scholarly journals 3D hierarchically macro-/mesoporous graphene frameworks enriched with pyridinic-nitrogen-cobalt active sites as efficient reversible oxygen electrocatalysts for rechargeable zinc-air batteries

2021 ◽  
Vol 42 (4) ◽  
pp. 571-582
Author(s):  
Sheng Zhou ◽  
Jiayi Qin ◽  
Xueru Zhao ◽  
Jing Yang
Keyword(s):  
Active Sites ◽  
Pyridinic Nitrogen ◽  
Zinc Air Batteries

Highly doped and exposed Cu(i)–N active sites within graphene towards efficient oxygen reduction for zinc–air batteries

2016 ◽  
Vol 9 (12) ◽  
pp. 3736-3745 ◽  
Author(s):  
Haihua Wu ◽  
Haobo Li ◽  
Xinfei Zhao ◽  
Qingfei Liu ◽  
Jing Wang ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Active Sites ◽  
High Performance ◽  
High Density ◽  
Catalyst Loading ◽  
Zinc Air Batteries

High-density coordination unsaturated copper(i)–nitrogen embedded in graphene demonstrates a high performance and stability in primary zinc–air batteries with ultralow catalyst loading.

Precise Identification of Active Sites of a High Bifunctional Performance 3D Co/N-C Catalyst in Zinc-air Batteries

2022 ◽  
pp. 134500
Author(s):  
Rui Wang ◽  
Hongcen Yang ◽  
Niandi Lu ◽  
Shulai Lei ◽  
Dali Jia ◽  
...  
Keyword(s):  
Active Sites ◽  
Precise Identification ◽  
Zinc Air Batteries

Efficient Bifunctional Catalytic Electrodes with Uniformly Distributed NiN 2 Active Sites and Channels for Long‐Lasting Rechargeable Zinc–Air Batteries

Small ◽  
2020 ◽  
Vol 16 (32) ◽  
pp. 2002518 ◽  
Author(s):  
Zihe Cai ◽  
Shengxuan Lin ◽  
Jiajia Xiao ◽  
Tahir Muhmood ◽  
Yuhang Chen ◽  
...  
Keyword(s):  
Active Sites ◽  
Zinc Air Batteries

Nanosheets assembled into nickel sulfide nanospheres with enriched Ni3+ active sites for efficient water-splitting and zinc–air batteries

2019 ◽  
Vol 7 (41) ◽  
pp. 23787-23793 ◽  
Author(s):  
Xiangkai Shi ◽  
Xiaofei Ling ◽  
Lanlan Li ◽  
Cheng Zhong ◽  
Yida Deng ◽  
...  
Keyword(s):  
Water Splitting ◽  
Active Sites ◽  
Nickel Sulfide ◽  
Oxygen Intermediates ◽  
Functional Activities ◽  
Zinc Air Batteries

Nanosheets assembled into nickel sulfide nanospheres were synthesized in a controlled manner, and exhibited superior tri-functional activities owing to optimized binding with hydrogen/oxygen intermediates.

Co nanoparticles combined with nitrogen-doped graphitic carbon anchored on carbon fibers as a self-standing air electrode for flexible zinc–air batteries

2020 ◽  
Vol 8 (15) ◽  
pp. 7184-7191 ◽  
Author(s):  
Yangshen Chen ◽  
Wenhui Zhang ◽  
Zeyu Zhu ◽  
Lulu Zhang ◽  
Jiayi Yang ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
Active Sites ◽  
Graphitic Carbon ◽  
Air Electrode ◽  
Nitrogen Doped ◽  
Co Nanoparticles ◽  
Zinc Air Batteries

The flexible Co@NPCFs composites can provide rich active sites for electrocatalysis and are able to capture oxygen and desorb the OH− during the discharging and charging processes of ZABs.

Elucidation of Active Sites on S, N Codoped Carbon Cubes Embedding Co–Fe Carbides toward Reversible Oxygen Conversion in High‐Performance Zinc–Air Batteries

Small ◽  
2020 ◽  
Vol 16 (23) ◽  
pp. 1907368 ◽  
Author(s):  
Yuebin Lian ◽  
Kefei Shi ◽  
Haojing Yang ◽  
Hao Sun ◽  
Pengwei Qi ◽  
...  
Keyword(s):  
Active Sites ◽  
High Performance ◽  
Oxygen Conversion ◽  
Zinc Air Batteries

Template-free synthesis of polyacrylonitrile-derived porous carbon nanoballs on graphene for efficient oxygen reduction in zinc–air batteries

2021 ◽  
Vol 9 (15) ◽  
pp. 9644-9654
Author(s):  
Halima Begum ◽  
Mohammad Shamsuddin Ahmed ◽  
Seunghun Jung
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Active Sites ◽  
Reduction Reaction ◽  
Metal Free ◽  
Template Free ◽  
Energy Conversion Devices ◽  
Zinc Air Batteries

Introducing abundant active sites and improving their activity are two critical considerations for designing metal-free nitrogenous electrocatalysts for the oxygen reduction reaction (ORR) in energy conversion devices such as metal–air batteries and fuel cells.

scholarly journals d-Orbital steered active sites through ligand editing on heterometal imidazole frameworks for rechargeable zinc-air battery

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Yi Jiang ◽  
Ya-Ping Deng ◽  
Ruilin Liang ◽  
Jing Fu ◽  
Rui Gao ◽  
...  
Keyword(s):  
Active Sites ◽  
Charge Voltage ◽  
Desorption Process ◽  
Hierarchical Pores ◽  
Orbital Electron ◽  
Metal Organic ◽  
Air Battery ◽  
Successful Employment ◽  
Adsorption Desorption ◽  
Zinc Air Batteries

AbstractThe implementation of pristine metal-organic frameworks as air electrode may spark fresh vitality to rechargeable zinc-air batteries, but successful employment is rare due to the challenges in regulating their electronic states and structural porosity. Here we conquer these issues by incorporating ligand vacancies and hierarchical pores into cobalt-zinc heterometal imidazole frameworks. Systematic characterization and theoretical modeling disclose that the ligand editing eases surmountable energy barrier for *OH deprotonation by its efficacy to steer metal d-orbital electron occupancy. As a stride forward, the selected cobalt-zinc heterometallic alliance lifts the energy level of unsaturated d-orbitals and optimizes their adsorption/desorption process with oxygenated intermediates. With these merits, cobalt-zinc heterometal imidazole frameworks, as a conceptually unique electrode, empowers zinc-air battery with a discharge-charge voltage gap of 0.8 V and a cyclability of 1250 h at 15 mA cm–2, outperforming the noble-metal benchmarks.

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