Article
Electrochemistry
Tian Tan, Pui-Kit Lee, Nobuyuki Zettsu, Katsuya Teshima, Denis Y. W. Yu
Summary: Researchers have developed a simple pre-sodiation technique using a small amount of Na2CO3 to improve the first Coulombic efficiency and thermal stability of SiO. This method eliminates the need for lithium metal, solvent, or disassembling and re-assembling of batteries. The incorporation of Na facilitates the decomposition of SiO into crystalline Si and SiO2, reducing the reactivity with lithium and suppressing irreversible capacity during initial lithiation.
ELECTROCHIMICA ACTA
(2022)
Article
Nanoscience & Nanotechnology
Cancan Bian, Rusheng Fu, Zhepu Shi, Jingjing Ji, Jun Zhang, Wen Chen, Xufeng Zhou, Siqi Shi, Zhaoping Liu
Summary: This study reports an economical and convenient method to increase the initial Coulombic efficiency (ICE) of silicon monoxide (SiO) anode material and successfully synthesizes a reaction product (MSO) with a core-shell structure. The MSO exhibits superior ICE, reversible capacity, and improved cyclic stability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Dong Jae Chung, Donghan Youn, Soohwan Kim, Donghyeok Ma, Jiwhan Lee, Won Joon Jeong, Eunjun Park, Joon-Sup Kim, Chulsoon Moon, Ji Yeong Lee, Heeyoung Sun, Hansu Kim
Summary: Research shows that dehydrogenation-driven prelithiation using lithium hydride can significantly improve the initial Coulombic efficiency of silicon monoxide, thereby enhancing the performance of lithium-ion batteries. Silicon monoxide prelithiated through this method exhibits higher capacity and better cycling stability in tests, enabling a significant increase in the energy density of the overall battery system.
Article
Electrochemistry
Gerrit Michael Overhoff, Roman Noelle, Vassilios Siozios, Martin Winter, Tobias Placke
Summary: The study evaluates the beneficial impact of pre-lithiated Si/C electrodes in NCM111 and their effects on battery performance. It shows that pre-lithiation techniques can significantly improve both capacity and cycling efficiency of the batteries.
BATTERIES & SUPERCAPS
(2021)
Article
Chemistry, Multidisciplinary
Zeheng Li, Weiting Tang, Yajun Yang, Guoyong Lai, Zheng Lin, Huayan Xiao, Juncheng Qiu, Xiujuan Wei, Shuxing Wu, Zhan Lin
Summary: In this study, an engineering prelithiation binder strategy based on polyacrylic acid is proposed to improve the initial Coulombic efficiency and cycling lives of SiOx anodes, which can also be applied to other Si anodes.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Peer Baermann, Marvin Mohrhardt, Joop Enno Frerichs, Malina Helling, Aleksei Kolesnikov, Sina Klabunde, Sascha Nowak, Michael Ryan Hansen, Martin Winter, Tobias Placke
Summary: The study demonstrates significant lithiation of Si/Gr electrodes through direct contact with Li metal, without electrolyte, and subsequent de-lithiation and SEI formation after electrolyte addition. The amount of Li metal highly impacts the presence and durability of LixC and LixSi phases.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Rabia Khatoon, Sanam Attique, Rumin Liu, Sajid Rauf, Nasir Ali, Luhong Zhang, Yu-Jia Zeng, Yichuan Guo, Yusuf Valentino Kaneti, Jongbeom Na, Haichao Tang, Hongwen Chen, Yang Tian, Jianguo Lu
Summary: Using waste milk powder as a precursor, a hollow micro-/mesoporous sulfur host was constructed and employed as a cathode material for lithium sulfur batteries. The resulting composite exhibited high capacity, long cycling stability, and low capacity fading, making it a promising environmentally safe electrode material for advanced energy storage.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Electrochemistry
Wenzhuo Shen, Haoyuan Ding, Jiali Zhang, Min Zhong, Shouwu Guo
Summary: Pre-electroplating metal or graphene on graphite surfaces resulted in uniform coating, with the metal improving electron/ion transfer capability and graphene controlling SEI formation to offset Li ion consumption during initial lithiation/delithiation cycles.
