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閿傞噾灞炴嫢鏈夊崄鍊嶄簬浼犵粺鐭沖ⅷ鐢墊瀬鐨勬瘮瀹歸噺錛屽叾鎷ユ湁瓚呴珮鐞嗚瀹歸噺 錛?/span>3860 mAh g-1錛夊拰鏋佷綆鐨勭數(shù)鍖栧鐢?shù)鍔?/span> 錛?/span>-3.04 V vs. 鏍囧噯姘㈢數(shù)鏋侊級(jí)銆傚洜姝わ紝琚叕璁や負(fù)鏄姪鍔涗笅涓浠ｉ攤鐢墊睜瀹炵幇鑳介噺瀵嗗害楂樹簬500 Wh/kg鐩爣涓渶鏈夊笇鏈涚殑璐熸瀬鏉愭枡銆傜劧鑰岋紝閿傞噾灞炶〃闈㈢敱浜庢灊鏅剁殑鐢熼暱鍜屾樉钁楃殑浣撶Н鍙樺寲鑰岀敓鎴愮殑涓嶇ǔ瀹氱殑SEI鑶滄槸瀵艱嚧閿傞噾灞炵數(shù)姹犱綆鐨勫簱浼︽晥鐜囥佸驚鐜ц兘蹇熻“閫銆佺數(shù)瑙ｆ恫娑堣椼佺敋鑷沖埡絀塊殧鑶滅煭璺殑涓昏鍥犵礌銆傜爺絀惰〃鏄庯紝瀵歸攤閲戝睘琛ㄩ潰榪涜鐣岄潰澶勭悊錛屾槸鎻愰珮鐢墊睜鎬ц兘銆佸疄鐜伴珮鑳介噺瀵嗗害鐨勬湁鏁堟柟寮忋傝繎鏈熷叧浜庨攤閲戝睘鐣岄潰鐨勮璁″線寰闆嗕腑浜庡紩鍏ラ挐鍖栦繚鎶ゅ眰浣滀負(fù)閿傞噾灞炴矇縐殑緙撳啿鍖哄煙錛屽湪淇濊瘉鐗╃悊鍖栧鐩稿鎬х殑鍓嶆彁涓嬮氳繃鎺у埗閿傜瀛愭祦鏉ヨ幏寰楁洿鍧囧寑鐨勯攤娌夌Н榪囩▼銆傝繖鏍風(fēng)殑鐣岄潰淇濇姢灞傞氬父浼?xì)寮曞叆涓瀹氳川閲忥紝寰寰瓚呰繃閿傞噾灞炶啘鏈韓鐨勮川閲忥紝鍥犳涓瀹氱▼搴︿笂鐗虹壊浜?jiǎn)閿傞噾灞炲甫鏉ョ殑鑳介噺瀵嗗害浼樺娧潃傞氳繃棰勫鐞嗙敓鎴愮ǔ瀹氬彲闈犵殑SEI鑶滀紭鍖栭攤閲戝睘鐨勬柟寮忛矞鏈夋姤閬撱?/span>


