Lithiophilic Sites in Doped Graphene Guide Uniform Lithium Nucleation for Dendrite‐Free Lithium Metal Anodes

Zhang, Rui; Chen, Xiaoru; Chen, Xiang; Cheng, Xin‐Bing; Zhang, Xueqiang; Yan, Chong; Zhang, Qiang

doi:10.1002/ange.201702099

Cited by 221 publications

(153 citation statements)

References 42 publications

(42 reference statements)

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“…N 1s spectra exhibits four peaks at the surface due to its strong oxidizing nature (Figure C), namely,

{NO}_{3}^{-}

(407.0 eV),

normalN {({SO}_{2} F)}_{2}^{-}

(401.6 eV), and their reduction products

{NO}_{2}^{-}

(403.3 eV) and Li 3 N (399.0 eV).

{NOS}_{2}^{-}

(400.1 eV) emerges after 1.0 minute of etching . As etching continues, all N species converts to Li 3 N which has an ultrahigh ionic conductivity of 10 −3 to 10 −4 S cm −1 , thus enabling fast Li‐ion transport through CIL .…”

Section: Resultsmentioning

confidence: 99%

“…NOS -2 (400.1 eV) emerges after 1.0 minute of etching. 58,59 As etching continues, all N species converts to Li 3 N which has an ultrahigh ionic conductivity of 10 −3 to 10 −4 S cm −1 , thus enabling fast Li-ion transport through CIL. 60 Based on these results, CIL is mainly composed of Li 2 O, LiF, and Li 3 N as inorganics and the possible reaction mechanisms of the decomposition of IL precursor in contact with Li metal are also proposed:…”

Section: Resultsmentioning

confidence: 99%

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A compact inorganic layer for robust anode protection in lithium‐sulfur batteries

Yao

Zhang

et al. 2019

InfoMat

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210

106

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Lithium‐sulfur (Li‐S) batteries are one of the most promising candidates for high energy density rechargeable batteries beyond current Li‐ion batteries. However, severe corrosion of Li metal anode and low Coulombic efficiency (CE) induced by the unremitting shuttle of Li polysulfides immensely hinder the practical applications of Li‐S batteries. Herein, a compact inorganic layer (CIL) formed by ex situ reactions between Li anode and ionic liquid emerged as an effective strategy to block Li polysulfides and suppress shuttle effect. A CE of 96.7% was achieved in Li‐S batteries with CIL protected Li anode in contrast to 82.4% for bare Li anode while no lithium nitrate was employed. Furthermore, the corrosion of Li during cycling was effectively inhibited. While applied to working batteries, 80.6% of the initial capacity after 100 cycles was retained in Li‐S batteries with CIL‐protected ultrathin (33 μm) Li anode compared with 58.5% for bare Li anode, further demonstrating the potential of this strategy for practical applications. This study presents a feasible interfacial regulation strategy to protect Li anode with the presence of Li polysulfides and opens avenues for Li anode protection in Li‐S batteries under practical conditions.

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“…N 1s spectra exhibits four peaks at the surface due to its strong oxidizing nature (Figure C), namely,

{NO}_{3}^{-}

(407.0 eV),

normalN {({SO}_{2} F)}_{2}^{-}

(401.6 eV), and their reduction products

{NO}_{2}^{-}

(403.3 eV) and Li 3 N (399.0 eV).

{NOS}_{2}^{-}

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

A compact inorganic layer for robust anode protection in lithium‐sulfur batteries

Yao

Zhang

et al. 2019

InfoMat

Self Cite

210

106

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show abstract

“…Such a uniform nucleation can be attributed to well‐distributed N‐containing nanoarrays in the 3DRGO/NC. The strong interaction between N‐doped functional group and Li can initiate uniform nucleation of Li ions with lower nucleation overpotential . For comparison, the 3DRGO shows an uneven rugged surface with high concentration of metallic Li (Figure S6a and S6b).…”

Section: Resultsmentioning

confidence: 99%

“…The strong interaction between N-doped functional group and Li can initiate uniform nucleation of Li ions with lower nucleation overpotential. 44 For comparison, the 3DRGO shows an uneven rugged surface with high concentration of metallic Li (Figure S6a and S6b). The Li deposited on the 3DRGO is agglomerated with clearly "small hill" structure showing the uneven nucleation of Li.…”

Section: Morphology Of LI Metal Depositionmentioning

confidence: 99%

Nitrogen‐doped nanoarray‐modified 3D hierarchical graphene as a cofunction host for high‐performance flexible Li‐S battery

Cheng

Mao

et al. 2020

EcoMat

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Lithium‐sulfur (Li‐S) batteries with high energy density are promising candidates for next‐generation energy storage systems. Practical application of Li‐S batteries is hindered by shuttle effect of polysulfides and Li dendrites growth. Herein, a self‐supporting cofunction host is constructed with 3D hierarchical graphene modified by N‐doped nanoarrays, for both Li anode and S cathode to improve their performances simultaneously. Attributed to high conductivity, strong affinity, and optimized Li‐ion transport pathway of N‐doped nanoarrays, cofunction host provide excellent Li and S load, which facilitates uniform Li deposition and enhanced S conversion. Particularly, an extra graphene barrier is specialized for S cathode to inhibit the shuttle effect. As a result, Li anode shows long cycle life with outstanding Li‐plating behavior, and S cathode shows high capacity and ultrahigh capacity retention with good immobilization of polysulfides. More importantly, the integrated Li‐S battery shows long cycle stability and good flexibility, which is important for future application.

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“…[153][154][155][156][157][158][159][160][161] Besides, the mechanical rigidity of solid ceramic electrolytes suppresses the formation of Li dendrites, which is a major reason for battery short circuits. Forth, the optimization of separators, 8,[162][163][164][165][166][167] current collectors, 168 anode materials, 89,[169][170][171][172] and cathode materials [173][174][175] may also improve the safety of batteries. Detailed discussion on these optimizations can be found in a recent review.…”

Section: Improving Safetymentioning

confidence: 99%

A review of rechargeable batteries for portable electronic devices

Liang

Zhao

Yuan

et al. 2019

InfoMat

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808

396

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Portable electronic devices (PEDs) are promising information‐exchange platforms for real‐time responses. Their performance is becoming more and more sensitive to energy consumption. Rechargeable batteries are the primary energy source of PEDs and hold the key to guarantee their desired performance stability. With the remarkable progress in battery technologies, multifunctional PEDs have constantly been emerging to meet the requests of our daily life conveniently. The ongoing surge in demand for high‐performance PEDs inspires the relentless pursuit of even more powerful rechargeable battery systems in turn. In this review, we present how battery technologies contribute to the fast rise of PEDs in the last decades. First, a comprehensive overview of historical advances in PEDs is outlined. Next, four types of representative rechargeable batteries and their impacts on the practical development of PEDs are described comprehensively. The development trends toward a new generation of batteries and the future research focuses are also presented.

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Lithiophilic Sites in Doped Graphene Guide Uniform Lithium Nucleation for Dendrite‐Free Lithium Metal Anodes

Cited by 221 publications

References 42 publications

A compact inorganic layer for robust anode protection in lithium‐sulfur batteries

A compact inorganic layer for robust anode protection in lithium‐sulfur batteries

Nitrogen‐doped nanoarray‐modified 3D hierarchical graphene as a cofunction host for high‐performance flexible Li‐S battery

A review of rechargeable batteries for portable electronic devices

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