バ イア ス マ ニ ピュレ ータ・ホ ル ダ ー

Nano-Probing and Electrical Biasing at the Atomic Scale

バ イア ス マ ニ ピュレ ータ・ホ ル ダ ー
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技術仕様

1800 Series
Coarse Movement Range
   X axis
 > 1000 µm
   Y and Z axes
 500 – 1000 µm
Fine Movement Range
  X axis 2 – 3 µm
  Y and Z axes     ~ 40 µm
Electrical Contacts 2 standard  (3 – 7)*
Current Resolution 100 pA standard (< 10 pA)*
Sample Compatibility 3 mm half grids, FIB lift-out grids, or custom*
TEM Compatibility TFS/FEI, JEOL, Hitachi

*Contact us for optional availability and custom configurations

特徴

注目の研究

固体電池のためのリチウム界面のその場TEMプロービング

北米トヨタ研究所とペンシルバニア大学の研究者らは、ハミングバード・サイエンティフィックのその場TEM用バイアスマニピュレータ・ホルダーを用いて、空気に敏感なリチウム金属を新しい固体電解質に接触させ、リチウムの充放電サイクルにおける劣化機構を観察する実験を行いました。その結果、チオリン酸リチウム（LPS）電解質との反応により、リチウム金属にデンドライト（樹枝状突起）と剥離が発生することが確認されました。しかし、同じ電解質にヨウ化リチウムをドープすると、ドーパントが保護的な役割を果たし、このような劣化を防ぐことができる事が確認されました。これにより、リチウムサイクル容量が向上します。本ホルダーのその場TEM操作とバイアス機能は、ナノ構造電池材料の基礎的理解と微細構造の進化を加速し、より優れた電池を開発することを可能にします。

図: リチウム金属に対する固体LPS電解質のその場プロービングで、充放電サイクル中のリチウム樹枝状成長および剥離を示す。 

画像著作権 © 2020 米国化学会 

参考文献 Singh et al. Chem. Mater. 2020, 32, 17, 7150–7158.  DOI: 10.1021/acs.chemmater.9b05286

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Video Spotlight

In-situ TEM of microstructural evolution in composite solid-state Li-ion batteries during charge/discharge cycles

Researchers at the University of Central Florida (UCF) have studied the structural integrity of a novel composite electrode composed of a polymer-derived ceramic nanoparticle and edge-functionalized graphene oxide during electrochemical lithiation and delithiation cycles.

They assembled a prototype nanobattery cell with a lithium metal and a SiCNO composite electrode and performed in-situ TEM lithation and delithation for at least two cycles using Hummingbird Scientific’s Biasing Manipulator TEM holder. The observed results demonstrated extraordinary structural stability of the SiCNO nanoparticles with only a 9.36% linear expansion during the lithiation (See Movie on the Left).

Movie Copyright © 2021 American Chemical Society

Reference: Zhang et al.;  ACS Appl. Mater. Interfaces 2021, 13, 8, 9794–9803. https://doi.org/10.1021/acsami.0c19681

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