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
Electrochemistry
Wei Wang, Yuchen Li, Yan Wang, Weibo Huang, Linze Lv, Guobin Zhu, Qunting Qu, Yirui Liang, Wei Zheng, Honghe Zheng
Summary: Binder modification with novel grafting strategy improves the performance of Si anodes in high energy density lithium-ion batteries. The modified PVA binder enhances cycle stability and electrochemical performance of Si anodes at high current densities. The UFR modified PVA binder also exhibits significant advantages in full cells, improving the cycle stability of Si//LiFePO4 configurations.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Guanqin Wang, Jie Zhang, Qingrong Zhang, Xiufeng Tan, Qiang Li, Kai Xie
Summary: The in-situ coating of Si nanoparticles with Nb2O5 to form a core-shell structure significantly enhances the electrochemical performance of lithium-ion batteries, including increased capacity and cycle life. This method is considered to have great potential in energy storage systems.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
S. Y. Zhu, Y. F. Yuan, P. F. Du, M. Zhu, Y. B. Chen, S. Y. Guo
Summary: This study focuses on improving the lithium storage performance of MnS by addressing its low conductivity and volume variation issues through a novel synthesis strategy and composite structure. The composite material consists of alpha-MnS nanoparticles grown within a 3D macroporous honeycomb carbon framework. The composite demonstrates enhanced specific capacity, cycling durability, and rate capability, as well as excellent kinetics properties, thanks to the smart design of the confined alpha-MnS nanoparticles.
APPLIED SURFACE SCIENCE
(2023)
Article
Energy & Fuels
Hyocheol Lee, Anjali Nagapadi Preman, Thuan Ngoc Vo, Jin-Hyeong Lee, Il Tae Kim, Suk-kyun Ahn
Summary: In order to overcome the rapid capacity decay of silicon as a battery material, researchers have synthesized a series of multifunctional acrylic random copolymer binders and modulated their adhesive and mechanical properties. By adding acrylic acid and glyceryl groups, these binders can undergo in situ crosslinking at lower temperatures, leading to improved electrochemical performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Hao Li, Zidong Chen, Zhirong Kang, Wei Liu, Yungui Chen
Summary: This study presents stuffed high-density Si-C particles that are crack-resistant and exhibit highly reversible Li-storage performances. The particles consist of Si particles implanted into a dual-layered carbon matrix, allowing an intraparticle on-site voiding mechanism to prevent cracking and swelling. The resulting Si-C particles possess high density and low surface area, delivering improved capacity retention and energy density when paired with LiFePO4 cathodes.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Physical
Zhiwen Wang, Dong Cao, Mingxi Ren, Hanning Zhang, Limei Pan, Chuanfang John Zhang, Jian Yang
Summary: A Si@Ti3C2Tx composite with a fluffy and porous structure was prepared using a simple suspension mixing-freeze drying process, which can effectively improve the stability and cycling efficiency of silicon nanoparticles in lithium-ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Li Zeng, Hongxue Xi, Xingang Liu, Chuhong Zhang
Summary: Silicon/carbon nanofibers with a core-shell structure were successfully fabricated using a coaxial electrospinning technique, exhibiting excellent electrochemical performance, high electrical conductivity, and structural stability, showing great potential for advanced flexible energy storage.
Article
Electrochemistry
Rongrong Miao, Jinhui Zhu, Shimin Kang, Jun Yang, Jiulin Wang, Jinxia Fu, Minggui Li, Cansheng Shi
Summary: A novel sub-micro Si/Sn@SiOx-C (SSSC) composite with impressive rate capability and stable cyclability has been designed and synthesized. The SSSC-73 structure shows stable cycling and exceptional rate performance, with high capacity retention over 500 cycles. The facile and cost-effective preparation method of SSSC composites has no by-products, making it competitive for practical application.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Yao Zhang, Chaoye Zhu, Zhihong Ma
Summary: Silicon has been widely accepted as a promising anode material for new-generation lithium-ion batteries due to its high lithium storage density and abundant mineral resources. This study proposed a simple and environmentally friendly method to prepare a Si-Cu3Si composite with coherent phase boundaries, which significantly improves the cyclic stability of silicon anodes. The effects of morphology, composition, and structure on the electrochemical performance of the nano-sized Si@Cu3Si anode were clarified through various analyses.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Renfei Cao, Kai Chen, Yangfeng Cui, Jianwei Liu, Wanqiang Liu, Gang Huang, Xinbo Zhang
Summary: Researchers have developed a gel polymer electrolyte that protects the Li anode in a lithium-air battery, enabling high-performance operation in ambient air. The in-situ formed gel polymer electrolyte forms a gradient SEI film that prevents dendrite growth and corrosion reactions, resulting in durable plating/stripping of lithium and extending the lifetime of the battery.
