Article
Materials Science, Multidisciplinary
Biaobing Chen, Min Liu, Shuang Cao, Gairong Chen, Xiaowei Guo, Xianyou Wang
Summary: This paper presents a new method for recovering FePO4 and Li2CO3 from spent LiFePO4 cathode materials to address the shortage of lithium resources. It was found that a sample with 12% carbon content in the LiFePO4 composite demonstrated better electrochemical performance.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Chemical
Xiaopeng Li, Yan Meng, Xiaojuan Chen, Yujue Wang, Dan Xiao
Summary: This study successfully synthesized high-performance nano-LiFePO4/C material using a continuous ozone-oxidation strategy. The obtained material has smaller and more uniform particle size, larger surface area, and better electrochemical performance, making it suitable for lithium-ion batteries.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Lingyan He, Kaiyuan Shi, Yu Pan, Jinghua Wu, Xing Li, Xing Xin
Summary: This article proposes a dual-functional carbon nanofibrous skeleton decorated with Co nanoparticles and Co-N-x sites to improve the electrochemical behavior of both anode and cathode in Li-O-2 batteries. The synergistic effect of Co nanoparticles and Co-N-x sites improves the lithiophilicity of carbon fibers, reduces polarization, and moderates dendritic formation at the Li metal anode. Moreover, the Co nanoparticles and Co-N-x sites act as active sites to promote the ORR and OER processes at the cathodic side, leading to improved battery performance.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Energy & Fuels
Yadong Wang, Wenhua Cheng, Wei Wang, Yudai Huang
Summary: Dual-site doping of Cu2+ in single-crystal LiNi(0.5)Co(0.2)Mn(0.3)O(2) improves the high voltage stability and rate performance of the material, with a capacity retention rate of 82.2% after 200 cycles. This work provides a guideline for stabilizing the ontological structure of single-crystal cathode materials.
Article
Engineering, Chemical
Wenhua Xu, Dongfu Liu, Xuheng Liu, Dezhi Wang, Lihua He, Zhongwei Zhao
Summary: This study constructs a novel electrochemical deintercalation/intercalation system (EDIs) for lithium extraction from brine. The system modifies the electrode hydrophilicity and mass transfer efficiency by introducing hydroxyl-rich PEG and using porogenic and structural reinforcing agents. Experimental results show that the modified electrode exhibits significantly increased lithium extraction speed and current efficiency.
Article
Chemistry, Analytical
Takahiko Yamamoto, Tomohiro Ando, Yusuke Kawabe, Takeshi Fukuma, Hiroshi Enomoto, Yoshiaki Nishijima, Yoshihiko Matsui, Kiyoshi Kanamura, Yasufumi Takahashi
Summary: The research focuses on the impact of depth of discharge (DOD) on the charge/discharge performance of lithium-ion secondary batteries, using scanning electrochemical cell microscopy (SECCM) to detect the charge transfer resistance at the solid-liquid interface.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Ke Yang, Chan Li, Haoyuan Qi, Yunfei Dai, Yuhong Cui, Yibo He
Summary: The construction of g-C3N4@MQDs functional layer on Celgard separator by electrostatic adsorption was an effective solution to mitigate the shuttle effect of polysulfides in Li-S batteries. The MQDs not only provided more active sites to capture dissolved polysulfides, but also acted as an electrocatalyst to facilitate the Li2S catalytic conversion, resulting in high capacity and excellent performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Wenyu Wang, Rui Wang, Renming Zhan, Junmou Du, Zihe Chen, Ruikang Feng, Yuchen Tan, Yang Hu, Yangtao Ou, Yifei Yuan, Cheng Li, Yinguo Xiao, Yongming Sun
Summary: The recycling of LiFePO4 from degraded LIBs from EVs has gained significant attention due to resource, environment, and cost considerations. The study revealed continuous lithium loss during battery cycling, resulting in a Li-deficient state and phase separation within individual particles. By chemical compensation for the lithium loss, the LiFePO4 structure was successfully restored to pure LiFePO4, eliminating nanograin boundaries.
