Template-free synthesis of biomass-derived carbon coated Li4Ti5O12 microspheres as high performance anodes for lithium-ion batteries

Li, Keqiang; Yang, Zhilin; Sun, Yunong; Xu, Yisheng; Zhang, Huang; Ye, Pan; Zheng, Mengdan; Zhou, Nan; Wang, Di

doi:10.1016/j.apsusc.2018.08.047

Cited by 29 publications

(6 citation statements)

References 57 publications

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“…29−33 However, BMDCs also posed the problem of poor chemical conductance, leading to the use of binders, additives, and conductive agents during their fabrication. 34,35 Although integrating BMDCs with CC showed an impressive performance for SCs, 36,37 such a concept was yet to be used for electrode materials for LIBs. Thus, our asprepared π-CC/ECC@BMDC anode exhibited a high reversible areal capacity of 2.53 mAh cm −2 at 0. and an excellent rate capability of 0.36 mAh cm −2 at 3.0 mA cm −2 .…”

Section: ■ Introductionmentioning

confidence: 99%

“…Herein, we demonstrated that CC could exhibit excellent storage capability for LIBs through the formation of π–π stacking interaction by integrating electrochemically activated CC (CC/ACC) with biomass-derived activated carbon (BMDC) (denoted π-CC/ECC@BMDC). BMDCs are usually rich in heteroatoms and were considered as a promising cost-effective strategy due to its utilization of sustainable eco-friendly resources, being relatively simple, and involving low-cost processing. − However, BMDCs also posed the problem of poor chemical conductance, leading to the use of binders, additives, and conductive agents during their fabrication. , Although integrating BMDCs with CC showed an impressive performance for SCs, , such a concept was yet to be used for electrode materials for LIBs. Thus, our as-prepared π-CC/ECC@BMDC anode exhibited a high reversible areal capacity of 2.53 mAh cm –2 at 0.2 mA cm –2 and an excellent rate capability of 0.36 mAh cm –2 at 3.0 mA cm –2 .…”

Section: Introductionmentioning

confidence: 99%

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Advanced Tri-Layer Carbon Matrices with π–π Stacking Interaction for Binder-Free Lithium-Ion Storage

Huang

Xiong

Zhou

et al. 2021

ACS Appl. Mater. Interfaces

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Enabling materials with distinct features toward achieving high-performance energy storage devices is of huge importance but highly challenging. Commercial carbon cloth (CC), because of its appealing chemical and mechanical properties, has been proven to be an excellent conductive substrate for active electrode materials. However, its performance is notably poor when directly used as an electrode in energy storage, due to its low theoretical capacity and surface area. Herein, we successfully endow the CC with enhanced storage capacity via formation of a π−π stacking interaction by integrating electrochemically activated CC (denoted CC/ACC) with biomass-derived carbon (BMDC) (denoted π-CC/ECC@BMDC). The π-CC/ECC@BMDC electrode displays excellent storage performance with a high capacity of 2.53 mAh cm −2 under 0.2 mA cm −2 when used as anode material for lithium ion batteries (LIBs). Due to the induction energy, the negatively charged molecules of the CC/ACC functional groups interact with the BMDC during carbonization, creating the π−π stacking interaction. Based on first-principles calculations, the structural design of the tri-layer carbon enables the movement of electrons around the π−π stacking interaction, which significantly facilitates rapid transportation of electrons, creates threedimensional (3D) ion tunnels for fast transportation of ions, and improves the electrode's mechanical and electronic properties.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Advanced Tri-Layer Carbon Matrices with π–π Stacking Interaction for Binder-Free Lithium-Ion Storage

Huang

Xiong

Zhou

et al. 2021

ACS Appl. Mater. Interfaces

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“…The LTP 0. lithium-ion diffusion coefficient of the LTP 0.2 O sample shows a big improvement. The following formulas are used to get the lithium-ion diffusion coefficients [36][37][38].…”

