Lithium Batteries with Nearly Maximum Metal Storage

Raji, Abdul‐Rahman O.; Salvatierra, Rodrigo V.; Kim, Nam Dong; Fan, Xiujun; Li, Yilun; Silva, Gladys A. L.; Sha, Junwei; Tour, James M.

doi:10.1021/acsnano.7b02731

Cited by 185 publications

(124 citation statements)

References 46 publications

(86 reference statements)

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“…The solid electrolyte interface (SEI) layer on the surface of the electrodes, which may not accommodate the volume change, will be repeatedly break and form during continuous cycling. [28] To solve this problem, the 3D porous current collectors were used as host structures for Li metal in recent studies, such as 3D porous copper current collectors, [29][30][31][32][33] 3D nickel foam host, [34] and graphene [35,36] electrode. [21,22] These severe problems impede the practical applications of Li metal anodes and the approach to solve these multifaceted problems would be imperative.…”

mentioning

confidence: 99%

N‐Doped Graphene Modified 3D Porous Cu Current Collector toward Microscale Homogeneous Li Deposition for Li Metal Anodes

Zhang

Wen

Wang

et al. 2018

Advanced Energy Materials

167

105

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standard hydrogen electrode). [6][7][8][9][10] Unfortunately, the uneven plating/stripping of Li metal causes uncontrolled Li dendrite growth, which induces a series of problems. First, the continuous growth of Li dendrites may puncture the separator and cause short circuit, consequently resulting in serious safety issues. [11][12][13][14] Second, Li dendrite growth can consume electrolyte and dendritic Li may lose its electronic contact with electrode (called "dead Li") during Li stripping process, accordingly reducing the Coulombic efficiency (CE) and leading to capacity fading. [15][16][17] In addition, different from the other anode materials, the relative volume change of Li metal anodes is infinite due to its "hostless" nature, leading to internal pressure changes and interfacial fluctuations. The solid electrolyte interface (SEI) layer on the surface of the electrodes, which may not accommodate the volume change, will be repeatedly break and form during continuous cycling. [18][19][20] Moreover, the broken SEI will greatly exacerbate the uneven Li electrodeposits nucleate and accelerate the growth of Li dendrites. [21,22] These severe problems impede the practical applications of Li metal anodes and the approach to solve these multifaceted problems would be imperative.To tackle these critical issues, tremendous efforts have been taken to improve the stability of Li metal anodes and the SEI from different perspectives. In order to stabilize the SEI layer, various electrolyte additives, such as Cs + and Rb + ions, LiF, Li 2 S 8 , and LiNO 3 , were used. [23][24][25] Introducing nanoscale interfacial layers has also been intensively investigated (such as interconnected carbon nanospheres [26] and hexagonal boron nitride [27] ), where repeated deposition/stripping of Li under the layers exhibited stable CE. However, the above-mentioned methods based on Li foil (2D Li metal anodes) could not effectually prevent the huge volume change upon stripping/plating of Li metal. Thus, the internal pressure changes and interfacial fluctuations still happened during cycling. [28] To solve this problem, the 3D porous current collectors were used as host structures for Li metal in recent studies, such as 3D porous copper current collectors, [29][30][31][32][33] 3D nickel foam host, [34] and graphene [35,36] electrode. As a major part of Li metal batteries, the current collector has direct influence Lithium metal is the most promising anode material for high-energy-density batteries due to its high specific capacity of 3860 mAh g −1 and low reduction potential of −3.04 V versus standard hydrogen electrode. However, huge volume change, safety concerns, and low efficiency impede the practical applications of Li metal anodes. Herein, it is shown that the nitrogen-doped graphene modified 3D porous Cu (3DCu@NG) current collector can mitigate the above problems. The N-doped graphene, coating on the surface of 3D current collector, not only contributes to a uniform Li + flux, but also leads to a scattered distribution of electrons t...

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mentioning

confidence: 99%

N‐Doped Graphene Modified 3D Porous Cu Current Collector toward Microscale Homogeneous Li Deposition for Li Metal Anodes

Zhang

Wen

Wang

et al. 2018

Advanced Energy Materials

167

105

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“…[226] L.B. Introducing a 3D porous framework as the host structure for Li deposition is a beneficial strategy to accommodate the volumetric change.…”

Section: Interface Engineering To Minimize the Interfacial Resistancementioning

confidence: 99%

Interfacial Incompatibility and Internal Stresses in All‐Solid‐State Lithium Ion Batteries

