DataVXACS Energy LettersPaper
journal article·2023-10-13

Constructing Magnetic Ion Accelerator at Na2/3Ni1/3Mn2/3O2 Surface for Sodium Ion Batteries

Shuwei Sun, Xiaoning Li, Liqin Yan, Weixin Chen, Xia Lu, Ying Bai

ACS Energy Letters· Volume 8· Issue 10
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Source abstract

Abstract

Surface ion transportation and structural stability are generally the key factors determining the electrochemical performance of a specific electrode for secondary batteries. Therefore, building an effective and stable interface layer becomes the bottleneck for long-life and high-performance batteries. This study is the first to design and construct a magnetic Fe 3 O 4 interfacial layer on the Na 2/3 Ni 1/3 Mn 2/3 O 2 surface. Preliminary analysis and calculations indicated that the the Fe 3 O 4 magnetic layer played a role as a surface ion accelerator, which effectively ameliorated the interfacial kinetic behavior through dispersing the aggregated ions at a tangential orientation under the Lorentz force. Electrochemical tests substantiated that the decorated cathode delivered a high capacity of 87 mA h g –1 and a capacity retention of 76% after 500 cycles under a rate of 5 C. This finding in the surface magnetic ion accelerator provides insight into efficient electrode design and applications of surface physical fields to enhance ion transportation and structural stability for advanced secondary batteries.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Supercapacitor Materials and Fabrication

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, School of Physics and Electronics, Henan University, Kaifeng 475004, P.R. China

School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore

Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China

School of Materials, Sun Yat-sen University, Guangzhou 510006, P. R. China

Funding

Science and Technology Innovation Talents in Universities of Henan Province · China Scholarship Council · National Natural Science Foundation of China · Zhong yuan Thousand Talents Program of Henan Province · Henan Overseas Expertise Introduction Center for Discipline Innovation · Science and Technology Development Project of Henan Province

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