Review
Chemistry, Multidisciplinary
Lin Sun, Yanxiu Liu, Jun Wu, Rong Shao, Ruiyu Jiang, Zuoxiu Tie, Zhong Jin
Summary: This review comprehensively examines recent advances in improving the initial Coulombic efficiency (ICE) of SLIBs, categorizing strategies into aspects such as structure regulation, prelithiation, interfacial design, binder design, and electrolyte additives. By highlighting and discussing the merits and challenges of various approaches, valuable insights into the rational design and development of state-of-the-art techniques to address the deteriorative issue of low ICE in SLIBs are provided. Conclusions and future promising research prospects for enhancing the ICE of SLIBs are proposed at the end.
Review
Materials Science, Multidisciplinary
Kailimai Su, Yan Wang, Bao Yang, Xu Zhang, Wei Wu, Junwei Lang, Xingbin Yan
Summary: This review provides a comprehensive summary of the important role of pre-lithiation in lithium-ion capacitors (LICs) and the application of cathode sacrificial lithium salts (CSLSs) in pre-lithiation strategies. Various pre-lithiation methods are systematically discussed and compared, highlighting the lithium extraction mechanism of CSLSs and their influence on LICs performance. A summary and outlook are provided to guide the development of new pre-lithiation technologies.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Aurora Gomez-Martin, Maike Michelle Gnutzmann, Egy Adhitama, Lars Frankenstein, Bastian Heidrich, Martin Winter, Tobias Placke
Summary: This study investigates the application of lithium squarate as a pre-lithiation additive in lithium ion batteries. The results show that using lithium squarate as a pre-lithiation additive can increase the cycle life of the batteries, but there are potential limitations due to gas development during the decomposition of the additive.
Article
Materials Science, Multidisciplinary
Xingyang Du, Hanying Zhang, Xuexia Lan, Bin Yuan, Renzong Hu
Summary: The SiO-Sn-Co/graphite (G) anode, with a unique structure of tiny milled SiO-Sn-Co particles dispersed among graphite layers, successfully improved the initial Coulombic efficiencies (ICE) and cycle stability. The alloy promoted Li+ extraction kinetics, while the reversibility of SiO and graphite enhanced electrical conductivity, resulting in high average ICE of 77.6% and capacity retention above 98% after 100 cycles.
ENERGY & ENVIRONMENTAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Xiao-Dong Li, Yu-Ming Zhao, Yi-Fan Tian, Zhuo-Ya Lu, Min Fan, Xu-Sheng Zhang, He Tian, Quan Xu, Hong-Liang Li, Yu-Guo Guo
Summary: In this study, a Li/B co-doping strategy was developed to enhance the initial Coulombic efficiency and cycling stability of SiOx@C anodes, while alleviating volume expansion and pulverization. The findings are significant for the practical application of high-energy-density lithium-ion batteries.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Andreas Stein, Minog Kim, Brian D. Spindler, Lifeng Dong
Summary: A major limitation of lithium-ion batteries is the irreversible loss of 5-20% lithium during the first charge-discharge cycle, reducing the battery capacity. This study found that Li8ZrO6 (LZO) can serve as a pre-lithiation additive to compensate for the capacity loss. The optimal loading of 5 wt % LZO significantly improved the reversible specific capacity and capacity retention.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Electrochemistry
Jim P. Zheng, Petru Andrei, Liming Jin, Junsheng Zheng, Cunman Zhang
Summary: Pre-lithiation is an effective method to overcome initial capacity loss in high-capacity electrodes and has the potential to be used in beyond-conventional lithium-ion batteries. This article focuses on two types of pre-lithiation methods and provides theoretical formulas to predict the specific energy of lithium-ion batteries based on measurable parameters.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Zhida Chen, Wenda Chen, Lirong Zheng, Tao Huang, Jing Hu, Yaqi Lei, Qi Yuan, Xiangzhong Ren, Yongliang Li, Lei Zhang, Shaoluan Huang, Shenghua Ye, Qianling Zhang, Xiaoping Ouyang, Xueliang Sun, Jianhong Liu
Summary: The morphological distribution of Ru on nitrogen-doped graphene can be regulated by modulating the combination mode. In alkaline solutions, the combination of Ru single-atom sites and Ru nanoparticles can synergistically promote excellent hydrogen evolution reaction performance.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Biotechnology & Applied Microbiology
Lei Chen, ZhanDong Li, ShiQi Zhang, Yu-Hang Zhang, Tao Huang, Yu-Dong Cai
Summary: Methylation is a common and important modification in biological systems, and recent studies have found that methylation is widely present in different RNA molecules. Computational prediction methods may serve as an alternative to detect all methylation sites.
