High-Mass-Loading Electrodes for Advanced Secondary Batteries and Supercapacitors

Wu, Feng; Liu, Mingquan; Li, Ying; Feng, Xin; Zhang, Kun; Bai, Ying; Wang, Xinran; Wu, Chuan

doi:10.1007/s41918-020-00093-0

Cited by 206 publications

(113 citation statements)

References 397 publications

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“…The Nitrogen adsorption–desorption experiment further confirms the existence of porous structure which benefit the electrochemical performance of high‐mass‐loading electrodes. [ 31 ] And the average pore diameter of Ni 0.1 Zn 0.1 Co 0.8 Se 2 is 11.3 nm, as shown in Figure 2b. According to the Raman spectra of different CoSe 2 samples shown in Figure 2c, the peak around 190 cm ‐1 is SeSe stretching mode of CoSe 2 , [ 32 ] and the peaks at 1340 and 1583 cm ‐1 are typical features of carbon matrix, corresponding to the D band and G band, respectively.…”

Section: Resultsmentioning

confidence: 98%

Bifunctional Catalytic Effect of CoSe₂ for Lithium–Sulfur Batteries: Single Doping versus Dual Doping

Chen

Cao

et al. 2021

Adv Funct Materials

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Designing catalysts to accelerate the conversion of soluble lithium polysulfides (LiPSs) is regarded as a promising strategy to inhibit the shuttle effect, improving cathode performance of lithium–sulfur batteries (LSBs). Herein, a bifunctional Ni/Zn dual‐doped CoSe2 is designed to enhance the catalytic effect of CoSe2. Specifically, Ni functions better in catalyzing the conversion of LiPSs into Li2S with shorter CoS bond and longer SS bonds than Zn, while Zn demonstrates a better catalytic effect for Li2S decomposition with reduced Li2S decomposition barrier and elongated LiS bonds than Ni. Those endows Ni/Zn dual‐doped CoSe2 with bifunction in catalyzing conversion reaction of LiPSs and Li2S precipitation as well as the decomposition of Li2S, originating from the modified molecular structure of LiPSs and Li2S. As a result, the sulfur cathode with Ni0.1Zn0.1Co0.8Se2 achieves a rate capability of 681.74 mAh g–1 at 2C, and a cycling stability for 400 cycles with a decay rate of 0.065%. This work provides an effective way to improve catalytic effect of transition metal compounds for advanced LSBs by homogenous dual doping.

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Section: Resultsmentioning

confidence: 98%

Bifunctional Catalytic Effect of CoSe₂ for Lithium–Sulfur Batteries: Single Doping versus Dual Doping

Chen

Cao

et al. 2021

Adv Funct Materials

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“…One approach to increase energy density is to develop electrode active materials with a large specific capacitance. 1 − 3 Based on the charge surface-storage mechanism, a porous structure in nanoscale is indispensable for electrode materials that could combine EDLC and pseudocapacitor features, which have exhibited its potential in this regard. 15 − 17 The emergence of new structures such as embedded and wrapped structures provides new concepts for the combination of EDLC and pseudocapacitor electrodes to improve energy density.…”

Section: Introductionmentioning

confidence: 99%

In Situ-Grown Heterostructured Co₃S₄/CNTs/C Nanocomposites with a Bridged Structure for High-Performance Supercapacitors

Qiao

Wang

et al. 2021

ACS Omega

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As one of the most competitive candidates for energy storage devices, supercapacitors have attracted extensive research interest due to their incomparable power density and ultralong cycling stability. However, the large surface area required for charge storage is an irreconcilable contradiction with the requirement of energy density. Therefore, a high energy density is a major challenge for supercapacitors. To solve the contradiction, Co 3 S 4 /CNTs/C with a bridged structure is designed, where CNTs generated in situ serve as a bridge to connect a porous carbon matrix and a Co 3 S 4 nanoparticle, and Co 3 S 4 nanoparticles are anchored on the topmost of CNTs. The porous carbon and Co 3 S 4 are used for electrochemical double-layer capacitors and pseudocapacitors, respectively. This bridged structure can efficiently utilize the surface of Co 3 S 4 nanoparticles to increase the overall energy storage capacity and provide more electrochemically active sites for charge storage and delivery. The materials show an energy density of 41.3 Wh kg –1 at 691.9 W kg –1 power density and a retaining energy density of 33.1 Wh kg –1 at a high power density of 3199.9 W kg –1 in an asymmetrical supercapacitor. The synthetic technique provides a simple method to obtain heterostructured nanocomposites with a high energy density by maximizing the effect of pseudocapacitor electrode active materials.

