DataVXACS Applied Energy MaterialsPaper
journal article·2020-07-27

Conversion Reaction in the Binder-Free Anode for Fast-Charging Li-Ion Batteries Based on WO3 Nanorods

Raman Bekarevich, Yuriy Pihosh, Yoshinori Tanaka, Kei Nishikawa, Yoshitaka Matsushita, Takanobu Hiroto, Hirohito Ohata, Takahisa Ohno, Tsutomu Minegishi, Masakazu Sugiyama, Takehiko Kitamori, Kazutaka Mitsuishi, Kazunori Takada

ACS Applied Energy Materials· Volume 3· Issue 7
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Source abstract

Abstract

The development of lithium-ion batteries (LIBs) with high-energy densities faces challenges to meet the ever-growing market demands. Tungsten oxide (WO3) with high theoretical capacity and low cost is a potential replacement for conventional graphite anodes, whose low reversible capacity limits the energy densities of existing LIBs. However, large volumetric changes during the cycling result in the degradation of WO3-based electrodes. Hence, we integrated an anode based on vertically aligned WO3 nanorods with a current collector. The controlled geometry of binder-free anodes minimized volumetric expansion effects and conferred high mechanical stability proven by stable cycling performance up to a rate of 3 C without disintegration. Ex situ X-ray diffraction and electron microscopy analyses supported by theoretical calculations revealed the appearance of the intermediate active phases during conversion reaction.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storageNanomaterials

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research

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

Affiliations

Research Center for Advanced Measurement and Characterization, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0051, Japan

Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan

Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8904, Japan

Center for Green Research on Energy and Environmental Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan

Materials Analysis Station, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0051, Japan

International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan

Funding

Advanced Low Carbon Technology Research and Development Program · National Institute for Materials Science · Yazaki Memorial Foundation for Science and Technology

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