DataVXACS Energy LettersPaper
journal article·2019-07-12

Scalable and Economic Synthesis of High-Performance Na3V2(PO4)2F3 by a Solvothermal–Ball-Milling Method

Hongming Yi, Le Lin, Moxiang Ling, Zhiqiang Lv, Rui Li, Qiang Fu, Huamin Zhang, Qiong Zheng, Xianfeng Li

ACS Energy Letters· Volume 4· Issue 7
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Source abstract

Abstract

Na3V2(PO4)2F3 has been emerging as one of the most promising cathodes for sodium-ion batteries due to its stable NASICON structure and fast Na+ diffusion. However, present methods for preparation of Na3V2(PO4)2F3 suffer from either high energy consumption or generating poor rate performance. Herein, a cost-effective solvothermal–ball-milling method is proposed to solve the problem. In the solvothermal process, the morphology of Na3V2(PO4)2F3 varies from 0D to 3D with changing pH, in which 3D Na3V2(PO4)2F3 at pH = 3 shows optimal purity due to the fastest growth rate. With Ketjenblack (KB) coating by short-time ball-milling, the Na3V2(PO4)2F3 can be further nanosized with a highly graphited carbon coating layer. The purest Na3V2(PO4)2F3@KB from pH = 3 exhibited an initial capacity of 138 mAh g–1 @ 0.5 C and 122 mAh g–1 @ 40 C. Moreover, ultrahigh dosage over an 80 mmol of V source in one 100 mL Teflon-lined autoclave has been achieved for the first time.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storageNanomaterials

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Chemical Synthesis and Characterization

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

Affiliations

Division of Energy Storage, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, People’s Republic of China

University of Chinese Academy of Sciences, Beijing 100039, People’s Republic of China

State Key Laboratory of Catalysis, CAS Center for Excellence in Nanoscience, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, People’s Republic of China

School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People’s Republic of China

Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Dalian 116023, People’s Republic of China

Funding

the Strategic Priority Research Program of the Chinese Academy of Sciences

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