Liu

et al. 2019

Advanced Energy Materials

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The continuous depletion of fossil fuels, the increase of oil prices, and the need to decrease CO 2 emissions have stimulated intensive research on developing alternative renewable and clean energy sources. [1] Among these alternative energy sources, rechargeable Li-ion batteries (LIBs) are one of the promising candidates. To date, the LIBs basically consisting of a positive electrode (cathode), an electrolyte, and a negative electrode (anode) have widespread applications, such as portable electronic devices, pure electric vehicles (PEVs), and hybrid electric vehicles (HEVs). [2] The state-of-the-art electrolytes are usually the lithium salts (LiPF 6 , LiBF 4 , and LiCF 3 SO 3 ) dissolved in organic solvents, i.e., ethylene carbonate, propylene carbonate, polyethylene oxide, and dimethyl carbonate, [3] which exhibit excellent wetting of the electrodes and produce a fast transfer of Li + ions upon charging and discharging. However, they suffer from flammability, poor electrochemical stability, limited temperature range of operation, and low power density. [4] There is an ever-increasing demand for batteries with a higher energy and power density, although current LIBs offer volumetric and gravimetric energy densities up to 770 Wh L −1 and 260 Wh kg −1 , respectively. [5] To improve the energy/power density of LIBs, one way is to adopt high-potential cathode materials such as LiNi 0.5 Mn 1.5 O 4 (LNMO). The high-voltage plateau of LNMO (≈4.7 V vs Li/Li + ) makes its energy density 20-30% higher than the energy density of commercial LiCoO 2 and LiFePO 4 . [6] However, successful commercialization of the LNMO is restricted in high-energy LIBs due to electrolyte decomposition and side reaction of the cathodes and liquid electrolytes when operating at high voltages. [7,8] The other way to improve the energy/power density is to replace the conventional graphite anode with Li metal. The Li metal, with a low anode potential (−3.04 V vs standard hydrogen electrode) and high specific capacity (3862 mAh g −1 for the Li anode versus 372 mAh g −1 for the graphite anode), [9][10][11] has been considered as the "Holy Grail" of battery technologies. When paired with sulfur and oxygen, the theoretical energy density of Li-S (≈2567 Wh kg −1 ) and Li-O 2 (≈3505 Wh kg −1 ) batteries is far higher than the theoretical energy density of conventional LIBs (≈387 Wh kg −1 ). [12][13][14][15] When Li metal approaches the liquid electrolytes, however, unstable Li/electrolyte interface Rechargeable Li-ion batteries (LIBs) are electrochemical storage device widely applied in electric vehicles, mobile electronic devices, etc. However, traditional LIBs containing liquid electrolytes suffer from flammability, poor electrochemical stability, and limited operational temperature range. Replacement of the liquid electrolytes with inorganic solid-state electrolytes (SSEs) would solve this problem. However, several critical issues, such as poor interfacial compatibility, low ionic conductivity at ambient temperatures, etc., need to be surmounted befor...

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“…The structures and morphologies of inorganic materials can significantly affect their performances when applied in the field of electrochemical energy storage [10,11]. With the rapid progress of nanofabrication, inorganic materials with controllable morphologies, sizes and structures have been achieved [12,13].…”

Section: Controllable Crystal Morphologies By Nanofabricationmentioning

confidence: 99%

Nanofabrication strategies for advanced electrode materials

Chen

Xue

2017

Nanofabrication

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Advanced energy storage devices, i.e., Li-ion battery, supercapacitor, need high electroactive metal oxide materials with stable structure during charging/ discharging cycling [1][2][3]. However, metal oxide electrode materials often suffer from low conductivity, and slow ion diffusion rate during electrochemical redox reaction. In recent years, lots of efforts are done to design nanostructured materials to enhance their function. When downsizing to nanosize, the electroactive areas of materials are increased and ion/electron diffusion length is shortened, and therefore specific capacitance of active materials is significantly enhanced [4][5][6]. For example, 3D holey-graphene/niobia composite architectures have been designed to show ultrahigh-rate energy storage performance [7]. The highly interconnected graphene network in the 3D architecture shows excellent electron transport properties, while its hierarchical porous structure enables rapid ion transport. Although the nanostructured materials have shown extraordinary promise for electrochemical energy storage, most of the existing synthesis techniques require multistep and laborious procedures [8,9]. The dual pressure of energy needs and environmental requirements in society demand the rapid screening of exceptional performance materials to shorten R&D of advanced energy storage devices. As shown in Figure 1a, R&D of electrode materials mainly includes structure & component design, materials synthesis and performance evaluation. During these processes, materials synthesis often need longer time and complex equipments, which increase the finding time of new electrode materials. The development of easy and fast nanofabrication strategy can accelerate finding rate of new electrode materials in laboratory (Figure 1b). Furthermore, with creative design idea, the material synthesis process can be replaced or fused into one structure-performance process (Figure 1c), which not only accelerate the finding rate of new electrode materials, but also decrease the cost of searching new electrode materials. Abstract: The development of advanced electrode materials for high-performance energy storage devices becomes more and more important for growing demand of portable electronics and electrical vehicles. To speed up this process, rapid screening of exceptional materials among various morphologies, structures and sizes of materials is urgently needed. Benefitting from the advance of nanotechnology, tremendous efforts have been devoted to the development of various nanofabrication strategies for advanced electrode materials. This review focuses on the analysis of novel nanofabrication strategies and progress in the field of fast screening advanced electrode materials. The basic design principles for chemical reaction, crystallization, electrochemical reaction to control the composition and nanostructure of final electrodes are reviewed. Novel fast nanofabrication strategies, such as burning, electrochemical exfoliation, and their basic principles are also summarized. More im...

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Lithium Batteries with Nearly Maximum Metal Storage

Cited by 185 publications

References 46 publications

N‐Doped Graphene Modified 3D Porous Cu Current Collector toward Microscale Homogeneous Li Deposition for Li Metal Anodes

N‐Doped Graphene Modified 3D Porous Cu Current Collector toward Microscale Homogeneous Li Deposition for Li Metal Anodes

Interfacial Incompatibility and Internal Stresses in All‐Solid‐State Lithium Ion Batteries

Nanofabrication strategies for advanced electrode materials

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