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ニッケルカドミウム電池(NiCd)

1899
  • Waldemar Jungner
Nickel-Cadmium battery showcasing electrochemical properties and applications in electronics.

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Invented by Waldemar Jungner in 1899, the NiCd battery uses nickel oxide hydroxide (NiO(OH)) as the positive electrode and metallic cadmium (Cd) as the negative electrode, with an alkaline electrolyte like potassium hydroxide (KOH). It is known for its long cycle life and good performance at low temperatures, but suffers from the 記憶効果 そしてカドミウムの毒性。

ニッケルカドミウム電池は、 lead-acid battery, offering a higher energy density and a much longer cycle life in a sealed, maintenance-free package. Waldemar Jungner’s invention provided a robust and reliable power source that became dominant in portable applications for much of the 20th century. The core chemical reaction during discharge is [latex]2 NiO(OH) + Cd + 2 H_2O rightarrow 2 Ni(OH)_2 + Cd(OH)_2[/latex].

The use of an alkaline electrolyte, typically potassium hydroxide, was a key difference from the acidic electrolyte of 鉛蓄電池 cells. This chemistry allowed for a very flat discharge voltage curve, meaning the battery delivered a nearly constant voltage until it was almost fully depleted. However, its major drawbacks led to its decline. Cadmium is a heavy metal with significant environmental toxicity, making disposal and recycling a critical issue. Furthermore, NiCd batteries are prone to the ‘memory effect,’ where repeated partial discharge/charge cycles can cause a reduction in usable capacity. This necessitated periodic full discharge cycles to maintain performance. Despite being largely replaced by NiMH and Li-ion technologies in consumer goods, its durability ensures it remains in some niche industrial and aviation applications.

UNESCO Nomenclature: 2204
電気化学

タイプ

物理デバイス

混乱

実質的な

使用法

ニッチ/専門分野

前駆物質

  • ガストン・プランテの鉛蓄電池(1859年)
  • 開発 alkaline electrolytes
  • トーマス・エジソンのニッケル鉄電池に関する研究(1901年)は、同様の陰極化学を共有していた。

アプリケーション

  • 初期のコードレス電動工具
  • 非常用照明システム
  • 模型飛行機とボート
  • リチウムイオン電池以前の携帯電子機器
  • 航空機用バッテリー

特許:

NA

潜在的なイノベーションのアイデア

  • cadmium-free NiCd-like batteries using alternative negative electrodes
  • advanced recycling methods to safely recover cadmium and nickel
  • nanostructured electrodes to mitigate memory effect
  • solid-state alkaline electrolytes for improved safety
  • hybrid NiCd-supercapacitor devices for high power burst applications
  • smart chargers with reconditioning cycles to reverse memory effect automatically
  • bio-leaching processes for eco-friendly metal recovery from spent batteries
  • flexible NiCd batteries for ウェアラブル テクノロジー
  • high-temperature NiCd variants for geothermal or aerospace sensors
  • miniaturized NiCd cells for implantable medical devices requiring long-term reliability
Related to: NiCd, nickel-cadmium, Waldemar Jungner, 記憶効果, alkaline battery, cadmium, nickel oxide hydroxide, rechargeable, cycle life, portable electronics.

歴史的背景

ニッケルカドミウム電池(NiCd)

1890
1895
1895
1899
1900
1900
1900
1890
1895
1895
1896
1900
1900
1900
1900

(日付が不明または関連性がない場合、例えば「流体力学」などでは、その注目すべき出現時期の概算値が提示されます。)

10年目 周年

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