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褰撳墠浣嶇疆錛?棣栭〉 >> 璧勮 >> 澶嶅悎鏉愭枡 >> 琛屼笟鍔ㄦ?/a> >> 姝ｆ枃

榪戞棩錛屽崡浜伐涓氬ぇ瀛?/span>鍥烘佺瀛愪笌鏂拌兘婧愭妧鏈棰樼粍鍒╃敤涓縐嶆湁鏁堢殑涓ゆ鐩稿弽搴旀硶鏋勫緩鍑洪珮瀵肩數(shù)鎬с侀珮媧繪х殑鍗曢挋閽涚熆鍌寲鍓傦紝鎺㈢儲浜嗚縐嶆柟娉曞湪鎻愬崌閽欓挍鐭垮湪姘ф瀽鍑猴紙OER錛変笌姘㈡瀽鍑猴紙HER錛夋椿鎬т腑鐨勪綔鐢ㄤ互鍙婄數(shù)鑽峰啀鍒嗗竷瀵瑰偓鍖栨椿鎬х殑褰卞搷銆?/span>鐩稿叧鎴愭灉浠ユ爣棰樹負鈥?/span>Engineering Charge Redistribution within Perovskite Oxides for Synergistically Enhanced Overall Water Splitting鈥?/span>鍙戣〃鍦?/span>ACS Materials Letters銆傚崡浜伐涓氬ぇ瀛﹀崥澹爺絀剁敓鐜嬩範涔犱負璁烘枃絎竴浣滆呫?/span>閫氳浣滆咃細鍛ㄥ憚鏁欐巿錛岄偟瀹楀鉤鏁欐巿銆?/span>


鍥?/span>1鍩虹琛ㄥ緛銆傦紙a錛変袱姝ョ浉鍙嶅簲娉曞埗澶囪繃紼嬬ず鎰忓浘錛?/span>(b) XRD錛?/span>(c)SEM錛?/span>(d) HRTEM鍜?/span>(e) 鍏冪礌鍒嗗竷銆?/span>

璇ュ伐浣滈氳繃涓ゆ鐩稿弽搴旀硶鑱斿悎鍏冪礌鎺烘潅鍒跺寰楀埌鍗曢挋閽涚熆LSFCP-55錛屽鍥?/span>1a鎵紺猴紝棣栧厛鍚堟垚浜嗛挋閽涚熆LSF錛岀劧鍚庣浜屾寮曞叆涓?/span>LSF涓瀹氭瘮渚嬬殑SCP (SrCO3銆?/span>Co3O4銆?/span>NH4H2PO4)銆傚湪鐩稿弽搴旇繃紼嬩腑錛岃繖浜涚瀛愬湪楂樻俯涓嬮氳繃閽欓挍鐭?/span>LSF琛ㄩ潰榪呴熸墿鏁ｅ埌鍏朵綋鐩革紝鏈緇堝艦鎴愰挋閽涚熆LSFCP-55銆傞氳繃XRD銆?/span>SEM鍜?/span>HRTEM琛ㄥ緛錛岃瘉鏄庤縐嶆柟娉曞緱鍒扮殑閽欓挍鐭塊綺掓洿灝忥紝騫朵笖鎵闇鐨勭厖鐑ф俯搴︽洿浣庛?/span>姝ゅ錛岄氳繃姝ょ鏂規(guī)硶鍒跺鐨?/span>LSFCP-55鍏鋒湁杈冮珮鐨勭數(shù)瀵肩巼錛?/span>94.2 S cm-1錛夛紝榪滆繙楂樹簬LSF錛?/span>5.5 S cm-1錛夈?/span>

鍥?/span>2 鐢?shù)鍖栧琛ㄥ緛銆傦紙a錛夋瘮媧繪э紱錛?/span>b錛?/span>OER闃繪姉鍥捐氨錛涳紙c錛?/span>HER闃繪姉鍥捐氨錛涳紙d錛夊叏瑙ｆ按瑁呯疆紺烘剰鍥撅紱浠ヤ笉鍚屽偓鍖栧墏浣滀負闃蟲瀬鍜岄槾鏋佺殑鍏ㄨВ姘磋緗殑錛?/span>e錛夋瀬鍖栨洸綰垮拰錛?/span>f錛夌ǔ瀹氭с?/span>

