nucВестник НЯЦ РКNNC RK Bulletin1729-75161729-7885Национальный ядерный центр Республики Казахстан10.52676/1729-7885-2025-1-38-45nuc-756Research ArticleСтатьиИЗУЧЕНИЕ ВЛИЯНИЯ ВЫБОРА СВЯЗУЮЩЕГО МАТЕРИАЛА НА ЭЛЕКТРОХИМИЧЕСКИЕ СВОЙСТВА АНОДОВ НА ОСНОВЕ LaNi5STUDY OF THE EFFECT OF BINDER MATERIAL CHOICE ON THE ELECTROCHEMICAL PROPERTIES OF LaNi5 BASED ANODEShttps://orcid.org/0009-0000-0662-6950МәлікС. Д.MalikS. D.

Алматы

Almaty

seilbekmalik@gmail.comhttps://orcid.org/0000-0002-5985-9050ӘбдімомынС. К.AbdimomynS. K.

Алматы

Almaty

abdimomyn03@gmail.ruhttps://orcid.org/0000-0003-3716-8846СкаковМ. К.SkakovM. K.

Курчатов

Kurchatov

skakov@nnc.kzhttps://orcid.org/0000-0002-4675-1067КоянбаевЕ. Т.KoyanbayevYe. T.

Курчатов

Kurchatov

erbol@nnc.kzhttps://orcid.org/0000-0002-2188-8075МиниязовА. Ж.MiniyazovA. Zh.

Курчатов

Kurchatov

miniyazov@nnc.kzhttps://orcid.org/0000-0001-6381-0738МальчикФ. И.MalchikF. I.

Алматы

Almaty

frodo-007@mail.ruКазахский национальный университет им. аль-ФарабиКазахстанal-Farabi Kazakh National UniversityKazakhstanРГП «Национальный ядерный центр Республики Казахстан»КазахстанRSE “National Nuclear Center of the Republic of Kazakhstan”KazakhstanФилиал «Институт атомной энергии» РГП НЯЦ РККазахстанBranch “Institute of Atomic Energy” RSE NNC RKKazakhstan202501042025013845Copyright © Мәлік С.Д., Әбдімомын С.К., Скаков М.К., Коянбаев Е.Т., Миниязов А.Ж., Мальчик Ф.И., 20252025Мәлік С.Д., Әбдімомын С.К., Скаков М.К., Коянбаев Е.Т., Миниязов А.Ж., Мальчик Ф.И.Malik S.D., Abdimomyn S.K., Skakov M.K., Koyanbayev Y.T., Miniyazov A.Z., Malchik F.I.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://journals.nnc.kz/jour/article/view/756

В условиях растущих требований к экологичности и эффективности систем хранения энергии никель-металлгидридные (Ni-MH) аккумуляторы продолжают привлекать внимание благодаря своей безопасности и доступности. Оптимизация компонентов таких аккумуляторов является приоритетной задачей для повышения их электрохимических характеристик и долговечности. Одним из ключевых компонентов являются аноды на основе гидрид образующего сплава, электрохимические свойства которых, такие как стабильность и ёмкость, в значительной мере зависят от выбора связующего материала, влияющего на структурную целостность, проводимость и устойчивость анода при циклическом заряде и разряде. В данной работе исследовано влияние различных полимерных связующих на электрохимические свойства анодов на основе LaNi5 для Ni-MH аккумуляторов. Сплав LaNi5 был синтезирован твердофазным методом из оксидов металлов, структура которого была подтверждена методом рентгенофазового анализа. Для исследования были изготовлены электроды с использованием трех типов связующих: политетрафторэтилена (PTFE), поливинилиденфторида (PVdF) и ультрадисперсного полиэтилена (PE). Электрохимические характеристики анодов изучались методами циклической вольтамперометрии и гальваностатического заряда-разряда. Результаты показали, что тип связующего существенно влияет на электропроводность, емкость и циклическую стабильность электродов. Аноды со связующим PTFE продемонстрировали наилучшие электрохимические характеристики с высокой удельной емкостью (~200 мА·ч/г) и стабильностью при многократном циклировании. Электроды с PE показали высокую начальную емкость, но быструю деградацию при циклировании, а аноды с PVdF характеризовались стабильной, но низкой емкостью. Исследование подтверждает, что выбор связующего материала имеет решающее значение для оптимизации производительности Ni-MH аккумуляторов. 

With growing demands for environmental sustainability and efficiency in energy storage systems, nickel-metal hydride (Ni-MH) batteries continue to attract attention due to their safety and affordability. Optimization of components in such batteries is a priority task for improving their electrochemical characteristics and durability. One of the key components is anodes based on hydrogen-forming alloys, whose electrochemical properties, such as stability and capacity, significantly depend on the choice of binder material, which affects the structural integrity, conductivity, and resilience of the anode during cyclic charging and discharging. This paper investigates the influence of various polymer binders on the electrochemical properties of anodes based on LaNi5 for Ni-MH batteries. The LaNi5 alloy was synthesized using the solid-phase method from metal oxides, and its structure was confirmed by X-ray phase analysis. Electrodes were fabricated using three types of binders: polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVdF), and  polyethylene (PE). The electrochemical characteristics of the anodes were studied using cyclic voltammetry and galvanostatic charge-discharge methods. Results showed that the type of binder substantially affects the electrical conductivity, capacity, and cycling stability of the electrodes. Anodes with PTFE binder demonstrated the best electrochemical characteristics, high specific capacity (~200 mAh/g), and stability during multiple cycling. Electrodes with PE showed high initial capacity but rapid degradation during cycling, while anodes with PVdF were characterized by stable but low capacity. The study confirms that the choice of binder material is crucial for optimizing the performance of Ni-MH batteries. 

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The authors declare that there are no conflicts of interest present.