Article
Nanoscience & Nanotechnology
Hao Wu, Lihua Zheng, Ning Du, Bowen Sun, Jie Ma, Yingying Jiang, Jiadong Gong, Huan Chen, Lianbang Wang
Summary: The rational design of compact graphite/Si/SiO2 ternary composites enhances packing density and leads to higher areal capacity compared to pure graphite. Introducing Si/SiO2 clusters into void spaces between graphite particles provides an effective strategy for implementing graphite-Si composite anodes in next-generation Li-ion cells.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Electrochemistry
Shengming Zhang, Anastasia A. Teck, Zhenyu Guo, Zhen Xu, Maria-Magdalena Titirici
Summary: In this study, a variety of carbon composite materials were designed to investigate the roles of different carbon structural features in potassium ion insertion. The graphite-soft carbon composites were found to have high charge capacity and good reversibility, due to the presence of soft carbon inhibiting the formation of solid electrolyte interface layer.
BATTERIES & SUPERCAPS
(2021)
Article
Chemistry, Physical
Jannes Mueller, Mozaffar Abdollahifar, Stefan Doose, Peter Michalowski, Nae-Lih Wu, Arno Kwade
Summary: This study scaled up the production process of silicon/graphite composites and investigated the effects of carbon coating and calendering on the particle level. The study found that carbon coating reduces surface area, stabilizes the composite, and enhances electrical conductivity. The electrochemical performance of the composites showed improved capacity retention with carbon coating, especially after calendering.
JOURNAL OF POWER SOURCES
(2022)
Article
Electrochemistry
Giovanna Maresca, Akiko Tsurumaki, Naoki Suzuki, Koji Yoshida, Stefania Panero, Yuichi Aihara, Maria Assunta Navarra
Summary: A simple method of realizing all-solid-state lithium batteries (ASS-LIBs) using a Sn/C composite anode and glassy solid electrolyte LiI-Li3PS4 (LPSI) is proposed in this study. The combination of LPSI electrolyte and Sn/C enables a simple and time-efficient preparation of ASS-LIBs with stable and safe performance, as demonstrated by the retention of high capacity throughout 30 cycles.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Yaodong Ma, Pengqian Guo, Mengting Liu, Pu Cheng, Tianyao Zhang, Jiande Liu, Dequan Liu, Deyan He
Summary: Porous carbon coated silicon nanoparticles were prepared as anode materials for lithium-ion batteries to suppress the volume expansion effect of silicon and improve the infiltration of electrolyte and the diffusion of lithium ions. The mass ratio of the anode materials effectively controlled the specific capacities and reduced production cost.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Heguang Liu, Ruixuan Jing, Zhanglin Zhu, Xintong Lv, Li Lei, Na Tian, Caiyin You
Summary: In this study, a MWCNTs/Co3O4/carbon foam composite was designed and fabricated to address the issues of volume expansion and electrical conductivity in Co3O4 anodes. The results showed that the composite exhibited significantly improved electrochemical performance compared to pristine Co3O4. After 200 cycles, the composite delivered a discharge capacity of 480.4 mAhg � 1 at 0.5 Ag-1, which was much higher than the pristine Co3O4 (53.9 mAhg � 1). Moreover, the composite also demonstrated good rate capability and cycling stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Xuepeng Ni, Zhe Cui, Hongxia Luo, Huifang Chen, Chenglin Liu, Qilin Wu, Anqi Ju
Summary: In this study, three types of flexible 3D-interconnected carbon nanofibers were prepared and used as substrates for vertically grown ultrathin MoSe2 nanosheets. The resulting composites were employed as freestanding anodes for lithium-ion batteries, with the hollow multi-nanochannel structure of NHMCFs delivering the highest capacity after 400 cycles at 1 A g-1. The multi-nanochannel structure in NMCFs and NHMCFs helps alleviate volume changes during charge-discharge processes, while the uniform coating of MoSe2 nanosheets on NHMCFs increases mass loading and capacity.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Yan Cheng, Kun Wei, Zhaozhe Yu, Dianyuan Fan, Dong Liang Yan, Zhiliang Pan, Bingbing Tian
Summary: The study developed a ternary Si-SiO-Al composite film anode with exceptional conductivity, specific capacity, cycling stability, and rate performance, effectively buffering volume expansion and showing superior performance. Additionally, the composite film enhances the anode's electrical conductivity, demonstrating commercial potential.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Electrochemistry
Joseph P. Sullivan, Arijit Bose
Summary: This study investigates the rheology of lithium-ion battery anode slurry and its impact on electrochemical performance. The storage modulus is found to be a key factor influencing the performance.
ELECTROCHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Haichao Yu, Xuan Chen, Jie Zhou, Hui Wang, Shanshan Qiu
Summary: Responsible disposal of scrapped lithium-ion batteries (LIBs) is crucial for addressing global electronic waste issues. This study proposes an eco-friendly one-step technology to convert spent graphite (SG) in LIBs to nitrogen-doped defect-enriched graphite (NG) using an NH4Cl roasting strategy. The recycling technique eliminates the need for leaching by acids or water, making it free of complicated separation processes. Experimental results show that this strategy removes impurities and introduces defects into the graphite matrix, resulting in improved Li+ storage and cycling stability. The NG exhibits superior charge capacity and rate performance compared to SG and commercial natural flake graphite (CG). Overall, this study offers significant progress in the recycling technology of graphite anodes and contributes to the sustainable development of LIBs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Xiuqing Lu, Ping Xu, Weijie Song, Peng Zhou, Mingdong Liao, Guang Zeng, Xiebo Hu, Jianxin Li, Mingyu Zhang, Qizhong Huang, Zhean Su
Summary: A silicon/graphite/reduced graphene oxide (Si/Gt/RGO) composite was prepared, where silicon nanoparticles were embedded in a graphite matrix and wrapped by reduced graphene oxide. The dual carbon (graphite and RGO) protected the silicon nanoparticles and ensured electronic contact, leading to superior electrochemical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yu Xin, Shuqing Nie, Shi Pan, Chang Miao, Haoyi Mou, Minyue Wen, Wei Xiao
Summary: SnSb and TiO2 nanoparticles are successfully embedded into carbon nanofibers through electrospinning and calcination treatments. The presence of TiO2 is crucial for constructing the well-designed fiber structure, and the synergistic effects of SnSb, TiO2, and CNFs contribute to enhanced lithium storage capacity and cycling performance. The composite electrodes show promising potential for practical applications in energy storage.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Electrochemistry
Thi BeTa Truong, Ying-Ru Chen, Guan-Yin Lin, Han -Tu Lin, Yi-Shiuan Wu, Chun-Chen Yang
Summary: In this study, LiPAA-coated Gr/Si/C composite materials were prepared and showed improved capacity retentions during cycling tests. The LiPAA polymer coating stabilized the interface structure between the electrode and the electrolyte during the cycling process.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Shanshan Xiao, Yichuan Zhang, Xianggang Zhou, Xuning Leng, Yingqi Li, Fei Bi, Li Zhao, Liyan Wang, Guangqing Gai, Yangguang Li
Summary: Magnetic transition-metal oxides are promising alternatives to carbonaceous substances as anode materials for lithium ion batteries due to their high theoretical capacity. However, their poor electronic conductivity and severe agglomeration of nanoparticles during discharging adversely affect their electrochemical performance. In this study, a 3D spatially-confining magnetic anode with carbon encapsulated Fe3O4 nanoparticles anchored onto 3D nickel nanotube arrays skeleton is demonstrated. The anode exhibits high-capacity lithium storage and excellent rate/cycle capability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Jiamin Zeng, Ning Fu, Xiaodong Wang, An'an Zhou, Zhenglong Yang
Summary: Low-cost aluminum-silicon alloys were used to obtain porous silicon particles, which were then combined with ultrafine Ag nanoparticles and low-quality graphite to prepare Ag-doped porous silicon/graphite composite. This composite showed improved conductivity and reduced volume expansion, leading to high initial charging capacity and stable reversible specific capacity over multiple cycles.
APPLIED SURFACE SCIENCE
(2021)