榪戞棩錛屽▉鏂悍鏄熷ぇ瀛﹀瘑灝?dāng)娌冨熀鍒嗘?span style="font-family:Calibri;">Junjie Niu璇鵑緇勭殑鐮旂┒浜哄憳鍦ㄩ攤閲戝睘鐢墊瀬鐨勪紭鍖栨柟闈㈠彇寰楁樉钁楄繘灞曘傞氳繃鍦?span style="font-family:Calibri;">30寰背鍘氱殑瓚呰杽閿傞噾灞炶〃闈㈢殑鍘熶綅鍖栧鍙嶅簲鐢熸垚鍖呭惈閿傜洂涓庢湁鏈烘煍鎬ч珮鍒嗗瓙鏉愭枡鐩哥粨鍚堬紝鏋勫緩鍏鋒湁紼沖畾鏈烘鎬ц兘鍜岀數(shù)鍖栧鎬ц兘鐨勪漢宸?span style="font-family:Calibri;">SEI鑶滐紝瀹炵幇閿傞噾灞炵數(shù)鏋佹樉钁楁彁楂樼殑寰幆鎬ц兘銆傚湪姝ょ粨鏋勪腑錛屾湁鏈烘煍鎬ч珮鍒嗗瓙錛堣仛姘ㄥ熀鑵堬級(jí)緗戠粶鏈夊姪浜庨攤閲戝睘閫傚簲浣撶Н鍙樺寲閫犳垚鐨勫脊鎬у艦鍙橈紝鏈夋晥閬垮厤寰幆榪囩▼涓鐥曠殑褰㈡垚銆傚墠椹變綋涓庤秴钖勯攤閲戝睘鍙嶅簲褰㈡垚鐨勯噾灞?span style="font-family:Calibri;">-鏈夋満-鐩?span style="font-family:Calibri;">LiCN鍙湪閿傞噾灞炰笌浜哄伐SEI鑶滀箣闂村艦鎴愮揣瀵嗚岀ǔ瀹氱殑榪炴帴銆傚悓鏃訛紝鍧囧寑鍒嗗竷鐨勬棤鏈洪攤鐩愬拰姘熷寲閿傚彲鏈夋晥鎻愰珮紱誨瓙鐢?shù)瀵肩巼锛屾湁鍔╀簬迮炴垚鏇磋杽鐨劷E沖畾鐨?span style="font-family:Calibri;">SEI錛屼粠鑰屽噺灝戝驚鐜繃紼嬩腑閿傜瀛愮殑鎹熷け銆傚湪XPS娣卞害鍥捐氨琛ㄥ緛涓紝鍚愛鍩哄洟鐨勬煍鎬ч珮鍒嗗瓙緗戠粶璐┛鏁翠釜浜哄伐SEI鑶滀笂琛ㄩ潰錛屾繁鍏ヨ〃闈㈢害70綰崇背錛涙棤鏈洪攤鐩?span style="font-family:Calibri;">LiTFSI璐┛鏁翠釜浜哄伐SEI鑶滆嚦220 綰崇背錛涙盁鍖栭攤鏇存槸宓屽叆閿傞噾灞炲唴閮ㄦ暟鐧劇撼綾熾傚湪鐢墊睜嫻嬭瘯涓紝浜哄伐SEI鑶滈澶勭悊閿傞噾灞炵數(shù)鏋佸彲鍦?span style="font-family:Calibri;">3mA/cm2鐢墊祦瀵嗗害涓嬪驚鐜?span style="font-family:Calibri;">2000灝忔椂鍚庡疄鐜?span style="font-family:Calibri;">80mV鐨勪綆榪囩數(shù)浣嶃備綔涓哄鐓э紝鏈鐞嗛攤閲戝睘鐢墊瀬鍦ㄧ浉鍚岀數(shù)嫻佸瘑搴︿笅寰幆300灝忔椂鍚庡嚭鐜扮煭璺傜爺絀跺湪璐數(shù)瑙ｆ恫鏉′歡涓?nbsp;錛堝彲杈懼埌楂樿兘閲忓瘑搴︼級(jí)鍙戠幇浜哄伐SEI鑶滄湁鏁堝歡緙撲簡(jiǎn)閿傞噾灞炲鐢?shù)瑙ｆ恫鐨勬秷鑰椼備簬姝ゅ悓鏃訛紝浣跨敤浜哄伐SEI棰勫鐞嗛攤閲戝睘涓鴻礋鏋佺殑瀹歸噺涓?span style="font-family:Calibri;">300mAh鐨勮蔣鍖呯數(shù)姹犲彲鍦ㄥ驚鐜?span style="font-family:Calibri;">150嬈″悗淇濈暀81%浠ヤ笂鐨勫閲忥紝榪滈珮浜庝嬌鐢ㄦ湭澶勭悊閿傞噾灞炵數(shù)鏋佺殑鍚屽閲忚蔣鍖呯數(shù)姹犮?/span>

鍥?span style="font-family:Calibri;">1. 錛?span style="font-family:Calibri;">a錛変漢宸?/span>SEI鐨勫埗澶囪繃紼嬩互鍙?qiáng)涓幘l撴瀯銆傞攤閲戝睘琛ㄩ潰涓庯紙b錛?/span>CAN鍜岋紙c錛?/span>ACN, LiTFSI錛?span style="font-family:Calibri;">HFE娣峰悎婧舵恫鍙嶅簲鍚庣殑SEM鐓х墖銆傚驚鐜繃紼嬩腑鍦紙d錛夋湭澶勭悊閿傞噾灞炶〃闈㈠拰錛?span style="font-family:Calibri;">e錛変漢宸?span style="font-family:Calibri;">SEI棰勫鐞嗛攤閲戝睘琛ㄩ潰SEI鐨勫艦鎴愯繃紼嬪強(qiáng)緇撴瀯銆?/span>


鍥?span style="font-family:Calibri;">2. 錛?span style="font-family:Calibri;">a錛変漢宸?span style="font-family:Calibri;">SEI棰勫鐞嗗悗鐨勯攤閲戝睘琛ㄩ潰鐨?/span> STEM ADF鐓х墖鐩稿簲鐨勫厓绱犲垎甯冨浘銆傦紙b錛?span style="font-family:Calibri;">HRTEM紜浜哄伐SEI涓?span style="font-family:Calibri;">LiF鍜?span style="font-family:Calibri;">LiCN鐨勫艦鎴愩傦紙c-f錛?span style="font-family:Calibri;">Li錛?span style="font-family:Calibri;">C錛?span style="font-family:Calibri;">N錛屽拰F K-edge鐨?span style="font-family:Calibri;">EELS鍥捐氨銆傦紙g錛夋湭澶勭悊閿傞噾灞炶〃闈笌錛?span style="font-family:Calibri;">h錛変漢宸?span style="font-family:Calibri;">SEI棰勫鐞嗛攤閲戝睘琛ㄩ潰鐨?span style="font-family:Calibri;">XPS鍥捐氨銆?/span>