Article
Chemistry, Physical
Yin Li, Li Wang, Feng Liang, Yaochun Yao, Keyu Zhang
Summary: This study successfully improved the electronic conductivity and lithium ion mobility of LiFePO4 through boron doping at the P-site, enhancing its electrochemical performance. The LiFeP0.98B0.02O4-delta/C exhibited the best performance, delivering a first discharge capacity of 138 mAh g(-1) at 2C with no evident capacity fading after 300 cycles. However, excessive doping of boron could lead to oxygen defects in the material, resulting in unfavorable electrochemical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Analytical
Shihan Zeng, Qinxin Xu, Hongjun Jin, Lingxing Zeng, Yiyi Wang, Wenbin Lai, Qi Yao, Jixiang Zhang, Qinghua Chen, Qingrong Qian
Summary: Due to the concern about resource shortage and environmental pollution caused by the widespread use of lithium-ion batteries, the recycling of spent lithium-ion power batteries in electric vehicles becomes urgent. In this study, a one-pot method is reported to recover FePO4 from spent LiFePO4 cathode powder, which is then successfully used as cathode materials for lithium/sodium-ion batteries for the first time. By optimizing the FePO4 with graphene oxide coating, the electrochemical performance can be further improved.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Vahid Ramezankhani, Igor K. Yakuschenko, Sergey Vasilyev, Tatiana A. Savinykh, Alexander Mumyatov, Ivan S. Zhidkov, Elena Shchurik, Ernst Z. Kurmaev, Alexander F. Shestakov, Pavel A. Troshin
Summary: A series of promising polymeric electrode materials were synthesized and investigated for potassium half-cells, showing high discharge capacity and energy density. The best-performing material P1 exhibited exceptional discharge capacity and energy density, making it one of the best electrode materials for potassium-ion batteries reported so far.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Electrochemistry
Rong He, Yongling He, Wenlong Xie, Bin Guo, Shichun Yang
Summary: This paper investigates the aging behavior and mechanism of cylindrical LFP batteries by designing a cross-comparison aging test, which uses three constant current and two different dynamic working conditions for accelerated aging at high temperature. The aging behavior and mechanism are quantitatively studied through in-situ electrochemical test and ex-situ Post-Mortem methods. External characteristic parameters such as capacity, internal resistance, and open circuit voltage are periodically checked during the long-term cycle of the battery. This multiscale analytical method enables a detailed understanding of the performance loss process, guiding performance prediction and safety diagnostics.
ELECTROCHIMICA ACTA
(2023)
Review
Chemistry, Physical
Jing Geng, Shuchao Zhang, Xixi Hu, Wenqin Ling, Xiaoxiao Peng, Shenglin Zhong, Fangan Liang, Zhengguang Zou
Summary: This review introduces the LiFePO4 material and the modification methods of graphene and its derivatives on LiFePO4, discusses the problems that arise, and introduces the corresponding solutions. Finally, the future development of this composite material is discussed.
Article
Engineering, Environmental
Xiangping Chen, Shuzhen Li, Yi Wang, Youzhou Jiang, Xiao Tan, Weijiang Han, Shubin Wang
Summary: This study successfully applied ultrasound-assisted Fenton reaction to selectively remove PVDF binders from spent LIBs, recovering LiFePO4 cathode materials. Experimental results showed that under optimized conditions, about 97% of the cathode materials can be scrubbed from the aluminum foils, and the cleaned materials are free from contamination.
