Dual electronic-ionic conductivity of pseudo-capacitive filler enables high volumetric capacitance from dense graphene micro-particles

Xu, Yue; Tao, Ying; Li, Huan; Zhang, Chen; Liu, Donghai; Qi, Changsheng; Luo, Jiayan; Kang, Feiyu; Yang, Quan‐Hong

doi:10.1016/j.nanoen.2017.04.054

Cited by 44 publications

(19 citation statements)

References 45 publications

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“…To pursue the maximum energy in a limited space, the tap density of electrode materials has been described as an important indicator that reflects the volumetric energy density along with a lightweight packing in the battery industry. Unfortunately, the use of nanosized anodes with a high electrochemical performance will sacrifice the volumetric capacity because of the low tap density, making them still far from an acceptable level for the practical use …”

Section: Introductionmentioning

confidence: 99%

FeCl₃ Intercalated Microcrystalline Graphite Enables High Volumetric Capacity and Good Cycle Stability for Lithium‐Ion Batteries

et al. 2019

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To achieve a high volumetric capacity, both high tap density and high gravimetric capacity should be considered in one electrode. Herein, microcrystalline graphite (MG), a type of excellent graphite host, is proposed for the large‐scale preparation of FeCl3‐intercalated graphite intercalation compounds (GICs) to simultaneously meet the requirements of high tap density (0.95 g cm−3) and high gravimetric capacity (905 mAh g−1). FeCl3‐intercalated MG achieves the integration of isotropic orientation structure, amorphous carbon ingredients between graphite grains, and crumpled graphite layers, thus effectively buffering structure expansion and suppressing the dissolution of soluble FeCl3 guest and LiCl discharge products. In a lithium‐ion cell, the anode shows a high volumetric capacity of 859 mAh cm−3 and a stable cycle performance for lithium‐ion storage. More importantly, the influence of microstructure features of GICs on their electrochemical properties is demonstrated, which may be of great value to better design and prepare other GIC anodes for high volumetric capacity and good cycle stability.

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Section: Introductionmentioning

confidence: 99%

FeCl₃ Intercalated Microcrystalline Graphite Enables High Volumetric Capacity and Good Cycle Stability for Lithium‐Ion Batteries

et al. 2019

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“…MIEC materials have been successfully used in modifying oxygen selective separation membrane, sensors, and electrode materials in supercapacitors and batteries for decades . Their unique charge carrier transport characteristics also make them ideal anode matrices and protection components in LMBs.…”

Section: Controlling Li+ Flux For Dendrite‐free LI Metal Anodesmentioning

confidence: 99%

Controlling Li Ion Flux through Materials Innovation for Dendrite‐Free Lithium Metal Anodes

Wang

Ren

et al. 2019

Adv Funct Materials

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130

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Lithium (Li) metal with high theoretical capacity and the lowest electrochemical potential has been proposed as the ideal anode for high-energy-density rechargeable battery systems. However, the practical commercialization of Li metal anodes is precluded by a short lifespan and safety problems caused by their intrinsically high reductivity, infinite volume change, and uncontrollable dendrite growth during deposition and dissolution processes. Plenty of strategies have been introduced to solve the above-mentioned problems. Among these, controlling Li + flux plays a vital role to directly influence the plating and stripping process. In this work, the fundamental effect of Li + flux distribution on Li nucleation and early dendrite growth is discussed. Then, recent strategies of controlling Li + flux to suppress dendrite formation and growth through materials design are summarized, including homogenizing Li + flux, localizing Li + flux, and guiding gradient Li + distribution. Finally, underexplored materials are proposed and explored to control Li + flux and further directions for dendrite-free Li anodes. It is expected that this progress report will help to deepen the understanding of Li + flow tuning and morphology control of Li anodes and eventually facilitate the practical application of Li metal batteries.