鍥?span style="font-family:Calibri;">3. 寰幆鍚庣殑浜哄伐SEI棰勫鐞嗛攤閲戝睘琛ㄩ潰鐨?span style="font-family:Calibri;">XPS娣卞害鍥捐氨銆?/span>

鍥?/span>4. 錛?/span>a-c錛夋湭澶勭悊閿傞噾灞炲拰錛?/span>d-f錛変漢宸?/span>SEI棰勫鐞嗛攤閲戝睘寰幆榪囩▼紺烘剰鍥懼強(qiáng)鍦?/span>1.0 mA/cm2鐢墊祦瀵嗗害銆?/span>1.0 mAh/cm2鑳介噺瀵嗗害涓嬬殑闀閿傚拰鍓ョ鍚庣殑SEM鐓х墖銆備漢宸?/span>SEI棰勫鐞嗛攤閲戝睘鍒嗗埆鍦紙g,i錛?/span>3.0 mA/cm2鐢墊祦瀵嗗害銆?/span>3.0 mAh/cm2鑳介噺瀵嗗害涓嬶紝鍜岋紙h,j錛?/span>5.0 mA/cm2鐢墊祦瀵嗗害銆?/span>5.0 mAh/cm2鑳介噺瀵嗗害涓嬬殑闀閿傚拰鍓ョ鍚庣殑SEM鐓х墖銆傦紙k,l錛夋湭澶勭悊閿傞噾灞炲拰錛?/span>m,n錛変漢宸?/span>SEI棰勫鐞嗛攤閲戝睘寰幆鍓嶅悗鐨?/span>3D琛ㄩ潰褰㈣矊銆?/span>

鍥?span style="font-family:Calibri;">5. 錛?span style="font-family:Calibri;">a-d錛?span style="font-family:Calibri;">3.0 mA/cm2鐢墊祦瀵嗗害銆?/span>3.0 mAh/cm2鑳介噺瀵嗗害涓嬬殑寰幆鎬ц兘銆傦紙e錛夋湭澶勭悊閿傞噾灞炰笌錛?span style="font-family:Calibri;">f錛変漢宸?span style="font-family:Calibri;">SEI棰勫鐞嗛攤閲戝睘浜ゆ祦闃繪姉鍥俱傦紙g錛夐鍦堝驚鐜墠鍚?span style="font-family:Calibri;">NPV鍥俱?/span>

鍥?span style="font-family:Calibri;">6. NCA涓庯紙a,b錛夋湭澶勭悊閿傞噾灞烇紝錛?/span>c,d錛?/span> SEI棰勫鐞嗛攤閲戝睘錛?/span>10.0 vol% ACN錛夛紝錛?/span>e,f錛?/span> SEI棰勫鐞嗛攤閲戝睘錛?/span>20.0 vol% CAN錛夊湪1.25 ?L/mAh錛?/span>2.5 ?L/mAh錛屽拰5.0?L/mAh鐨勮傳鐢?shù)瑙ｈ川鐘舵佷笅鐨勫驚鐜ц兘錛屼互鍙?qiáng)鍦?span style="font-family:Calibri;">5.0 ?L/mAh鐢?shù)瑙ｈ川鐘舵佷笅絎?span style="font-family:Calibri;">1錛岀5錛岀20錛屽拰絎?span style="font-family:Calibri;">50鍦堢殑鍏呮斁鐢墊洸綰褲?br />


緇撳悎鏈夋満-鏃犳満鏉愭枡鐨勯珮鎬ц兘浜哄伐SEI鑶滅殑鏋勫緩鍙湁鏁堟彁楂橀攤閲戝睘鐢墊瀬鐨勬ц兘錛屼負(fù)鏇村彲闈犵殑銆佹洿瀹夊叏鐨勯珮鑳介噺瀵嗗害閿傜數(shù)姹犵數(shù)鏋佺殑璁捐涓庣爺鍙戞彁渚涗簡(jiǎn)鏂扮殑鎬濊礬銆傜浉鍏崇爺絀舵垚鏋滃凡鍙戣〃鍦ㄣ?strong>ACS Applied Materials & Interfaces銆嬫湡鍒婏紝棰樹負(fù)鈥?/span>Pre-Solid Electrolyte Interphase-Covered Li Metal Anode with Improved Electro-Chemo-Mechanical Reliability in High-Energy Density Batteries鈥?/span>(DOI: 10.1021/acsami.1c05966)銆傞櫎Junjie Niu鏁欐巿澶栵紝浣滆呰繕鍖呮嫭闄堝笇鍗氬＋鍜屽皻鏄庝紵鍗氬＋銆?br />

鐩稿叧閾炬帴

https://doi.org/10.1021/acsami.1c05966


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