya, Jinhao Meng, Remus Teodorescu, Daniel-Ioan Stroe
Summary: This article systematically investigates the effect of various pulsed current charging modes on battery performance and analyzes the impact of frequency on the quality of current mode. It provides guidance for developing pulsed current charging strategies to meet future charging requirements.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Chemistry, Analytical
Yangyang Wu, Xinlin Long, Junyong Lu, Yiting Wu, Ren Zhou, Lang Liu
Summary: This study investigates the influence of charging temperature on battery aging by conducting experiments on LiFePO4 batteries customized for electromagnetic emission at different charging temperatures. The results indicate that increasing the charging temperature can delay battery aging and extend battery cycle life. Furthermore, the aging mechanism of the battery varies with different charging temperatures.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Mechanical
Fuhao Mo, Ye Tian, Siqi Zhao, Zhi Xiao, Zhiling Ma
Summary: The purpose of this study is to investigate the effects of working temperature on the mechanical properties and short circuit of cylindrical lithium-ion cells. The experimental results reveal a negative correlation between working temperature and the onset of short circuit in compression loading, but non-significant effects on mechanical properties in three-point bending. The discharging rate has no significant effects on the mechanical properties and short circuits of battery cells. In conclusion, the influence of working temperature should not be neglected in the failure of cylindrical lithium-ion batteries.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Energy & Fuels
Luyao Zhao, Minxue Zheng, Junming Zhang, Hong Liu, Wei Li, Mingyi Chen
Summary: Thermal runaway, caused by lithium plating in low-temperature cycling LIBs, is a significant hazard that hinders the application of LIBs in electric vehicles and energy storage systems. This study developed a thermal runaway model that includes the exothermic reaction between metal lithium and electrolyte to account for the aging effect. Validation tests confirmed the effectiveness of the model. The results revealed a three-stage process for thermal runaway and demonstrated that the reaction between plated lithium and electrolyte at around 140 degrees C accelerates the onset of thermal runaway.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Ikramul Hasan Sohel, Tarik Ozturk, Umut Aydemir, Naeimeh Sadat Peighambardoust, Ozgur Duygulu, Isil Isik-Gulsac, Mustafa Altun, Mehmet Nurullah Ates
Summary: This study presents a simple method to enhance the stability of electroplated Silicon (Si) electrodes through heat treatment. The cycling stability of the Si anode improves significantly with increasing heat treatment temperature. The Si electrode heat treated at 400 degrees C maintains 77% capacity even after exposure to air for one week.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Yifei Yu, Timothy Vincent, Jonathan Sansom, David Greenwood, James Marco
Summary: This paper presents a study on the real-time monitoring of the thermal characteristics of a lithium-ion battery. The results show the complex and varied temperature distribution within the battery, with peak temperatures reaching as high as 9.7℃. The study provides insights into battery thermal management and system safety improvement, which are relevant to various applications of lithium-ion batteries, such as automotive and aerospace.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Teng Liu, Shanhai Ge, Xiao-Guang Yang, Chao-Yang Wang
Summary: This study suggests that allowing Li-ion batteries to charge at higher temperatures can alleviate the issues of increased cost and weight caused by strong cooling systems during fast charging. By using an experimentally validated model, it is shown that a gradually increasing temperature profile can achieve a balance between fast charging and thermal management of the battery.
JOURNAL OF POWER SOURCES
(2021)
Review
Energy & Fuels
Jiani Wang, Hailong Wang, Songyan Jia, Qin Zhao, Qiang Zheng, Yali Ma, Tianyi Ma, Xue Li
Summary: Lithium-sulfur (Li-S) batteries have a higher theoretical capacity and several advantages compared to lithium-ion batteries. However, issues like the shuttle effect of polysulfide and degradation of cycle stability hinder their practical application. Functionalized membranes offer a key approach to address these challenges. Recent research has focused on mitigating the shuttling effect and improving cycle stability through membrane functionalization. This paper provides a comprehensive review of recent progresses and predicts future research trends in this area.
JOURNAL OF ENERGY STORAGE
(2023)