鍒╃敤涓夌數(shù)鏋佷綋緋誨涓嶅悓鍌寲鍓傜殑OER鍜?/span>HER媧繪ц繘琛屾祴璇曪紝鍙戠幇閫氳繃涓ゆ鐩稿弽搴旀硶鑱斿悎鍏冪礌鎺烘潅鍒跺寰楀埌鐨?/span>LSFCP-55鍏鋒湁鐩稿浜?/span>LSF鍜?/span>SCP鏄捐憲鎻愰珮鐨?/span>OER鍜?/span>HER媧繪у拰鏈緛媧繪э紙鍥?/span>2a錛夈傛澶栵紝閫氳繃絳夋晥鐢?shù)璧\鍥炬嫙鍚堝緱鍒板偓鍖栧墏鐨勭數(shù)鍖栧闃繪姉璋?/span>(EIS)銆傛墍鏈夊偓鍖栧墏鍦?/span>Nyquist鍥句笂閮芥樉紺轟負鍗婂渾錛屽寘鎷數(shù)鑽瘋漿縐葷數(shù)闃?/span>(Rct)銆佹繪濮嗙數(shù)闃?/span>(Rs)鍜屾亽鐩稿厓浠?/span>(濡傚浘2b-c鎵紺?/span>)銆傚茍涓旓紝瀵逛簬OER鍜?/span>HER錛?/span>LSFCP-55鍧囨樉紺哄嚭鏈灝忕殑Rct錛岃繖琛ㄦ槑鍏跺弽搴斿姩鍔涘鏈蹇紝鐢?shù)瀛愪紶閫掗熷害鏈蹇?/span>閴翠簬LSFCP-55浼樿秺鐨勫弻鍔熻兘鍌寲媧繪у拰紼沖畾鎬э紝灝嗗叾搴旂敤浜庣數(shù)瑙ｆ按瑁呯疆錛屽鍥?/span>2e錛?/span>LSFCP-55 ( ) | | LSFCP-55(-)鍏ㄨВ姘磋緗湪10mA cm-2鐨勭數(shù)嫻佸瘑搴︿笅鏄劇ず鍑?/span>1.57 V鐨勪綆鐢?shù)浣嶅Q屼綆浜?/span>RuO2 ( ) | | 20 pt / C (-) (1.60 V)銆傛澶?/span>, LSFCP-55 ( ) || LSFCP-55(-)鐢?shù)瑙ｆ按瑁吘|?/span>鍏鋒湁杈冨ソ鐨勬暣浣?/span>鐢?shù)瑙ｆ按绋冲畾鎬?/span>錛?/span>鍦?/span>50 h鐨勬椂闂村唴鏄劇ず鍑鴻緝?yōu)畯鐨勭數(shù)鍘嬭“鍑忓Q?/span>浼樹簬RuO2 ( ) || 20Pt/C(-)銆?/span>

鍥?/span>3 鍩虹琛ㄥ緛銆?/span>XPS錛?/span>(a) Fe 2p錛?/span>(b) Co 2p錛?/span>XPS O 1s錛?/span>(c) LSF錛?/span>(d) SCP鍜?/span>(e) LSFCP-55錛?/span>(f) LSF錛?/span>SCP錛?/span>LSFCP-55鍜?/span>LSFCP-B鏍峰搧鐨?/span>O2-TPD鏇茬嚎銆?/span>

