<em>In Situ</em> Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries

William R. Brant; Siegbert Schmid; Guodong Du; Helen E. A. Brand; Wei Kong Pang; Vanessa K. Peterson; Zaiping Guo; Neeraj Sharma

doi:10.3791/52284

제자리 중성자 분말 회절에서 사용자 정의 - 만든 리튬 이온 배터리를 사용하여

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JoVE Journal Engineering

In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries

제자리 중성자 분말 회절에서 사용자 정의 - 만든 리튬 이온 배터리를 사용하여

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11:25 min

November 10, 2014

DOI: 10.3791/52284-v

William R. Brant¹, Siegbert Schmid¹, Guodong Du², Helen E. A. Brand³, Wei Kong Pang^2,4,5, Vanessa K. Peterson⁴, Zaiping Guo^2,5, Neeraj Sharma⁶

¹School of Chemistry,University of Sydney, ²Institute for Superconducting & Electronic Materials,University of Wollongong, ³Australian Synchrotron, ⁴Australian Nuclear Science and Technology Organisation, ⁵School of Mechanical, Materials, and Mechatronic Engineering,University of Wollongong, ⁶School of Chemistry,University of New South Wales

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Overview

This article details the design and construction of an electrochemical cell for in situ neutron powder diffraction (NPD) experiments. The procedure includes preparing electrodes and assembling the cell for effective analysis of electrode materials.

Key Study Components

Area of Science

Electrochemistry
Neutron Diffraction
Materials Science

Background

Electrochemical cells are essential for studying electrode materials.
In situ neutron powder diffraction provides valuable insights into material behavior.
Understanding cell design is crucial for effective experimentation.
Different designs can impact the quality of data obtained.

Purpose of Study

To develop a rechargeable electrochemical cell for NPD experiments.
To evaluate electrode materials using advanced diffraction techniques.
To compare various in situ NPD cell designs.

Methods Used

Preparation of a lithium foil negative electrode.
Application of positive electrode material onto a current collector.
Assembly of electrodes and separators in a cylindrical format.
Insertion of the cell into a vanadium can with electrolyte.

Main Results

The constructed cell is suitable for in situ NPD experiments.
Data analysis methods for in situ NPD are discussed.
Comparison of different cell designs highlights their advantages.

Conclusions

The developed electrochemical cell facilitates effective material analysis.
In situ NPD can provide critical insights into electrode behavior.
Future work may explore further optimizations in cell design.

Frequently Asked Questions

What is the purpose of the electrochemical cell?

The cell is designed for in situ neutron diffraction experiments to analyze electrode materials.

What materials are used in the cell construction?

Lithium foil, aluminum or copper sheets, and separators are used in the cell.

How is the positive electrode prepared?

A slurry of positive electrode material is spread over the current collector.

What is the significance of in situ neutron diffraction?

It allows for real-time analysis of material behavior under operational conditions.

What are the final steps in cell assembly?

The rolled cell is inserted into a vanadium can, electrolyte is added, and the can is sealed.

우리는 동일계 중성자 분말 회절 (NPD)에 이용 전극 재료의 시험을위한 전기 화학 전지의 설계와 구성을 기술한다. 우리는 간단히 현장 NPD의 셀 설계의 대안에 대해 언급하고이 세포를 사용하여 생산 현장 NPD 데이터에 대응하는 분석 방법에 대해 설명합니다.

이 절차의 전반적인 목표는 현장 중성자 회절 실험에 적합한 충전식 전기화학 셀을 준비하는 것입니다. 이것은 먼저 리튬 호일의 음극, 두 개의 분리기 및 알루미늄 또는 구리 시트를 준비하여 수행됩니다. 두 번째 단계는 셀의 집전체 역할을 할 알루미늄 또는 구리 시트 위에 양극 물질의 슬러리를 펴는 것입니다.

그런 다음 전극에 전선을 추가합니다. 다음으로, 분리막과 전극을 교대로 쌓은 다음 층을 실린더로 굴립니다. 마지막 단계는 압연된 셀을 바나듐 캔에 삽입하고, 전해질을 추가하고, 궁극적으로 현장 중성자 회절에 접근할 수 있는 와이어로 캔을 밀봉하는 것입니다.

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