Carbon free silicon/polyaniline hybrid anodes with 3D conductive structures for superior lithium-ion batteries

Zhou, Jun; Zhou, Ling; Yang, Lishan; Chen, Tao; Li, Jiaqi; Pan, Hao; Yang, Yang; Wang, Zhongchang

doi:10.1039/c9cc09132g

Cited by 35 publications

(31 citation statements)

References 26 publications

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“…Recently, selective dealloying is considered as a promising method for manufacturing micro-porous silicon. ( Luo et al, 2020 ; Zhou et al, 2020 ) This method employs cheap silicon-metal alloys (such as Si-Al alloys etc.) as raw materials, and porous silicon materials are obtained by removing metal elements in the alloys.…”

Section: Synthesis Of Porous Silicon-based Materialsmentioning

confidence: 99%

Advances of Synthesis Methods for Porous Silicon-Based Anode Materials

Zhang

Zhu

et al. 2022

Front. Chem.

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Silicon (Si)-based anode materials have been the promising candidates to replace commercial graphite, however, there are challenges in the practical applications of Si-based anode materials, including large volume expansion during Li+ insertion/deinsertion and low intrinsic conductivity. To address these problems existed for applications, nanostructured silicon materials, especially Si-based materials with three-dimensional (3D) porous structures have received extensive attention due to their unique advantages in accommodating volume expansion, transportation of lithium-ions, and convenient processing. In this review, we mainly summarize different synthesis methods of porous Si-based materials, including template-etching methods and self-assembly methods. Analysis of the strengths and shortages of the different methods is also provided. The morphology evolution and electrochemical effects of the porous structures on Si-based anodes of different methods are highlighted.

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Section: Synthesis Of Porous Silicon-based Materialsmentioning

confidence: 99%

Advances of Synthesis Methods for Porous Silicon-Based Anode Materials

Zhang

Zhu

et al. 2022

Front. Chem.

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“…Various approaches have been used to mitigate the drawbacks of Si-based materials, such as construction of flexible shells, integration of elastic binders, and doping of conductive atoms. [8][9][10][11][12][13] Among them, construction of flexible shells is one of the most efficient strategies to modify raw Si-based materials, owing to the capability of restraining the volume change and preventing electrolyte corrosion. Many studies have shown that the SiO x shell seems to be an essential choice due to its flexibility and electrochemical activity; 14 moreover, use of amorphous carbon coatings 15,16 is one of the most promising approaches to modify the shell of Si particles.…”

Section: Introductionmentioning

confidence: 99%

“…Various approaches have been used to mitigate the drawbacks of Si‐based materials, such as construction of flexible shells, integration of elastic binders, and doping of conductive atoms 8–13 . Among them, construction of flexible shells is one of the most efficient strategies to modify raw Si‐based materials, owing to the capability of restraining the volume change and preventing electrolyte corrosion.…”

Section: Introductionmentioning

confidence: 99%

Sustainable silicon anodes facilitated via a double‐layer interface engineering: Inner SiO_x combined with outer nitrogen and boron co‐doped carbon

et al. 2022

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Silicon-based (Si) materials are promising anodes for lithium-ion batteries (LIBs) because of their ultrahigh theoretical capacity of 4200 mA h g −1 .However, commercial applications of Si anodes have been hindered by their drastic volume variation (∼300%) and low electrical conductivity. Here, to tackle the drawbacks, a hierarchical Si anode with double-layer coatings of a SiO x inner layer and a nitrogen (N), boron (B) co-doped carbon (C-NB) outer layer is elaborately designed by copyrolysis of Si-OH structures and a H 3 BO 3doped polyaniline polymer on the Si surface. Compared with the pristine Si anodes (7 mA h g −1 at 0.5 A g −1 after 340 cycles and 340 mA h g −1 at 5 A g −1 ), the modified Si-based materials (Si@SiO

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“…Therefore, excellent anode material requires high specific capacity and cyclic stability. At present, ideal anode materials mainly include carbon, metal alloys and compounds 12‐17 . And it is the focus of current research to design anode active materials with novel structure and excellent performances.…”

