High-performing rechargeable/flexible zinc-air batteries by coordinated hierarchical Bi-metallic electrocatalyst and heterostructure anion exchange membrane

Xu, Nengneng; Zhang, Dengsong; Wang, Min; Fan, Xiujun; Zhang, Tao; Peng, Luwei; Zhou, Xiao‐Dong; Qiao, Jinli

doi:10.1016/j.nanoen.2019.104021

Cited by 71 publications

(43 citation statements)

References 54 publications

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“…On the other hand, the Ni x Co 1− x S 2 may provide a redox‐active surface for facilitating the redeposition of the dissolved Mn species. [ 62 ] The above excellent high‐rate galvanostatic charge–discharge performance and good cycling stability of the function‐separated MnS–Ni x Co 1− x S 2 electrode are better than most advanced cathodes for hybrid Zn batteries [ 15–18,23,26,29 ] and for Zn–air batteries, [ 31,63–72 ] as compared in Table S1 (Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

A Function‐Separated Design of Electrode for Realizing High‐Performance Hybrid Zinc Battery

Zhong

Liu

et al. 2020

Advanced Energy Materials

101

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A rechargeable hybrid zinc battery is developed for reaching high power density and high energy density simultaneously by introducing an alkaline Zn–transition metal compound (Zn–MX) battery function into a Zn–air battery. However, the conventional single‐layer electrode design cannot satisfy the requirements of both a hydrophilic interface for facilitating ionic transfer to maximize the Zn–MX battery function and a hydrophobic interface for promoting gas diffusion to maximize the Zn–air battery function. Here, a function‐separated design is proposed, which allocates the two battery functions to the two faces of the cathode. The electrode is composed of a hydrophobic MnS layer decorated with Ni–Co–S nanoclusters that allows for smooth gas diffusion and efficient oxygen electrocatalysis and a hydrophilic NixCo1−xS2 layer that favors fast ionic transfer and superior performance for energy storage. The battery with the function‐separated electrode shows a high short‐term discharge voltage of ≈1.7 V, an excellent high‐rate galvanostatic discharge–charge with a power density up to 153 mW cm−2 at 100 mA cm−2, a good round‐trip efficiency of 75% at 5 mA cm−2, and a robust cycling stability for 330 h with an excellent voltage gap of ≈0.7 V at 5 mA cm−2.

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Section: Resultsmentioning

confidence: 99%

A Function‐Separated Design of Electrode for Realizing High‐Performance Hybrid Zinc Battery

Zhong

Liu

et al. 2020

Advanced Energy Materials

101

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“…As depicted in Figure 4C, the Co-NS@NCP-700 sample exhibits a favorable Tafel slope value of 95.9 mV cm −2 which is competitive to commercial RuO 2 (101.6 mV cm −2 ) and clearly less than Co-NS@NCP-600 (126.4 mV cm −2 ), Co-NS@NCP-650 (135.6 mV cm −2 ), and Co-NS@NCP-750 (125.1 mV cm −2 ). The low Tafel slope of Co-NS@NCP-700 manifests that the Co-NS@NCP-700 employs the first discharge step (i.e., the chemical adsorption of OH − species: M + OH − → M-OH + e − ) as a rate-limiting step and influences the reaction kinetics (Xu et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

Coupling Hierarchical Ultrathin Co Nanosheets With N-Doped Carbon Plate as High-Efficiency Oxygen Evolution Electrocatalysts

Wang

Zhou

et al. 2021

Front. Nanotechnol.

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The rational design of cost-effective and highly efficient catalysts for the oxygen evolution reaction (OER) is vastly desirable for advanced renewable energy conversion and storage systems. Tailoring the composition and architecture of electrocatalysts is a reliable approach for improving their catalytic performance. Herein, we developed hierarchical ultra-thin Co nanosheets coupled with N-doped carbon plate (Co-NS@NCP) as an efficient OER catalyst through a feasible and easily scalable NaCl template method. The rapid dissolution-recrystallization-carbonization synthesis process allows Co nanosheets to self-assemble into plenty of secondary building units and to distribute uniformly on N-doped carbon plate. Benefitting from the vertically aligned Co nanosheet arrays and hierarchical architecture, the obtained Co-NS@NCP possess an extremely high specific surface area up to 446.49 m2 g−1, which provides sufficient exposed active sites, excellent structure stability, and multidimensional mass transfer channels. Thus, the Co-NS@NCP affords remarkable electrocatalytic performance for OER in an alkaline medium with a low overpotential of only 278 mV at 10 mA cm−2, a small Tafel slope, as well as robust electrocatalytic stability for long-term electrolysis operation. The present findings here emphasize a rational and promising perspective for designing high-efficiency non-precious electrocatalysts for the OER process and sustainable energy storage and conversion system.

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“…[132] Present studies focus on addressing these issues to improve the battery lifetime by utilizing novel electrolyte systems. As for the polymer electrolyte materials, various approaches have been proposed including modification of polymer matrices, [133][134][135][136][137] utilization of electrolyte additives, [138,139] exploration of novel ion-conductors, [140] tuning the electrolyte alkalinity, [141,142] and using a carbon dioxide tolerant anion exchange membrane, [143] etc. Excitingly, a crosslinked PVA-PAA-based GPE accompanied with graphene oxide and KI was proposed for flexible ZnÀ air battery, in which the introduced reaction modifier I À could change the conventional path of OER and GO prolonged the diffusion distance to release water from the polymer matrix.…”

Section: Metalà Air Batteriesmentioning

confidence: 99%

Flexible and Wearable Power Sources for Next‐Generation Wearable Electronics

Fan

Liu

Ding

et al. 2020

Batteries & Supercaps

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Personal electronic devices are moving toward an era in pursuit of wearability and versatility enabling a wide range of healthcare, entertainment and sports applications. Conventional power source with bulky and rigid structure becomes a bottleneck for the rapid advancements of wearable smart electronics. To meet the requirement of next-generation wearable electronics, power supplies with high flexibility, bendability, and stretchability have received extensive attention. In this review, requirements of flexible and wearable power sources in terms of the flexible battery configuration design, flexible materials, energy density and other request are highlighted. Several promising power supplies (e. g., metalÀ sulfur batteries, metalÀ air batteries, energy storage and conversion integrated devices) for the application of wearables are discussed in detail. Furthermore, discussions are presented on the remaining challenges and some possible research directions to establish a perspective for practical applications of power sources for wearable electronics in the near future.

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High-performing rechargeable/flexible zinc-air batteries by coordinated hierarchical Bi-metallic electrocatalyst and heterostructure anion exchange membrane

Cited by 71 publications

References 54 publications

A Function‐Separated Design of Electrode for Realizing High‐Performance Hybrid Zinc Battery

A Function‐Separated Design of Electrode for Realizing High‐Performance Hybrid Zinc Battery

Coupling Hierarchical Ultrathin Co Nanosheets With N-Doped Carbon Plate as High-Efficiency Oxygen Evolution Electrocatalysts

Flexible and Wearable Power Sources for Next‐Generation Wearable Electronics

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