BIOMED RESEARCH INTERNATIONAL
(2022)
Article
Chemistry, Physical
Longzhen You, Ya Wen, Guangxin Li, Binbin Chu, Jianhua Wu, Tao Huang, Aishui Yu
Summary: Ni-rich ternary layered oxide materials are preferred cathode materials for lithium-ion batteries due to their high specific discharge capacity and low cost. However, the hierarchical structure of these materials suffers from structural collapse, resulting in serious side reactions and capacity decline, especially at high cut-off voltage. Single-crystalline materials and surface modification with nano-TiO2 can improve the cycling performance by inhibiting intergranular cracking and side reactions at the electrode/electrolyte interface.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Longzhen You, Guangxin Li, Ben Huang, Binbin Chu, Tao Huang, Aishui Yu
Summary: Effective and uniform surface modification is achieved by using a liquid-phase assisted method to synthesize 1 W@NCM811, which results in a uniform WO3/Li2WO4 coating on the surface. The coating acts as an ideal protective layer, stabilizing the cathode/electrolyte interface and improving electrochemical kinetics and thermal stability. The 1 W@NCM811-based cathode shows significantly enhanced performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Multidisciplinary
Zhengwei Guo, Zezheng Chen, Yinjiang Deng, Tao Huang, Taotao Chen, Jie Huang, Zhaohong Wang
Summary: Trenchless technology is a new technique for underground pipeline construction, but accidents often occur due to hole wall failure. This study uses theoretical and numerical calculations to investigate the stability of the hole wall in relation to diameter, burial depth, and soil parameters. The findings indicate that the stress and deformation of the hole wall increase with the diameter and burial depth, and different Poisson's ratios and elastic moduli affect the stress and deformation. This research provides important guidance for selecting construction parameters and trenchless path.
MATHEMATICAL PROBLEMS IN ENGINEERING
(2022)
Article
Engineering, Electrical & Electronic
Zhao-Yang Li, Xue-Jiao Wang, Han-Lun Cai, Zhao-Zhang Yan, Tao Huang, Yu-Long Jiang, Jing Wan
Summary: In this study, the influence of TiAl gate electrodes fabricated by physical vapor deposition (PVD) and atomic layer deposition (ALD) on electron mobility in metal-gated NMOSFETs was investigated. The ALD TiAl film contained a high amount of C atoms which suppressed its O-gettering capability. The PVD TiAl device showed about 15% higher peak mobility compared to the ALD TiAl device, attributed to lower bulk trap density in gate dielectric layers and the ability to extract more O atoms.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Engineering, Electrical & Electronic
Tao Huang, Run-Ling Li, Han-Lun Cai, Zhao-Yang Li, Yu-Long Jiang
Summary: In this work, the variation of threshold voltage (V-t) for multi-V-t FinFETs is investigated by changing the thickness of work function metal (WFM) TiN from the perspective of process integration. Four different WFM thicknesses are prepared through a combination of atomic layer deposition (ALD) and wet etching of TiN layers. The results show that the V-t variation is significant for N-FinFET with only one layer of TiN, and the TiN layer is partially eroded during wet etching, even though it should be protected by a photoresist. It is proposed and demonstrated that a high-temperature pre-baking treatment can effectively reduce the unexpected erosion of the TiN layer and suppress the V-t variation.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Chemistry, Physical
Mengyuan Song, Changhao Tian, Chunguang Chen, Tao Huang, Aishui Yu
Summary: Lithium-oxygen batteries have high energy density, but conventional liquid electrolytes struggle to form a stable solid electrolyte interface (SEI) on the cathode surface for long-term stable cycling. LiBOB is added to the LiTFSI-based electrolyte to solve this issue. The introduction of LiBOB induces the dissociation equilibrium of the lithium salt positively, resulting in an electrolyte with good ionic conductivity. Different amounts of LiBOB exhibit different characteristics in electrochemical performance, with trace amounts improving discharge capacity. The synergistic effect of the LiTFSI-LiBOB dual-salt electrolyte forms a protective SEI, leading to comparable cycling performance.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Changhao Tian, Jiantao Tang, Leidanyang Wang, Rui Huang, Chao Ai, Huajun Cao, Tao Huang, Aishui Yu
Summary: This paper investigates the preparation method of solid-state electrolytes (SSEs) for lithium metal batteries with different solvent contents. The presence of residual solvent in SSEs can affect their performance. The study reveals that the solvent content decreases with drying time, but even after 48 hours of vacuum drying, it still contains more than 5% solvent. The presence of residual solvent promotes the binding of lithium ions and carbonyls, facilitating the transfer of lithium ions. When the solvent content is high, SSEs exhibit high ionic conductivity, cycling capacity, and excellent cycling stability, while decreasing solvent content widens the electrochemical window.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Electrochemistry
Jinyu Chen, Binbin Chu, Guangxin Li, Tao Huang, Aishui Yu
Summary: In this study, a cobalt-doped ultrahigh-nickel-based layered LiNi0.95Mn0.05O2 cathode material is synthesized through solid solution and post-heat treatment, which significantly consumes residual lithium and improves the structural degradation and capacity fade issues in nickel-rich cathode materials. The optimized sample shows increased discharge capacity and enhanced capacity retention.