Section: Introductionmentioning

confidence: 99%

“…At present, ideal anode materials mainly include carbon, metal alloys and compounds. [12][13][14][15][16][17] And it is the focus of current research to design anode active materials with novel structure and excellent performances. Hou et al 18 presented hollow TiO 2 sub-microspheres synthesized via a facile one-step, low temperature hydrothermal strategy.…”

Section: Introductionmentioning

confidence: 99%

Cobalt‐based metal organic framework ( Co‐MOFs )/graphene oxide composites as high‐performance anode active materials for lithium‐ion batteries

et al. 2020

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Summary Conventional graphene oxide cannot be directly used as an anode active material for lithium‐ion batteries owing to its surface state and lithium‐ion steric hindrance effect. To solve these problems, Co‐MOFs/graphene oxide composite active materials are synthesized by a facile solvothermal method. Through X‐ray diffraction and Raman spectrum analysis, Co‐MOFs and graphene oxide can interact with each other in the composite material and the structure, defect concentrations and graphitization degree of graphene oxide have been affected to a certain impact. Scanning electron microscopy observes that when the mass ratio of Co‐MOFs and graphene oxide is 1:1, this composite material shows more ideal and ordinal layered morphology. As anode active materials, they display electrochemical reaction characteristics of typical soft carbon and create abundant active sites with wide energy distribution and ameliorate the steric effect of graphene oxide on lithium ion. It also can be illustrated that the initial discharge specific capacities can achieve to 873.13, 795.41, 694.91 and 569.50 mAh·g−1 at 100, 200, 300 and 500 mA·g−1 current densities. After 500 cycles, capacity retention rates are 79.28%, 76.82%, 87.35% and 96.82% at 100, 200, 500 and 1000 mA·g−1 current densities. Electrochemical mechanism analysis shows that this Co‐MOFs/graphene oxide composite active material shows a similar electrochemical reaction process of graphene oxide and Co‐MOFs mainly play the role of optimizing the surface structure of graphene oxide and also supply a little capacity due to high specific capacity. Highlights Co‐MOFs/graphene oxide composites are synthesized by a facile solvothermal method. Co‐MOFs mainly play the role of optimizing the surface structure of graphene oxide. Anode using this composite material has a very high initial discharge specific capacity. This composite active material can stably charge and discharge for 500 cycles.

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Carbon free silicon/polyaniline hybrid anodes with 3D conductive structures for superior lithium-ion batteries

Abstract: We design a carbon-free Si/polyaniline hybrid anode composed of porous Si dendrites and oxalic acid doped polyaniline coatings.

Cited by 35 publications

References 26 publications

Advances of Synthesis Methods for Porous Silicon-Based Anode Materials

Advances of Synthesis Methods for Porous Silicon-Based Anode Materials

Sustainable silicon anodes facilitated via a double‐layer interface engineering: Inner SiO_x combined with outer nitrogen and boron co‐doped carbon

Cobalt‐based metal organic framework ( Co‐MOFs )/graphene oxide composites as high‐performance anode active materials for lithium‐ion batteries

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Carbon free silicon/polyaniline hybrid anodes with 3D conductive structures for superior lithium-ion batteries

Abstract: We design a carbon-free Si/polyaniline hybrid anode composed of porous Si dendrites and oxalic acid doped polyaniline coatings.

Cited by 35 publications

References 26 publications

Advances of Synthesis Methods for Porous Silicon-Based Anode Materials

Advances of Synthesis Methods for Porous Silicon-Based Anode Materials

Sustainable silicon anodes facilitated via a double‐layer interface engineering: Inner SiOx combined with outer nitrogen and boron co‐doped carbon

Cobalt‐based metal organic framework ( Co‐MOFs )/graphene oxide composites as high‐performance anode active materials for lithium‐ion batteries

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Sustainable silicon anodes facilitated via a double‐layer interface engineering: Inner SiO_x combined with outer nitrogen and boron co‐doped carbon