狠狠撸

甑�毽诫秬瓴诫寑 鞐瓣惮韺�, 鞚挫皑鞝勳�� NCA 鞏戧饭鞛� 靹彪姤 鞝�頃� 頃滉硠 攴闺车頄堧嫟

- 瓿犽�检劚路毂勳垬膦� 甑愳垬 鈥� 甑�鞝滍暀靾犾�� <Journal of Materials Chemistry A> 瓴岇灛

- 瓿犿拡歆� NCA 鞏戧饭鞛� 甑�順勳潉 鞙勴暅 氙胳劯甑�臁� 雮� 攵堨垳氍� 鞝滌柎 旮办垹 臧滊皽

鈻�&苍产蝉辫;瓿犽�检劚 甑愳垬(鞓るジ飒� 鞎勲灅)鞕� 毂勳垬膦� 甑愳垬(鞕检�� 鞎勲灅) 霌� 鞐瓣惮韺� 靷�歆�.

甑�毽诫秬瓴诫尪那隀甑� 鞐瓣惮韺�鞚� 瓿犾棎雱堨�� 氚�霃� 鞚挫皑鞝勳��鞚� 頃奠嫭&苍产蝉辫;靻岇灛鞚� NCA(Ni0路80Co0路15Al0路05)&苍产蝉辫;巩戧饭鞛�鞚�&苍产蝉辫;甑�臁办爜&苍产蝉辫;瓴绊暔鞚�&苍产蝉辫;欷勋澊瓿�&苍产蝉辫;靹彪姤&苍产蝉辫;鞝赌顷�&苍产蝉辫;氍胳牅毳�&苍产蝉辫;顷搓舶顷�&苍产蝉辫;靾�&苍产蝉辫;鞛堧姅&苍产蝉辫;旮办垹鞚�&苍产蝉辫;臧滊皽頄堧嫟.

甑�毽诫抖年步雽�&苍产蝉辫;瓿犽�检劚(旮堨啀瓿淀暀鞝勱车),&苍产蝉辫;毂勋垬膦�(鞐愲剤歆赌頇旐暀靻岇灛鞝勱车)&苍产蝉辫;甑愳垬&苍产蝉辫;鞐瓣惮韺赌鞚赌&苍产蝉辫;狈颁础&苍产蝉辫;鞝勱惮觳�&苍产蝉辫;雮�&苍产蝉辫;鞚岇澊鞓�&苍产蝉辫;攵堨垳氍检潉&苍产蝉辫;鞝滉卑顷�&苍产蝉辫;靾�&苍产蝉辫;鞛堧姅&苍产蝉辫;鞚挫槰&苍产蝉辫;甑愴櫂&苍产蝉辫;旮半皹鞚�&苍产蝉辫;臧涤��&苍产蝉辫;旮办垹鞚�&苍产蝉辫;臧滊皽顷�&苍产蝉辫;旮办〈&苍产蝉辫;鞝涤“氩曥潣&苍产蝉辫;甑�臁办爜&苍产蝉辫;顷滉硠毳�&苍产蝉辫;攴闺车頄堧嫟.&苍产蝉辫;鞚�&苍产蝉辫;鞐瓣惮&苍产蝉辫;瓴瓣臣电�&苍产蝉辫;鞐愲剤歆赌&苍产蝉辫;氚�&苍产蝉辫;鞛�耄�&苍产蝉辫;攵勋暭鞚�&苍产蝉辫;靹戈硠鞝�&苍产蝉辫;顷欖垹歆赌鞚�&苍产蝉辫;闯辞耻谤苍补濒&苍产蝉辫;辞蹿&苍产蝉辫;惭补迟别谤颈补濒蝉&苍产蝉辫;颁丑别尘颈蝉迟谤测&苍产蝉辫;础&苍产蝉辫;(滨贵=9.5)鞚�&苍产蝉辫;2025云�&苍产蝉辫;13甓�&苍产蝉辫;23顺胳棎&苍产蝉辫;瓴岇灛霅愲嫟.

鞐瓣惮韺赌鞚�&苍产蝉辫;臧滊皽顷�&苍产蝉辫;鞚�&苍产蝉辫;瓿奠爼鞚赌&苍产蝉辫;旮办〈&苍产蝉辫;瓿奠爼鞐愳劀&苍产蝉辫;甑�臁办爜&苍产蝉辫;攵堨晥鞝曥劚鞚�&苍产蝉辫;鞙犽皽顷橂崢&苍产蝉辫;頇╈偘鞚挫槰(厂翱鈧劼�-) 旮半皹 攵堨垳氍检潉 須�瓿检爜鞙茧�� 鞝滉卑頃� NCA&苍产蝉辫;巩戧饭鞛�鞚�&苍产蝉辫;鞐错檾 順勳儊鞚� 鞏奠牅頃橁碃 鞝勱赴頇旐暀鞝� 鞎堨爼靹膘潉 雴掛澊電� 旮办垹鞚措嫟.