閲囩敤 XPS鐮旂┒鍌寲鍓傜殑鐢?shù)瀛愮姸鎬併?/span>鍙戠幇LSFCP-55鐩稿浜?/span>LSF鍜?/span>LSFCP-B鍏鋒湁杈冮珮鍚噺鐨?/span>Fe4 (16.8 %錛屽浘3a)錛屽叾鍙互鍔犲ぇFe 3d涓?/span>O 2p鐨勬潅鍖栫▼搴﹀茍涓斿姞閫?/span>OER榪囩▼涓殑鍘昏川瀛愬寲閫熷害錛屽洜姝ゅ彲浠ユ彁楂?/span>OER鍜?/span>HER媧繪с傜浉瀵逛簬SCP錛?/span>LSFCP-55鍏鋒湁杈冧綆鐨?/span>Co浠鋒侊紙鍥?/span>3b錛夈傛澶栵紝Co3 / Co4 鐢?shù)瀛愬鐨勫瓨鍦ㄤ篃鍙互鎻愰珮鍌寲娲绘с傜粨鍚?/span>XPS O1s, LSFCP-55涓殑鏅舵牸姘т綅緗浉瀵逛簬LSF鍜?/span>SCP鍏鋒湁鏄庢樉鐨勬鍋忕Щ錛堝浘3c-e錛夛紝榪欎唬琛ㄩ儴鍒嗛潪媧繪ф櫠鏍兼哀O2-琚偓鍖栧墏LSFCP-55涓殑寮虹數(shù)瀛愮浉浜掍綔鐢ㄦ縺媧伙紝杞彉涓烘椿鎬ф櫠鏍兼哀O2-x銆傜粨鍚?/span>Fe 2p 鍜?/span>Co 2p錛?/span>LSFCP-55涓?/span>Fe錛?/span>Co鍜?/span>O紱誨瓙鐨勪環(huán)鎬佸彉鍖栧彲鑳芥槸鐢變簬媧繪?/span>Fe鍜屽懆鍥村師瀛愮殑寮虹數(shù)鑽峰啀鍒嗗竷瀵艱嚧鐨?/span>錛屽嵆閫氳繃Fe4 -O2-x-Co3 榪涜浜?/span>澶ч噺鐨勭數(shù)瀛愯漿縐匯傞氳繃榪欑寮傚父鐨勭數(shù)鑽峰啀鍒嗛厤錛屼紭鍖栦簡姘寸殑鍚擱檮鍜岃В鍚歌兘浠ュ強浼樺寲浜嗗浜?/span>OER鍙嶅簲涓棿鐗╃ (M-OH銆?/span>M-OOH鍜?/span>M-O)鍜?/span>HER鍙嶅簲涓棿媧繪х墿縐?/span> (H )鐨?/span>鍚擱檮錛屼粠鑰屾彁楂樹簡OER鍜?/span>HER鐨勬椿鎬?/span>銆?/span>O2-TPD錛堝浘3f錛夊拰H2-TPD錛堝浘4a錛?/span>鏇茬嚎涔熻瘉鏄庝簡浠ヤ笂鐚滄祴銆?/span>

鍥?/span>4 鍩虹琛ㄥ緛銆?/span>(a) LSF錛?/span>SCP錛?/span>LSFCP-55鍜?/span>LSFCP-B鏍峰搧鐨?/span>H2-TPD鏇茬嚎錛?/span>(b) LSF錛?/span>SCP錛?/span>(c) LSFCP-55鍜?/span>LSFCP-B鐨勬帴瑙﹁錛?/span>(d)鍌寲鍓傜殑鎷夋浖鍏夎氨錛?/span>(e) 鍌寲鍓傜殑OER 鐢墊祦瀵嗗害涓?span style="font-family:;">pH鐨勫叧緋伙紱(f)鏅舵牸姘?/span>鐩存帴鍙備笌OER鍙嶅簲錛氬師浣嶈川璋?/span>銆?/span>

