Article
Chemistry, Multidisciplinary
Yuefeng Su, Gang Chen, Lai Chen, Qi Shi, Zhao Lv, Yun Lu, Liying Bao, Ning Li, Shi Chen, Feng Wu
Summary: The limited cycling stability of Ni-rich materials has hindered their commercial application as one of the most promising cathode materials for Li-ion batteries. By modifying a Ni-rich LiNi0.9Co0.06Mn0.04O2 layered cathode with different amounts of LiTaO3, a uniformly epitaxial coating layer was formed, and Ta5+ doping was observed in the lattice structure. This study demonstrated that the synergistic effects of LiTaO3-coating and Ta5+-doping improved capacity retentions of the modified materials, particularly for 0.25 and 0.5 wt% coated Ni-rich materials, showing potential for LiTaO3 modification in battery applications.
Review
Chemistry, Multidisciplinary
Caijian Liao, Fangkun Li, Jun Liu
Summary: Ni-rich cathode materials face challenges of surface degradation, cation mixing, and microcracks under high voltage. Modification strategies such as element doping, surface coating, single-crystal fabrication, structural design, and multifunctional electrolyte additives have been proposed to address these challenges.
Article
Multidisciplinary Sciences
Dong Hou, Jiaxiu Han, Chenxi Geng, Zhengrui Xu, Modhi M. AlMarzooqi, Jin Zhang, Zhijie Yang, Jungki Min, Xianghui Xiao, Olaf Borkiewicz, Kamila Wiaderek, Yijin Liu, Kejie Zhao, Feng Lin
Summary: Ni-rich layered oxides as high-capacity battery cathodes degrade at high voltages. This study utilizes a dry surface modification method, mechanofusion, to enhance battery stability. The underlying mechanisms responsible for performance improvement are revealed through a systematic study combining multiple probes.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Chemistry, Multidisciplinary
Wei Huang, Wenjin Li, Lve Wang, He Zhu, Min Gao, Huan Zhao, Jinling Zhao, Xueling Shen, Xiaodan Wang, Ze Wang, Chuanlei Qi, Wei Xiao, Lei Yao, Jiantao Wang, Weidong Zhuang, Xueliang Sun
Summary: Ni-rich layered oxides show promise as cathode materials for high-energy-density lithium-ion batteries, but their widespread application is hindered by capacity fading and safety concerns. Introducing high-valence Ta5+ ions in Ni-rich cathodes improves electrochemical performance and thermal stability, leading to enhanced cyclic stability and prevention of surface Ni reduction. This study emphasizes the importance of an integrated optimization strategy for Ni-rich cathodes and provides insights into the mechanisms of high-valence ion substitution in layered cathodes.
Article
Engineering, Environmental
Guangchang Yang, Kai Pan, Zhixiong Yan, Shenglong Yang, Fan Peng, Jingyao Liang, Feiyan Lai, Hongqiang Wang, Xiaohui Zhang, Qingyu Li
Summary: Surface coating is an effective strategy to improve cycling stability of lithium-ion battery electrodes. In this study, a complete coating layer of Mg3B2O6 was prepared on the surface of NCM811 cathode material using a non-traditional route. The coating layer protected the surface crystal structure of the electrode and enhanced the battery's rate capability and cycling performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Xiang Zhang, Guorong Hu, Ke Du, Zhongdong Peng, Weigang Wang, Chaopu Tan, Yongzhi Wang, Yanbing Cao
Summary: This paper introduces the synergistic modification of Ce doping and CeO2 coating to enhance the electrochemical performance of LiNi0.9Co0.05Mn0.05O2 cathode material. Ce doping improves the inner structure stability and lithium ion diffusion pathway, while CeO2 coating protects the cathode/electrolyte interface and enhances cycling performance.