Article
Chemistry, Physical
Yukang Liu, Hao Zhang, Zheng Huang, Qian Wang, Mingyi Guo, Mingqing Zhao, Dingyue Zhang, Jiagui Wang, Ping He, Xiangyang Liu, Mauricio Terrones, Yanqing Wang
Summary: Our study introduces an efficient and practical conducting mode built by ternary conductive networks to enhance the rate performance of LiFePO4 cathodes in lithium-ion batteries. We investigate the influence of electrical conductivity, rate capability, and continuous ion channels on the resulting electrode. By individually dispersing carbon nanotubes (CNTs) with long-range electronic conduction into an electrode slurry, we create more open channels for electron and ion transportation, enhancing the fast electron/ion open channels of the composite.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Electrochemistry
Abdul Qayoom Mugheri, Shaista Khan, Ali Asghar Sangah, Aijaz Ahmed Bhutto, Muhammad Younis Laghari, Nadeem Ahmed Mugheri, Asif Ali Jamali, Arsalan Ahmed Mugheri, Nagji Sodho, Abdul Waheed Mastoi, Aftab Kandhro
Summary: Green hydrogen has the potential to transition to a pollution-free energy infrastructure. This study proposes a solution to produce hydrogen during the photoelectrochemical process, offering greater stability and control over chemical reactions. Techno-economic assessments show the efficiency and economic feasibility of co-producing value-added chemicals to enhance green hydrogen production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Danpeng Cheng, Wuxin Sha, Qigao Han, Shun Tang, Jun Zhong, Jinqiao Du, Jie Tian, Yuan-Cheng Cao
Summary: LiNixCoyMn1-x-yO2 (NCM) is a critical cathode material for lithium-ion batteries in electric vehicles. The aging of cathode/electrolyte interfaces leads to capacity degradation and long-term cycle instability. A novel neural network model called ACGNet is developed to predict electrochemical stability windows of crystals, allowing for high-throughput screening of coating materials. LiPO3 is identified as a promising coating material with high oxidation voltage and low cost, which significantly improves the cycle stability of NCM batteries. This study demonstrates the accuracy and potential of machine learning in battery materials.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
P. Mohana, R. Yuvakkumar, G. Ravi, S. Arunmetha
Summary: This study successfully fabricates a non-noble CuO/NiO/rGO nanocomposite and investigates its electrocatalytic performance for oxygen evolution reaction in alkaline environment. The experimental results demonstrate that the electrocatalyst exhibits high activity and good stability, offering a new synthetic approach for sustainable energy production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Qiong Qu, Jing Guo, Hongyu Wang, Kai Zhang, Jingde Li
Summary: In this study, a bifunctional electrode host design consisting of carbon nanofibers implanted ordered porous Co-decorated Al2O3 supported on carbon nanotube film (CNTF) was proposed to address the shuttling effect of lithium polysulfides (LiPSs) and dendrite formation of metal lithium anode in lithium-sulfur (Li-S) batteries. The electrode exhibited excellent conductivity, efficient confinement of LiPSs, and catalytic conversion performance, resulting in high initial capacity and good capacity retention during cycling. As an anode, the electrode showed excellent Li+ diffusion performance and uniform lithium growth behavior, achieving a dendrite-free lithium electrode. The flexible pack cell assembled from these electrodes delivered a specific capacity of 972 mAh g(-1) with good capacity retention.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Hong Zhang, Jin-Peng Yu, Chen Chen, Cheng-Yong Shu, Guang-Yu Xu, Jie Ren, Kai Cui, Wen-Fang Cai, Yun-Hai Wang, Kun Guo
Summary: Spray coating of acetylene black nanoparticles onto stainless steel mesh can enhance its biofilm formation ability and current density, making it a promising electrode material for microbial electrochemical systems. The spray coating method is simple, cost-effective, and suitable for large-size stainless steel electrodes.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Binpeng Hou, Jingjin Chen, Li-Hong Zhang, Xiaowen Shi, Zizhong Zhu
Summary: The electrochemical performance of Li1.20Mn0.44Ni0.32Co0.04O2 and its oxygen-deficient phase Li1.20Mn0.44Ni0.32Co0.04O1.83 was studied through first-principles calculations. The results show that the oxygen-deficient phase has a higher theoretical capacity but lower voltage platform and higher chemical activity compared to the pristine phase.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Yating Du, Sayoko Shironita, Daisuke Asakura, Eiji Hosono, Yoshitsugu Sone, Yugo Miseki, Eiichi Kobayashi, Minoru Umeda
