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  • Royal Society of Chemistry (RSC)  (5)
  • Guo, Bingshu  (5)
  • Li, Xing  (5)
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  • Royal Society of Chemistry (RSC)  (5)
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  • 1
    Online Resource
    Online Resource
    Constructing a VS 4 –V 2 CT x heterojunction interface to realize an ultra-long lifetime and high rate capability in sodium-ion batteries
    Royal Society of Chemistry (RSC) ; 2023
    In:  Inorganic Chemistry Frontiers Vol. 10, No. 14 ( 2023), p. 4087-4101
    Details
    In: Inorganic Chemistry Frontiers, Royal Society of Chemistry (RSC), Vol. 10, No. 14 ( 2023), p. 4087-4101
    Abstract: The development of high-energy-density Na-ion batteries (SIBs) is hindered by the lack of a high-capacity anode with fast Na-ion reaction kinetics due to the large Na + radius and slow Na + diffusion kinetics. Herein, a high specific capacity anode is designed by constructing a double vanadium-based compound (VS 4 –V 2 CT x ) heterostructure composite. The strong rivet structure bridged according to the S–V–C bonding interaction between VS 4 and V 2 CT x unblocks the three-dimensional channel of electron transport and synergistically promotes ion diffusion and charge transport. In addition, the electrochemical reaction kinetics can be enhanced by adjusting the ratio of the vanadium valence state to facilitate electrocatalytic activity at the VS 4 –V 2 CT x heterojunction interface. When used as a SIB anode, the VS 4 –V 2 CT x composite exhibits excellent ultra-long cycling performance, with a specific discharge capacity of 322 mA h g −1 after 4000 cycles at a large current density of 10 A g −1 . All-vanadium SIBs (Na 3 V 2 (PO 4 ) 3 @C//VS 4 –V 2 CT x ) are also assembled and showed excellent sodium storage performance with a high reversible capacity of 234 mA h g −1 at 3 A g −1 , indicating broad application prospects for vanadium-based sodium storage devices.
    Type of Medium: Online Resource
    ISSN: 2052-1553
    URL: Article
    DOI: 10.1039/D3QI00712J
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2023
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  • 2
    Online Resource
    Online Resource
    Facilitating the redox conversion of CoSe 2 nanorods by Ti 3 C 2 T x to improve the electrode durability as anodes for sodium-ion batteries
    Royal Society of Chemistry (RSC) ; 2021
    In:  Sustainable Energy & Fuels Vol. 5, No. 24 ( 2021), p. 6381-6391
    Details
    In: Sustainable Energy & Fuels, Royal Society of Chemistry (RSC), Vol. 5, No. 24 ( 2021), p. 6381-6391
    Abstract: Nanostructured metal selenides based on conversion reactions are promising anode materials for sodium-ion batteries (SIBs). However, the repeat structural degradation accompanied by the detrimental intermediate of sodium selenides (Na x Se) leads them to suffer from continuous capacity decaying and under-voltage failure. In this work, CoSe 2 is chosen as a representative by the introduction of a polar Ti 3 C 2 T x matrix to alleviate the performance deterioration caused by the crystal structure evolution. CoSe 2 nanorods are in situ grown on the Ti 3 C 2 T x (CoSe 2 /Ti 3 C 2 T x ) surface by a simple one-step hydrothermal reaction during the reduction environment. A tight chemical bonding is formed between CoSe 2 and Ti 3 C 2 T x by oxygen bridging, which maintains the stable charge and ion transport during cycling. Meanwhile, Ti 3 C 2 T x facilitates copper coming from the collector being diffused in the electrode, and is involved in the electrochemical reaction in an ether-based electrolyte, resulting in CoSe 2 being partially converted to Cu 2− x Se after long cycles. Synchronously, Ti 3 C 2 T x improves the mutual transformation of Na x Se ↔ Na 2 Se during the intercalation/de-intercalation of metal selenides. Therefore, via optimizing the content of Ti 3 C 2 T x , the CoSe 2 /Ti 3 C 2 T x -10 composite obtains excellent long cycle stability, delivering a specific capacity of 343 mA h g −1 at 0.3 A g −1 after 1200 cycles with a capacity retention of 98%. Even at 10.0 A g −1 , CoSe 2 /Ti 3 C 2 T x -10 exerts about 200 mA h g −1 initial capacity, and remains at 140 mA h g −1 after 1400 cycles. The strategy of introducing a polar matrix to improve the long cycling stability of the metal selenide provides a new opportunity for the development of new anode materials for SIBs.