CHINESE CHEMICAL LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Yaxiong Yang, Shugang Liu, Zhe Dong, Zhenguo Huang, Cheng Lu, Yongjun Wu, Mingxia Gao, Yongfeng Liu, Hongge Pan
Summary: This study demonstrates an effective hierarchical conformal coating strategy for high-performance microsized Si anodes, which enhances mechanical properties, promotes ionic diffusion, stabilizes electrode/electrolyte interfaces, and increases electronic conductivity. The optimized structure achieves high reversible capacity, cycling stability, and rate capability.
APPLIED MATERIALS TODAY
(2022)
Article
Materials Science, Multidisciplinary
Zeyu Zhang, Shixiong Sun, Wen Zhang, Jia Xu, Xin Wang, Chun Fang, Qing Li, Jiantao Han
Summary: A watermelon-like core-buffer-shell Si/electrochemically exfoliated graphene/C (Si/EG/C) composite was prepared using ball milling and spray drying. The composite exhibited excellent electrochemical performance due to the presence of folds and voids in the graphene layer, which buffered the volume fluctuations of the silicon core and facilitated fast lithium ion transport. It has potential applications in the next generation of Li-ion batteries.
SCIENCE CHINA-MATERIALS
(2022)
Article
Chemistry, Physical
Junying Zhang, Zhi-Ling Hou, Xiaoming Zhang, Chuanbo Li
Summary: In this study, Si@Cu composite anode material prepared by magnetron sputtering method showed enhanced electrochemical performance for lithium-ion batteries. The introduction of Cu component and carbon layer improved conductivity and cyclic performance of the electrode. The preparation methods are mass-productive and the magnetron sputtering method has broad application prospects.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Xiaoxue Chen, Gaofeng Ge, Wenyu Wang, Bao Zhang, Jianjun Jiang, Xuelin Yang, Yuzhang Li, Li Wang, Xiangming He, Yongming Sun
Summary: Utilizing solar Si photovoltaic waste as a material for battery anodes can simultaneously solve the problem of solid waste pollution and enable high energy density LIBs. The Si-P core shell structure reduces undesirable side reactions between Si and electrolytes, resulting in stable electrochemical cycling performance.
SCIENCE CHINA-CHEMISTRY
(2021)
Article
Chemistry, Physical
Linze Lv, Yan Wang, Weibo Huang, Yueyue Wang, Zhang Cao, Yuchen Li, Qiang Shi, Honghe Zheng
Summary: This work investigates the effect of cathode type on the electrochemical performance of Si-based FCs and finds that NCM523 is more suitable for achieving high-rate and long-cycle in Si-based FCs. The cathode type impacts the distribution of electrolyte decomposition products, and NCM523 benefits the formation of more conductive organic components and LiF that prevents electrolyte erosion.
JOURNAL OF POWER SOURCES
(2022)
Article
Nanoscience & Nanotechnology
Weibo Huang, Yan Wang, Linze Lv, Yueyue Wang, Xiang Li, Honghe Zheng
Summary: This study improves the electrochemical performance of silicon anodes by constructing a multifunctional poly(propargylamine) layer on the silicon surface. It enhances lithium storage capability and exhibits better characteristics in a full cell.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Electrochemistry
Linze Lv, Yan Wang, Weibo Huang, Yueyue Wang, Guobin Zhu, Honghe Zheng
Summary: The type of lithium salt significantly influences the electrochemical performance of silicon anodes, with a ternary composite lithium salt showing the best cycling stability and rate capability for high-rate and long-cycle silicon anodes.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Zhang Cao, Xueying Zheng, Yan Wang, Weibo Huang, Yuchen Li, Yunhui Huang, Honghe Zheng
Summary: By tailoring a multifunctional solid-electrolyte interphase (SEI) precursor and polymerizing to form a stable artificial SEI during high-temperature drying process, the stability and performance of silicon (Si) anodes are significantly improved.
Article
Nanoscience & Nanotechnology
Linze Lv, Yan Wang, Weibo Huang, Yuchen Li, Qiang Shi, Honghe Zheng
Summary: This study develops a silver-decorated mucic acid buffer interface on the silicon surface, improving the electrochemical performance of silicon anodes by enhancing their capacity and rate capability during cycling. The improved performance is mainly attributed to the reduced volume effect of silicon particles, sustained integrity of the electrode laminate, enhanced lithium diffusion on the silicon surface, improved electronic conductivity of the silicon anode, and facilitated formation of inorganic components in the solid electrolyte interface film.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Weibo Huang, Yan Wang, Linze Lv, Guobin Zhu, Qunting Qu, Honghe Zheng
Summary: To construct high-energy-density silicon-based Li-ion batteries, it is crucial to optimize and build a robust solid electrolyte interphase (SEI) to overcome the severe side reactions caused by volume changes in silicon (Si) anodes. This study combines electrolyte design and surface modification to create a phenyl trifluoromethanesulfonimide (PTFSI) interfacial layer on the Si surface, with additive functions. The resulting customized PTFSI interfacial layer modulates the solvation/desolvation reaction mechanism at the electrode interface, forming an artificial SEI structure composed of oligomers and inorganic salts. This structure exhibits fast ionic conductivity, reduces electrolyte consumption, and maintains the integrity of the electrode structure, leading to significantly improved rate capability and cycling performance of the optimized Si@PTFSI anode.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Weibo Huang, Yan Wang, Linze Lv, Xiang Li, Yueyue Wang, Wei Zheng, Honghe Zheng
Summary: To address the interface side reactions caused by volume expansion of Si particles, beneficial groups of binder and electrolyte were introduced on Si surface, forming a trinity functional layer. This layer enhances mechanical strength, restrains harmful reactions, and maintains efficient ion/electron transport, improving the overall performance of the Si electrode.