旮办〈&苍产蝉辫;頇╈偘鞐�&苍产蝉辫;旮半皹&苍产蝉辫;瓿奠龚氩曥溂搿�&苍产蝉辫;顷╈劚霅�&苍产蝉辫;狈颁础&苍产蝉辫;鞝勱惮觳措姅&苍产蝉辫;旄奠儊&苍产蝉辫;鞚挫��&苍产蝉辫;靾橃偘頇旊��(尝补测别谤别诲&苍产蝉辫;顿辞耻产濒别&苍产蝉辫;贬测诲谤辞虫颈诲别)&苍产蝉辫;甑�臁�&苍产蝉辫;雮挫棎&苍产蝉辫;頇╈偘鞚挫槰鞚�&苍产蝉辫;鞛旊�樓陿瓴�&苍产蝉辫;霅滊嫟.&苍产蝉辫;頇╈偘鞚挫槰鞚赌&苍产蝉辫;頉勋啀&苍产蝉辫;鞐挫矘毽�&苍产蝉辫;瓿检爼鞐愳劀&苍产蝉辫;毽�韸�瓿�&苍产蝉辫;氚橃潙顷�&苍产蝉辫;尝颈鈧係翱鈧勲ゼ&苍产蝉辫;顺曥劚顷橂┌&苍产蝉辫;鞚�&苍产蝉辫;瓿检爼鞐愳劀&苍产蝉辫;鞛呾瀽&苍产蝉辫;臧�&苍产蝉辫;鞚戩�戩澊&苍产蝉辫;鞙犽弰霅橁碃&苍产蝉辫;鞎堨爼鞝侅澑&苍产蝉辫;瓴办爼&苍产蝉辫;甑�臁�&苍产蝉辫;顺曥劚鞚�&苍产蝉辫;鞝赌顷措悳雼�.&苍产蝉辫;攴�&苍产蝉辫;瓴瓣臣&苍产蝉辫;鞝勱饭&苍产蝉辫;雮�&苍产蝉辫;攵赌氚橃潙鞚�&苍产蝉辫;歃濌皜鞁滍偆瓿�&苍产蝉辫;毽�韸�&苍产蝉辫;鞚挫槰鞚�&苍产蝉辫;頇曥偘鞚�&苍产蝉辫;鞝滍暅霅橃柎&苍产蝉辫;鞝勲皹鞝侅澑&苍产蝉辫;鞝勱赴頇旐暀&苍产蝉辫;靹彪姤&苍产蝉辫;鞝赌顷橂��&苍产蝉辫;鞚挫柎歆赌电�&苍产蝉辫;甑�臁办爜&苍产蝉辫;顷滉硠搿�&苍产蝉辫;鞛戩毄顷�&苍产蝉辫;鞕旊嫟.

鞚措ゼ&苍产蝉辫;顷搓舶顷橁赴&苍产蝉辫;鞙勴暣&苍产蝉辫;鞐瓣惮韺赌鞚赌&苍产蝉辫;鞐柬檾&苍产蝉辫;鞚挫槰(颁濒-)鞚�&苍产蝉辫;頇涤毄顷�&苍产蝉辫;鞚挫槰&苍产蝉辫;甑愴櫂&苍产蝉辫;鞝勲灥鞚�&苍产蝉辫;靸堧…瓴�&苍产蝉辫;霃勋瀰頄堧嫟.&苍产蝉辫;鞚�&苍产蝉辫;氚╈嫕鞚赌&苍产蝉辫;頇╈偘鞚挫槰鞚�&苍产蝉辫;靹犿儩鞝侅溂搿�&苍产蝉辫;鞝滉卑顷�&苍产蝉辫;鞝勱惮觳挫潣&苍产蝉辫;瓴办爼靹膘潉&苍产蝉辫;韥�瓴�&苍产蝉辫;雴掛澊瓿�,&苍产蝉辫;霃欖嫓鞐�&苍产蝉辫;攵赌氚橃潙鞚�&苍产蝉辫;氚涤儩&苍产蝉辫;臧赌电レ劚鞚�&苍产蝉辫;巩奠牅顷橂姅&苍产蝉辫;雿�&苍产蝉辫;靹标车頄堧嫟.&苍产蝉辫;瓿奠爼鞚�&苍产蝉辫;氤奠灐顷橃��&苍产蝉辫;鞎婌晞&苍产蝉辫;旮办〈&苍产蝉辫;鞝涤“&苍产蝉辫;瓿奠爼鞐�&苍产蝉辫;臧勲嫧颂�&苍产蝉辫;鞝侅毄顷�&苍产蝉辫;靾�&苍产蝉辫;鞛堨柎&苍产蝉辫;靷办梾&苍产蝉辫;顺勋灔鞐愳劀鞚�&苍产蝉辫;鞁れ毄靹标臣&苍产蝉辫;頇曥灔靹彪弰&苍产蝉辫;雴掚嫟电�&苍产蝉辫;鞝愳棎靹�&苍产蝉辫;欤茧�╇皼電旊嫟.

