Doping sites modulation of T-Nb2O5 to achieve ultrafast lithium storage

Ding, Xin; Huang, Huiying; Huang, Qianhui; Hu, Benrui; Li, Xiaokang; Ma, Xiangdong; Xiong, Xunhui

doi:10.1016/j.jechem.2022.10.049

Cited by 40 publications

(13 citation statements)

References 55 publications

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“…With the rapid development of the burgeoning market of electric vehicles, the energy density of present lithium-ion batteries has been unable to meet the requirement of long driving range, and the exploration of high energy density LIBs has become an urgent need. However, the mainstream commercial anode electrode materials of graphite suffer from a theoretical specific capacity of 372 mAh g −1 , which limits the further improvement of the energy density of LIBs ( Choi et al, 2012 ; Ding et al, 2022a ). Therefore, developing high-capacity anode electrode materials becomes the essential strategy to achieve high energy density LIBs ( Shen et al, 2018 ; Cui et al, 2020 ; Ding et al, 2022b ; Zhao et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

SnS@C nanoparticles anchored on graphene oxide as high-performance anode materials for lithium-ion batteries

Mei

Han

et al. 2023

Front. Chem.

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Tin (II) sulfide (SnS) has been regarded as an attractive anode material for lithium-ion batteries (LIBs) owing to its high theoretical capacity. However, sulfide undergoes significant volume change during lithiation/delithiation, leading to rapid capacity degradation, which severely hinders its further practical application in lithium-ion batteries. Here, we report a simple and effective method for the synthesis of SnS@C/G composites, where SnS@C nanoparticles are strongly coupled onto the graphene oxide nanosheets through dopamine-derived carbon species. In such a designed architecture, the SnS@C/G composites show various advantages including buffering the volume expansion of Sn, suppressing the coarsening of Sn, and dissolving Li2S during the cyclic lithiation/delithiation process by graphene oxide and N-doped carbon. As a result, the SnS@C/G composite exhibits outstanding rate performance as an anode material for lithium-ion batteries with a capacity of up to 434 mAh g−1 at a current density of 5.0 A g−1 and excellent cycle stability with a capacity retention of 839 mAh g−1 at 1.0 A g−1 after 450 cycles.

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Section: Introductionmentioning

confidence: 99%

SnS@C nanoparticles anchored on graphene oxide as high-performance anode materials for lithium-ion batteries

Mei

Han

et al. 2023

Front. Chem.

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“…It is noteworthy that the shape of redox peaks of the Cu 2+ -doped material is quite different from that of Dop0 for either peak position or intensity. 41 The CV analysis results are listed in Table S4. The CV curve of Dop0 is close to the rectangle, which is the typical feature of orthogonal T-Nb 2 O 5 .…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Insight into the Effect of Cu²⁺ Doping on Cu_xNb_2–xO_5–3/2x for High-Power Lithium-Ion Batteries

Su,

Li,

Long

et al. 2023

ACS Sustainable Chem. Eng.

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“…Nevertheless, the doping of Mn would lead to extra Li/Ni cation mixing, which is detrimental to the transport of Li + . In a theoretical study of doping selection in Li 1– x NiO 2 , Cheng et al revealed that W, Sb, Ta, and Ti show promising surface oxygen retention ability to stabilize the interfacial structure of the doped LiNiO 2 materials because of their strong metal–oxygen bonds and powerful surface segregation. − This was confirmed by Du et al in their study of the Mg/Ti dual-doped LiNiO 2 ; Ti was found to be enriched in the surface region to inhibit the surface oxygen loss, while Mg doped in bulk may mitigate the undesired phase transitions . The Mg 2+ and Ti 4+ cations codoped in the Ni sites would endow the material with excellent cycling stability and rate capability with a discharge capacity of 208 mAh g –1 at 0.1 C .…”

Section: Introductionmentioning

confidence: 90%

Simultaneous Bulk Doping and Surface Coating of Sn to Boost the Electrochemical Performance of LiNiO₂

Wen

Zhou

et al. 2023

ACS Appl. Energy Mater.

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Co-free, nickel-rich layered materials are crucial for the cost reduction of lithium ion batteries to meet the requirement of the electric vehicle market. However, the strategies to synthesize the practically applicable Co-free, nickel-rich materials are still challenging. Herein, we report a strategy for fabrication of the materials by Sn modification of LiNiO 2 . Under high temperature conditions, bulk doping of the Sn 4+ ions and surface coating of Li 2 SnO 3 can be simultaneously achieved. Due to the presence of the strong Sn−O bond and chemically inert property of the coating layer, the structure reversibility, integrity of the secondary particles, and interfacial stability of the Sn-modified materials during charge/discharge cycling can be greatly enhanced relative to those of the counterpart pristine LiNiO 2 . The optimized material, LiNi 0.97 Sn 0.03 O 2 , can deliver a discharge capacity of 216.76 mAh g −1 at 0.1 C with a capacity retention of 80.61% after 250 cycles at 0.5 C. In addition, the enlargement of the crystal lattice by Sn doping is also beneficial to the rate capability of the materials, providing a discharge capacity of 148.06 mAh g −1 at 5 C. Thus, the simultaneous dual functionalization of Sn to LiNiO 2 could be a practicable approach to gaining the Co-free, nickel-rich materials.

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Doping sites modulation of T-Nb2O5 to achieve ultrafast lithium storage

Cited by 40 publications

References 55 publications

SnS@C nanoparticles anchored on graphene oxide as high-performance anode materials for lithium-ion batteries

SnS@C nanoparticles anchored on graphene oxide as high-performance anode materials for lithium-ion batteries

Insight into the Effect of Cu²⁺ Doping on Cu_xNb_2–xO_5–3/2x for High-Power Lithium-Ion Batteries

Simultaneous Bulk Doping and Surface Coating of Sn to Boost the Electrochemical Performance of LiNiO₂

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Doping sites modulation of T-Nb2O5 to achieve ultrafast lithium storage

Cited by 40 publications

References 55 publications

SnS@C nanoparticles anchored on graphene oxide as high-performance anode materials for lithium-ion batteries

SnS@C nanoparticles anchored on graphene oxide as high-performance anode materials for lithium-ion batteries

Insight into the Effect of Cu2+ Doping on CuxNb2–xO5–3/2x for High-Power Lithium-Ion Batteries

Simultaneous Bulk Doping and Surface Coating of Sn to Boost the Electrochemical Performance of LiNiO2

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Insight into the Effect of Cu²⁺ Doping on Cu_xNb_2–xO_5–3/2x for High-Power Lithium-Ion Batteries

Simultaneous Bulk Doping and Surface Coating of Sn to Boost the Electrochemical Performance of LiNiO₂