鐩稿浜?/span>LSF(142.7?)銆?/span>SCP(132.0?)鍜?/span>LSFCP(129.9?)錛?/span>LSFCP-55鐨勬帴瑙﹁(99.2?)杈冨皬錛堝浘4b-c錛?/span>錛?/span>榪?/span>璇佸疄浜嗛挋閽涚熆鐤忔按鎬ц川鐨勬敼鍠勶紝鏈夊埄浜庝績榪涙按瑙ｇ鐢熸垚姘㈠拰姘с傛澶栵紝LSFCP-55鍐呴儴鏈夊埄鐨勭數(shù)鑽峰啀鍒?/span>甯?/span>鍙兘浼氬寮洪噾灞炲師瀛愬拰姘у師瀛愪箣闂寸殑鏉傚寲錛屼粠鑰?/span>鎻愰珮HER鍜?/span>OER鐨勭數(shù)瀛愯漿縐?/span>鑳藉姏(榪欎笌EIS錛?/span>Raman錛屽浘4d緇撴灉涓鑷?/span>)銆傚煎緱娉ㄦ剰鐨勬槸錛岃繖縐嶇數(shù)瀛愮浉浜掍綔鐢ㄥ拰楂樺鐢墊х殑瀛樺湪涔熻〃鏄庝簡榪欑涓ゆ鍒跺鏂規(guī)硶鐨勬湁鏁堟с傛澶栵紝閴翠簬閮ㄥ垎闈炴椿鎬ф櫠鏍兼哀O2-琚偓鍖栧墏LSFCP-55涓殑寮虹數(shù)瀛愮浉浜掍綔鐢ㄦ縺媧伙紝杞彉涓烘椿鎬ф櫠鏍兼哀O2-x錛屽彲鑳芥湁閮ㄥ垎鏅舵牸姘у弬涓?/span>OER鍙嶅簲銆傛垜浠鍏堥氳繃嫻嬭瘯涓嶅悓pH涓嬬殑OER鎬ц兘錛屽茍緇樺埗鐢墊祦瀵嗗害涓?/span>pH鐨勫叧緋誨浘錛屽彂鐜?/span>LSFCP-55鐨?/span>OER媧繪ф樉紺哄嚭杈冨己鐨?/span>pH渚濊禆鎬э紙鍥?/span>4e錛夈傚洜姝わ紝鎴戜滑鍊熷姪鍘熶綅璐ㄨ氨榪涜18O媯嫻嬩互璇佹槑鏅舵牸姘у弬涓庡弽搴旂殑鍙戠敓銆傚鍥?/span>4f鎵紺猴紝鍦?/span>LSFCP-55鍌寲鍓傜殑嫻嬭瘯榪囩▼涓紝璐ㄨ氨媯嫻嬪埌澶ч噺34O2 (16O18O)錛岃瘉瀹炰簡18O鐨勫瓨鍦紝浠ュ強LSFCP-55涓洿澶氱殑鏅舵牸姘у弬涓庝簡OER鍙嶅簲銆傜浉姣斾箣涓嬶紝LSF鍜?/span>SCP媯嫻嬪埌鐨?/span>34O2鍚噺杈冨皯錛岃〃鏄?/span>鍏朵腑杈冨皯鐨?/span>鏅舵牸姘у弬涓?/span>OER鍙嶅簲銆傚洜姝わ紝LSFCP-55涓殑鏅舵牸姘ц寮虹數(shù)鑽峰啀鍒?/span>甯?/span>嬋媧?/span>錛屼粠鑰屽弬涓庡埌OER鍙嶅簲榪囩▼涓?/span>

榪欓」宸ヤ綔涓嶄粎鎻ず浜嗙數(shù)鑽峰啀鍒嗗竷鍜屾縺媧葷殑鏅舵牸姘у鎻愰珮鐢?shù)鍌寲娲绘х殑浣滅敤錛岃屼笖鎻愪緵浜嗕竴縐嶇畝鍗曟湁鏁堢殑鍒跺楂樻椿鎬у拰楂樺鐢墊ч挋閽涚熆姘у寲鐗╃殑鏂規(guī)硶銆?/span>


浣滆呯畝浠?/strong>


閭靛畻騫?/strong>鏁欐巿錛岀幇涓哄崡浜伐涓氬ぇ瀛﹀寲宸ュ闄紝鏉愭枡鍖栧宸ョ▼鍥藉閲嶇偣瀹為獙瀹ゆ暀鎺堬紝鍗氬＋鐢熷甯堬紝闀挎睙瀛﹁呫佸浗瀹舵澃闈掋佷竾浜鴻鍒掋傚凡鍦?/span>Nature銆?/span>Nature Energy銆?/span>Nature Communications銆?/span>Science Advances絳夊浗闄呮湡鍒婂彂琛?/span>SCI璁烘枃700浣欑瘒錛?/span>h-index=93銆備富瑕佷粠浜嬬噧鏂欑數(shù)姹犮佸お闃寵兘鐢墊睜銆佸厜鍌寲銆佺數(shù)鍌寲銆侀攤/閽犵瀛愮數(shù)姹犮佹按澶勭悊絳夐鍩熺殑鐮旂┒銆?/span>

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鐩稿叧閾炬帴

https://pubs.acs.org/doi/10.1021/acsmaterialslett.1c00359

鍏嶈矗澹版槑錛氶儴鍒嗚祫鏂欐潵婧愪簬緗戠粶錛岃漿杞界殑鐩殑鍦ㄤ簬浼犻掓洿澶氫俊鎭強鍒嗕韓錛屽茍涓嶆剰鍛崇潃璧炲悓鍏惰鐐規(guī)垨璇佸疄鍏剁湡瀹炴э紝
涔熶笉鏋勬垚鍏朵粬寤鴻銆備粎鎻愪緵浜ゆ祦騫沖彴錛屼笉涓哄叾鐗堟潈璐熻矗銆傚娑夊強渚墊潈錛岃鑱旂郴鎴戜滑鍙婃椂淇敼鎴栧垹闄ゃ?br>閭錛歩nfo@polymer.cn
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