Journal ArticleDOI
High Areal Capacity and Lithium Utilization in Anodes Made of Covalently Connected Graphite Microtubes
Reads0
Chats0
TLDR
It is suggested that an optimized microstructure with moderate electrode/electrolyte interface area is critical to accommodate volume change and inhibit the risks of irreversible Li consumption by side reactions and Li dendrite growth for high-performance Li-metal anodes.Abstract:
Lithium metal is an attractive anode material for rechargeable batteries because of its high theoretical specific capacity of 3860 mA h g-1 and the lowest negative electrochemical potential of -3.040 V versus standard hydrogen electrode. Despite extensive research efforts on tackling the safety concern raised by Li dendrites, inhibited Li dendrite growth is accompanied with decreased areal capacity and Li utilization, which are still lower than expectation for practical use. A scaffold made of covalently connected graphite microtubes is reported, which provides a firm and conductive framework with moderate specific surface area to accommodate Li metal for anodes of Li batteries. The anode presents an areal capacity of 10 mA h cm-2 (practical gravimetric capacity of 913 mA h g-1 ) at a current density of 10 mA cm-2 , with Li utilization of 91%, Coulombic efficiencies of ≈97%, and long lifespan of up to 3000 h. The analysis of structure evolution during charge/discharge shows inhibited lithium dendrite growth and a reversible electrode volume change of ≈9%. It is suggested that an optimized microstructure with moderate electrode/electrolyte interface area is critical to accommodate volume change and inhibit the risks of irreversible Li consumption by side reactions and Li dendrite growth for high-performance Li-metal anodes.read more
Citations
More filters
Journal ArticleDOI
A novel dual-protection interface based on gallium-lithium alloy enables dendrite-free lithium metal anodes
Ying Zhou,Jiaming Zhang,Kai Zhao,Yue Ma,Hongzhou Zhang,Dawei Song,Xixi Shi,Lianqi Zhang,Yi Ding +8 more
TL;DR: Li et al. as discussed by the authors proposed a dual-protected interface layer for Li metal by a facile in-situ ion exchange reaction that possesses long service life for effectively alleviating the extra consumption of active Li as well as homogenizing the Li deposition.
Journal ArticleDOI
Ni3N Nanocrystals Decorated Reduced Graphene Oxide with High Ionic Conductivity for Stable Lithium Metal Anode
TL;DR: In this paper, Li metal is the ultimate choice of anode material for high energy density rechargeable Li batteries, yet its practical application has been seriously hindered due to fast capacity decay.
Journal ArticleDOI
Thermo-managing and flame-retardant scaffolds suppressing dendritic growth and polysulfide shuttling toward high-safety lithium–sulfur batteries
Kaiping Zhu,Pan Xue,Guanjian Cheng,Menglei Wang,Han Wang,Chao Bao,Kai Zhang,Qiulong Li,Qiulong Li,Jingyu Sun,Shaohua Guo,Yagang Yao,Yagang Yao,Ching-Ping Wong +13 more
TL;DR: In this paper, a nonflammable 3D porous framework is constructed from functional boron nitride nanosheets supported on a scaffold of continuous functional carbon nanotubes (f-CNTs) as a bifunctional host for Li-S batteries.
Journal ArticleDOI
Conducting Polymer Paper-Derived Mesoporous 3D N-doped Carbon Current Collectors for Na and Li Metal Anodes: A Combined Experimental and Theoretical Study
Zhaohui Wang,Mingkai Li,Changqing Ruan,Chenjuan Liu,Chao Zhang,Chao Xu,Kristina Edström,Maria Strømme,Leif Nyholm +8 more
TL;DR: In this article, the manufacturing of a free-standing N-doped mesoporous carbon (CPPY) paper by straightforward carbonization of polypyrrole-coated nanocellulose paper is described.
Journal ArticleDOI
High Capacity Utilization of Li Metal Anodes by Application of Celgard Separator-Reinforced Ternary Polymer Electrolyte
Mengyi Zhang,Alicia Lei Gui,Wei Sun,Jens Becking,Olga Riedel,Xin He,Debbie Berghus,Vassilios Siozios,Dong Zhou,Tobias Placke,Martin Winter,Martin Winter,Peter Bieker +12 more
References
More filters
Journal ArticleDOI
Issues and challenges facing rechargeable lithium batteries
TL;DR: A brief historical review of the development of lithium-based rechargeable batteries is presented, ongoing research strategies are highlighted, and the challenges that remain regarding the synthesis, characterization, electrochemical performance and safety of these systems are discussed.
Journal ArticleDOI
Building better batteries
TL;DR: Researchers must find a sustainable way of providing the power their modern lifestyles demand to ensure the continued existence of clean energy sources.
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
Li-O2 and Li-S batteries with high energy storage.
Peter G. Bruce,Stefan Freunberger,Laurence J. Hardwick,Laurence J. Hardwick,Jean-Marie Tarascon +4 more
TL;DR: The energy that can be stored in Li-air and Li-S cells is compared with Li-ion; the operation of the cells is discussed, as are the significant hurdles that will have to be overcome if such batteries are to succeed.
Journal ArticleDOI
Lithium metal anodes for rechargeable batteries
Wu Xu,Jiulin Wang,Jiulin Wang,Fei Ding,Xilin Chen,Eduard Nasybulin,Yaohui Zhang,Yaohui Zhang,Ji-Guang Zhang +8 more
TL;DR: In this article, various factors that affect the morphology and Coulombic efficiency of Li metal anodes have been analyzed, and the results obtained by modelling of Li dendrite growth have also been reviewed.