Article
Engineering, Environmental
Guangchang Yang, Kai Pan, Feiyan Lai, Zhongmin Wang, Youqi Chu, Shenglong Yang, Jinlu Han, Hongqiang Wang, Xiaohui Zhang, Qingyu Li
Summary: Ni-rich layered metal oxide of LiNi0.6Co0.2Mn0.2O2 (NCM) is a promising cathode material for next-generation lithium-ion batteries, however, its large-scale commercial applications are hindered by capacity fading and side reactions. Through a combined modification strategy of coating and doping, the overall structure stability is strengthened, resulting in an excellent cycling performance and superior rate capability.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Chemistry, Physical
Zahra Ahaliabadeh, Xiangze Kong, Ekaterina Fedorovskaya, Tanja Kallio
Summary: This review summarizes the common synthesis techniques for nickel-rich positive electrode materials and outlines recent studies on degradation and mitigation mechanisms of these electrodes. It also summarizes different studies on doping and surface modifications of nickel-rich materials. The focus is on evaluating the effects of these methods on enhancing the performance of nickel-rich electrode materials.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Wei Liu, Xu Cheng, Chao Wang, Bingbing Zhao, Bingxin Huang
Summary: In this study, Ti doping and coating were used to modify the Ni-rich LiNi0.94Co0.04Al0.02O2 (NCA) cathode material for enhanced cycle stability and capacity retention. The results showed that the capacity of the modified cathode material only dropped by 20% after 200 cycles, compared to the rapid decay of capacity in the unmodified cathode material under the same cycling conditions.
Article
Chemistry, Physical
Jing Feng, Gang Lang, Tingting Li, Jing Zhang, Jun Zhao, Wei Li, Weiqing Yang, Zhenju Jiang
Summary: This study successfully coated Ni(II)-tannic acid complexes on lab-made C-Cr2O3 nanoparticles using coordination-driven self-assembly strategy, which significantly improved the electrochemical detection responses for glucose and hydrazine, demonstrating superior sensitivity and low detection limits.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Chemical
Meng Zhang, Min Zhu, Weilong Dai, Congcong Yao, Xinqi Zhu, Zhigang Chen, Chengbao Liu, Feng Chen
Summary: The study focused on enhancing the electrochemical properties and safety performance of Ni-rich cathode materials for lithium-ion batteries by coating Li3BO3 on the surface. The suitable amount of Li3BO3 coating was found to improve the rate capability, discharge ability, and cycling performance of the cathode material. Additionally, the coated cathode demonstrated enhanced safety properties and storage performance in pouch batteries.
Article
Chemistry, Physical
Satish Kumar Mylavarapu, Fulya Ulu Okudur, Saeed Yari, Dries De Sloovere, Jan D'Haen, Ahmed Shafique, Marlies K. Van Bael, Mohammadhosein Safari, An Hardy
Summary: In this study, a cost-effective chemical solution deposition route of a thin TiOx shell on LiNi0.6Mn0.2Co0.2O2 (NMC-622) particles was demonstrated to improve the electrochemical performance. Surface modification with TiOx was found to enhance rate performance and reduce charge-transfer resistance, showcasing the beneficial impact on the electrochemical performance of NMC-622 positive electrodes in lithium-ion battery applications.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Sunwook Kim, Sungmin Na, Joonchul Kim, Tae Hwan Jun, Myoung Hwan Oh, Kyoungmin Min, Kwangjin Park
Summary: This study focuses on finding a coating material to replace cobalt in order to address the issues of Ni-rich cathode materials. The Ni/Hf coated sample shows higher initial capacity, improved rate capability, higher Li-ion diffusion coefficient, reduced charge-transfer resistance, enhanced cycle retention, and the ability to suppress side reactions and large volume change compared to other coatings and the pristine sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Rasu Muruganantham, Tzu-Hsin Tseng, Meng-Lun Lee, Soorathep Kheawhom, Wei-Ren Liu
Summary: This study proposes a method of plasma-modified TiN to improve the electrochemical performance and stabilize the cathode-electrolyte interface reaction of Ni-rich LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode material. The physicochemical properties, Li storage performance, and factors for improving the electrochemical performance were systematically investigated. The NCM811-TiN/graphite pouch cell showed high reversible capacity and cycle stability without changing the bulk structure and morphology, facilitating the practical use of safe and high-energy-density Li-ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Shuwei Li, Zepeng Liu, Lu Yang, Xi Shen, Qiuyan Liu, Zhiwei Hu, Qingyu Kong, Jun Ma, Jiedong Li, Hong-Ji Lin, Chien-Te Chen, Xuefeng Wang, Richeng Yu, Zhaoxiang Wang, Liquan Chen
Summary: This study comprehensively investigated the oxygen redox reaction and structural reversibility of the Ni-rich layered oxide during deep delithiation. It was found that the redox reaction is caused by cation mixing upon delithiation, and the migration of transition metals leads to the formation of the I41 structure. These findings provide insights into the origin of the oxygen redox and its impact on structural transformations.