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“…The low-tortuosity electrode with directional microchannels is usually constructed by freeze-drying technique, self-assembly and template methods. [71] For example, Sun's group constructed high-areal-capacity all-solid-state lithium batteries with vertically aligned LFP electrode by an ice-template freeze-casting method. [72] The vertically aligned structure converted the thick electrode into numerous thin electrode with a thickness of 20 µm, shortening the Li-ions diffusion length and enhancing the electrochemical kinetics.…”

Section: Low-tortuosity Electrodementioning

confidence: 99%

Commercialization‐Driven Electrodes Design for Lithium Batteries: Basic Guidance, Opportunities, and Perspectives

Cao

Liang

Zhang

et al. 2021

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vehicles (HEVs), because of their high energy density and long lifetime. [1][2][3] In recent years, the ever-growing demand on electric vehicles contributes to the continuous growth of the battery market, and the energy storage devices of EVs/HEVs raise stern demands on higher energy density (>300 Wh kg −1 ) and lower cost (500 Wh kg −1 ), and the standard parameters for different electrode systems toward this high energy density goal are well summarized in the previous works. [7][8][9] In particular, the innovative battery chemistries (i.e., Li-metal battery and all-solid-state lithium battery) using Li metal as anode, exhibit much higher energy density than current lithium-ion batteries, whereas some technological issues are needed to be addressed first, such as dendrite formation suppression, industrial battery Current lithium-ion battery technology is approaching the theoretical energy density limitation, which is challenged by the increasing requirements of ever-growing energy storage market of electric vehicles, hybrid electric vehicles, and portable electronic devices. Although great progresses are made on tailoring the electrode materials from methodology to mechanism to meet the practical demands, sluggish mass transport, and charge transfer dynamics are the main bottlenecks when increasing the areal/volumetric loading multiple times to commercial level. Thus, this review presents the state-of-the-art developments on rational design of the commercialization-driven electrodes for lithium batteries. First, the basic guidance and challenges (such as electrode mechanical instability, sluggish charge diffusion, deteriorated performance, and safety concerns) on constructing the industry-required high mass loading electrodes toward commercialization are discussed. Second, the corresponding design strategies on cathode/anode electrode materials with high mass loading are proposed to overcome these challenges without compromising energy density and cycling durability, including electrode architecture, integrated configuration, interface engineering, mechanical compression, and Li metal protection. Finally, the future trends and perspectives on commercializationdriven electrodes are offered. These design principles and potential strategies are also promising to be applied in other...

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High-Mass-Loading Electrodes for Advanced Secondary Batteries and Supercapacitors

Cited by 206 publications

References 397 publications

Bifunctional Catalytic Effect of CoSe₂ for Lithium–Sulfur Batteries: Single Doping versus Dual Doping

Bifunctional Catalytic Effect of CoSe₂ for Lithium–Sulfur Batteries: Single Doping versus Dual Doping

In Situ-Grown Heterostructured Co₃S₄/CNTs/C Nanocomposites with a Bridged Structure for High-Performance Supercapacitors

Commercialization‐Driven Electrodes Design for Lithium Batteries: Basic Guidance, Opportunities, and Perspectives

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High-Mass-Loading Electrodes for Advanced Secondary Batteries and Supercapacitors

Cited by 206 publications

References 397 publications

Bifunctional Catalytic Effect of CoSe2 for Lithium–Sulfur Batteries: Single Doping versus Dual Doping

Bifunctional Catalytic Effect of CoSe2 for Lithium–Sulfur Batteries: Single Doping versus Dual Doping

In Situ-Grown Heterostructured Co3S4/CNTs/C Nanocomposites with a Bridged Structure for High-Performance Supercapacitors

Commercialization‐Driven Electrodes Design for Lithium Batteries: Basic Guidance, Opportunities, and Perspectives

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Bifunctional Catalytic Effect of CoSe₂ for Lithium–Sulfur Batteries: Single Doping versus Dual Doping

Bifunctional Catalytic Effect of CoSe₂ for Lithium–Sulfur Batteries: Single Doping versus Dual Doping

In Situ-Grown Heterostructured Co₃S₄/CNTs/C Nanocomposites with a Bridged Structure for High-Performance Supercapacitors