    Type of Medium: Online Resource
    ISSN: 2398-4902
    URL: Article
    DOI: 10.1039/D1SE01655E
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2021
    detail.hit.zdb_id: 2882651-6
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  • 3
    Online Resource
    Online Resource
    Insight into the microscopic morphology and electrochemical performance correlation mechanism upon calcination at different temperatures of a novel spherical cobalt-free 0.6Li 2 MnO 3 ·0.4Li[Fe 1/3 Ni 1/3 Mn 1/3 ]O 2 cathode
    Royal Society of Chemistry (RSC) ; 2021
    In:  Sustainable Energy & Fuels Vol. 5, No. 11 ( 2021), p. 2934-2942
    Details
    In: Sustainable Energy & Fuels, Royal Society of Chemistry (RSC), Vol. 5, No. 11 ( 2021), p. 2934-2942
    Type of Medium: Online Resource
    ISSN: 2398-4902
    URL: Article
    DOI: 10.1039/D1SE00312G
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2021
    detail.hit.zdb_id: 2882651-6
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  • 4
    Online Resource
    Online Resource
    Gradient valence-distributed vanadium oxygen hydrate hybrid induces high performance aqueous zinc-ion batteries
    Royal Society of Chemistry (RSC) ; 2021
    In:  Materials Chemistry Frontiers Vol. 5, No. 20 ( 2021), p. 7518-7528
    Details
    In: Materials Chemistry Frontiers, Royal Society of Chemistry (RSC), Vol. 5, No. 20 ( 2021), p. 7518-7528
    Abstract: Gradient valence-distributed vanadium oxygen hydrate hybrid (G-VOH) nanowires are designed by one-step hydrothermal synthesis for aqueous zinc-ion batteries. It is mainly constructed by superficial NH 4 + -intercalated VOH ((NH 4 ) 2 V 10 O 25 ·8H 2 O, named as NVOH) and inner deeper vanadium reduction VOH (V 3 O 7 ·H 2 O, named as VOH). In the unique nanostructure, both NVOH and VOH are active matrices involved in the Zn 2+ electrochemical reaction. Moreover, the outer NVOH functions as a Zn 2+ transport framework to provide fast Zn 2+ transport capability for the inner VOH. Additionally, the gradient vanadium valence distribution in hybrids enhances the vanadium multi-valence redox kinetics, resulting in significant improvement for the Zn 2+ storage capacity. Meanwhile, NVOH also functions as a framework support to suppress the inner VOH crystal structure conversion during the charge/discharge process, facilitating its electrochemical stability. Thus, the G-VOH nanowires obtain a high specific capacity of 434 mA h g −1 at 0.1 A g −1 , as well as long cycling stability with 86% capacity retention at 2 A g −1 after 1500 cycles. Moreover, the assembled quasi-solid-state G-VOH||Zn batteries achieve a superior specific capacity of 241 mA h g −1 at 1 A g −1 with a capacity retention of 74% after 500 cycles. The strategy of the preparation of gradient valence-distributed vanadium oxygen hydrate provides a new idea for the development of cathode materials for aqueous zinc-ion batteries.
    Type of Medium: Online Resource
    ISSN: 2052-1537
    URL: Article
    DOI: 10.1039/D1QM00703C
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2021
    detail.hit.zdb_id: 2867881-3
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  • 5
    Online Resource
    Online Resource
    New nonflammable tributyl phosphate based localized high concentration electrolytes for lithium metal batteries
    Royal Society of Chemistry (RSC) ; 2022
    In:  Sustainable Energy & Fuels Vol. 6, No. 9 ( 2022), p. 2198-2206
    Details
    In: Sustainable Energy & Fuels, Royal Society of Chemistry (RSC), Vol. 6, No. 9 ( 2022), p. 2198-2206
    Abstract: Lithium metal is one of the most promising anodes for next-generation lithium batteries. However, dendrites caused by uneven deposition can pierce the separator resulting in a safety hazard. Using nonflammable phosphates to replace conventional flammable carbonates in electrolytes is an effective solution. Here, we used tributyl phosphate (TBP), which is more thermally stable than widely studied trimethyl phosphate (TMP) and triethyl phosphate (TEP), as the main solvent for the first time to construct a fire-retardant localized high concentration electrolyte (LHCE). The results demonstrate that by adjusting the concentration of lithium bis(fluorosulfonyl)imide (LiFSI) and introducing 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether (TTE), it eventually facilitated the formation of a LiF-rich solid electrolyte interphase (SEI) and uniform lithium deposition morphology, and a LiF-rich cathode electrolyte interphase (CEI), which effectively reduced the decomposition of the electrolyte. The viscosity and conductivity of the rationally designed LHCE were 25.5 mPa s and 257 μS cm −1 , respectively. The average coulombic efficiency (CE) of the Li‖Cu is 97.3%. The Li‖LiFePO 4 full cell with a limited lithium anode (50 μm) also exhibits a capacity retention of 84.6% after 400 cycles at C/2 charge and discharge. This work proposes a new solvent choice for developing high safety electrolyte systems.
    Type of Medium: Online Resource
    ISSN: 2398-4902
    URL: Article
    DOI: 10.1039/D2SE00231K
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2022
    detail.hit.zdb_id: 2882651-6
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