Article
Chemistry, Multidisciplinary
Liqin Dai, Ning Li, Lai Chen, Yuefeng Su, Cheng-Meng Chen, Fangyuan Su, Liying Bao, Shi Chen, Feng Wu
Summary: A new high-performance cathode material with spinel-coated layered heterostructured design has been successfully synthesized, demonstrating outstanding performance in charge-discharge cycles.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Yuefeng Su, Jiayu Zhao, Lai Chen, Ning Li, Yun Lu, Jinyang Dong, Youyou Fang, Shi Chen, Feng Wu
Summary: High-energy and safe lithium ion batteries (LIBs) are increasingly in demand due to the rapid development of electronic devices, electric vehicles, and energy storage stations. Li-rich oxides have shown promise as cathode materials for LIBs, but they face challenges related to the vulnerable cathode/electrolyte interface, such as surface degradation and gas release at high states of charge. Research on interfacial degradation mechanisms and optimization strategies is crucial for Li-rich cathodes, with efforts focused on addressing issues like cycle stability and voltage decay.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Daozhong Hu, Qiyu Zhang, Jun Tian, Lai Chen, Ning Li, Yuefeng Su, Liying Bao, Yun Lu, Duanyun Cao, Kang Yan, Shi Chen, Feng Wu
Summary: This study found that electrolyte decomposition is the main issue affecting the performance of Ni-rich cathode batteries under high-temperature storage, with state of charge having a greater impact. Specifically, the decomposition of solute and solvent leads to the formation of hydrofluoric acid and regeneration of solid-electrolyte interphase films.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Yuefeng Su, Gang Chen, Lai Chen, Qi Shi, Zhao Lv, Yun Lu, Liying Bao, Ning Li, Shi Chen, Feng Wu
Summary: The limited cycling stability of Ni-rich materials has hindered their commercial application as one of the most promising cathode materials for Li-ion batteries. By modifying a Ni-rich LiNi0.9Co0.06Mn0.04O2 layered cathode with different amounts of LiTaO3, a uniformly epitaxial coating layer was formed, and Ta5+ doping was observed in the lattice structure. This study demonstrated that the synergistic effects of LiTaO3-coating and Ta5+-doping improved capacity retentions of the modified materials, particularly for 0.25 and 0.5 wt% coated Ni-rich materials, showing potential for LiTaO3 modification in battery applications.
Review
Chemistry, Applied
Yuefeng Su, Qiyu Zhang, Lai Chen, Liying Bao, Yun Lu, Shi Chen, Feng Wu
Summary: This review article explores the origin, impacts, and strategies to mitigate stress accumulation in Ni-rich layered NCM materials. The formation of microcracks can affect electrolyte permeation and decomposition, ultimately reducing cyclic stabilities.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Physical
Yuefeng Su, Linwei Li, Lai Chen, Lian Wang, Yun Lu, Qiyu Zhang, Liying Bao, Feng Wu
Summary: A facile single-step method to prepare an in situ-formed LiBO2/B2O3 hybrid coating layer on the surface of LiNi0.8Co0.1Mn0.1O2 is reported. The hybrid coating layer can remove surface Li residues, promote Li-ion transport, and isolate the cathode material and electrolyte, resulting in improved cycling stability and rate capability of the Ni-rich cathode material.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Yuefeng Su, Meng Wang, Mengxia Zhang, Lin Chen, Ning Li, Lai Chen, Yunbo Chen, Jiyun Liu, Yaling Li
Summary: In this study, submicron-sized single crystal particles were prepared to enhance the structural stability and lithium ion migration rate of Li-rich cathode materials. Due to the single crystal morphology, the particles remained intact without cracks after cycling, reducing side reactions and preventing structural phase transformation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Applied
Liying Bao, Lei Wei, Nuoting Fu, Jinyang Dong, Lai Chen, Yuefeng Su, Ning Li, Yun Lu, Yongjian Li, Shi Chen, Feng Wu
Summary: Introducing pre-generated oxygen vacancies and oxygen-deficient phase to Li1.2Mn0.6Ni0.2O2 (LMNO) using a facile urea-assisted mixed gas treatment (UMGT) method significantly improves the discharge capacity, capacity retention, and rate capability, while effectively suppressing voltage decay.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Energy & Fuels
