Ultrafast and Durable Li/Na storage by an Iron Selenide Anode Using an Elastic Hierarchical Structure

Inorganic Chemistry Frontiers ◽

10.1039/d1qi00413a ◽

2021 ◽

Author(s):

Peng Jing ◽

Qiong Wang ◽

Chunxiang Xian ◽

Liyu Du ◽

Yin Zhang ◽

...

Keyword(s):

Hierarchical Structure ◽

Carbon Matrix ◽

Iron Selenide ◽

Hierarchical Framework ◽

Unique Structure ◽

Graphene Coating ◽

Elastic Characteristics

FeSe nanoparticles were encapsulated into polycystic carbon matrix (FeSe/C) followed by graphene coating (GF@FeSe/C) via a facile strategy, constructing a hierarchical framework with porous and elastic characteristics. This unique structure...

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Tuning Metallic Co0.85Se Quantum Dots/Carbon Hollow Polyhedrons with Tertiary Hierarchical Structure for High-Performance Potassium Ion Batteries

Nano-Micro Letters ◽

10.1007/s40820-019-0326-5 ◽

2019 ◽

Vol 11 (1) ◽

Cited By ~ 8

Author(s):

Zhiwei Liu ◽

Kun Han ◽

Ping Li ◽

Wei Wang ◽

Donglin He ◽

...

Keyword(s):

Quantum Dots ◽

Hierarchical Structure ◽

Structural Integrity ◽

Electronic Conductivity ◽

Lithium Ion ◽

Carbon Matrix ◽

Carbon Composite ◽

Potassium Ion ◽

Potential Candidate ◽

Cobalt Selenide

Abstract Potassium-ion batteries (KIBs) are a potential candidate to lithium-ion batteries (LIBs) but possess unsatisfactory capacity and rate properties. Herein, the metallic cobalt selenide quantum dots (Co0.85Se-QDs) encapsulated in mesoporous carbon matrix were designed via a direct hydrothermal method. Specifically, the cobalt selenide/carbon composite (Co0.85Se-QDs/C) possesses tertiary hierarchical structure, which is the primary quantum dots, the secondary petals flake, and the tertiary hollow micropolyhedron framework. Co0.85Se-QDs are homogenously embedded into the carbon petals flake, which constitute the hollow polyhedral framework. This unique structure can take the advantages of both nanoscale and microscale features: Co0.85Se-QDs can expand in a multidimensional and ductile carbon matrix and reduce the K-intercalation stress in particle dimensions; the micropetals can restrain the agglomeration of active materials and promote the transportation of potassium ion and electron. In addition, the hollow carbon framework buffers volume expansion, maintains the structural integrity, and increases the electronic conductivity. Benefiting from this tertiary hierarchical structure, outstanding K-storage performance (402 mAh g−1 after 100 cycles at 50 mA g−1) is obtained when Co0.85Se-QDs/C is used as KIBs anode. More importantly, the selenization process in this work is newly reported and can be generally extended to prepare other quantum dots encapsulated in edge-limited frameworks for excellent energy storage.

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Microorganism-moulded pomegranate-like Na3V2(PO4)3/C nanocomposite for advanced sodium-ion batteries

Journal of Materials Chemistry A ◽

10.1039/c7ta02165h ◽

2017 ◽

Vol 5 (20) ◽

pp. 9982-9990 ◽

Cited By ~ 26

Author(s):

Qizhen Zhu ◽

Xiaqing Chang ◽

Ning Sun ◽

Huan Liu ◽

Renjie Chen ◽

...

Keyword(s):

Cathode Material ◽

Hierarchical Structure ◽

Carbon Matrix ◽

Cycling Stability ◽

Sodium Ion ◽

Sodium Ion Battery ◽

Sodium Ion Batteries ◽

Rate Performance

Microorganism-moulded pomegranate-like Na3V2(PO4)3/C composites show a hierarchical structure with a N-/P-doped carbon matrix, resulting in a sodium ion battery cathode material with a good rate performance and an outstanding long-term cycling stability.

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In situ incorporation of FeS nanoparticles/carbon nanosheets composite with an interconnected porous structure as a high-performance anode for lithium ion batteries

Journal of Materials Chemistry A ◽

10.1039/c5ta09138a ◽

2016 ◽

Vol 4 (10) ◽

pp. 3697-3703 ◽

Cited By ~ 100

Author(s):

Yuanxian Xu ◽

Wenyue Li ◽

Fan Zhang ◽

Xiaolong Zhang ◽

Wenjun Zhang ◽

...

Keyword(s):

Porous Structure ◽

Lithium Ion Batteries ◽

Lithium Ion Battery ◽

Porous Carbon ◽

High Performance ◽

Lithium Ion ◽

Carbon Matrix ◽

Carbon Nanosheets ◽

Unique Structure

FeS nanoparticles embedded in porous carbon matrix with unique structure was successfully synthesized and shows impressive lithium ion battery performances.

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Relationships between hierarchical structure and properties in macromolecular systems

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100126950 ◽

1987 ◽

Vol 45 ◽

pp. 440-443

Author(s):

E. Baer

Keyword(s):

Uniaxial Tension ◽

Hierarchical Structure ◽

Inorganic Material ◽

Hierarchical Structures ◽

Bone Collagen ◽

Structure And Properties ◽

Connective Tissues ◽

Scale Level ◽

Fibrous Protein ◽

Macromolecular Systems

The most advanced macromolecular materials are found in plants and animals, and certainly the connective tissues in mammals are amongst the most advanced macromolecular composites known to mankind. The efficient use of collagen, a fibrous protein, in the design of both soft and hard connective tissues is worthy of comment. Very crudely, in bone collagen serves as a highly efficient binder for the inorganic hydroxyappatite which stiffens the structure. The interactions between the organic fiber of collagen and the inorganic material seem to occur at the nano (scale) level of organization. Epitatic crystallization of the inorganic phase on the fibers has been reported to give a highly anisotropic, stress responsive, structure. Soft connective tissues also have sophisticated oriented hierarchical structures. The collagen fibers are “glued” together by a highly hydrated gel-like proteoglycan matrix. One of the simplest structures of this type is tendon which functions primarily in uniaxial tension as a reinforced elastomeric cable between muscle and bone.

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