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Yi, Yuyang; Ma, Hao; Lian, Xueyu; Mei, Qingqing; Zeng, Zhihan; Zhao, Yu; Lu, Chen; Zhao, Wenjing; Guo, Wei; Liu, Zhongfan; Sun, Jingyu

doi:10.1002/inf2.12239

Cited by 2 publications

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“…Typically, b values of 0.5 and 1.0 denote ideal diffusion-controlled processes and capacitance-controlled processes, respectively. [51,52] Figure S19b,f (Supporting Information) displays the connection between log(i) and log(v) for LMMs and LMPs anode. The b values of the LMMs anode from peak 1 to peak 4 are 0.72, 0.69, 0.96, and 0.89, respectively, indicating that the capacitive process dominates the storage of lithium, thus producing outstanding rate capabilities.…”

Section: Resultsmentioning

confidence: 99%

A Room‐Temperature Self‐Healing Liquid Metal‐Infilled Microcapsule Driven by Coaxial Flow Focusing for High‐Performance Lithium‐Ion Battery Anode

Lin,

Chen,

Yang

et al. 2023

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Liquid metals have attracted a lot of attention as self‐healing materials in many fields. However, their applications in secondary batteries are challenged by electrode failure and side reactions due to the drastic volume changes during the “liquid‐solid‐liquid” transition. Herein, a simple encapsulated, mass‐producible method is developed to prepare room‐temperature liquid metal‐infilled microcapsules (LMMs) with highly conductive carbon shells as anodes for lithium‐ion batteries. Due to the reasonably designed voids in the microcapsule, the liquid metal particles (LMPs) can expand freely without damaging the electrode structure. The LMMs‐based anodes exhibit superior capacity of rete‐performance and ultra‐long cycling stability remaining 413 mAh g−1 after 5000 cycles at 5.0 A g−1. Ex situ X‐ray powder diffraction (XRD) patterns and electrochemical impedance spectroscopy (EIS) reveal that the LMMs anode displays a stable alloying/de‐alloying mechanism. DFT calculations validate the electronic structure and stability of the room‐temperature LMMs system. These findings will bring some new opportunities to develop high‐performance battery systems.

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Section: Resultsmentioning

confidence: 99%

A Room‐Temperature Self‐Healing Liquid Metal‐Infilled Microcapsule Driven by Coaxial Flow Focusing for High‐Performance Lithium‐Ion Battery Anode

Lin,

Chen,

Yang

et al. 2023

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“…As for the production of the anode candidate, saturated NaCl salt solution with uniformly distributed zeolitic imidazolate framework-8 (ZIF-8) crystals was successively recrystallized, dried, and carbonized. [39] Note that the NaCl crystal, functioning as the reactor of ZIF-8 decomposition at elevated temperature, suppresses the loss of intermediate species and accordingly results in the formation of graphitic-like carbon nanosheets wrapped over the surface of carbon polyhedron (M-NC). [40][41][42] Meanwhile, ANC was obtained via KOH activation of the bare ZIF-8-derived NC material.…”

Section: Resultsmentioning

confidence: 99%

Homologous Nitrogen‐Doped Hierarchical Carbon Architectures Enabling Compatible Anode and Cathode for Potassium‐Ion Hybrid Capacitors

Zeng

Lian

et al. 2022

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practical application of PIHCs is greatly impeded by the sluggish kinetics of potassiation/depotassiation within electrodes due to the large ionic size of K + . Moreover, the imbalance of charge storage mechanism between the anode and cathode would inevitably affect the cycle stability of PIHCs. Exploring compatible anode and cathode materials is still an unmet challenge.To date, many types of anode candidates, such as MoSe 2 , [19] FeSe 2 /N-C, [20] K 2 Ti 6 O 13 , [21] NbSe 2 , [22] Ca 0.5 Ti 2 (PO 4 ) 3 @C [23] and carbon-based architectures have been tested in PIHCs. [24][25][26][27][28][29][30][31][32][33] Typically, inexpensive carbonaceous materials have been envisioned as one of the ideal candidates owing to their conspicuous cycling stability, high electrical conductivity, and environmental friendliness. Nevertheless, it has remained a tough mission to deal with their low specific capacity and volume expansion issue. Two optimization strategies have therefore been proposed to boost the capacity and cyclic stability: i) Heteroatom (N, B, P, and S) incorporation to create active sites for the potassium adsorption and enlarge the interlayer spacing of the carbon skeleton for accommodating ions; ii) Nanostructure design to alleviate the volume change and promote the contact between electrolyte and electrode material. As for the cathode, commercial activated carbon (AC) is generally employed, normally delivering limited capacity values and inferior electrochemical performance due to the incompatibility with the anode. In this regard, homologous strategy with material simplicity and cost-effectiveness affords an effective avenue to offset the kinetic imbalance between anode/cathode and improve the overall energy density of PIHCs. For example, Xu et al. synthesized S-doped multi-channel carbon fiber as an anode and activated multi-channel carbon fiber as a cathode by electrospinning. Benefiting from the advantage of a single precursor, the thus-constructed PIHCs exhibited a favorable cycling stability (a 90% capacity retention over 7000 cycles). [29] Oiu et al. used cucurbit uril as the homologous precursor to respectively derive graphene-confined nitrogen-doped carbon as the anode and KOH-activated nitrogen-doped carbon as the cathode, accordingly harvesting a high energy/power density output (172 Wh kg −1 /22 kW kg −1 ) for PIHCs. [31] Although the homology strategy has improved the performance of PIHCs, a large number of side reactions are still inevitable because of the high activity of potassium. Meanwhile, ionic conductivity is a Potassium-ion hybrid capacitors (PIHCs) have been considered as an emerging device to render grid-scale energy storage. Nevertheless, the sluggish kinetics at the anode side and limited capacity output at the cathode side remain daunting challenges for the overall performances of PIHCs. Herein, an exquisite "homologous strategy" to devise multi-dimensional N-doped carbon nanopolyhedron@nanosheet anode and activated N-doped hierarchical carbon cathode targeting high-performance PI...

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Cited by 2 publications

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A Room‐Temperature Self‐Healing Liquid Metal‐Infilled Microcapsule Driven by Coaxial Flow Focusing for High‐Performance Lithium‐Ion Battery Anode

A Room‐Temperature Self‐Healing Liquid Metal‐Infilled Microcapsule Driven by Coaxial Flow Focusing for High‐Performance Lithium‐Ion Battery Anode

Homologous Nitrogen‐Doped Hierarchical Carbon Architectures Enabling Compatible Anode and Cathode for Potassium‐Ion Hybrid Capacitors

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