Journal ArticleDOI
Ti3C2Tx MXene Nanosheets as a Robust and Conductive Tight on Si Anodes Significantly Enhance Electrochemical Lithium Storage Performance.
Mengting Xia,Bingjie Chen,Feng Gu,Lianhai Zu,Mengzhu Xu,Yutong Feng,Zhijun Wang,Haijiao Zhang,Chi Zhang,Jinhu Yang +9 more
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TLDR
This work proposes the fabrication of a Si-based composite where Si porous nanospheres (Si p- NSs) are tightly wrapped by Ti3C2Tx (Tx stands for the surface groups such as -OH, -F) MXene nanosheets (TNSs) through an interfacial assembly strategy to develop advanced Si- based anode materials with desirable properties for high-performance LIBs.Abstract:
Exploring Si-based anode materials with high electrical conductivity and electrode stability is crucial for high-performance lithium-ion batteries (LIBs). Herein, we propose the fabrication of a Si-based composite where Si porous nanospheres (Si p-NSs) are tightly wrapped by Ti3C2Tx (Tx stands for the surface groups such as -OH, -F) MXene nanosheets (TNSs) through an interfacial assembly strategy. The TNSs as a conductive and robust tight of the Si p-NSs can effectively improve electron transport and electrode stability, as revealed by substantial characterizations and mechanical simulations. Moreover, the TNSs with rich surface groups enable strong interfacial interactions with the Si p-NS component and a pseudocapacitive behavior, beneficial for fast and stable lithium storage. Consequently, the Si p-NS@TNSs electrode with a high Si content of 85.6% exhibits significantly enhanced battery performance compared with the Si p-NSs electrode such as high reversible capacity (1154 mAh g-1 at 0.2 A g-1), long cycling stability (up to 2000 cycles with a 0.026% capacity decay rate per cycle), and excellent rate performances. Notably, the Si p-NS@TNSs electrode-based LIB full cell delivers a high energy uptake of 405 Wh kg-1, many-times higher than that of the Si p-NSs full cell. This work offers a strategy to develop advanced Si-based anode materials with desirable properties for high-performance LIBs.read more
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Prelithiation: A Crucial Strategy for Boosting the Practical Application of Next-Generation Lithium Ion Battery.
TL;DR: In this article, the advantages and challenges of various prelithiation methods for compensating the initial irreversible capacity of the anode have been systematically summarized and analyzed, providing enlightenment for the further development of each pre lithiation strategy toward commercialization and thus facilitating the practical application of high-specific-capacity anodes in the next generation high-energy-density lithium-ion batteries.
Journal ArticleDOI
Mesoporous Materials for Electrochemical Energy Storage and Conversion
Lianhai Zu,Lianhai Zu,Wei Zhang,Longbing Qu,Liangliang Liu,Wei Li,Aibing Yu,Aibing Yu,Dongyuan Zhao,Dongyuan Zhao +9 more
TL;DR: In this paper, mesoporous materials have shown great potential to achieve high-performance electrodes with high energy/power density, long lifetime, increased interfacial reaction activity, and enhanced kinetics.
Journal ArticleDOI
N-doped porous carbon nanofibers sheathed pumpkin-like Si/C composites as free-standing anodes for lithium-ion batteries
Yanfei Zeng,Yudai Huang,Niantao Liu,Xingchao Wang,Yue Zhang,Yong Guo,Hong-Hui Wu,Huixin Chen,Xincun Tang,Qiaobao Zhang +9 more
TL;DR: In this paper, a free-standing N-doped porous carbon nanofibers sheathed pumpkin-like Si/C composites (Si/C-ZIF-8/CNFs) are designed and synthesized by electrospinning and carbonization methods, which present greatly enhanced electrochemical properties for lithium-ion battery anodes.
Journal ArticleDOI
Recent Progress and Future Perspective on Practical Silicon Anode-Based Lithium Ion Batteries
TL;DR: In this paper , the development history of Si anodes is briefly introduced, and pivotal challenges and countermeasures toward practical Si anode are emphasized regarding structure regulation, interface modulation, and novel binder and electrolyte design.
Journal ArticleDOI
Recent Advances in Silicon-Based Electrodes: From Fundamental Research toward Practical Applications
Mingzheng Ge,Chunyan Cao,Gill M. Biesold,Christopher D. Sewell,Shu-Meng Hao,Jianying Huang,Wei Zhang,Yuekun Lai,Zhiqun Lin +8 more
TL;DR: The state-of-the-art developments made in the rational design of Si-based electrodes and their progression toward practical application are presented in this article, where a comprehensive overview of fundamental electrochemistry and selected critical challenges are given, including their large volume expansion, unstable solid electrolyte interface (SEI) growth, low initial Coulombic efficiency, low areal capacity, and safety issues.
References
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Journal ArticleDOI
Electrical Energy Storage for the Grid: A Battery of Choices
TL;DR: The battery systems reviewed here include sodium-sulfur batteries that are commercially available for grid applications, redox-flow batteries that offer low cost, and lithium-ion batteries whose development for commercial electronics and electric vehicles is being applied to grid storage.
Journal ArticleDOI
Two‐Dimensional Nanocrystals Produced by Exfoliation of Ti 3 AlC 2
Michael Naguib,Murat Kurtoglu,Volker Presser,Jun Lu,Junjie Niu,Min Heon,Lars Hultman,Yury Gogotsi,Michel W. Barsoum +8 more
TL;DR: 2D nanosheets, composed of a few Ti 3 C 2 layers and conical scrolls, produced by the room temperature exfoliation of Ti 3 AlC 2 in hydrofl uoric acid are reported, which opens a door to the synthesis of a large number of other 2D crystals.
Journal ArticleDOI
25th Anniversary Article: MXenes: A New Family of Two‐Dimensional Materials
TL;DR: In this article, a new family of two-dimensional early transition metal carbides and carbonitrides, called MXenes, was discovered and a detailed outlook for future research on MXenes is also presented.
Journal ArticleDOI
Conductive two-dimensional titanium carbide ‘clay’ with high volumetric capacitance
TL;DR: This capacitance report reports a method of producing two-dimensional titanium carbide ‘clay’ using a solution of lithium fluoride and hydrochloric acid that offers a much faster route to film production as well as the avoidance of handling hazardous concentrated hydrofluoric acid.
Journal ArticleDOI
High-rate electrochemical energy storage through Li+ intercalation pseudocapacitance
Veronica Augustyn,Jeremy Come,Jeremy Come,Michael A. Lowe,J. W. Kim,Pierre-Louis Taberna,Pierre-Louis Taberna,Sarah H. Tolbert,Héctor D. Abruña,Patrice Simon,Patrice Simon,Bruce Dunn +11 more
TL;DR: This work quantifies the kinetics of charge storage in T-Nb2O5: currents that vary inversely with time, charge-storage capacity that is mostly independent of rate, and redox peaks that exhibit small voltage offsets even at high rates.