鞁ろ棙 瓴瓣臣, 鞚挫槰 甑愴櫂 氚╈嫕鞙茧�� 臧滌�堧悳 NCA&苍产蝉辫;巩戧饭鞛�鞚�&苍产蝉辫;鞖╇焿鞚� 196.5 mAh/g鞙茧�� 靻岇灛 氤胳棸鞚� 靹彪姤鞚� 鞎堨爼鞝侅溂搿� 甑�順勲悳 瓴冹溂搿� 頇曥澑霅愲嫟. 韸鬼瀳 靹彪姤 鞝�頃橃潣 欤检殧 鞗愳澑鞙茧�� 歆�氇╇悩電� 頇╈偘鞚挫槰 頃�霟夓澊 斓滊寑 80%旯岇�� 欷勳柎霌る┐靹� 瓴办爼 甑�臁瓣皜 鞎堨爼霅橁碃, 毽�韸� 鞚挫槰鞚� 鞚措彊 瓴诫�滉皜 攴犾澕頃橁矊 頇曤炒霃� 鞝勳泊鞝侅澑 鞝勱赴頇旐暀 靹彪姤 頄レ儊鞙茧�� 鞚挫柎臁岆嫟. 

臧滌�堧悳 NCA&苍产蝉辫;巩戧饭鞛�鞚�&苍产蝉辫;齑堦赴 炜�搿� 須�鞙�鞚� 臧滌�� 鞚挫爠鞚� 鞏戧饭鞛�氤措嫟 頄レ儊霅� 91.4%毳� 旮半�濏枅雼�. 150須� 於┞冯癌鞝� 頉� 鞖╇焿 鞙犾��鞙�霃� 鞎� 12% 雴掛晞鞝� 鞛リ赴 靾橂獏 韸轨劚鞚� 韥�瓴� 臧滌劆霅愱碃, 瓿犾啀 氚╈爠 臁瓣贝鞐愳劀霃� 鞎� 11%鞚� 靹彪姤 頄レ儊鞚� 雮橅儉雮� 於滊牓 韸轨劚霃� 頄レ儊霅� 瓴冹溂搿� 頇曥澑霅愲嫟. 

瓿犽�检劚&苍产蝉辫;甑愳垬电斺赌涤澊&苍产蝉辫;旮办垹鞚赌&苍产蝉辫;韸轨爼&苍产蝉辫;臁办劚鞚�&苍产蝉辫;狈颁础&苍产蝉辫;巩戧饭鞛�鞐愲��&苍产蝉辫;甑�頃滊悩歆�&苍产蝉辫;鞎婈碃&苍产蝉辫;雼れ枒顷�&苍产蝉辫;臁办劚鞚�&苍产蝉辫;鞚挫皑鞝勋��&苍产蝉辫;巩戧饭鞛�&苍产蝉辫;鞁涤姢韰涤棎霃�&苍产蝉辫;鞚戩毄&苍产蝉辫;臧赌电レ劚鞚�&苍产蝉辫;雴掚嫟.&苍产蝉辫;旮办〈&苍产蝉辫;狈颁础&苍产蝉辫;靻岇灛鞚�&苍产蝉辫;瓿犾湢&苍产蝉辫;靹彪姤鞚�&苍产蝉辫;氚╉暣顷橂崢&苍产蝉辫;甑�臁办爜&苍产蝉辫;顷滉硠毳�&苍产蝉辫;须�瓿检爜鞙茧��&苍产蝉辫;攴闺车顷�鞐�&苍产蝉辫;霐半澕,&苍产蝉辫;頄ロ泟&苍产蝉辫;於旉皜鞝侅澑&苍产蝉辫;臧涤��&苍产蝉辫;瓿奠爼鞚�&苍产蝉辫;韱淀暣&苍产蝉辫;氤措嫟&苍产蝉辫;雴掛潃&苍产蝉辫;靾橃��鞚�&苍产蝉辫;靹彪姤&苍产蝉辫;臧涤劆霃�&苍产蝉辫;臧赌电ロ暊&苍产蝉辫;瓴冹溂搿�&苍产蝉辫;鞝勲�澢隃雼�.鈥濍澕瓿�&苍产蝉辫;氚濏様雼�.&苍产蝉辫;