Section: Resultsmentioning

confidence: 99%

Preparation and electrochemical performance of P⁵⁺-doped Li₄Ti₅O₁₂ as anode material for lithium-ion batteries

Yan

Zhang

et al. 2020

Nanotechnology

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Li4Ti5−xPxO12 (x = 0, 0.1, 0.2, 0.3, 0.4, 0.5) as an anode material was synthesized using a sol-gel method with Ti(C4H9O)4, Li2CO3, and NH4H2PO4, followed by a calcination treatment. The influences of P5+ doping on the crystal structure, phase composition, and morphology of Li4Ti5−xPxO12 were analyzed by x-ray diffraction and scanning electron microscopy. The electrochemical properties of Li4Ti5−xPxO12 were characterized using galvanostatic charge–discharge cycles, cyclic voltammetry, and alternating current impedance experiments. The results indicate that when x = 0.2, the Li4Ti4.8P0.2O12 sample exhibits the best initial discharge specific capacity of 132.1 mAh g−1 at first cycle, and the discharge specific capacity remains at 128.3 mAh g−1 after 500 cycles.

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“…The electrochemical findings indicate that both LTOs’ capacities are close to the theoretical value (175 mAh g −1 ) at room temperature and low rate (0.1 C), but that the capacity of the LTO with the smaller particle size and larger specific surface area is higher at LT and high rate. [ 188 ] The kinetics at LT can be further improved by compounding nano‐LTO with carbon‐based materials, such as amorphous carbon, [ 185,189,190 ] CNT, [ 191 ] or Ketjen black. [ 192 ] The enhanced kinetics is mainly due to the adequate wetting of the LTO/C nanocomposite with the electrolyte, the short Li‐ion migration distance, and the fast conductance of the carbon coating.…”

Section: Deteriorating Lt Performance: Causes and Solutionsmentioning

confidence: 99%

Advanced Strategies for Improving Lithium Storage Performance under Cryogenic Conditions

Zheng

Qian

Zhou

et al. 2023

Advanced Energy Materials

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storage technology, have pervaded practically all portable devices and electric vehicles in the 21st century, and it has been given considerable attention for increased roles in aerospace. [6] However, conventional LIBs have been reported to lose ≈88% of their room-temperature capacity (RTC) at −40 °C. [7] For instance, Panasonic 18650 batteries were tested in 2001 and found to have power and energy density of ≈800 W L −1 and ≈100 Wh L −1 at 25 °C, but only retained ≈1.25% and ≈5% at −40 °C. [8] Numerous approaches have been put forth in recent years to deal with this problem, including thermal management, electrode material optimization as well as electrolyte engineering (Figure 1). Pre-

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Template-free synthesis of biomass-derived carbon coated Li4Ti5O12 microspheres as high performance anodes for lithium-ion batteries

Cited by 29 publications

References 57 publications

Advanced Tri-Layer Carbon Matrices with π–π Stacking Interaction for Binder-Free Lithium-Ion Storage

Advanced Tri-Layer Carbon Matrices with π–π Stacking Interaction for Binder-Free Lithium-Ion Storage

Preparation and electrochemical performance of P⁵⁺-doped Li₄Ti₅O₁₂ as anode material for lithium-ion batteries

Advanced Strategies for Improving Lithium Storage Performance under Cryogenic Conditions

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Template-free synthesis of biomass-derived carbon coated Li4Ti5O12 microspheres as high performance anodes for lithium-ion batteries

Cited by 29 publications

References 57 publications

Advanced Tri-Layer Carbon Matrices with π–π Stacking Interaction for Binder-Free Lithium-Ion Storage

Advanced Tri-Layer Carbon Matrices with π–π Stacking Interaction for Binder-Free Lithium-Ion Storage

Preparation and electrochemical performance of P5+-doped Li4Ti5O12 as anode material for lithium-ion batteries

Advanced Strategies for Improving Lithium Storage Performance under Cryogenic Conditions

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Preparation and electrochemical performance of P⁵⁺-doped Li₄Ti₅O₁₂ as anode material for lithium-ion batteries