Article
Engineering, Chemical
Fangfang Zhao, Min Zhao, Yanru Dong, Lei Ma, Yu Zhang, Sulin Niu, Liangming Wei
Summary: The study presents the development of a silicon-graphite-carbon ternary composite using inexpensive micron-sized silicon, showcasing its potential for high rates and good capacity stability, and achieving significant electrochemical performance.
Article
Chemistry, Physical
Qiuyan Li, Ran Yi, Yaobin Xu, Xia Cao, Chongmin Wang, Wu Xu, Ji-Guang Zhang
Summary: This study focuses on the design and failure analysis of a silicon (Si) anode for lithium-ion batteries (LIBs). The volumetric energy density of the Si anode depends heavily on factors such as Si/C loading, anode calendering density, first-cycle coulombic efficiency, and anode capacity density. Stable Si/C electrode structure is crucial for long-term cycling, and the degree of prelithiation needs to be balanced with cycle life.
JOURNAL OF POWER SOURCES
(2022)
Article
Electrochemistry
Lucia dos Santos-Gomez, Nuria Cuesta, Ignacio Camean, S. Garcia-Granda, Ana B. Garcia, Ana Arenillas
Summary: Silicon-carbon composites with a porous structure were prepared and evaluated for their electrochemical behavior. The composite with 30% silicon content exhibited high discharge capacity and excellent long-term stability.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Meng Zhang, Jin Li, Chunwen Sun, Zhenqiu Wang, Yan Li, Dianping Zhang
Summary: In this study, a flexible silicon/carbon composite with dual-layer was prepared by microelectronic printing technology and used as an anode for lithium-ion batteries. The composite material has a slit structure that provides elastic space to buffer volume expansion during lithiation/delithiation, and an amorphous carbon protective shell improves the structural stability and electrochemical performance. The experimental results show that the flexible anode exhibits high reversible capacity and good cyclic stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Xiao Bai, Hui Zhang, Junpin Lin
Summary: This study explores the use of conducting polymers as both a conductive agent and binder in silicon anodes. By utilizing polyaniline (PANI) as a three-dimensional bridge, it is possible to maintain constant electric connectivity with silicon, even during long-term cycling. The research also demonstrates the improvement of Li-ion diffusion kinetics and cycling properties through low-temperature sintering of double-protected silicon nanoparticles (SiNPs) without damaging the PANI conductive skeleton. The novel composite material, Si@C/PANI-CNT, exhibits excellent discharge capacity and stability over multiple cycles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Qiang Chang, Liu Yao, Wenping Zha, Meifen Wu, Fangfang Xu, Zhaoyin Wen
Summary: This study successfully enhanced the performance of silicon anodes by modifying the electrode structure. The additional pores in the electrodes were able to buffer volume expansion, reduce stress, and improve the conduction of electrons and ions.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Dong Sui, Min Yao, Linqi Si, Kun Yan, Jingge Shi, Jianshe Wang, Charles Chunbao Xu, Yongsheng Zhang
Summary: In this study, advanced SiO2 anodes were prepared by coating hollow SiO2 nanotubes (SNTs) with lignin or phenolated and depolymerized lignin furfural resin (PDLF)-derived carbon. The novel structure of SNTs effectively promotes both Li+ and electron transport, increases active sites for Li+ insertion and accommodates the volume change. SNTs@C-PDLF demonstrates higher specific capacity (661 mAh g(-1) at 100 mA g(-1)), superior rate capability (262 mAh g(-1) at 3000 mA g(-1)), and better cycling stability (549 mAh g(-1) at 1000 mA g(-1) after 800 cycles) compared to SNTs@C-lignin and pristine SNTs.
Article
Chemistry, Physical
Jian Yu, Chaoran Zhang, Weidong Wu, Yuankun Cai, Yafei Zhang
Summary: Silicon has garnered attention for its high specific capacity and abundant reserves, but its volumetric changes during charging and discharging processes have hindered industrial utilization. This study introduces a novel hybrid anode material, Si@void/CNF, designed with a nodes-connected structure that provides both a conductive reticulation for silicon nanoparticles and addresses volume variation. By adjusting the mass ratio of silicon to PMMA, an optimal structure was achieved, demonstrating excellent electrochemical performance with high specific capacity and cycling stability. The electrospun structure of nodes-connected Si@void/CNF offers a promising method for fabricating advanced silicon-based anode materials.
APPLIED SURFACE SCIENCE
(2021)
Review
Chemistry, Physical
Peng Li, Hun Kim, Seung-Taek Myung, Yang-Kook Sun
Summary: This review highlights the necessity of co-exploitation of silicon and graphite, and systematically concludes the key issues, challenges, and perspectives of Si-graphite electrodes. Through a deep understanding of associated electrochemical processes, the component and structural optimization of Si-graphite anodes could be effectively enhanced.
