Unveiling the role of lithiophilic sites denseness in regulating lithium ion deposition

Wu, Tianlai; Wang, Yongyin; Zhang, Weicai; Lu, Kai-Xin; Tan, Jieyin; Zheng, Mingtao; Xiao, Yong; Liu, Yingliang; Liang, Yeru

doi:10.1016/j.jechem.2022.03.039

Cited by 12 publications

(5 citation statements)

References 62 publications

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“…31 As is well known, the introduction of lithiophilic sites is an effective way to achieve uniform Li-ion deposition and to inhibit the formation of Li dendrites. 32 To verify the function of SiO 2 on protected Li in promoting uniform deposition of Li, constant current polarization tests of pristine Li and protected Li were carried out at high current densities (Fig. 4d and e and Fig.…”

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confidence: 99%

Deciphering the dual functions of a silicon dioxide protective layer in regulating lithium-ion deposition

Wu¹,

Zhang²,

Cai³

et al. 2022

Mater. Adv.

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confidence: 99%

Deciphering the dual functions of a silicon dioxide protective layer in regulating lithium-ion deposition

Wu¹,

Zhang²,

Cai³

et al. 2022

Mater. Adv.

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“…In contrast, a denser and smoother surface of the Li metal anode is obtained from the cell with DNCPSE, demonstrating that DNCPSE sheds significant light on moderating the growth of Li-dendrites and elevating the electrochemical stability (Figure S8). − …”

Section: Resultsmentioning

confidence: 99%

Highly Ionic Conductive and Degradable Solid Electrolyte Enabled by a Three-Dimensional Cross-Linking Copolymeric Structure

Zhong

Wang

et al. 2023

ACS Appl. Polym. Mater.

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High ionic conductivity is an essential prerequisite for the application of solid electrolyte (SE) oriented toward solid-state lithium battery (SSLB). Meanwhile, sustainability and environment friendliness of solid electrolytes are required from the green chemistry perspective. However, research on solid electrolytes with simultaneously high ionic conductivity and good degradability remains in its infancy. Herein, a degradable network copolymer solid electrolyte (DNCPSE) was designed and prepared for simultaneously realizing fast lithium-ion transport with a high ionic conductivity of 7.5 × 10 −4 S cm −1 at room temperature and fast degradable properties (e.g., completely degraded within 1.5 h in alkaline condition). Experimental characterizations have demonstrated that the construction of a copolymeric network with sufficient polar groups not only boosts fast lithium-ion hopping but also facilitates the whole decomposition of DNCPSE. By virtue of the combined features, this DNCPSE presents remarkable degradable and electrochemical performances. As a result, the DNCPSE-based Li symmetrical cells display high stability (e.g., >1200 h at 0.1 mA cm −2 ). Moreover, the Li|DNCPSE|LiFePO 4 full cells also display impressive cycling performance (e.g., >200 cycles at 1C). This work provides a promising designed rationale and strategy for sustainable solid electrolytes toward green and efficient solid-state lithium battery.

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“…The low surface charge on Li anode in SICNP could be ascribed to its high t Li + that ensures a homogenous Li‐ion concentration gradient across the cell and then a uniform nucleation of nascent Li 0 . [ 40 ]…”

Section: Resultsmentioning

confidence: 99%

“…The low surface charge on Li anode in SICNP could be ascribed to its high t Li + that ensures a homogenous Li-ion concentration gradient across the cell and then a uniform nucleation of nascent Li 0 . [40] Benefiting from the unique merits including the high ionic conductivity, high t Li + , and the resulting excellent suppression ability of Li dendrites, our SICNP hold remarkable potential in developing advanced SSLBs, especially fast-charging SSLBs. First of all, the feasibility of the SICNP was evaluated in SSLB using LiFePO 4 cathode and Li metal anode.…”

Section: Resultsmentioning

confidence: 99%

Simultaneous High Ionic Conductivity and Lithium‐Ion Transference Number in Single‐Ion Conductor Network Polymer Enabling Fast‐Charging Solid‐State Lithium Battery

Wang

Sun

Zou

et al. 2023

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Developing solid‐state electrolyte with sufficient ionic conduction and flexible‐intimate interface is vital to advance fast‐charging solid‐state lithium batteries. Solid polymer electrolyte yields the promise of interfacial compatibility, yet its critical bottleneck is how to simultaneously achieve high ionic conductivity and lithium‐ion transference number. Herein, single‐ion conducting network polymer electrolyte (SICNP) enabling fast charging is proposed to positively realize fast lithium‐ion locomotion with both high ionic conductivity of 1.1 × 10−3 S cm−1 and lithium‐ion transference number of 0.92 at room temperature. Experimental characterization and theoretical simulations demonstrate that the construction of polymer network structure for single‐ion conductor not only facilitates fast hopping of lithium ions for boosting ionic kinetics, but also enables a high dissociation level of the negative charge for lithium‐ion transference number close to unity. As a result, the solid‐state lithium batteries constructed by coupling SICNP with lithium anodes and various cathodes (e.g., LiFePO4, sulfur, and LiCoO2) display impressive high‐rate cycling performance (e.g., 95% capacity retention at 5 C for 1000 cycles in LiFePO4|SICNP|lithium cell) and fast‐charging capability (e.g., being charged within 6 min and discharged over than 180 min in LiCoO2|SICNP|lithium cell). Our study provides a prospective direction for solid‐state electrolyte that meets the lithium‐ion dynamics for practical fast‐charging solid‐state lithium batteries.

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Unveiling the role of lithiophilic sites denseness in regulating lithium ion deposition

Cited by 12 publications

References 62 publications

Deciphering the dual functions of a silicon dioxide protective layer in regulating lithium-ion deposition

Deciphering the dual functions of a silicon dioxide protective layer in regulating lithium-ion deposition

Highly Ionic Conductive and Degradable Solid Electrolyte Enabled by a Three-Dimensional Cross-Linking Copolymeric Structure

Simultaneous High Ionic Conductivity and Lithium‐Ion Transference Number in Single‐Ion Conductor Network Polymer Enabling Fast‐Charging Solid‐State Lithium Battery

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