Article
Electrochemistry
Linze Lv, Yan Wang, Weibo Huang, Yueyue Wang, Xiang Li, Honghe Zheng
Summary: This work investigates the cycling stability of silicon-based half and full cells at a wide temperature range and the associated capacity fading mechanisms. Results show that low temperature causes a decrease in capacity due to sluggish kinetics, and high temperature results in the lowest first Coulombic efficiency and the worst cycling stability with different capacity fading mechanisms. In addition, composition and stability of solid-electrolyte interphase films are strongly temperature sensitive. This work has important guiding significance for promoting the development and application of Si anodes in lithium ion batteries.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Yuchen Li, Xueying Zheng, Zhang Cao, Yan Wang, Yueyue Wang, Linze Lv, Weibo Huang, Yunhui Huang, Honghe Zheng
Summary: The commercialization of silicon anodes in lithium-ion batteries has been hindered by their low Coulombic efficiency and poor cycling stability. In this study, Li-trapping is identified as a major factor affecting the initial efficiency and stability of silicon anodes. Trapped active Li accounts for about 40% of the irreversible capacity, while trapped inactive Li contributes to about 75% of the total capacity loss after 20 cycles.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Physical
Yueyue Wang, Yan Wang, Xiang Li, Linze Lv, Weibo Huang, Qiang Shi, Honghe Zheng
Summary: This study proposes a three-dimensional binder network synthesized by weaving Ni2+ anchored soft gellan gum chains with linear rigid polyvinyl alcohol chains. The obtained binder exhibits soft-rigid synergy and self-recovery ability, enabling the Si anode to deliver over 1500 mAh g-1 after 500 cycles at 2.1 A g-1. The binder can buffer the volume changes of Si particles and retain the overall stability of the electrode. Furthermore, the optimized Si anode shows a high capacity retention of approximately 50% even at 84 A g-1 due to the provision of uniform Li+ flux and more Li+ transport channels by the binder network.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Fu Long, Yuyang Liu, Guobin Zhu, Yan Wang, Honghe Zheng
Summary: A passivation technique was used to create a stable composite interface on the surface of LiNi0.8Co0.1Mn0.1O2 cathode material, greatly improving its cycle life-span and high-voltage constancy in lithium-ion batteries.
Article
Engineering, Environmental
Xiang Li, Wei Liu, Yan Wang, Linze Lv, Huaiwei Feng, Weibo Huang, Yu Sun, Weixing Xiong, Honghe Zheng
Summary: Covalent organic frameworks (COFs) have great potential as electrode materials for high-performance lithium-ion batteries (LIBs), due to their easy structure control, abundant tunable porous structures, and reversible redox behavior of electroactive organic groups. However, most reported COFs have low capacity due to the inability of the backbone moiety's aromatic conjugated structure to participate in redox reactions. In this study, an imine bond-rich COF (TAACOF) with reversible Li-ion bonding was developed, which greatly improved the electrode capacity by inducing lithium ions to combine with the aromatic conjugated structure.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yuchen Li, Zhang Cao, Yan Wang, Linze Lv, Jiayang Sun, Weixing Xiong, Qunting Qu, Honghe Zheng
Summary: In this study, it was found that the role of FEC in suppressing Li-trapping is more important than stabilizing the SEI film. FEC, as an additive in the electrolyte, significantly reduces the growth of SEI and Li-trapping within Si particles. Microscopic studies showed that FEC inhibits the formation of Li15Si4 and reduces Li-trapping by doping LiF into the silicon phase.
ACS ENERGY LETTERS
(2023)
Article
Engineering, Environmental
Weibo Huang, Yan Wang, Xiang Li, Huaiwei Feng, Yuchen Li, Guobin Zhu, Honghe Zheng
Summary: Silicon is a promising anode material for lithium-ion batteries, but its practical application is limited by issues such as capacity fading and mechanical failure. This study introduces a multifunctional composite binder that enhances the stability and performance of silicon anodes through various mechanisms, including stabilizing the electrode structure and promoting ion transport.
CHEMICAL ENGINEERING JOURNAL
(2023)