ENERGY STORAGE MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Xu Liu, Huitian Liu, Yuhao Cao, Xiaochen Wu, Zhongqiang Shan
Summary: Chemical-expanded graphite (CEG) is used as a carbon matrix to form Si@CEG/C composites with an embedded structure, effectively addressing the challenges posed by volume change and electrochemical interface of Si anode. The embedded structure enables better cycling performance and rate capability for Si@CEG/C.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Electrochemistry
Xiaohua Huang, Renqing Guo, Yan Lin, Yiqi Cao, Jianbo Wu
Summary: Si/SiC/C in-situ composite microspindles were fabricated using Zn2SiO4/C nanowire bundles obtained from hydrothermal synthesis and magnesiothermic reduction. SiC and C components were uniformly distributed at the nanoscale level within the microspindle particle, strengthening the structure. As an anode material for lithium-ion batteries, the Si/SiC/C composite microspindles exhibited excellent cyclic and rate performances, outperforming pure Si microspindles.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Yixian Pei, Yuxin Wang, An-Yi Chang, Yixin Liao, Shuan Zhang, Xiufang Wen, Shengnian Wang
Summary: In this study, silicon-rich composite anodes with a nanofiber-in-microfiber architecture were prepared using co-axial electrospinning. The composites showed excellent electrochemical performance, achieving a specific capacity of 900mAh/g and a capacity retention of 90% from cycle 50 to cycle 250. The unique fibrous morphology and void space in between the nanofibers helped address the volume expansion issues associated with silicon-rich anodes.
Article
Chemistry, Multidisciplinary
Y. Tzeng, C. -Y. Jhan, K. -M. Chiu, Y. -C. Wu, G. -Y. Chen, P. -S. Wang
Summary: Silicon is investigated as an active material for the anode of lithium-ion battery due to its higher specific capacity. Metal foams are used as current collectors to achieve low resistance and high capacity, but loose adhesion and loss of electrical contacts with the collector are issues unless the foam is densely compressed. By pyrolysis, silicon reacts with nickel on a nickel foam to form nickel silicide while the selected binder is graphitized, resulting in a conductive and porous anode. The reported silicon-based anode with nickel foam exhibits excellent cycling performance and high retained capacity after 50 cycles under specific discharge/charge conditions.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Electrochemistry
Nengwen Ding, Yu Chen, Rui Li, Jun Chen, Chunxiang Wang, Zhifeng Li, Shengwen Zhong
Summary: The study significantly improves the performance of silicon electrode by preparing a composite material of porous silicon with carbon coating and graphene recombination, enhancing cycling stability and rate performance.
ELECTROCHIMICA ACTA
(2021)
Article
Engineering, Environmental
Zhiwei Yang, Lang Qiu, Mengke Zhang, Yanjun Zhong, Benhe Zhong, Yang Song, Gongke Wang, Yuxia Liu, Zhenguo Wu, Xiaodong Guo
Summary: This study prepared an in-situ doped Si/carbon anode material using SiO2 and CO2 as raw materials, achieving nanosizing of silicon and construction of a 3D carbon network, which improved electrical conductivity and cycling performance of the battery. The simple preparation method provides a new idea for modifying silicon-based anode materials, offering valuable insights for further research on carbon doping.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
MinHo Yang, Seunghyun Ko, Ji Sun Im, Bong Gill Choi
JOURNAL OF POWER SOURCES
(2015)
Article
Chemistry, Multidisciplinary
Seunghyun Ko, Jong-Eun Choi, Chul Wee Lee, Young-Pyo Jeon
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2017)
Article
Chemistry, Multidisciplinary
So Young Jang, Seunghyun Ko, Young Pyo Jeon, Jisu Choi, Namkyu Kang, Hwan Chul Kim, Han-Ik Joh, Sungho Lee
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2017)
Article
Chemistry, Multidisciplinary
Hyun-Sig Kil, So Young Jang, Seunghyun Ko, Young Pyo Jeon, Hwan-Chul Kim, Han-Ik Joh, Sungho Lee
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2018)
Article
Chemistry, Multidisciplinary
Jinchang Liu, Hiroki Shimanoe, Koji Nakabayashi, Jin Miyawaki, Seunghyun Ko, Young-Pyo Jeon, Seong-Ho Yoon
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2018)
Article
Chemistry, Physical
Seunghyun Ko, Soon Chang Lee, Chul Wee Lee, Ji Sun Im
JOURNAL OF ALLOYS AND COMPOUNDS
(2014)
Article
Chemistry, Analytical
Hyun-Sig Kil, Kyungae Oh, Young-Jin Kim, Seunghyun Ko, Young Pyo Jeon, Han-Ik Joh, Young-Kwan Kim, Sungho Lee
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2018)
Article
Polymer Science
Hiroki Shimanoe, Seunghyun Ko, Young-Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon
Article
Chemistry, Multidisciplinary
Seunghyun Ko, Yeon Ju Kwon, Jea Uk Lee, Young-Pyo Jeon
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2020)
Article
Polymer Science
Jinchang Liu, Hiroki Shimanoe, Seunghyun Ko, Hansong Lee, Chaehyun Jo, Jaewoong Lee, Seong-Hwa Hong, Hyunchul Lee, Young-Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon
Article
Chemistry, Multidisciplinary
Seunghyun Ko, Dahae Kang, Min-Seong Jo, Seung-Jae Ha, Young-Pyo Jeon
Summary: Preparation of anisotropic pitch with the moderate softening point suitable for carbon material processing from heavy oil is challenging due to excessive thermal reactions. By applying high temperature thin-layer evaporation (TLE) process, a high production yield of 100% mesophase pitch was obtained in a short time.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Jong-Eun Choi, Seunghyun Ko, Young-Pyo Jeon
Article
Chemistry, Multidisciplinary
Jinchang Liu, Hiroki Shimanoe, Jong-Eun Choi, Seunghyun Ko, Young-Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon
Article
Chemistry, Multidisciplinary
Seunghyun Ko, Jong-Eun Choi, Hyejin Yim, Jin Miyawaki, Seong-Ho Yoon, Young-Pyo Jeon