ELECTROCHEMISTRY COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Tao Huang, Han-Lun Cai, Song He, Zhao-Yang Li, Yu-Long Jiang
Summary: This study reveals that the OFF-state leakage of short channel n-FinFETs can be significantly reduced by the self-adaptive etching of work function metal TiN. The microloading effect is utilized to achieve the self-adaptive etching, resulting in a thick TiN layer with a high work function on the fin bottom and a thin TiN layer with a low work function on the fin top for short channel n-FinFETs. Such nonuniform work function distribution effectively reduces the threshold voltage roll-off.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Engineering, Electrical & Electronic
Han-Lun Cai, Run-Ling Li, Tao Huang, Zhao-Yang Li, Zhong-Hua Li, Yu-Long Jiang
Summary: Increasing the Ti-silicidation anneal temperature can lower the threshold voltage (Vt) for FinFET with TiAl based metal gate. It is found that the reduction in Vt is related to the deoxidation of Ti, segregation of O, and oxidation of Al in the TiN/TiAl/TiN/TaN stack. A new effective work function (EWF) tuning model is proposed, which suggests that the EWF is determined by the formation of metallic Ti or TiC in the C-rich TiAl layer and the formation of metallic Ti in the C-free TiN layer.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Chemistry, Physical
Binbin Chu, Ruoyu Xu, Guangxin Li, Jinyu Chen, Zijian Xu, Tao Huang, Bo Wang, Aishui Yu
Summary: In this study, a LiNi0.92Co0.04Mn0.04O2 single-crystal cathode material with an average particle size of 1.69 μm was prepared via a temperature fluctuation method combined with B and W surface modification. The as-formed Li-B-O and Li2WO4 lithium ion conductors successfully enhanced the discharge capacity and cycle retention of the material by facilitating lithium ion diffusion. The surface modification also constructed a uniform boron-rich cathode/electrolyte interface layer, protecting the particles from electrolyte erosion and improving the homogeneity of chemical states of Ni within the particles after long cycling.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Mengyuan Song, Changhao Tian, Tao Huang, Aishui Yu
Summary: In this study, a succinonitrile-based gel polymer electrolyte (SLFE) was prepared and further modified by adding LAGP, resulting in SLFE-5%LAGP with high ionic conductivity, long-term stability, and high discharge capacity. The integration of electrolytes and electrodes in this work improves the performance of solid-state lithium-oxygen batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Mengyuan Song, Changhao Tian, Xintong Xu, Tao Huang, Aishui Yu
Summary: To address the issues of leakage, volatilization, and poor electrochemical performance in lithium-oxygen batteries (LOBs), a succinonitrile-based (SN) gel polymer electrolyte (GPE-SLFE) is developed. The GPE-SLFE exhibits high room-temperature ionic conductivity (1.61 mS cm-1 at 25 degrees C), a high lithium-ion transference number (tLi+ = 0.489), and excellent long-term stability of the Li/GPE-SLFE/Li symmetric cell for over 220 h at a current density of 0.1 mA cm-2. Moreover, cells with the GPE-SLFE demonstrate a high discharge specific capacity of 4629.7 mAh g-1 and achieve 40 cycles.
ACS APPLIED MATERIALS & INTERFACES
(2023)