Yan Ran, Yuefeng Su, Lai Chen, Kang Yan, Chenxing Yang, Yong Zhao
Summary: This study developed a novel cooling plate with low flow resistance and compared its performance with previous cooling plates. Prediction models were established to investigate the influence of structural parameters and boundary conditions, and experiments were conducted to verify the accuracy of the models. The results demonstrated the performance advantages and excellent prediction abilities of the novel cooling plate, which exhibited better heat dissipation and maintained the temperature of the battery module within a safe range.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Engineering, Environmental
Na Liu, Lai Chen, Haoyu Wang, Jiayu Zhao, Fei Gao, Jing Liu, Jinyang Dong, Yun Lu, Ning Li, Qi Shi, Yuefeng Su, Feng Wu
Summary: By tuning the phase behavior and doping a small amount of Nb, a high-safety and crack-free Ni-rich cathode was achieved. The introduction of Nb resulted in an artificial surface cation mixing layer with high Ni migration barrier and stabilized oxygen framework. The addition of Nb effectively eliminated irreversible phase transformation propagation and transformed the two-phase reaction during the H2-H3 phase transition process to a quasi-monophase reaction, leading to excellent capacity retention, a high onset exothermic temperature at high state of charge, and no visible microcracks after cycling in the Nb-doped LiNi0.9Co0.1O2 cathode.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Feng Wu, Qi Shi, Lai Chen, Jinyang Dong, Jiayu Zhao, Haoyu Wang, Fei Gao, Jing Liu, Hongyun Zhang, Ning Li, Yun Lu, Yuefeng Su
Summary: Researchers propose an economic powder dry coating strategy assisted by a high-energy mixer for the cathode material LiNi0.8Co0.1Mn0.1O2 in lithium ion batteries. By elucidating the specific mechanism nuances between samples under different coating amounts, they reveal the distinct chemical evolution on the cathode surface, leading to significant improvements in cycling stability, rate capability, ambient storage stability, and thermal stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Chongteng Wu, Tong Liu, Xiayu Ran, Yuefeng Su, Yun Lu, Ning Li, Lai Chen, Zhenwei Wu, Feng Wu, Duanyun Cao
Summary: This article introduces a method using machine learning potentials (MLPs) to describe the behavior of Al clusters on surfaces. By utilizing accurate data from density functional theory (DFT) calculations, the MLP accurately predicts the adsorption and diffusion properties of Al clusters, as well as other basic properties of Al bulk and surfaces.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Nanoscience & Nanotechnology
Lifeng Xu, Shi Chen, Yuefeng Su, Xing Shen, Jizhuang He, Maxim Avdeev, Wang Hay Kan, Bin Zhang, Weifeng Fan, Lai Chen, Duanyun Cao, Yun Lu, Lian Wang, Meng Wang, Liying Bao, Liang Zhang, Ning Li, Feng Wu
Summary: In this study, a new ternary Li-rich cathode material Li1+x[RuMnNi](1-x)O-2 was developed by partially replacing expensive Ru5+ ions with low-cost 3d Mn4+ ions. The as-designed cathode exhibited ultrahigh lithium-ion reversibility and underwent extremely low-strain structural evolution during the charge-discharge process, showing great potential for application in high-energy Li-ion batteries.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Huang Qing, Ding Rui, Chen Lai, Lu Yun, Shi Qi, Zhang Qiyu, Nie Qijun, Su Yuefeng, Wu Feng
Summary: In this study, the Ni-rich LiNi0.83Co0.11Mn0.06O2 material was modified using Na2PO3F, resulting in a F-doped and LiF-coated material. The modified material showed improved cycling stability and rate capability, attributed to the LiF coating layer acting as a physical barrier against corrosion and the synergistic effect of F-doping on lithium ion diffusion.
ACTA CHIMICA SINICA
(2022)
Article
Chemistry, Physical
Feng Wu, Qing Li, Lai Chen, Zirun Wang, Gang Chen, Liying Bao, Yun Lu, Shi Chen, Yuefeng Su
Summary: This study investigates the possibility of replacing Co with abundant and cheap transition metals in Ni-rich cathode materials, and identifies Zr4+ as the best candidate. By controlling co-precipitation pH and lithium source, Zr-doped cobalt-free Ni-rich cathode materials were successfully synthesized, demonstrating good electrochemical performance.
ACTA PHYSICO-CHIMICA SINICA
(2022)