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“…Furthermore, to achieve the high-efficiency use of the void space in the graphene matrix, we further introduced electric-ionic conductive and pseudo-capacitive polyaniline (PANI) to fully fill the 3D dense graphene network by static adsorption and capillary drying, achieving an ultrahigh volumetric capacitance of 802 F cm −3 in (Fig. 9a, b) [84,85]. Pedros et al [86] reported the controllable electrode position of PANI to fill the pores of CVD-prepared graphene foams and also obtained a high volumetric capacitance.…”

Section: Graphene Monoliths With 3d Networkmentioning

confidence: 99%

“…9 3D dense graphenebased composite. a The design principle of carbon-based composite materials for high volumetric performance [84]. Copyright (2017) Elsevier.…”

Section: Graphene Monoliths With 3d Networkmentioning

confidence: 99%

“…13) [147]. Moreover, by embedding high-capacity non-carbon materials in the void space of the dense graphene matrix, the carbon-non-carbon hybrid delivered high volumetric capacitances even at a high mass loading of active materials and a high current density [83][84][85]116]. More importantly, the densification strategy makes the graphene-derived carbons promising in solving the use of other low-density nanocarbons in EES to increase energy density and power density.…”

Section: Further Design and Functionalization Of Graphene-derived Carmentioning

confidence: 99%

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Engineering Graphenes from the Nano- to the Macroscale for Electrochemical Energy Storage

Han

Wei

Zhang

et al. 2018

Electrochem. Energ. Rev.

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Carbon is a key component in current electrochemical energy storage (EES) devices and plays a crucial role in the improvement in energy and power densities for the future EES devices. As the simplest carbon and the basic unit of all sp 2 carbons, graphene is widely used in EES devices because of its fascinating and outstanding physicochemical properties; however, when assembled in the macroscale, graphene-derived materials do not demonstrate their excellence as individual sheets mostly because of unavoidable stacking. This review proposal shows to engineer graphene nanosheets from the nano-to the macroscale in a well-designed and controllable way and discusses how the performance of the graphene-derived carbons depends on the individual graphene sheets, nanostructures, and macrotextures. Graphene-derived carbons in EES applications are comprehensively reviewed with three representative devices, supercapacitors, lithium-ion batteries, and lithium-sulfur batteries. The review concludes with a comment on the opportunities and challenges for graphene-derived carbons in the rapidly growing EES research area.

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Dual electronic-ionic conductivity of pseudo-capacitive filler enables high volumetric capacitance from dense graphene micro-particles

Cited by 44 publications

References 45 publications

FeCl₃ Intercalated Microcrystalline Graphite Enables High Volumetric Capacity and Good Cycle Stability for Lithium‐Ion Batteries

FeCl₃ Intercalated Microcrystalline Graphite Enables High Volumetric Capacity and Good Cycle Stability for Lithium‐Ion Batteries

Controlling Li Ion Flux through Materials Innovation for Dendrite‐Free Lithium Metal Anodes

Engineering Graphenes from the Nano- to the Macroscale for Electrochemical Energy Storage

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Dual electronic-ionic conductivity of pseudo-capacitive filler enables high volumetric capacitance from dense graphene micro-particles

Cited by 44 publications

References 45 publications

FeCl3 Intercalated Microcrystalline Graphite Enables High Volumetric Capacity and Good Cycle Stability for Lithium‐Ion Batteries

FeCl3 Intercalated Microcrystalline Graphite Enables High Volumetric Capacity and Good Cycle Stability for Lithium‐Ion Batteries

Controlling Li Ion Flux through Materials Innovation for Dendrite‐Free Lithium Metal Anodes

Engineering Graphenes from the Nano- to the Macroscale for Electrochemical Energy Storage

Contact Info

Product

Resources

About

FeCl₃ Intercalated Microcrystalline Graphite Enables High Volumetric Capacity and Good Cycle Stability for Lithium‐Ion Batteries

FeCl₃ Intercalated Microcrystalline Graphite Enables High Volumetric Capacity and Good Cycle Stability for Lithium‐Ion Batteries