Summary: This study investigates the effect of high- and low-temperature environments on the charge-discharge performance of a Li-ion battery. The deterioration mechanisms of the battery at different temperatures are analyzed through various characterization techniques. The results indicate that the battery performance deteriorates more significantly at a low-temperature environment of 5 degrees C compared to higher temperatures. The understanding of the deterioration mechanisms can contribute to the development of safer battery usage methods.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Si-Si Shi, Zhi-Xiang Yuan, Fei Zhang, Ping Chen
Summary: In this study, a new nano-electrocatalyst was prepared, which exhibited superior electrocatalytic activity for the reduction of NO2- to ammonia in a neutral electrolyte, potentially due to the synergistic enhancement between Co3O4-x and Co.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Berna Dalkiran, Havva Bekirog
Summary: This study reports the use of deep eutectic solvents (DES) based on ethylene glycol and urea as low-cost and green electrolytes for enhancing electrochemical detection of natural antioxidants. The study successfully developed a disposable and effective electrochemical sensing platform for simultaneous determination of ascorbic acid (AA) and gallic acid (GA) using NaOH nanorods on a pencil graphite electrode. The proposed electrode showed improved analytical performance, with higher peak currents and shifted oxidation potentials in DES compared to BR buffer medium.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Sijun Ren, Jianguo Huang
Summary: In this study, a novel bio-inspired nanofibrous WO3/carbon composite was synthesized using a facile hydrothermal method. The three-dimensional network structure of the composite alleviated the volume expansion of WO3 nanorods and enhanced the charge-transport kinetics. The optimized composite exhibited superior lithium storage properties.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Zhilong Zheng, Yu Chen, Hongxia Yin, Hengbo Xiao, Xiangji Zhou, Zhiwen Li, Ximin Li, Jin Chen, Songliu Yuan, Junjie Guo, Haibin Yu, Zhen Zhang, Lihua Qian
Summary: This study found that interstitial Zn cations in CoMoO4 can modulate the dissolution kinetics of Mo cations and improve the OER performance. The interstitial Zn cations can prevent the dissolution of Co cations at high potential, enhancing the durability of the catalyst.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Xiaobo Lin, Shern R. Tee, Debra J. Searles, Peter T. Cummings
Summary: Molecular dynamics simulations using the constant potential method were used to investigate the charging dynamics and charge storage of supercapacitors. The simulations revealed that the water-in-salt electrolyte exhibited the highest charge storage and significantly higher capacitance on the negative electrode. The varying contributions of different electrode regions to supercapacitor performance were also demonstrated.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Wiktoria Lipinska, Vita Saska, Katarzyna Siuzdak, Jakub Karczewski, Karol Zaleski, Emerson Coy, Anne de Poulpiquet, Ievgen Mazurenko, Elisabeth Lojou
Summary: The spatial distribution of enzymes on electrodes is important for bioelectrocatalysis. In this study, controlled spatial distribution of gold nanoparticles on Ti nanodimples was achieved. The efficiency of enzymatic O2 reduction was found to be influenced by the size of the gold nanoparticles and their colocalization with TiO2. The highest stability of enzymatic current was observed with the largest gold nanoparticles.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Tariq M. Al-Hejri, Zeenat A. Shaikh, Ahmed H. Al-Naggar, Siddheshwar D. Raut, Tabassum Siddiqui, Hamdan M. Danamah, Vijaykumar V. Jadhav, Abdullah M. Al-Enizi, Rajaram S. Mane
Summary: This study explores a promising self-growth approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on the surface of a nickel-foam (NiF) electrode. The modified NiF electrode, named Ni(OH)2@NiF, shows distinctive nanosponge-ball morphology and demonstrates excellent energy storage capability and electrocatalytic performance in both hydrogen and oxygen evolution reactions.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Rafael Del Olmo, Gregorio Guzman-Gonzalez, Oihane Sanz, Maria Forsyth, Nerea Casado
Summary: The use of Lithium-Ion Batteries (LIBs) is becoming increasingly extensive, and it is important to optimize the devices to achieve their maximum practical specific capacity. In this study, mixed ionic-electronic conducting (MIEC) binders based on PEDOT:PSS and PEDOT: PDADMA-TFSI were developed for Li-ion cathodes, and their performance was compared with conventional formulations. The influence of electrode formulations, including the addition of conducting carbon and an Organic Ionic Plastic Cristal (OIPC), was also analyzed. The proposed binders showed improved performance compared to conventional formulations with different electrolyte types and active materials.
ELECTROCHIMICA ACTA
(2024)