頃滍幐, 鞚措矆 鞐瓣惮電� 頃滉淡鞐瓣惮鞛�雼�(欷戩爯鞐瓣惮靻岇��鞗愳偓鞐�)瓿� 頃滉淡鞐愲剤歆�旮办垹韽夑皜鞗�(鞐愲剤歆�鞚鸽牓鞏戩劚靷�鞐�)鞚� 歆�鞗愳潉 氚涭晞 靾橅枆霅愲嫟. <攵赌瓴巾埇雿办澊>

鈻�&苍产蝉辫;Ni-rich NCA 鞝勱惮觳挫潣 鞚挫槰 甑愴櫂 鞝勲灥鞚� 韱淀暅 攵堨垳氍� 鞝滌柎 氚� 甑�臁� 鞎堨爼頇� 氇�鞁濍弰

狠狠撸 Research Team Overcomes Performance Degradation Limits of NCA Cathode Materials for Secondary Batteries

-Professors Ko Min-sung and Chae Soo-jong publish in the international journal <Journal of Materials Chemistry A>

-Developed impurity control technology in microstructure for high-quality NCA cathode implementation

A research team from 狠狠撸 has developed a technology that can reduce structural defects and resolve performance degradation issues in NCA(Ni0路80Co0路15Al0路05) cathode materials 鈥�&苍产蝉辫;a key component in high-energy-density secondary batteries.

Professors Ko Min-sung (Department of Metallurgical Engineering) and Chae Soo-jong (Department of Energy and Chemical Materials) led the team that developed an ion-exchange-based modification technique capable of removing anionic impurities in NCA precursors, successfully overcoming the structural limitations of conventional manufacturing methods.

This research was published in Volume 13, Issue 23 (2025) of the internationally renowned journal Journal of Materials Chemistry A (IF=9.5), which covers the fields of energy and materials science.

The process developed by the research team effectively removes sulfate ion (厂翱鈧劼�-)-based impurities 鈥�&苍产蝉辫;a major cause of structural instability in conventional synthesis methods 鈥�&苍产蝉辫;thereby suppressing the degradation of NCA cathode materials and enhancing their electrochemical stability.

In traditional sulfate-based co-precipitation methods, residual sulfate ions remain within the layered double hydroxide (LDH) structure of the synthesized NCA precursor. During subsequent heat treatment, these sulfate ions react with lithium to form lithium sulfate (Li鈧�SO鈧�), which promotes particle agglomeration and inhibits the formation of a stable crystalline structure. This leads to increased side reactions within the electrode and limits lithium-ion diffusion, ultimately resulting in decreased overall electrochemical performance 鈥�&苍产蝉辫;a long-standing structural limitation in NCA cathode production.

To address this issue, the research team introduced a novel ion-exchange strategy using chloride ions (Cl-). This method selectively removed sulfate ions, significantly enhancing the crystallinity of the precursor and successfully suppressing the occurrence of side reactions. Due to its simplicity, the process can be easily incorporated into existing manufacturing methods, making it highly practical and scalable for industrial applications.

Experimental results confirmed that the NCA cathode material modified through this ion-exchange approach achieved a capacity of 196.5 mAh/g, demonstrating the stable realization of its inherent performance. Notably, the sulfate ion content 鈥�&苍产蝉辫;identified as a major cause of performance degradation 鈥�&苍产蝉辫;was reduced by up to 80%, resulting in a more stable crystal structure and uniformly secured lithium-ion pathways, which led to an overall improvement in electrochemical performance.

The modified NCA cathode material recorded an improved initial coulombic efficiency of 91.4%, higher than that of the unmodified material. After 150 charge-discharge cycles, the capacity retention rate also increased by approximately 12%, demonstrating significantly enhanced long-term durability. In high-rate discharge conditions, performance improved by around 11%, indicating better output characteristics as well.

Professor Ko Min-seong stated, 鈥淭his technology is not limited to NCA cathode materials with a specific composition. It holds great potential for application in various types of cathode systems for secondary batteries. By effectively overcoming the structural limitations that previously hindered the intrinsic performance of NCA materials, further performance enhancements are expected through additional modification processes.鈥�

This research was supported by the National Research Foundation of Korea (Key Research Institute Support Program) and the Korea Institute of Energy Technology Evaluation and Planning (Energy Human Resource Development Program). <Pukyong Today>